WO2018199117A1 - 基板積層体及び基板積層体の製造方法 - Google Patents
基板積層体及び基板積層体の製造方法 Download PDFInfo
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- WO2018199117A1 WO2018199117A1 PCT/JP2018/016681 JP2018016681W WO2018199117A1 WO 2018199117 A1 WO2018199117 A1 WO 2018199117A1 JP 2018016681 W JP2018016681 W JP 2018016681W WO 2018199117 A1 WO2018199117 A1 WO 2018199117A1
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Definitions
- the present invention relates to a substrate laminate and a method for manufacturing the substrate laminate.
- Patent Literature [Patent Literature] [Patent Document 1] JP-A-4-132258 [Patent Document 2] JP-A 2010-2226060 [Patent Document 3] JP-A-2016-47895 [Non-patent Document] [Non-Patent Document 1] A. Bayrashev, B. Ziaie, Sensors and Actuators A 103 (2003) 16-22. [Non-Patent Document 2] Q. Y. Tong, U. M. Gosele, Advanced Material 11, No. 17 (1999) 1409-1425.
- semiconductor substrates are bonded to each other at a temperature of 400 ° C. to 600 ° C. or higher in order to prevent unintentional peeling between the semiconductor substrates.
- a bonding method at a low temperature of 400 ° C. or less is required from the viewpoint of suppressing damage to the semiconductor circuit due to heat.
- an adhesive it is known that semiconductor substrates can be bonded to each other at a temperature of 400 ° C. or lower, unlike the case of bonding using, for example, silanol bonding.
- One embodiment of the present invention has been made in view of the above problems, and provides a substrate laminate in which an adhesive layer is thin and unintentional peeling is suppressed, and a method for manufacturing the substrate laminate.
- the purpose is to provide.
- X is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms
- the compound (A) is composed of an aliphatic amine having a weight average molecular weight of 10,000 to 400,000 and a compound having a weight average molecular weight of 130 to 10,000 having a siloxane bond (Si—O bond) and an amino group.
- a substrate laminate comprising at least one selected from the group. ⁇ 2> The substrate laminate according to ⁇ 1>, wherein the adhesive layer has a thickness of 0.1 nm to 5000 nm. ⁇ 3> The substrate laminate according to ⁇ 1> or ⁇ 2>, wherein the tensile bond strength is 5 MPa or more.
- ⁇ 4> The substrate laminate according to any one of ⁇ 1> to ⁇ 3>, wherein the crosslinking agent (B) has a ring structure in the molecule.
- ⁇ 5> The substrate laminate according to ⁇ 4>, wherein the ring structure in the crosslinking agent (B) is a ring structure having two or more —C ( ⁇ O) OX groups.
- ⁇ 6> The substrate laminate according to ⁇ 4> or ⁇ 5>, wherein the ring structure is at least one of a benzene ring and a naphthalene ring.
- the crosslinking agent (B) is the above-described three or more —C ( ⁇ O) OX groups, wherein at least one X is an alkyl group having 1 to 6 carbon atoms, ⁇ 1> to ⁇ 6>
- the compound having a weight average molecular weight of 130 to 10,000 having a siloxane bond (Si—O bond) and an amino group has a molar ratio of Si element to non-crosslinkable group bonded to Si element (non- The substrate laminate according to any one of ⁇ 1> to ⁇ 7>, which satisfies a relationship of crosslinkable group) / Si ⁇ 2.
- ⁇ 9> The substrate laminate according to any one of ⁇ 1> to ⁇ 8>, wherein the reactant has at least one of an amide bond and an imide bond.
- the temperature at which the outgas pressure under reduced pressure is 2 ⁇ 10 ⁇ 6 Pa is 400 ° C. or higher.
- ⁇ 11> The substrate laminate according to any one of ⁇ 1> to ⁇ 10>, wherein at least one of the first substrate and the second substrate includes an electrode on the surface on the adhesive layer side.
- At least one of the first substrate and the second substrate includes Si, Al, Ti, Zr, Hf, Fe, Ni, Cu, Ag, Au, Ga, Ge, Sn, Pd, As, and Pt.
- At least one of the first substrate and the second substrate is a semiconductor substrate containing at least one element selected from the group consisting of Si, Ga, Ge, and As, according to ⁇ 12>. Board laminate.
- Laminated body Laminated body.
- one or more and six or less are —C ( ⁇ O) OH groups, and the crosslinking agent (B) having a weight average molecular weight of 200 to 600
- a second step of imparting a third step of laminating a second substrate on the surface on which a film containing the compound (A) and the crosslinking agent (B) is formed, the compound (A) and the crosslinking agent.
- the film containing (B) is heated to 70 ° C. to 450 ° C. and contacted with the reaction product of the compound (A) and the crosslinking agent (B).
- the compound (A) has an aliphatic amine having a weight average molecular weight of 10,000 or more and 400,000 or less, and a weight having a siloxane bond (Si—O bond) and an amino group.
- a method for producing a substrate laminate comprising at least one selected from the group consisting of compounds having an average molecular weight of 130 or more and 10,000 or less.
- the compound (A) comprises an aliphatic amine having a weight average molecular weight of 10,000 to 400,000 and a compound having a weight average molecular weight of 130 to 10,000 having a siloxane bond (Si—O bond) and an amino group.
- the surface of the first substrate or the second substrate on which the film containing the compound (A) and the crosslinking agent (B) is formed is a hydroxyl group, an epoxy group, a carboxy group, an amino group.
- substrate laminated body as described in ⁇ 15> or ⁇ 16> which has at least 1 sort (s) chosen from the group which consists of group and a mercapto group.
- At least one of the first substrate and the second substrate is made of Si, Al, Ti, Zr, Hf, Fe, Ni, Cu, Ag, Au, Ga, Ge, Sn, Pd, As, Pt.
- substrate laminated body as described in ⁇ 17> couple
- a surface of the first substrate or the second substrate on which a film containing the compound (A) and the crosslinking agent (B) is formed has a silanol group (Si—OH group).
- One embodiment of the present invention can provide a substrate laminate in which an adhesive layer is thin and unintentional peeling is suppressed, and a method for manufacturing the substrate laminate can be provided.
- a numerical range expressed using “to” means a range including numerical values described before and after “to” as a lower limit value and an upper limit value.
- the upper limit value or the lower limit value described in one numerical range may be replaced with the upper limit value or the lower limit value of another numerical range.
- the upper limit value or the lower limit value of the numerical range may be replaced with the values shown in the examples.
- the substrate laminate of the present embodiment has a cationic functional group containing at least one of the first substrate, primary nitrogen atom and secondary nitrogen atom, and a compound having a weight average molecular weight of 90 or more and 400,000 or less ( A) and 3 or more —C ( ⁇ O) OX groups (X is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms) in the molecule, and 3 or more —C ( ⁇ O ) An OX group in which one or more and six or less are —C ( ⁇ O) OH groups, and a reaction layer with a cross-linking agent (B) having a weight average molecular weight of 200 to 600, and 2 substrates are laminated in order.
- the compound (A) is a group consisting of an aliphatic amine having a weight average molecular weight of 10,000 to 400,000 and a compound having a weight average molecular weight of 130 to 10,000 having a siloxane bond (Si—O bond) and an amino group. It is preferable to include at least one selected from the above.
- the first substrate and the second substrate are joined by an adhesive layer containing a reaction product of the compound (A) and the crosslinking agent (B). Since this adhesive layer is excellent in the smoothness of the adhesive layer surface when the adhesive layer is formed on the first substrate surface, it can be an adhesive layer having a uniform thickness and is excellent in the bonding strength between the substrates. ing. Furthermore, even if the thickness of the adhesive layer is reduced, the bonding strength between the substrates is excellent, which is advantageous when forming a multilayer three-dimensional structure while reducing the size. Further, since the thickness of the adhesive layer can be reduced, the polar solvent (D) is easily volatilized when the substrate laminate is manufactured, and generation of voids is suppressed. Moreover, since generation
- the substrate laminate of this embodiment includes a compound (A) having a cationic functional group containing at least one of a primary nitrogen atom and a secondary nitrogen atom, and having a weight average molecular weight of 90 or more and 400,000 or less, 3 or more —C ( ⁇ O) OX groups (wherein X is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms) and 3 or more —C ( ⁇ O) OX groups One or more and six or less are —C ( ⁇ O) OH groups, and an adhesive layer containing a reaction product with a crosslinking agent (B) having a weight average molecular weight of 200 to 600 is provided.
- This adhesive layer has excellent bonding strength between the substrates, and can suppress peeling of the substrates.
- the thickness of the adhesive layer is preferably 0.1 nm to 5000 nm, more preferably 0.5 nm to 3000 nm, still more preferably 0.5 nm to 2000 nm, particularly preferably 0.5 nm to 1000 nm, and even more preferably 0.5 nm to 500 nm.
- the thickness of the adhesive layer may be measured by peeling off at least one substrate from the substrate laminate and using an ellipsometer.
- fitting may be performed using an optical model of air / (Cauchy + Lorentz vibrator model) / natural oxide film / silicon substrate.
- the fitting may be performed with an optical model of air / SiO 2 / natural oxide film / silicon substrate.
- the substrate stack may be cut and the cut surface may be observed and measured with a scanning electron microscope (SEM) or a transmission electron microscope (TEM).
- SEM scanning electron microscope
- TEM transmission electron microscope
- the reaction product in the adhesive layer preferably has at least one of an amide bond and an imide bond from the viewpoint of excellent heat resistance.
- the compound (A) is a compound having a cationic functional group containing at least one of a primary nitrogen atom and a secondary nitrogen atom and having a weight average molecular weight of 90 or more and 400,000 or less.
- the cationic functional group is not particularly limited as long as it is a functional group that can be positively charged and contains at least one of a primary nitrogen atom and a secondary nitrogen atom.
- the compound (A) may contain a tertiary nitrogen atom in addition to the primary nitrogen atom and the secondary nitrogen atom.
- the “primary nitrogen atom” includes a nitrogen atom bonded to only two hydrogen atoms and one atom other than a hydrogen atom (for example, a primary amino group (—NH 2 group)). Nitrogen atom) or a nitrogen atom (cation) bonded to only three hydrogen atoms and one atom other than hydrogen atoms.
- the “secondary nitrogen atom” means a nitrogen atom bonded to only one hydrogen atom and two atoms other than hydrogen atoms (that is, a nitrogen atom contained in a functional group represented by the following formula (a)) Or a nitrogen atom (cation) bonded to only two hydrogen atoms and two atoms other than hydrogen atoms.
- the “tertiary nitrogen atom” is a nitrogen atom bonded to only three atoms other than a hydrogen atom (that is, a nitrogen atom which is a functional group represented by the following formula (b)) or a hydrogen atom It refers to a nitrogen atom (cation) bonded to only one atom and three atoms other than hydrogen atoms.
- the functional group represented by the formula (a) may be a functional group constituting a part of a secondary amino group (—NHR a group; where R a represents an alkyl group). Further, it may be a divalent linking group contained in the polymer skeleton.
- the functional group represented by the formula (b) (that is, tertiary nitrogen atom) is a tertiary amino group (—NR b R c group; where R b and R c are each independently alkyl A functional group constituting a part of the group) or a trivalent linking group contained in the skeleton of the polymer.
- the weight average molecular weight of the compound (A) is 90 or more and 400,000 or less.
- the compound (A) include an aliphatic amine, a compound having a siloxane bond (Si—O bond) and an amino group.
- the weight average molecular weight is preferably 10,000 or more and 200,000 or less.
- the weight average molecular weight is preferably 130 or more and 10,000 or less, more preferably 130 or more and 5000 or less, and 130 or more. More preferably, it is 2000 or less.
- a weight average molecular weight refers to the weight average molecular weight of polyethylene glycol conversion measured by GPC (Gel Permeation Chromatography) method except a monomer.
- GPC Gel Permeation Chromatography
- the weight average molecular weight was measured using an analytical solution Shodex DET RI-101 and two types of analytical columns (TSKgel G6000PWXL-CP and TSKgel G3000PWXL CP) is used to detect the refractive index at a flow rate of 1.0 mL / min, and polyethylene glycol / polyethylene oxide is used as a standard product and calculated with analysis software (Waters Empower3).
- the compound (A) may further have an anionic functional group, a nonionic functional group, etc. as needed.
- the nonionic functional group may be a hydrogen bond accepting group or a hydrogen bond donating group.
- Examples of the nonionic functional group include a hydroxy group, a carbonyl group, an ether group (—O—), and the like.
- the anionic functional group is not particularly limited as long as it is a functional group that can be negatively charged. Examples of the anionic functional group include a carboxylic acid group, a sulfonic acid group, and a sulfuric acid group.
- Examples of the compound (A) include aliphatic amines, and more specifically, ethyleneimine, propyleneimine, butyleneimine, pentyleneimine, hexyleneimine, heptyleneimine, octyleneimine, trimethyleneimine, tetramethyleneimine, Polyalkyleneimine which is a polymer of alkyleneimine such as pentamethyleneimine, hexamethyleneimine and octamethyleneimine; polyallylamine; polyacrylamide.
- Polyethyleneimine (PEI) is produced by a known method described in JP-B-43-8828, JP-B-49-33120, JP-A-2001-213958, WO 2010/137711, etc. be able to.
- Polyalkyleneimines other than polyethyleneimine can also be produced by the same method as polyethyleneimine.
- the compound (A) is also preferably the above-described polyalkyleneimine derivative (polyalkyleneimine derivative; particularly preferably a polyethyleneimine derivative).
- the polyalkyleneimine derivative is not particularly limited as long as it is a compound that can be produced using the polyalkyleneimine. Specifically, a polyalkyleneimine derivative in which an alkyl group (preferably an alkyl group having 1 to 10 carbon atoms) or an aryl group is introduced into polyalkyleneimine, or a crosslinkable group such as a hydroxyl group is introduced into polyalkyleneimine.
- the polyalkyleneimine derivative etc. which can be mentioned can be mentioned.
- These polyalkyleneimine derivatives can be produced by a method usually performed using the above polyalkyleneimine. Specifically, for example, it can be produced according to the method described in JP-A-6-016809.
- polyalkyleneimine derivative a highly branched polyalkyleneimine obtained by improving the degree of branching of the polyalkyleneimine by reacting the polyalkyleneimine with a cationic functional group-containing monomer is also preferable.
- a polyalkyleneimine having a plurality of secondary nitrogen atoms in the skeleton is reacted with a cationic functional group-containing monomer, and the plurality of secondary nitrogen atoms
- a method of substituting at least one of them with a cationic functional group-containing monomer a reaction of a cationic functional group-containing monomer with a polyalkyleneimine having a plurality of primary nitrogen atoms at its ends, and the plurality of primary nitrogen atoms
- a method of substituting at least one of them with a cationic functional group-containing monomer is reacted with a cationic functional group-containing monomer, and the plurality of secondary nitrogen atoms
- Examples of the cationic functional group introduced to improve the degree of branching include aminoethyl group, aminopropyl group, diaminopropyl group, aminobutyl group, diaminobutyl group, and triaminobutyl group.
- An aminoethyl group is preferable from the viewpoint of reducing the functional functional group equivalent and increasing the cationic functional group density.
- polyethyleneimine and its derivatives may be commercially available.
- polyethyleneimine and derivatives thereof commercially available from Nippon Shokubai Co., Ltd., BASF, MP-Biomedicals, and the like can be appropriately selected and used.
- Examples of the compound (A) include compounds having a Si—O bond and an amino group in addition to the aliphatic amine described above.
- Examples of the compound having a Si—O bond and an amino group include siloxane diamine, a silane coupling agent having an amino group, and a siloxane polymer of a silane coupling agent having an amino group.
- Examples of the silane coupling agent having an amino group include compounds represented by the following formula (A-3).
- R 1 represents an optionally substituted alkyl group having 1 to 4 carbon atoms.
- R 2 and R 3 each independently represents an alkylene group having 1 to 12 carbon atoms, an ether group or a carbonyl group which may be substituted (a skeleton may contain a carbonyl group, an ether group or the like).
- R 4 and R 5 each independently represents an optionally substituted alkylene group having 1 to 4 carbon atoms or a single bond.
- Ar represents a divalent or trivalent aromatic ring.
- X 1 represents hydrogen or an optionally substituted alkyl group having 1 to 5 carbon atoms.
- X 2 represents hydrogen, a cycloalkyl group, a heterocyclic group, an aryl group, or an alkyl group having 1 to 5 carbon atoms which may be substituted (a skeleton may include a carbonyl group, an ether group, or the like).
- a plurality of R 1 , R 2 , R 3 , R 4 , R 5 , and X 1 may be the same or different.
- the substituent for the alkyl group and alkylene group in R 1 , R 2 , R 3 , R 4 , R 5 , X 1 and X 2 each independently represents an amino group, a hydroxy group, an alkoxy group, a cyano group, or a carboxylic acid.
- Examples of the divalent or trivalent aromatic ring in Ar include a divalent or trivalent benzene ring.
- Examples of the aryl group for X 2 include a phenyl group, a methylbenzyl group, a vinylbenzyl group, and the like.
- silane coupling agent represented by the formula (A-3) include N- (2-aminoethyl) -3-aminopropylmethyldiethoxysilane and N- (2-aminoethyl) -3. -Aminopropyltriethoxysilane, N- (2-aminoethyl) -3-aminoisobutyldimethylmethoxysilane, N- (2-aminoethyl) -3-aminoisobutylmethyldimethoxysilane, N- (2-aminoethyl)- 11-aminoundecyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, N-phenyl-3-aminopropyltrimethoxysilane, (aminoethylaminoethyl) phenyltriethoxysilane, methylbenzyl
- silane coupling agent containing an amino group other than the formula (A-3) examples include N, N-bis [3- (trimethoxysilyl) propyl] ethylenediamine, N, N′-bis [3- (trimethoxy Silyl) propyl] ethylenediamine, bis [(3-triethoxysilyl) propyl] amine, piperazinylpropylmethyldimethoxysilane, bis [3- (triethoxysilyl) propyl] urea, bis (methyldiethoxysilylpropyl) amine, 2,2-dimethoxy-1,6-diaza-2-silacyclooctane, 3,5-diamino-N- (4- (methoxydimethylsilyl) phenyl) benzamide, 3,5-diamino-N- (4- (tri Ethoxysilyl) phenyl) benzamide, 5- (ethoxydimethylsilyl) benzene
- silane coupling agent having an amino group may be used alone or in combination of two or more. Moreover, you may use combining the silane coupling agent which has an amino group, and the silane coupling agent which does not have an amino group. For example, a silane coupling agent having a mercapto group may be used for improving the adhesion with a metal.
- a polymer (siloxane polymer) formed from these silane coupling agents via a siloxane bond may be used.
- siloxane polymer formed from these silane coupling agents via a siloxane bond
- Si—O—Si siloxane bond
- a polymer having a linear siloxane structure a polymer having a branched siloxane structure, a polymer having a cyclic siloxane structure, a polymer having a cage siloxane structure, etc. Is obtained.
- the cage-like siloxane structure is represented, for example, by the following formula (A-1).
- Examples of the siloxane diamine include compounds represented by the following formula (A-2).
- i is an integer of 0 to 4
- j is an integer of 1 to 3
- Me is a methyl group.
- Examples of the compound (A) include, in addition to the above-mentioned aliphatic amine and the compound having a Si—O bond and an amino group, an amine compound having no ring structure and having a ring structure.
- Compound (A) has at least one selected from the group consisting of the aforementioned aliphatic amines and compounds having a Si—O bond and an amino group, has no Si—O bond in the molecule, and has a ring structure
- An amine compound having a weight average molecular weight of 90 or more and 600 or less having a ring structure and having no Si—O bond in the molecule may be included.
- Examples of the amine compound having no Si—O bond in the molecule and having a ring structure and having a weight average molecular weight of 90 to 600 include alicyclic amines, aromatic amines, and heterocyclic (heterocyclic) amines.
- the molecule may have a plurality of ring structures, and the plurality of ring structures may be the same or different.
- a compound having an aromatic ring is more preferable because a thermally stable compound is easily obtained.
- a thermal crosslinking structure such as amide, amideimide, and imide is formed together with the crosslinking agent (B).
- a compound having a primary amino group is preferable because it is easy and heat resistance can be improved.
- two primary amino groups are included because it is easy to increase the number of thermal crosslinking structures such as amide, amideimide and imide together with the crosslinking agent (B), and heat resistance can be further improved.
- a diamine compound having a triamine compound having three primary amino groups is preferable.
- Examples of alicyclic amines include cyclohexylamine and dimethylaminocyclohexane.
- Examples of the aromatic ring amine include diaminodiphenyl ether, xylenediamine (preferably paraxylenediamine), diaminobenzene, diaminotoluene, methylenedianiline, dimethyldiaminobiphenyl, bis (trifluoromethyl) diaminobiphenyl, diaminobenzophenone, diaminobenzanilide.
- heterocyclic ring of the heterocyclic amine As the heterocyclic ring of the heterocyclic amine, a heterocyclic ring containing a sulfur atom as a hetero atom (eg, a thiophene ring), or a heterocyclic ring containing a nitrogen atom as a hetero atom (eg, a pyrrole ring, a pyrrolidine ring, a pyrazole ring, an imidazole ring) 5-membered rings such as triazole ring; 6-membered rings such as isocyanuric ring, pyridine ring, pyridazine ring, pyrimidine ring, pyrazine ring, piperidine ring, piperazine ring, triazine ring; indole ring, indoline ring, quinoline ring, acridine ring, Naphthyridine ring, quinazoline ring, purine ring, quinoxaline
- examples of the heterocyclic amine having a nitrogen-containing heterocyclic ring include melamine, ammelin, melam, melem, and tris (4-aminophenyl) amine.
- examples of the amine compound having both a heterocyclic ring and an aromatic ring include N2, N4, N6-tris (4-aminophenyl) -1,3,5-triazine-2,4,6-triamine.
- the compound (A) has a primary or secondary amino group, a functional group such as a hydroxyl group, an epoxy group, a carboxy group, an amino group, or a mercapto group that can exist on the surfaces of the first substrate and the second substrate;
- the substrates can be strongly bonded to each other by electrostatic interaction or by forming a covalent bond with the functional group densely.
- the compound (A) has a primary or secondary amino group, it is easily dissolved in the polar solvent (D) described later.
- the affinity with the hydrophilic surface of a substrate such as a silicon substrate is increased, so that it is easy to form a smooth film and the thickness of the adhesive layer Can be made thinner.
- the compound (A) is preferably an aliphatic amine or a compound having a Si—O bond and an amino group from the viewpoint of forming a smooth thin film, and a compound having a Si—O bond and an amino group from the viewpoint of heat resistance. More preferred. Furthermore, a compound having a Si—O bond and a primary amino group is preferable from the viewpoint of further improving heat resistance by forming a thermal crosslinking structure such as amide, amideimide, and imide.
- the ratio between the total number of primary nitrogen atoms and secondary nitrogen atoms in the compound (A) and the number of silicon atoms is preferably 0.2 or more and 5 or less from the viewpoint of forming a smooth thin film.
- the Si element and the Si element in the compound having a Si—O bond and an amino group are considered from the viewpoint of adhesion between the substrates.
- the molar ratio with a non-crosslinkable group such as a methyl group bonded to the above satisfies the relationship (non-crosslinkable group) / Si ⁇ 2.
- the compound (A) has a cationic functional group containing at least one of a primary nitrogen atom and a secondary nitrogen atom.
- the proportion of the primary nitrogen atom in all the nitrogen atoms in the compound (A) is preferably 20 mol% or more, and 25 mol%. More preferably, it is more preferably 30 mol% or more.
- the compound (A) may have a cationic functional group containing a primary nitrogen atom and not containing a nitrogen atom other than the primary nitrogen atom (for example, a secondary nitrogen atom or a tertiary nitrogen atom). Good.
- the proportion of secondary nitrogen atoms in all the nitrogen atoms in the compound (A) is preferably 5 mol% or more and 50 mol% or less, More preferably, it is 10 mol% or more and 45 mol% or less.
- the compound (A) may contain a tertiary nitrogen atom.
- the compound (A) may contain a tertiary nitrogen atom.
- the proportion of tertiary nitrogen atoms in the total nitrogen atoms is preferably 20 mol% or more and 50 mol% or less, and more preferably 25 mol% or more and 45 mol% or less.
- the content of the component derived from the compound (A) in the adhesive layer is not particularly limited, and can be, for example, 1% by mass or more and 82% by mass or less with respect to the entire adhesive layer. % To 82% by mass, more preferably 13% to 82% by mass.
- the crosslinking agent (B) is a compound having three or more —C ( ⁇ O) OX groups (X is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms) in the molecule, preferably , A compound having 3 to 6 —C ( ⁇ O) OX groups in the molecule, and more preferably a compound having 3 or 4 —C ( ⁇ O) OX groups in the molecule.
- X in the —C ( ⁇ O) OX group includes a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and among them, a hydrogen atom, a methyl group, an ethyl group, a propyl group. Is preferred. X in the —C ( ⁇ O) OX group may be the same or different.
- the crosslinking agent (B) is a compound having one or more —C ( ⁇ O) OH groups in which X is a hydrogen atom in the molecule, and preferably —C ( ⁇ O) OH in the molecule.
- a compound having 1 or more and 4 or less groups, more preferably a compound having 2 or more and 4 or less —C ( ⁇ O) OH groups in the molecule, and still more preferably —C ( O)
- the crosslinking agent (B) is a compound having a weight average molecular weight of 200 or more and 600 or less. Preferably, it is a compound of 200 or more and 400 or less.
- the crosslinking agent (B) preferably has a ring structure in the molecule.
- the ring structure include an alicyclic structure and an aromatic ring structure.
- the crosslinking agent (B) may have a plurality of ring structures in the molecule, and the plurality of ring structures may be the same or different.
- the alicyclic structure examples include an alicyclic structure having 3 to 8 carbon atoms, preferably an alicyclic structure having 4 to 6 carbon atoms, and the ring structure may be saturated or unsaturated. Good. More specifically, as the alicyclic structure, a saturated alicyclic structure such as a cyclopropane ring, a cyclobutane ring, a cyclopentane ring, a cyclohexane ring, a cycloheptane ring, a cyclooctane ring; a cyclopropene ring, a cyclobutene ring, a cyclopentene ring, Examples thereof include unsaturated alicyclic structures such as a cyclohexene ring, a cycloheptene ring, and a cyclooctene ring.
- the aromatic ring structure is not particularly limited as long as it is an aromatic ring structure.
- aromatic rings such as benzene ring, naphthalene ring, anthracene ring and perylene ring, aromatic rings such as pyridine ring and thiophene ring
- Non-benzene aromatic rings such as heterocycles, indene rings, and azulene rings.
- the crosslinking agent (B) has in the molecule for example, at least one selected from the group consisting of a cyclobutane ring, a cyclopentane ring, a cyclohexane ring, a benzene ring, and a naphthalene ring is preferable. From the viewpoint of further enhancement, at least one of a benzene ring and a naphthalene ring is more preferable.
- the crosslinking agent (B) may have a plurality of ring structures in the molecule, and when the ring structure is benzene, it may have a biphenyl structure, a benzophenone structure, a diphenyl ether structure, or the like.
- the ring structure of the crosslinking agent (B) in the molecule is preferably a ring structure having two or more —C ( ⁇ O) OX groups.
- the crosslinking agent (B) preferably has a fluorine atom in the molecule, more preferably has 1 or more and 6 or less fluorine atoms in the molecule, and has 3 or more and 6 or less fluorine atoms in the molecule. More preferably, it has.
- the crosslinking agent (B) may have a fluoroalkyl group in the molecule, and specifically may have a trifluoroalkyl group or a hexafluoroisopropyl group.
- carboxylic acid compounds such as alicyclic carboxylic acid, benzene carboxylic acid, naphthalene carboxylic acid, diphthalic acid, and fluorinated aromatic ring carboxylic acid
- alicyclic carboxylic acid ester, benzene carboxylic acid ester, naphthalene examples thereof include carboxylic acid ester compounds such as carboxylic acid esters, diphthalic acid esters, and fluorinated aromatic ring carboxylic acid esters.
- the carboxylic acid ester compound has a carboxy group (—C ( ⁇ O) OH group) in the molecule, and in three or more —C ( ⁇ O) OX groups, at least one X is the number of carbon atoms.
- the compound is an alkyl group having 1 to 6 alkyl groups (that is, having an ester bond).
- the crosslinking agent (B) is a carboxylic acid ester compound, aggregation due to the association of the compound (A) and the crosslinking agent (B) is suppressed, and aggregates and pits are reduced. Adjustment is easy.
- the carboxylic acid compound is preferably a tetravalent or lower carboxylic acid compound containing 4 or less —C ( ⁇ O) OH groups, and a trivalent containing 3 or 4 —C ( ⁇ O) OH groups. Or it is more preferable that it is a tetravalent carboxylic acid compound.
- the carboxylic acid ester compound is preferably a compound containing 3 or less carboxy groups (—C ( ⁇ O) OH groups) in the molecule and 3 or less ester bonds. More preferably, it is a compound containing 2 or less and 2 or less ester bonds.
- X is an alkyl group having 1 to 6 carbon atoms
- X is a methyl group
- an ethyl group, a propyl group, A butyl group or the like is preferable, but an ethyl group or a propyl group is preferable from the viewpoint of further suppressing aggregation due to the association between the compound (A) and the crosslinking agent (B).
- carboxylic acid compound examples include, but are not limited to, 1,2,3,4-cyclobutanetetracarboxylic acid, 1,2,3,4-cyclopentanetetracarboxylic acid, 1,3,5-cyclohexane.
- Alicyclic carboxylic acids such as tricarboxylic acid, 1,2,4-cyclohexanetricarboxylic acid, 1,2,4,5-cyclohexanetetracarboxylic acid, 1,2,3,4,5,6-cyclohexanehexacarboxylic acid; 1 , 2,4-benzenetricarboxylic acid, 1,3,5-benzenetricarboxylic acid, pyromellitic acid, benzenepentacarboxylic acid, mellitic acid and other benzenecarboxylic acids; 1,4,5,8-naphthalenetetracarboxylic acid, 2 Naphthalenecarboxylic acids such as 3,6,7-naphthalenetetracarboxylic acid; 3,3 ′, 5,5′-tetracarboxydiphenylmethane Biphenyl-3,3 ′, 5,5′-tetracarboxylic acid, biphenyl-3,4 ′, 5-tricarboxylic acid, biphen
- carboxylic acid ester compound examples include compounds in which at least one carboxy group in the specific examples of the carboxylic acid compound described above is substituted with an ester group.
- carboxylic acid ester compounds include half-esterified compounds represented by the following general formulas (B-1) to (B-6).
- R in the general formulas (B-1) to (B-6) is each independently an alkyl group having 1 to 6 carbon atoms, preferably a methyl group, an ethyl group, a propyl group, or a butyl group, preferably an ethyl group, A propyl group is more preferred.
- the half-esterified compound can be produced, for example, by mixing a carboxylic acid anhydride, which is an anhydride of the above-described carboxylic acid compound, with an alcohol solvent and opening the carboxylic acid anhydride.
- a carboxylic acid anhydride which is an anhydride of the above-described carboxylic acid compound
- the content of the component derived from the crosslinking agent (B) in the adhesive layer is not particularly limited.
- the ratio of the number of carbonyl groups (— (C ⁇ O) —Y) in the substance ((— (C ⁇ O) —Y) / N) is preferably 0.1 or more and 3.0 or less. It is more preferably 3 or more and 2.5 or less, and further preferably 0.4 or more and 2.2 or less.
- Y represents an imide-bridged or amide-bridged nitrogen atom, OH, or ester group.
- the adhesive layer preferably has a thermal crosslinking structure such as amide, amideimide, imide and the like, and is excellent in heat resistance. .
- the compound (A) has an uncrosslinked cationic functional group
- the crosslinking density is low, and the heat resistance It is considered that the nature is not sufficient.
- the cationic functional group of the compound (A) and the carboxy group of the crosslinking agent (B) react to form a covalent bond, thereby increasing the crosslinking density and having high heat resistance.
- a solution for forming an adhesive layer in the substrate laminate of this embodiment for example, a solution containing a compound (A) used in a method for producing a substrate laminate described later, a solution containing a crosslinking agent (B), a compound (A ) And the crosslinking agent (B) preferably contain the polar solvent (D).
- the polar solvent (D) refers to a solvent having a relative dielectric constant of 5 or more at room temperature.
- the polar solvent (D) include protic inorganic compounds such as water and heavy water; methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, isobutyl alcohol, isopentyl alcohol, Cyclohexanol, ethylene glycol, propylene glycol, 2-methoxyethanol, 2-ethoxyethanol, benzyl alcohol, diethylene glycol, triethylene glycol, glycerol and other alcohols; tetrahydrofuran, dimethoxyethane and other ethers; furfural, acetone, ethyl methyl ketone Aldehydes and ketones such as cyclohexane; acetic anhydride, ethyl acetate, butyl acetate, ethylene carbonate, propylene carbonate, formaldehyde, N-methylformamide, N, -Acid derivatives such as dimethylformamide, N-methylacetamide, N, N, N
- the polar solvent (D) preferably contains a protic solvent, more preferably water, and still more preferably ultrapure water.
- the content of the polar solvent (D) in the solution for forming the adhesive layer is not particularly limited, and is, for example, 1.0% by mass or more and 99.9996% by mass or less, and 40% by mass with respect to the entire solution. It is preferable that it is 99.999896 mass% or more.
- the boiling point of the polar solvent (D) is preferably 150 ° C. or less from the viewpoint of volatilizing the polar solvent (D) by heating when forming the adhesive layer and reducing the amount of residual solvent in the adhesive layer, The following is more preferable.
- the solution for forming the adhesive layer in the substrate laminate of this embodiment may contain an additive (C) in addition to the compound (A), the crosslinking agent (B) and the polar solvent (D).
- an additive (C) in addition to the compound (A), the crosslinking agent (B) and the polar solvent (D).
- the additive (C) include a carboxyl group-containing acid (C-1) having a weight average molecular weight of 46 or more and 195 or less, and a nitrogen atom-containing base (C-2) having a weight average molecular weight of 17 or more and 120 or less. Is mentioned.
- the additive (C) is volatilized by heating when forming the adhesive layer, but the adhesive layer in the substrate laminate of the present embodiment may contain the additive (C).
- Acid (C-1) is an acid having a carboxy group and a weight average molecular weight of 46 or more and 195 or less.
- the acid (C-1) as the additive (C)
- the amino group in the compound (A) and the carboxy group in the acid (C-1) form an ionic bond, thereby cross-linking the compound (A). It is presumed that aggregation due to association with the agent (B) is suppressed.
- the interaction for example, electrostatic interaction
- the ammonium ion derived from the amino group in the compound (A) and the carboxylate ion derived from the carboxy group in the acid (C-1) is converted into the compound (A ) Is stronger than the interaction between the ammonium ion derived from the amino group and the carboxylate ion derived from the carboxy group in the cross-linking agent (B), and it is estimated that aggregation is suppressed.
- the present invention is not limited by the above estimation.
- the acid (C-1) is not particularly limited as long as it has a carboxy group and has a weight average molecular weight of 46 or more and 195 or less, and examples thereof include monocarboxylic acid compounds, dicarboxylic acid compounds, and oxydicarboxylic acid compounds. . More specifically, the acid (C-1) includes formic acid, acetic acid, malonic acid, oxalic acid, citric acid, benzoic acid, lactic acid, glycolic acid, glyceric acid, butyric acid, methoxyacetic acid, ethoxyacetic acid, phthalic acid, Examples include terephthalic acid, picolinic acid, salicylic acid, 3,4,5-trihydroxybenzoic acid, and the like.
- the content of the acid (C-1) in the solution for forming the adhesive layer in the substrate laminate is not particularly limited.
- the ratio (COOH / N) of the number of carboxy groups in (C-1) is preferably 0.01 or more and 10 or less, more preferably 0.02 or more and 6 or less, and 0.5 or more and 3 or less. The following is more preferable.
- the base (C-2) is a base having a nitrogen atom and a weight average molecular weight of 17 or more and 120 or less.
- the solution for forming the adhesive layer in the substrate laminate of the present embodiment contains the base (C-2) as the additive (C), so that the carboxy group and the base (C-2) in the crosslinking agent (B) are contained. It is presumed that the formation of an ionic bond with the amino group in) suppresses aggregation due to the association between the compound (A) and the crosslinking agent (B).
- the interaction between the carboxylate ion derived from the carboxy group in the crosslinking agent (B) and the ammonium ion derived from the amino group in the base (C-2) is derived from the amino group in the compound (A). Since it is stronger than the interaction between the ammonium ion and the carboxylate ion derived from the carboxyl group in the crosslinking agent (B), it is presumed that aggregation is suppressed.
- the present invention is not limited by the above estimation.
- the base (C-2) is not particularly limited as long as it is a compound having a nitrogen atom and not having a ring structure having a weight average molecular weight of 17 or more and 120 or less, and examples thereof include monoamine compounds and diamine compounds. More specifically, as the base (C-2), ammonia, ethylamine, ethanolamine, diethylamine, triethylamine, ethylenediamine, N-acetylethylenediamine, N- (2-aminoethyl) ethanolamine, N- (2-amino) Ethyl) glycine and the like.
- the content of the base (C-2) in the solution for forming the adhesive layer in the substrate laminate is not particularly limited.
- the ratio (N / COOH) of the number of nitrogen atoms in (C-2) is preferably 0.5 or more and 5 or less, more preferably 0.9 or more and 3 or less.
- the adhesive layer in the substrate laminate of this embodiment preferably has a sodium and potassium content of 10 mass ppb or less on an element basis. If the content of sodium or potassium is 10 mass ppb or less on an element basis, it is possible to suppress the occurrence of inconveniences in the electrical characteristics of the semiconductor device such as malfunction of the transistor.
- tetraethoxysilane, tetramethoxysilane, bistriethoxysilylethane, bistriethoxysilylmethane, bis (methyldisilane) are used to improve insulation or mechanical strength.
- Ethoxysilyl) ethane 1,1,3,3,5,5-hexaethoxy-1,3,5-trisilacyclohexane, 1,3,5,7-tetramethyl-1,3,5,7-tetra Hydroxylcyclosiloxane, 1,1,4,4-tetramethyl-1,4-diethoxydisilethylene, 1,3,5-triethoxy-1,3,5-trimethyl-1,3,5-trisilacyclohexane
- these siloxane polymers may be mixed.
- methyltriethoxysilane, dimethyldiethoxysilane, trimethylethoxysilane or the like may be mixed in order to improve the hydrophobicity of the adhesive layer having insulating properties. These compounds may be mixed for controlling the etching selectivity.
- the solution for forming the adhesive layer in the substrate laminate may contain a solvent other than the polar solvent (D), and examples thereof include normal hexane.
- the solution for forming the adhesive layer in the substrate laminate may contain phthalic acid, benzoic acid, or the like, or a derivative thereof, for example, to improve electrical characteristics.
- substrate laminated body may contain the benzotriazole or its derivative (s), for example, in order to suppress copper corrosion.
- the pH of the solution for forming the adhesive layer in the substrate laminate is not particularly limited and is preferably 2.0 or more and 12.0 or less.
- the adhesive layer in the substrate laminate may contain a crosslinkable compound such as an epoxy compound, an isocyanate compound, and a polyvalent acrylate compound.
- the content of these crosslinkable compounds is preferably 5% by mass or less, more preferably 1% by mass or less with respect to the total mass of the adhesive layer, from the viewpoint of improving the heat resistance by suppressing the generation of outgas. 1 mass% or less is still more preferable, and it is especially preferable not to contain.
- the substrate laminate of the present embodiment is formed by laminating the first substrate, the above-described adhesive layer, and the second substrate in this order.
- the material of the first substrate and the second substrate is not particularly limited as long as it is normally used. Note that the materials of the first substrate and the second substrate may be the same or different.
- As the first substrate and the second substrate Si, Al, Ti, Zr, Hf, Fe, Ni, Cu, Ag, Au, Ga, Ge, Sn, Pd, As, Pt, Mg, In, Ta and It is preferable to include at least one element selected from the group consisting of Nb, more preferably to include at least one element selected from the group consisting of Si, Ga, Ge and As, and Si, Ga, Ge and As.
- the semiconductor substrate contains at least one element selected from the group consisting of:
- the material of the first substrate and the second substrate is, for example, semiconductor: Si, InP, GaN, GaAs, InGaAs, InGaAlAs, SiGe, SiC, oxide, carbide, nitride: borosilicate glass (Pyrex (registered trademark) )), Quartz glass (SiO 2 ), sapphire (Al 2 O 3 ), ZrO 2 , Si 3 N 4 , AlN, MgAl 2 O 4 , piezoelectric, dielectric: BaTiO 3 , LiNbO 3 , SrTiO 3 , LiTaO 3 Diamond, metal: Al, Ti, Fe, Cu, Ag, Au, Pt, Pd, Ta, Nb and the like.
- first substrate and the second substrate may include resin: polydimethylsiloxane (PDMS), epoxy resin, phenol resin, polyimide, benzocyclobutene resin, polybenzoxazole, and the like.
- PDMS polydimethylsiloxane
- epoxy resin epoxy resin
- phenol resin phenol resin
- polyimide polyimide
- benzocyclobutene resin polybenzoxazole, and the like.
- Si is a semiconductor memory, LSI stack, CMOS image sensor, MEMS sealing, optical device, LED, etc .
- SiO 2 is semiconductor memory, LSI stacking, MEMS sealing, microchannel, CMOS image sensor, optical device, LED, etc .
- BaTiO 3 , LiNbO 3 , SrTiO 3 , LiTaO 3 are surface acoustic wave devices
- PDMS is a microchannel
- InGaAlAs, InGaAs, InP are optical devices
- InGaAlAs, GaAs, GaN are LEDs.
- the side on which the adhesive layer of at least one of the first substrate and the second substrate used for manufacturing the substrate laminate is formed preferably the side on which the adhesive layer of the first substrate and the second substrate is formed
- This surface preferably has at least one selected from the group consisting of a hydroxyl group, an epoxy group, a carboxy group, an amino group and a mercapto group.
- Hydroxyl groups can be provided on the surfaces of the first substrate and the second substrate by performing surface treatment such as plasma treatment, chemical treatment, and ozone treatment, respectively.
- the epoxy groups can be provided on the surfaces of the first substrate and the second substrate by performing a surface treatment such as silane coupling with epoxy silane.
- Carboxy groups can be provided on the surfaces of the first substrate and the second substrate, respectively, by performing surface treatment such as silane coupling with carboxysilane.
- the amino groups can be provided on the surfaces of the first substrate and the second substrate, respectively, by performing a surface treatment such as silane coupling with aminosilane.
- At least one selected from the group consisting of a hydroxyl group, an epoxy group, a carboxy group, an amino group, and a mercapto group includes Si, Al, Ti, Zr, Hf, Fe, Ni contained in the first substrate or the second substrate.
- Cu, Ag, Au, Ga, Ge, Sn, Pd, As, Pt, Mg, In, Ta, and Nb are preferably present in a state of being bonded to at least one element selected from the group consisting of.
- the surface on which at least one adhesive layer of the first substrate and the second substrate is formed preferably has a silanol group containing a hydroxyl group (Si—OH group).
- At least one of the first substrate and the second substrate may have an electrode on the surface on the adhesive layer side.
- the thicknesses of the first substrate and the second substrate are each independently preferably 1 ⁇ m to 1 mm, and more preferably 2 ⁇ m to 900 ⁇ m.
- the shape of the first substrate and the second substrate is not particularly limited.
- the substrate may be a silicon substrate on which an interlayer insulating layer (Low-k film) is formed. ), Fine through-holes and the like may be formed.
- At least one of the first substrate and the second substrate may be laminated with another substrate on the surface opposite to the surface on the adhesive layer side.
- the preferred material for the other substrate is the same as the preferred material for the first substrate and the second substrate.
- the material of the other substrate may be the same as or different from at least one of the first substrate and the second substrate.
- the tensile bond strength of the substrate laminate in the present embodiment is preferably as high as possible from the viewpoint of suppressing unintentional peeling under the semiconductor process and the reliability. Specifically, the tensile bond strength of the substrate laminate is preferably 5 MPa or more, and more preferably 10 MPa or more. The tensile bond strength of the substrate laminate can be determined from the yield point obtained by measurement with a tensile tester. The tensile bond strength may be 200 MPa or less, or 100 MPa or less.
- the tensile bond strength is preferably 5 MPa or more and the thickness of the adhesive layer is preferably 0.1 nm to 5000 nm, and the tensile bond strength is 5 MPa or more and the thickness of the adhesive layer is 0.5 nm to More preferably, the thickness is 3000 nm, the tensile bond strength is 10 MPa or more and the thickness of the adhesive layer is more preferably 5 nm to 2000 nm, the tensile bond strength is 10 MPa or more and the thickness of the adhesive layer is 5 nm to 500 nm. Is particularly preferred.
- the temperature at which the outgas pressure becomes 2 ⁇ 10 ⁇ 6 Pa is preferably 400 ° C. or higher, from the viewpoint of suppressing a decrease in the bonding strength of the substrate laminate due to outgas. More preferably, the temperature is 440 ° C. or higher.
- the temperature at which the outgas pressure becomes 2 ⁇ 10 ⁇ 6 Pa is a value measured in a reduced pressure environment. The reduced pressure environment is 10 ⁇ 7 Pa.
- the temperature at which the outgas pressure becomes 2 ⁇ 10 ⁇ 6 Pa may be 600 ° C. or less, or may be 550 ° C. or less.
- the ratio of the total area of voids is preferably 30% or less, more preferably 20% or less, and further preferably 10% or less. preferable.
- the void area ratio is a value calculated by dividing the total void area by the total area where transmitted light can be observed and multiplying by 100 in infrared light transmission observation. If infrared light transmission observation is difficult, use the reflected wave of the ultrasonic microscope, the transmitted wave of the ultrasonic microscope, or the reflected light of the infrared light, preferably with the same method using the reflected wave of the ultrasonic microscope. Can be sought.
- substrate laminated body of one Embodiment of this invention includes a first manufacturing method and a second manufacturing method described below.
- substrate laminated body of this invention it is not limited to these.
- the first method for producing a substrate laminate has a cationic functional group containing at least one of a primary nitrogen atom and a secondary nitrogen atom on a first substrate, and a weight average molecular weight of 90 or more and 400,000 or less.
- the compound (A) is selected from the group consisting of an aliphatic amine having a weight average molecular weight of 10,000 to 400,000 and a compound having a weight average molecular weight of 130 to 10,000 having a siloxane bond (Si—O bond) and an amino group. It is preferable to include at least one kind.
- each process of the 1st manufacturing method of a substrate layered product is explained.
- Examples of a method for forming a film containing the compound (A) on the first substrate include a method of forming a film containing the compound (A) on the substrate using a solution containing the compound (A).
- the method for forming the film is not particularly limited, and a commonly used method may be employed.
- Examples of methods that are usually used include dipping, spraying, spin coating, and bar coating.
- a bar coating method when forming a film having a micron-size film thickness, it is preferable to use a bar coating method.
- a spin coating method is used when forming a film having a nano-size film thickness (several nm to several hundred nm). It is preferable.
- the method for forming a film containing the compound (A) by spin coating is not particularly limited.
- a solution containing the compound (A) is formed on the surface of the first substrate while rotating the substrate with a spin coater.
- a method of dripping and then drying the first substrate by increasing the number of rotations can be used.
- various conditions such as the rotation speed of the substrate, the dropping amount and dropping time of the solution containing the compound (A), and the rotation speed of the substrate during drying are particularly There is no limitation, and it may be adjusted as appropriate in consideration of the thickness of the film to be formed.
- substrate laminated body may have a drying process which dries the 1st board
- the said temperature refers to the temperature of the surface in which the film
- the polymer when Cu and SiO 2 are present on the surface of the first substrate on the adhesive layer side, it is difficult for the polymer to remain on Cu and the polymer to remain on SiO 2 by having this drying step. It is possible to achieve both ease and efficiency more effectively.
- the temperature when the temperature is 70 ° C. or higher, the persistence of the polymer imparted to SiO 2 is suitably maintained. Further, when the temperature is 250 ° C. or less, the polymer can be made harder to remain in Cu.
- the temperature is more preferably 80 ° C. to 200 ° C., more preferably 85 ° C. to 170 ° C., and still more preferably 90 ° C. to 150 ° C.
- Drying in the drying step can be performed by an ordinary method, for example, using a hot plate.
- atmosphere which performs drying For example, you may carry out in air
- inert gas nitrogen gas, argon gas, helium gas, etc.
- drying time 300 seconds or less are preferable, 200 seconds or less are more preferable, 120 seconds or less are still more preferable, and 80 seconds or less are especially preferable.
- limiting in particular in the minimum of drying time For example, a minimum can be 10 second, Preferably it is 20 second, More preferably, it can be 30 second.
- the first substrate on which the film containing the compound (A) is formed is treated with a polar solvent or the like. You may have the washing process washed with.
- substrate laminated body has the above-mentioned drying process, it is preferable to perform a washing
- ⁇ Second step> As a method of applying the crosslinking agent (B) onto the film containing the compound (A), the solution containing the crosslinking agent (B) is used to apply the crosslinking agent (B) onto the film containing the compound (A). The method of doing is mentioned.
- the solution containing a crosslinking agent (B) it can provide a crosslinking agent (B) on the film
- the first step, the drying step, the second step, and the cleaning step may be repeated after the second step, if necessary.
- the second substrate is laminated on the surface on which the film containing the compound (A) and the crosslinking agent (B) is formed.
- stacked in order is obtained.
- a film containing the compound (A) and the crosslinking agent (B) is formed on the surface of the second substrate on the first substrate side before the third step. It may be left.
- the pressure at which the third step is laminated is not particularly limited, and is preferably an absolute pressure of 10 ⁇ 4 Pa or more and less than atmospheric pressure.
- the absolute pressure is more preferably 10 ⁇ 3 Pa to atmospheric pressure, further preferably 100 Pa to atmospheric pressure, and particularly preferably 1000 Pa to atmospheric pressure.
- Lamination in the laminating step may be performed in an air atmosphere or in an inert gas (nitrogen gas, argon gas, helium gas, etc.) atmosphere.
- substrate laminated body has a heating process which heats the film
- the said temperature refers to the temperature of the surface in which the film
- the compound (A) and the crosslinking agent (B) react with each other by heating to obtain a reaction product, and a film containing the reaction product is formed.
- the temperature is preferably 100 ° C. to 450 ° C., more preferably 100 ° C. to 430 ° C., and further preferably 150 ° C. to 420 ° C.
- the temperature may be 70 ° C. to 250 ° C., 80 ° C. to 200 ° C., 85 ° C. to 170 ° C., or 90 ° C. to 150 ° C.
- Absolute pressure 17Pa super atmospheric pressure or less is preferable.
- the absolute pressure is more preferably 1000 Pa to atmospheric pressure, further preferably 5000 Pa to atmospheric pressure, and particularly preferably 10,000 Pa to atmospheric pressure.
- Heating in the heating step can be performed by a normal method using a furnace or a hot plate.
- a furnace for example, SPX-1120 manufactured by Apex, VF-1000LP manufactured by Koyo Thermo System Co., Ltd., or the like can be used.
- the heating in the heating step may be performed in an air atmosphere or an inert gas (nitrogen gas, argon gas, helium gas, etc.) atmosphere.
- the heating time in a heating process There is no restriction
- the heating time When the film containing the compound (A) and the crosslinking agent (B) is heated at 70 ° C. to 250 ° C., the heating time may be 300 seconds or less, may be 200 seconds or less, and 120 The time may be less than or equal to 80 seconds. In this case, the lower limit of the heating time is, for example, 10 seconds, preferably 20 seconds, and more preferably 30 seconds.
- the heating step the step of heating the film containing the compound (A) and the crosslinking agent (B) at 70 ° C. to 250 ° C. as described above (low temperature heating step) and the step of heating at 100 ° C. to 450 ° C. ( A high temperature heating step of heating at a higher temperature than the low temperature heating step).
- the surface of the first substrate on which the film containing the compound (A) and the crosslinking agent (B) is formed may be irradiated with ultraviolet rays.
- ultraviolet light having a wavelength of 170 nm to 230 nm, excimer light having a wavelength of 222 nm, excimer light having a wavelength of 172 nm, and the like are preferable.
- the heating process may be a process performed after the second process, and may be performed after the drying process or the cleaning process performed as necessary.
- the heating process may be performed before the third process, may be performed after the third process, or may be performed both before and after the third process.
- a heating process for heating and pressing may be performed after the third process, and after the second process, a heating process and a third process are performed in an arbitrary order, and then a heating process for performing heating and pressing is performed. Further, it may be performed.
- the pressing pressure in the heating step for heating and pressing is preferably 0.1 MPa to 50 MPa, more preferably 0.1 MPa to 10 MPa, and still more preferably 0.1 MPa to 5 MPa.
- the press device for example, TEST MINI PRESS manufactured by Toyo Seiki Seisakusho may be used.
- the heating temperature in the heating step for heating and pressing is preferably 100 ° C. to 450 ° C., more preferably 100 ° C. to 400 ° C., and further preferably 150 ° C. to 350 ° C.
- substrate laminated body may have a pressurization process which presses a laminated body after a 3rd process, Preferably after a 3rd process and a heating process.
- the pressing pressure in the pressurizing step is preferably 0.1 MPa to 50 MPa or less, and more preferably 0.1 MPa to 10 MPa.
- the press device for example, TEST MINI PRESS manufactured by Toyo Seiki Seisakusho may be used.
- the pressurization time is not particularly limited, but can be 0.5 seconds to 1 hour, for example.
- the temperature in the pressurizing step is preferably 10 ° C. or more and less than 100 ° C., more preferably 10 ° C. to 70 ° C., further preferably 15 ° C. to 50 ° C., and particularly preferably 20 ° C. to 30 ° C. .
- the said temperature refers to the temperature of the surface in which the film
- the laminate in at least one of the heating step and the pressurization step described above.
- the adhesion area increases and the bonding strength tends to be more excellent.
- the conditions at the time of pressing are as described above.
- substrate laminated body may have the post-heating process which heats a laminated body after a pressurization process.
- the bonding strength tends to be more excellent.
- preferable conditions in the post-heating step will be described.
- the description is abbreviate
- the heating temperature in the post-heating step is preferably 100 ° C to 450 ° C, more preferably 150 ° C to 420 ° C, and further preferably 150 ° C to 400 ° C.
- an absolute pressure of 17 Pa or more and an atmospheric pressure or less is preferable.
- the absolute pressure is more preferably 1000 Pa to atmospheric pressure, further preferably 5000 Pa to atmospheric pressure, and particularly preferably 10,000 Pa to atmospheric pressure.
- a second method for producing a substrate laminate has a cationic functional group containing at least one of a primary nitrogen atom and a secondary nitrogen atom on a first substrate, and a weight average molecular weight of 90 or more and 400,000 or less.
- a compound (A) having three or more —C ( ⁇ O) OX groups (X is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms) in the molecule; 1 to 6 of C ( ⁇ O) OX groups are —C ( ⁇ O) OH groups, and a film containing a crosslinking agent (B) having a weight average molecular weight of 200 to 600 is formed.
- the compound (A) is selected from the group consisting of an aliphatic amine having a weight average molecular weight of 10,000 to 400,000 and a compound having a weight average molecular weight of 130 to 10,000 having a siloxane bond (Si—O bond) and an amino group. It is preferable to contain at least one kind.
- a solution containing the compound (A) and the crosslinking agent (B) is used as a method for forming a film containing the compound (A) and the crosslinking agent (B) on the first substrate.
- a method of forming a film containing the compound (A) and the crosslinking agent (B) is used as a method for forming a film containing the compound (A) and the crosslinking agent (B) on the first substrate.
- the solution containing the compound (A) and the crosslinking agent (B) may be prepared by mixing the compound (A) and the crosslinking agent (B).
- a film containing the compound (A) and the crosslinking agent (B) may be formed on the first substrate.
- the above-described drying step and washing step may be performed as necessary.
- substrate is laminated
- the sixth step may be performed by the same method as the third step described above.
- the second manufacturing method of the substrate laminate includes a heating step of heating the film containing the compound (A) and the crosslinking agent (B) at 70 ° C. to 450 ° C. after the fifth step.
- the compound (A) and the crosslinking agent (B) react with each other by heating to obtain a reaction product, and an adhesive layer that is a film containing the reaction product is formed.
- the second manufacturing method may include a pressurizing step of pressing the laminate after the sixth step, preferably after the sixth step and after the heating step.
- a solution for forming an adhesive layer that is, a solution containing the compound (A), a solution containing the crosslinking agent (B), and the compound (A) and the crosslinking agent.
- the solution containing (B) preferably contains a polar solvent (D).
- Polar solvent (D) is added to compound (A), crosslinking agent (B), and a mixture of compound (A) and crosslinking agent (B) at an arbitrary timing for producing a solution for forming an adhesive layer. It may be added. Also, the timing of adding other components is not particularly limited.
- the content of the compound (A) in the solution containing the compound (A), or the solution containing the compound (A) and the crosslinking agent (B) is not particularly limited, and is, for example, 0.001% by mass to 30% by mass with respect to the entire solution. It is preferably 0.01% by mass or more and 20% by mass or less, more preferably 0.04% by mass or more and 20% by mass or less.
- a step of providing a crosslinking agent (B) on the film by forming a film containing the compound (A) on the surface of the first substrate and then applying a solution containing the crosslinking agent (B) on the film.
- membrane containing a compound (A) and a crosslinking agent (B) is formed by providing the solution containing a compound (A) and a crosslinking agent (B) to the surface of a 1st board
- the crosslinking agent (B) is contained in the solution containing the crosslinking agent (B).
- the amount or the content of the crosslinking agent (B) in the solution containing the compound (A) and the crosslinking agent (B) is not particularly limited.
- the crosslinking agent relative to the total number of nitrogen atoms in the compound (A) The ratio (COOH / N) of the number of carboxy groups in (B) is preferably 0.1 or more and 3.0 or less, more preferably 0.3 or more and 2.5 or less, and 0.4 More preferably, it is 2.2 or less.
- At least one additive (C) selected from the group consisting of non-performing bases (C-2) may be added to the compound (A) or the crosslinking agent (B).
- the timing which adds an additive (C) is not specifically limited.
- the acid (C-1) is added as the additive (C)
- a crosslinking agent (B) on the film in the second step.
- the cloudiness and gelatinization of a composition can be suppressed suitably.
- the acid (C-1) when the acid (C-1) is added as the additive (C), a mixture of the acid (C-1) and the compound (A), and a crosslinking agent (B) are added. It is preferable to mix. That is, it is preferable to mix the compound (A) and the acid (C-1) in advance before mixing the compound (A) and the crosslinking agent (B). Thereby, when the compound (A) and the crosslinking agent (B) are mixed, the composition becomes cloudy and gelled (when gelled, it may take time to clear the composition, which is not preferable). Can be suppressed.
- the base (C-2) is added as the additive (C)
- a film containing the compound (A) is formed in the first step, and then the crosslinking agent (B) is formed on the film.
- the base (C-2) when the base (C-2) is added as the additive (C), a mixture of the base (C-2) and the crosslinking agent (B), and the compound (A), It is preferable to mix. That is, it is preferable to mix the crosslinking agent (B) and the base (C-2) in advance before mixing the compound (A) and the crosslinking agent (B). Thereby, when the compound (A) and the crosslinking agent (B) are mixed, the composition becomes cloudy and gelled (when gelled, it may take time to clear the composition, which is not preferable). Can be suppressed.
- the thickness of the adhesive layer is reduced, and the bonding strength is further increased. It tends to be increased.
- Examples 1 to 11 and Comparative Examples 1 to 5 solutions for forming an adhesive layer were prepared. Details are as follows. In addition, when mixing the solution of the compound (A), the solution of the crosslinking agent (B), the solution obtained by adding the base (C-2) to the crosslinking agent (B), and other solutions, the solution is precipitated in each solution to be mixed. After confirming that there was nothing, it was mixed.
- Example 1 As compound (A), 4.0 g of 3-aminopropyldiethoxymethylsilane (3APDES; (3-Aminopropyl) diethoxymethylsilane) was prepared, and this was added to 56.0 g of 1-propanol (1PrOH), and further 8.8 mass. 20.0 g of aqueous solution of formic acid (FA) was added and dissolved so that 3APDES was 5% by mass. After stirring at room temperature for 1 hour, the mixture was heated in a 60 ° C. water bath for 1 hour to contain compound (A). A solution was obtained. In this solution, 3APDES exists as a hydrolyzate.
- 3APDES exists as a hydrolyzate.
- one methyl group that is a non-crosslinkable group, two hydroxyl groups that are crosslinkable groups, and one aminopropyl group that is a crosslinkable group are bonded to Si. That is, (non-crosslinkable group) / Si is 1.
- 1-propyl half ester trimellitic acid (1PrheTMA; 1-propyl half ester TMA) was prepared.
- 1PrheTMA was produced by adding trimellitic anhydride to 1-propanol to completely dissolve the trimellitic anhydride powder.
- a solution containing the compound (A) and a solution containing the crosslinking agent (B) are mixed so that the concentrations shown in Table 1 are obtained, and the compound (A), the crosslinking agent (B) and the acid (C-1) are mixed.
- Solution 1 containing was prepared.
- the concentration in parentheses in 3APDES represents the concentration of 3APDES in the solution containing the compound (A) and the crosslinking agent (B).
- the numerical value in parentheses in 1PrheTMA [1.03] is the ratio of the number of carboxy groups in 1PrheTMA as the crosslinking agent (B) to the number of total nitrogen atoms in 3APDES as the compound (A) (COOH / N) Represents.
- the number in parentheses of FA 1.83, is the ratio of the number of carboxy groups in FA as acid (C-1) to the number of total nitrogen atoms in 3APDES as compound (A) (COOH / N) Represents.
- the concentration in parentheses in 1PrOH (86.6% by mass) represents the concentration of 1PrOH in the solution containing the compound (A) and the crosslinking agent (B).
- Example 2 2.0 g of the solution 1 prepared in Example 1 was prepared, and this was added to 12.0 g of 1PrOH, and 6.0 g of water was further added, and the compound (A), the crosslinking agent (B) and the acid (C-1) were added. Solution 2 containing was prepared.
- the concentration in parentheses in 3APDES (0.2% by mass) represents the concentration of 3APDES in the solution containing compound (A) and crosslinking agent (B).
- the numerical value in parentheses in 1PrheTMA [1.03] is the ratio of the number of carboxy groups in 1PrheTMA as the crosslinking agent (B) to the number of total nitrogen atoms in 3APDES as the compound (A) (COOH / N) Represents.
- the number in parentheses of FA 1.83, is the ratio of the number of carboxy groups in FA as acid (C-1) to the number of total nitrogen atoms in 3APDES as compound (A) (COOH / N) Represents.
- the concentration in parentheses in 1PrOH (68.6% by mass) represents the concentration of 1PrOH in the solution containing the compound (A) and the crosslinking agent (B).
- TMA trimellitic acid
- NH 3 aqueous solution of ammonia
- the concentration in parentheses in BPEI (0.15% by mass) represents the concentration of BPEI in the solution containing the compound (A) and the crosslinking agent (B).
- the numerical value in parentheses in TMA [1.5] is the ratio of the number of carboxy groups in TMA as the crosslinking agent (B) to the number of total nitrogen atoms in BPEI as the compound (A) (COOH / N) Represents.
- the numerical value in parentheses of NH 3 is 1.5, the ratio of the number of total nitrogens in NH 3 as the base (C-2) to the number of carboxy groups in TMA as the crosslinking agent (B) (N / COOH).
- Example 4 to 11 solutions 4 to 8 were prepared in the same manner as in Example 1 except that the components and addition amounts shown in Table 1 were changed.
- concentrations in parentheses in 3APDES, 3APTES and BPEI which are compounds (A) represent the concentrations of 3APDES, 3APTES and BPEI in the solution containing compound (A) and crosslinking agent (B), respectively.
- the numbers in parentheses in 1PrheTMA, TMA, ehePMA, PMA and TMSA which are crosslinkers (B) are the ratio of the number of carboxy groups in the crosslinker (B) to the total number of nitrogen atoms in the compound (A) ( COOH / N).
- the numerical value in parentheses for FA represents the ratio (COOH / N) of the number of carboxy groups in FA which is acid (C-1) to the total number of nitrogen atoms in compound (A).
- the numerical value in parentheses of NH 3 represents the ratio (N / COOH) of the number of all nitrogens in NH 3 as the base (C-2) to the number of carboxy groups in the crosslinking agent (B).
- the concentrations in parentheses for 1PrOH and EtOH represent the concentrations of 1PrOH and EtOH in the solution containing the compound (A) and the crosslinking agent (B), respectively.
- Comparative Examples 1 to 5 Solutions 9 to 13 were prepared in the same manner as in Example 1 except that the components and addition amounts shown in Table 2 were changed.
- Comparative Example 1 biphenyltetracarboxylic dianhydride (BPDA) and paraphenylenediamine (pDA) were reacted in an N-methyl-2-pyrrolidone (NMP) solvent (97.5% by mass).
- NMP N-methyl-2-pyrrolidone
- a solution 9 containing polyamic acid (2.5% by mass) composed of BPDA and pDA was prepared.
- paraxylenediamine (pXDA) was dissolved in a mixed solvent of water and 1-propanol (1PrOH) and allowed to stand overnight to obtain a pXDA solution 1.
- a 4-inch ⁇ silicon substrate (silicon wafer) was prepared as a substrate on which the solution containing the compound (A) and the crosslinking agent (B) obtained above was applied.
- the silicon substrate was treated with UV (ultraviolet) ozone for 5 minutes, the silicon substrate was placed on a spin coater, and 2.0 mL of the composition prepared in each example and each comparative example was dropped at a constant rate for 10 seconds. After holding for 2 seconds, it was rotated at 2000 rpm (rpm is the rotation speed) for 1 second, at 600 rpm for 30 seconds, and then rotated at 2000 rpm for 10 seconds and dried. By this. An adhesive layer was formed on the silicon substrate. Next, as the above-described heating step (low temperature heating step), the adhesive layer was heated and dried at 125 ° C. for 1 minute.
- the thickness of the adhesive layer, the crosslinked structure, the smoothness of the surface, and the uniformity of the film thickness within the wafer were evaluated.
- the thickness of the adhesive layer was measured using an ellipsometer (Semilab Optical Porosimeter (PS-1100)). When the thickness was 10 nm or more, fitting was performed using an optical model of air / (Cauchy + Lorentz vibrator model) / natural oxide film / silicon substrate. When the thickness was less than 10 nm, fitting was performed using an optical model of air / SiO 2 / natural oxide film / silicon substrate. The results are shown in Tables 1 and 2.
- the crosslinked structure of the adhesive layer was measured by FT-IR (Fourier transform infrared spectroscopy).
- Example 4 The silicon wafer (first substrate) on which the adhesive layer was formed was heated at 400 ° C. for 10 minutes in a nitrogen atmosphere. Next, a 4-inch ⁇ silicon bare wafer (second substrate) treated with UV ozone for 5 minutes was bonded onto the silicon wafer (first substrate) on which the adhesive layer was formed. Then, thermocompression bonding was performed at 250 ° C. for 1 hour (60 minutes) and 1 MPa with a press device to obtain a substrate laminate.
- Example 6 and Comparative Example 5 The silicon wafer (first substrate) on which the adhesive layer was formed was heated at 400 ° C. for 10 minutes in a nitrogen atmosphere. Next, a 4-inch ⁇ silicon bare wafer (second substrate) treated with UV ozone for 5 minutes was bonded onto the silicon wafer (first substrate) on which the adhesive layer was formed. And it crimped
- the tensile bond strength, outgas, and void were evaluated for the obtained substrate laminates of Examples and Comparative Examples.
- the substrate laminate was cut into 1 cm ⁇ 1 cm square using a dicer (DAD 3240, manufactured by Disco Corporation). Subsequently, metal pins with an epoxy resin of 7 mm ⁇ were adhered to the upper and lower surfaces of the cut laminate (epoxy curing at room temperature) to form a sample for measuring the tensile bond strength. Using the sample for measuring the tensile bond strength, the yield point was measured with a tensile tester. Tables 1 and 2 show the tensile bond strength obtained from the yield point.
- the substrate laminate was cut into a 7 mm ⁇ 7 mm square using a dicer (manufactured by Disco Corporation, DAD3240) to produce an outgas measurement sample.
- the outgas amount was measured by heating with EMD-WA1000S manufactured by ESCO.
- the atmospheric pressure (base pressure) is 10 ⁇ 7 Pa, and the heating rate is 30 ° C./min.
- As the surface temperature of the silicon substrate a material obtained by calibrating the temperature of the thermocouple under the stage using the outgas peak of the standard data (H + implanted silicon, CaC 2 O 4 dropping Ar + implanted silicon wafer) was used. The temperature was raised and the temperature at which the outgas pressure reached 2 ⁇ 10 ⁇ 6 Pa was determined. The results are shown in Tables 1 and 2. The higher the temperature, the less likely outgassing occurs.
- the substrate laminate was placed on an IR lamp stage of IR200 manufactured by SUSS MICROTECH. Next, the void was observed through the second substrate by an IR camera installed on the stage. The void area ratio was calculated by dividing the total void area by the total area where transmitted light could be observed. A case where the void area ratio was 30% or less was determined to be good, and a case where the void area ratio exceeded 30% was determined to be defective. The results are shown in Tables 1 and 2.
- the bonding strength of the substrate laminate of each example was 5 MPa or more, and it was found that a high bonding strength can be obtained by using a reaction product of the compound (A) and the crosslinking agent (B) as an adhesive layer. It was also found that a thin film of 6.9 nm to 2536 nm was formed as the adhesive layer used in each of Examples 1 to 11. In the substrate laminate of Comparative Example 4, a plurality of portions where the adhesive layer was repelled on the silicon wafer were generated with a size of several mm, which was unsuitable as a substrate laminate.
- Example 4 to 11 in which the voids were evaluated the voids were suppressed as compared with Comparative Example 2, Comparative Example 4 and Comparative Example 5 in which the voids were evaluated.
- Example 1 and Examples 5 to 11 in which the outgas was evaluated the temperature at which the outgas pressure became 2 ⁇ 10 ⁇ 6 Pa as compared with Comparative Example 2 and Comparative Example 5 in which the outgas was evaluated. The outgassing was suppressed. From the above, it is presumed that in the substrate laminates of the respective examples, unintended peeling is less likely to occur compared to the substrate laminates of the respective comparative examples.
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Abstract
Description
[特許文献]
[特許文献1]特開平4-132258号公報
[特許文献2]特開2010-226060号公報
[特許文献3]特開2016-47895号公報
[非特許文献]
[非特許文献1]A.Bayrashev, B.Ziaie, Sensors and Actuators A 103 (2003) 16-22.
[非特許文献2]Q. Y. Tong, U. M. Gosele, Advanced Material 11, No. 17 (1999) 1409-1425.
<2> 前記接着層の厚さは、0.1nm~5000nmである、<1>に記載の基板積層体。
<3> 引張接合強度が5MPa以上である、<1>又は<2>に記載の基板積層体。
<4> 前記架橋剤(B)は、分子内に環構造を有する、<1>~<3>のいずれか1つに記載の基板積層体。
<5> 前記架橋剤(B)における前記環構造は、2つ以上の-C(=O)OX基を有する環構造である、<4>に記載の基板積層体。
<6> 前記環構造は、ベンゼン環及びナフタレン環の少なくとも一方である、<4>又は<5>に記載の基板積層体。
<7> 前記架橋剤(B)は、前記3つ以上の-C(=O)OX基において、少なくとも1つのXが炭素数1以上6以下のアルキル基である、<1>~<6>のいずれか1つに記載の基板積層体。
<8> 前記シロキサン結合(Si-O結合)とアミノ基とを有する重量平均分子量130以上10000以下の化合物は、Si元素と、Si元素に結合する非架橋性基とのモル比が、(非架橋性基)/Si<2の関係を満たす、<1>~<7>のいずれか1つに記載の基板積層体。
<9> 前記反応物は、アミド結合及びイミド結合の少なくとも一方を有する、<1>~<8>のいずれか1つに記載の基板積層体。
<10> 減圧下におけるアウトガスの圧力が2×10-6Paになる温度が400℃以上である、<1>~<9>のいずれか1つに記載の基板積層体。
<11> 前記第1の基板及び前記第2の基板の少なくとも一方は、前記接着層側の面に電極を備える、<1>~<10>のいずれか1つに記載の基板積層体。
<12> 前記第1の基板及び前記第2の基板の少なくとも一方は、Si、Al、Ti、Zr、Hf、Fe、Ni、Cu、Ag、Au、Ga、Ge、Sn、Pd、As、Pt、Mg、In、Ta及びNbからなる群から選ばれる少なくとも1種の元素を含む、<1>~<11>のいずれか1つに記載の基板積層体。
<13> 前記第1の基板及び前記第2の基板の少なくとも一方は、Si、Ga、Ge及びAsからなる群から選ばれる少なくとも1種の元素を含む半導体基板である、<12>に記載の基板積層体。
<14> 第1の基板と、接着層と、第2の基板と、がこの順で積層され、前記接着層の厚さが0.1nm~5000nmであり、引張接合強度が5MPa以上である基板積層体。
<16> 第1の基板上に、1級窒素原子及び2級窒素原子の少なくとも1つを含むカチオン性官能基を有し、重量平均分子量が90以上40万以下である化合物(A)と、分子内に-C(=O)OX基(Xは、水素原子又は炭素数1以上6以下のアルキル基である)を3つ以上有し、3つ以上の-C(=O)OX基のうち、1つ以上6つ以下が-C(=O)OH基であり、重量平均分子量が200以上600以下である架橋剤(B)とを含む膜を形成する第5工程と、前記化合物(A)と前記架橋剤(B)とを含む膜が形成された面に第2の基板を積層する第6工程と、前記化合物(A)と前記架橋剤(B)とを含む膜を、70℃~450℃に加熱し、前記化合物(A)と前記架橋剤(B)との反応物を含む接着層を形成する加熱工程と、を有し、前記化合物(A)は、重量平均分子量1万以上40万以下の脂肪族アミン、及びシロキサン結合(Si-O結合)とアミノ基とを有する重量平均分子量130以上10000以下の化合物からなる群より選ばれる少なくとも1種を含む、基板積層体の製造方法。
<17> 前記第1の基板又は前記第2の基板の、前記化合物(A)と前記架橋剤(B)とを含む膜が形成される側の面が、水酸基、エポキシ基、カルボキシ基、アミノ基、及びメルカプト基からなる群より選ばれる少なくとも1種を有する、<15>又は<16>に記載の基板積層体の製造方法。
<18> 前記第1の基板及び前記第2の基板の少なくとも一方は、Si、Al、Ti、Zr、Hf、Fe、Ni、Cu、Ag、Au、Ga、Ge、Sn、Pd、As、Pt、Mg、In、Ta、及びNbからなる群から選ばれる少なくとも1種の元素を含み、前記水酸基、エポキシ基、カルボキシ基、アミノ基及びメルカプト基からなる群より選ばれる少なくとも1種は、前記少なくとも1種の元素と結合している、<17>に記載の基板積層体の製造方法。
<19> 前記第1の基板又は前記第2の基板の、前記化合物(A)と前記架橋剤(B)とを含む膜が形成される側の面が、シラノール基(Si-OH基)を有する、<18>に記載の基板積層体の製造方法。
本明細書中に段階的に記載されている数値範囲において、一つの数値範囲で記載された上限値又は下限値は、他の段階的な記載の数値範囲の上限値又は下限値に置き換えてもよい。また、本開示中に記載されている数値範囲において、その数値範囲の上限値又は下限値は、実施例に示されている値に置き換えてもよい。
以下、本発明の基板積層体の一実施形態について説明する。本実施形態の基板積層体は、第1の基板、1級窒素原子及び2級窒素原子の少なくとも1つを含むカチオン性官能基を有し、重量平均分子量が90以上40万以下である化合物(A)と、分子内に-C(=O)OX基(Xは、水素原子又は炭素数1以上6以下のアルキル基である)を3つ以上有し、3つ以上の-C(=O)OX基のうち、1つ以上6つ以下が-C(=O)OH基であり、重量平均分子量が200以上600以下である架橋剤(B)との反応物を含む接着層、並びに 第2の基板、が順に積層されたものである。また、前記化合物(A)は、重量平均分子量1万以上40万以下の脂肪族アミン、及びシロキサン結合(Si-O結合)とアミノ基とを有する重量平均分子量130以上10000以下の化合物からなる群より選ばれる少なくとも1種を含むことが好ましい。
本実施形態の基板積層体は、1級窒素原子及び2級窒素原子の少なくとも1つを含むカチオン性官能基を有し、重量平均分子量が90以上40万以下である化合物(A)と、分子内に-C(=O)OX基(Xは、水素原子又は炭素数1以上6以下のアルキル基である)を3つ以上有し、3つ以上の-C(=O)OX基のうち、1つ以上6つ以下が-C(=O)OH基であり、重量平均分子量が200以上600以下である架橋剤(B)との反応物を含む接着層を備える。この接着層は、基板同士の接合強度に優れ、基板の剥離を抑制することができる。
化合物(A)は、1級窒素原子及び2級窒素原子の少なくとも1つを含むカチオン性官能基を有し、重量平均分子量が90以上40万以下である化合物である。カチオン性官能基としては、正電荷を帯びることができ、かつ1級窒素原子及び2級窒素原子の少なくとも1つを含む官能基であれば特に限定されない。
また、「2級窒素原子」とは、水素原子1つ及び水素原子以外の原子2つのみに結合している窒素原子(即ち、下記式(a)で表される官能基に含まれる窒素原子)、又は、水素原子2つ及び水素原子以外の原子2つのみに結合している窒素原子(カチオン)を指す。
また、「3級窒素原子」とは、水素原子以外の原子3つのみに結合している窒素原子(即ち、下記式(b)で表される官能基である窒素原子)、又は、水素原子1つ及び水素原子以外の原子3つのみに結合している窒素原子(カチオン)を指す。
ここで、前記式(a)で表される官能基は、2級アミノ基(-NHRa基;ここで、Raはアルキル基を表す)の一部を構成する官能基であってもよいし、ポリマーの骨格中に含まれる2価の連結基であってもよい。
また、前記式(b)で表される官能基(即ち、3級窒素原子)は、3級アミノ基(-NRbRc基;ここで、Rb及びRcは、それぞれ独立に、アルキル基を表す)の一部を構成する官能基であってもよいし、ポリマーの骨格中に含まれる3価の連結基であってもよい。
具体的には、重量平均分子量は、展開溶媒として硝酸ナトリウム濃度0.1mol/Lの水溶液を用い、分析装置Shodex DET RI-101及び2種類の分析カラム(東ソー製 TSKgel G6000PWXL-CP及びTSKgel G3000PWXL-CP)を用いて流速1.0mL/minで屈折率を検出し、ポリエチレングリコール/ポリエチレンオキサイドを標準品として解析ソフト(Waters製 Empower3)にて算出される。
前記ノニオン性官能基は、水素結合受容基であっても、水素結合供与基であってもよい。前記ノニオン性官能基としては、例えば、ヒドロキシ基、カルボニル基、エーテル基(-O-)、等を挙げることができる。
前記アニオン性官能基は、負電荷を帯びることができる官能基であれば特に制限はない。前記アニオン性官能基としては、例えば、カルボン酸基、スルホン酸基、硫酸基等を挙げることができる。
これらのポリアルキレンイミン誘導体は、上記ポリアルキレンイミンを用いて通常行われる方法により製造することができる。具体的には例えば、特開平6-016809号公報等に記載の方法に準拠して製造することができる。
高分岐型のポリアルキレンイミンを得る方法としては、例えば、骨格中に複数の2級窒素原子を有するポリアルキレンイミンに対してカチオン性官能基含有モノマーを反応させ、前記複数の2級窒素原子のうちの少なくとも1つをカチオン性官能基含有モノマーによって置換する方法、末端に複数の1級窒素原子を有するポリアルキレンイミンに対してカチオン性官能基含有モノマーを反応させ、前記複数の1級窒素原子のうちの少なくとも1つをカチオン性官能基含有モノマーによって置換する方法等、が挙げられる。
分岐度を向上するために導入されるカチオン性官能基としては、アミノエチル基、アミノプロピル基、ジアミノプロピル基、アミノブチル基、ジアミノブチル基、トリアミノブチル基等を挙げることができるが、カチオン性官能基当量を小さくしカチオン性官能基密度を大きくする点から、アミノエチル基が好ましい。
アミノ基を有するシランカップリング剤としては、例えば下記式(A-3)で表される化合物が挙げられる。
R1、R2、R3、R4、R5、X1、X2におけるアルキル基及びアルキレン基の置換基としては、それぞれ独立に、アミノ基、ヒドロキシ基、アルコキシ基、シアノ基、カルボン酸基、スルホン酸基、ハロゲン等が挙げられる。
Arにおける2価又は3価の芳香環としては、例えば、2価又は3価のベンゼン環が挙げられる。X2におけるアリール基としては、例えば、フェニル基、メチルベンジル基、ビニルベンジル基等が挙げられる。
また、分子内にSi-O結合を有さず、環構造を有する重量平均分子量90以上600以下のアミン化合物としては、架橋剤(B)とともにアミド、アミドイミド、イミドなどの熱架橋構造を形成し易く、耐熱性を高めることができる点から、1級アミノ基を有する化合物が好ましい。更に、前述のアミン化合物としては、架橋剤(B)とともにアミド、アミドイミド、イミドなどの熱架橋構造の数を多くし易く、耐熱性をより高めることができる点から、1級アミノ基を2つ有するジアミン化合物、1級アミノ基を3つ有するトリアミン化合物等が好ましい。
芳香環アミンとしては、例えば、ジアミノジフェニルエーテル、キシレンジアミン(好ましくはパラキシレンジアミン)、ジアミノベンゼン、ジアミノトルエン、メチレンジアニリン、ジメチルジアミノビフェニル、ビス(トリフルオロメチル)ジアミノビフェニル、ジアミノベンゾフェノン、ジアミノベンズアニリド、ビス(アミノフェニル)フルオレン、ビス(アミノフェノキシ)ベンゼン、ビス(アミノフェノキシ)ビフェニル、ジカルボキシジアミノジフェニルメタン、ジアミノレゾルシン、ジヒドロキシベンジジン、ジアミノベンジジン、1,3,5-トリアミノフェノキシベンゼン、2,2’-ジメチルベンジジン、トリス(4-アミノフェニル)アミン、2,7-ジアミノフルオレン、1,9-ジアミノフルオレン、ジベンジルアミンなどが挙げられる。
複素環アミンの複素環としては、ヘテロ原子として硫黄原子を含む複素環(例えば、チオフェン環)、又は、ヘテロ原子として窒素原子を含む複素環(例えば、ピロール環、ピロリジン環、ピラゾール環、イミダゾール環、トリアゾール環等の5員環;イソシアヌル環、ピリジン環、ピリダジン環、ピリミジン環、ピラジン環、ピペリジン環、ピペラジン環、トリアジン環等の6員環;インドール環、インドリン環、キノリン環、アクリジン環、ナフチリジン環、キナゾリン環、プリン環、キノキサリン環等の縮合環等)などが挙げられる。
例えば、窒素を含有する複素環を有する複素環アミンとしては、メラミン、アンメリン、メラム、メレム、トリス(4-アミノフェニル)アミンなどが挙げられる。
更に、複素環と芳香環の両方を有するアミン化合物としては、N2,N4,N6-トリス(4-アミノフェニル)-1,3,5-トリアジン-2,4,6-トリアミンなどが挙げられる。
また、化合物(A)は、一級又は二級のアミノ基を有するため、後述の極性溶媒(D)に容易に溶解する。極性溶媒(D)に容易に溶解する化合物(A)を用いることで、シリコン基板などの基板の親水性表面との親和性が高くなるため、平滑な膜を形成しやすく、接着層の厚さを薄くすることができる。
架橋剤(B)は、分子内に-C(=O)OX基(Xは、水素原子又は炭素数1以上6以下のアルキル基である)を3つ以上有し、3つ以上の-C(=O)OX基(以下、「COOX」とも称する。)のうち、1つ以上6つ以下が-C(=O)OH基(以下、「COOH」とも称する。)であり、重量平均分子量が200以上600以下である化合物である。
(4,4'-(1,4-phenylenebis(oxy))diphthalic acid)、4,4’-([1,1’-ビフェニル]-4,4’-ジルビス(オキシ))ジフタル酸(4,4'-([1,1'-biphenyl]-4,4'-diylbis(oxy))diphthalic acid)、4,4’-((オキシビス(4,1-フェニレン))ビス(オキシ))ジフタル酸(4,4'-((oxybis(4,1-phenylene))bis(oxy))diphthalic acid)等
のジフタル酸;ペリレン-3,4,9,10-テトラカルボン酸等のペリレンカルボン酸;アントラセン-2,3,6,7-テトラカルボン酸等のアントラセンカルボン酸;4,4’-(ヘキサフルオロイソプロピリデン)ジフタル酸、9,9-ビス(トリフルオロメチル)-9H-キサンテン-2,3,6,7-テトラカルボン酸、1,4-ジトリフルオロメチルピロメリット酸等のフッ化芳香環カルボン酸が挙げられる。
本実施形態の基板積層体中の接着層を形成するための溶液、例えば、後述する基板積層体の製造方法で用いる化合物(A)を含む溶液、架橋剤(B)を含む溶液、化合物(A)及び架橋剤(B)を含む溶液は、極性溶媒(D)を含むことが好ましい。ここで、極性溶媒(D)とは室温における比誘電率が5以上である溶媒を指す。極性溶媒(D)としては、具体的には、水、重水などのプロトン性無機化合物;メタノール、エタノール、1-プロパノール、2-プロパノール、1-ブタノール、2-ブタノール、イソブチルアルコール、イソペンチルアルコール、シクロヘキサノール、エチレングリコール、プロピレングリコール、2-メトキシエタノール、2-エトキシエタノール、ベンジルアルコール、ジエチレングリコール、トリエチレングリコール、グリセリンなどのアルコール類;テトラヒドロフラン、ジメトキシエタンなどのエーテル類;フルフラール、アセトン、エチルメチルケトン、シクロヘキサンなどのアルデヒド・ケトン類;無水酢酸、酢酸エチル、酢酸ブチル、炭酸エチレン、炭酸プロピレン、ホルムアルデヒド、N-メチルホルムアミド、N,N-ジメチルホルムアミド、N-メチルアセトアミド、N,N-ジメチルアセトアミド、N-メチル-2-ピロリドン、ヘキサメチルリン酸アミドなどの酸誘導体;アセトニトリル、プロピロニトリルなどのニトリル類;ニトロメタン、ニトロベンゼンなどのニトロ化合物;ジメチルスルホキシドなどの硫黄化合物が挙げられる。極性溶媒(D)としては、プロトン性溶媒を含むことが好ましく、水を含むことがより好ましく、超純水を含むことが更に好ましい。
接着層を形成するための溶液中における極性溶媒(D)の含有量は、特に限定されず、例えば、溶液全体に対して1.0質量%以上99.99896質量%以下であり、40質量%以上99.99896質量%以下であることが好ましい。
極性溶媒(D)の沸点としては、接着層を形成するときの加熱により極性溶媒(D)を揮発させ、接着層中の残溶媒の量を少なくする点から、150℃以下が好ましく、120℃以下がより好ましい。
本実施形態の基板積層体中の接着層を形成するための溶液は、前述の化合物(A)、架橋剤(B)及び極性溶媒(D)のほかに添加剤(C)を含んでいてもよい。添加剤(C)としては、カルボキシ基を有する重量平均分子量46以上195以下の酸(C-1)、窒素原子を有する重量平均分子量17以上120以下の環構造を有しない塩基(C-2)が挙げられる。また、接着層を形成するときの加熱により添加剤(C)は揮発するが、本実施形態の基板積層体中の接着層は、添加剤(C)を含んでいてもよい。
本実施形態の基板積層体中の接着層は、ナトリウム及びカリウムの含有量がそれぞれ元素基準で10質量ppb以下であることが好ましい。ナトリウム又はカリウムの含有量がそれぞれ元素基準で10質量ppb以下であれば、トランジスタの動作不良など半導体装置の電気特性に不都合が発生することを抑制できる。
また、基板積層体中の接着層を形成するための溶液は、例えば銅の腐食を抑制するため、ベンゾトリアゾール又はその誘導体を含有していてもよい。
本実施形態の基板積層体は、第1の基板、前述の接着層及び第2の基板がこの順に積層されてなる。
第1の基板及び第2の基板としては、Si、Al、Ti、Zr、Hf、Fe、Ni、Cu、Ag、Au、Ga、Ge、Sn、Pd、As、Pt、Mg、In、Ta及びNbからなる群から選ばれる少なくとも1種の元素を含むことが好ましく、Si、Ga、Ge及びAsからなる群より選ばれる少なくとも1種の元素を含むことがより好ましく、Si、Ga、Ge及びAsからなる群より選ばれる少なくとも1種の元素を含む半導体基板であることが更に好ましい。第1の基板及び第2の基板の材質としては、例えば、半導体:Si、InP、GaN、GaAs、InGaAs、InGaAlAs、SiGe、SiC、酸化物、炭化物、窒化物:ホウ素珪酸ガラス(パイレックス(登録商標))、石英ガラス(SiO2)、サファイア(Al2O3)、ZrO2、Si3N4、AlN、MgAl2O4、圧電体、誘電体:BaTiO3、LiNbO3,SrTiO3、LiTaO3、ダイヤモンド、金属:Al、Ti、Fe、Cu、Ag、Au、Pt、Pd、Ta、Nbなどである。
Siは、半導体メモリー、LSIの積層、CMOSイメージセンサー、MEMS封止、光学デバイス、LEDなど;
SiO2は、半導体メモリー、LSIの積層、MEMS封止、マイクロ流路、CMOSイメージセンサー、光学デバイス、LEDなど;
BaTiO3、LiNbO3,SrTiO3、LiTaO3は、弾性表面波デバイス;
PDMSは、マイクロ流路;
InGaAlAs、InGaAs、InPは、光学デバイス;
InGaAlAs、GaAs、GaNは、LEDなど。
以下に、各用途における基板積層体の積層構造の例を示す。
MEMSパッケージング用;Si/接着層/Si、SiO2/接着層/Si、SiO2/接着層/SiO2、Cu/接着層/Cu、
マイクロ流路用;PDMS/接着層/PDMS、PDMS/接着層/SiO2、
CMOSイメージセンサー用;SiO2/接着層/SiO2、Si/接着層/Si、SiO2/接着層/Si、
シリコン貫通ビア(TSV)用;SiO2(Cu電極付き)/接着層/SiO2(Cu電極付き)、
メモリー、LSI用;SiO2/接着層/SiO2
光学デバイス用;(InGaAlAs、InGaAs、InP、GaAs)/接着層/Si、
LED用;(InGaAlAs、GaAs、GaN)/接着層/Si、(InGaAlAs、GaAs、GaN)/接着層/SiO2、(InGaAlAs、GaAs、GaN)/接着層/(Au、Ag、Al)、InGaAlAs、GaAs、GaN)/接着層/サファイア、
弾性表面波デバイス用;(BaTiO3、LiNbO3、SrTiO3、LiTaO3)/接着層/(MgAl2O4、SiO2、Si、Al2O3))。
以下、本発明の一実施形態の基板積層体の製造方法について説明する。例えば、本実施形態の基板積層体の製造方法としては、以下に説明する第1の製造方法及び第2の製造方法が挙げられる。なお、本発明の基板積層体の製造方法としては、これらに限定されない。
基板積層体の第1の製造方法は、第1の基板上に、1級窒素原子及び2級窒素原子の少なくとも1つを含むカチオン性官能基を有し、重量平均分子量が90以上40万以下である化合物(A)を含む膜を形成する第1工程と、前記膜上に、分子内に-C(=O)OX基(Xは、水素原子又は炭素数1以上6以下のアルキル基である)を3つ以上有し、3つ以上の-C(=O)OX基のうち、1つ以上6つ以下が-C(=O)OH基であり、重量平均分子量が200以上600以下である架橋剤(B)を付与する第2工程と、前記化合物(A)と前記架橋剤(B)とを含む膜が形成された面に第2の基板を積層する第3工程と、前記化合物(A)と前記架橋剤(B)とを含む膜を、70℃~450℃に加熱し、前記化合物(A)と前記架橋剤(B)との反応物を含む接着層を形成する加熱工程と、を有する。
化合物(A)は、重量平均分子量1万以上40万以下の脂肪族アミン、及びシロキサン結合(Si-O結合)とアミノ基とを有する重量平均分子量130以上10000以下の化合物からなる群より選ばれる少なくとも1種を含むことが好ましい。
以下、基板積層体の第1の製造方法の各工程について説明する。
第1の基板上に、化合物(A)を含む膜を形成する方法としては、化合物(A)を含む溶液を用いて、基板上に化合物(A)を含む膜を形成する方法が挙げられる。膜の形成方法としては特に制限されず、通常用いられる方法を採用すればよい。
スピンコート法による化合物(A)を含む膜を形成する方法において、基板の回転数、化合物(A)を含む溶液の滴下量及び滴下時間、乾燥時の基板の回転数などの諸条件については特に制限はなく、形成する膜の厚さなどを考慮しながら適宜調整すればよい。
基板積層体の第1の製造方法は、化合物(A)を含む膜が形成された第1の基板を、温度70℃以上250℃以下の条件で乾燥する乾燥工程を有していてもよい。なお、前記温度は、第1の基板の化合物(A)を含む膜が形成された面の温度を指す。
具体的には、温度が70℃以上であることにより、SiO2に付与されたポリマーの残存性が好適に維持される。また、温度が250℃以下であることにより、Cuにポリマーがより残存し難くすることができる。
上記温度は、80℃~200℃がより好ましく、85℃~170℃がより好ましく、90℃~150℃が更に好ましい。
乾燥を行う雰囲気には特に制限はなく、例えば、大気雰囲気下で行ってもよいし、不活性ガス(窒素ガス、アルゴンガス、ヘリウムガス等)雰囲気下で行ってもよい。
乾燥時間については特に制限はなく、300秒以下が好ましく、200秒以下がより好ましく、120秒以下が更に好ましく、80秒以下が特に好ましい。
乾燥時間の下限には特に制限はなく、下限は、例えば10秒、好ましくは20秒、より好ましくは30秒とすることができる。
基板積層体の第1の製造方法は、第1の基板に付与された余分な化合物(A)を除去するために、化合物(A)を含む膜が形成された第1の基板を極性溶媒等で洗浄する洗浄工程を有していてもよい。また、基板積層体の第1の製造方法が、前述の乾燥工程を有する場合、乾燥工程の後に、洗浄工程を行うことが好ましく、乾燥工程の後かつ第2工程の後に、洗浄工程を行うことがより好ましい。
化合物(A)を含む膜上に、架橋剤(B)を付与する方法としては、架橋剤(B)を含む溶液を用いて、化合物(A)を含む膜上に架橋剤(B)を付与する方法が挙げられる。架橋剤(B)を含む溶液を用いる場合、第1工程に記載した方法と同様にして、化合物(A)を含む膜上に架橋剤(B)を付与できる。
第2工程の後、又は後述する加熱工程の後、化合物(A)と架橋剤(B)とを含む膜が形成された面に第2の基板を積層する。これにより、第1の基板、化合物(A)と架橋剤(B)とを含む膜、及び第2の基板が順に積層された積層体が得られる。なお、接合強度をより向上させる観点から、第3工程の前に、第2の基板における第1の基板側の表面に、化合物(A)と架橋剤(B)とを含む膜を形成しておいてもよい。
また、前記絶対圧は、10-3Pa以上大気圧以下がより好ましく、100Pa以上大気圧以下が更に好ましく、1000Pa以上大気圧以下が特に好ましい。
積層工程における積層は、大気雰囲気下で行ってもよく、不活性ガス(窒素ガス、アルゴンガス、ヘリウムガス等)雰囲気下で行ってもよい。
基板積層体の第1の製造方法は、第2工程の後、化合物(A)と架橋剤(B)とを含む膜を、70℃~450℃で加熱する加熱工程を有する。
なお、前記温度は、第1の基板又は第2の基板の化合物(A)と架橋剤(B)とを含む膜が形成された面の温度を指す。
この加熱工程を有することにより、化合物(A)と架橋剤(B)とを含む膜に含まれる溶媒が除去される。また、化合物(A)と架橋剤(B)とが加熱により反応して反応物が得られ、その反応物を含む膜が形成される。
前記温度は、100℃~450℃が好ましく、100℃~430℃がより好ましく、150℃~420℃が更に好ましい。また、前記温度は、70℃~250℃であってもよく、80℃~200℃であってもよく、85℃~170℃であってもよく、90℃~150℃であってもよい。
前記絶対圧は、1000Pa以上大気圧以下がより好ましく、5000Pa以上大気圧以下が更に好ましく、10000Pa以上大気圧以下が特に好ましい。
また、加熱工程における加熱は、大気雰囲気下で行ってもよく、不活性ガス(窒素ガス、アルゴンガス、ヘリウムガス等)雰囲気下で行ってもよい。
また、化合物(A)と架橋剤(B)とを含む膜を、70℃~250℃で加熱する場合、加熱時間は300秒以下であってもよく、200秒以下であってもよく、120秒以下であってもよく、80秒以下であってもよい。この場合の加熱時間の下限としては、例えば10秒、好ましくは20秒、より好ましくは30秒とすることができる。
加熱とプレスを行う加熱工程におけるプレス圧は、0.1MPa~50MPaが好ましく、0.1MPa~10MPaがより好ましく、0.1MPa~5MPaが更に好ましい。プレス装置としては、例えば、(株)東洋精機製作所 製のTEST MINI PRESS等を用いればよい。
また、加熱とプレスを行う加熱工程における加熱温度は、100℃~450℃が好ましく、100℃~400℃がより好ましく、150℃~350℃が更に好ましい。これにより、基板に半導体回路が形成されている場合に、半導体回路へのダメージが抑制される傾向にある。
基板積層体の第1の製造方法は、第3工程の後、好ましくは第3工程の後かつ加熱工程の後、積層体をプレスする加圧工程を有していてもよい。加圧工程におけるプレス圧は0.1MPa~50MPa以下が好ましく、0.1MPa10MPaがより好ましい。プレス装置としては、例えば、(株)東洋精機製作所 製のTEST MINI PRESS等を用いればよい。また、加圧時間は、特に制限されないが、例えば0.5秒~1時間とすることができる。
なお、前記温度は、第1の基板又は第2の基板の化合物(A)と架橋剤(B)とを含む膜が形成された面の温度を指す。
基板積層体の第1の製造方法は、加圧工程の後、積層体を加熱する後加熱工程を有していてもよい。
前述の加圧工程及び後加熱工程を有することにより、接合強度がより優れる傾向にある。
以下、後加熱工程における好ましい条件について説明する。なお、前述の過熱工程と共通する事項についてはその説明を省略する。
後加熱工程における加熱温度は、100℃~450℃が好ましく、150℃~420℃がより好ましく、150℃~400℃が更に好ましい。
また、後加熱工程における加熱が行われるときの圧力としては、絶対圧17Pa超大気圧以下が好ましい。
前記絶対圧は、1000Pa以上大気圧以下がより好ましく、5000Pa以上大気圧以下が更に好ましく、10000Pa以上大気圧以下が特に好ましい。
後加熱工程では、積層体のプレスは行わないことが好ましい。
基板積層体の第2の製造方法は、第1の基板上に、1級窒素原子及び2級窒素原子の少なくとも1つを含むカチオン性官能基を有し、重量平均分子量が90以上40万以下である化合物(A)と、分子内に-C(=O)OX基(Xは、水素原子又は炭素数1以上6以下のアルキル基である)を3つ以上有し、3つ以上の-C(=O)OX基のうち、1つ以上6つ以下が-C(=O)OH基であり、重量平均分子量が200以上600以下である架橋剤(B)とを含む膜を形成する第5工程と、前記化合物(A)と前記架橋剤(B)とを含む膜が形成された面に第2の基板を積層する第6工程と、前記化合物(A)と前記架橋剤(B)とを含む膜を、70℃~450℃に加熱し、前記化合物(A)と前記架橋剤(B)との反応物を含む接着層を形成する加熱工程と、を有する。
前記化合物(A)は、重量平均分子量1万以上40万以下の脂肪族アミン、及びシロキサン結合(Si-O結合)とアミノ基とを有する重量平均分子量130以上10000以下の化合物からなる群より選ばれる少なくとも1種を含むことが好ましい。
第1の基板上に、化合物(A)と架橋剤(B)とを含む膜を形成する方法としては、化合物(A)及び架橋剤(B)を含む溶液を用いて、第1の基板上に化合物(A)と架橋剤(B)とを含む膜を形成する方法が挙げられる。化合物(A)及び架橋剤(B)を含む溶液は、化合物(A)と架橋剤(B)を混合して用意すればよい。第1工程に記載した方法と同様にして、第1の基板上に化合物(A)と架橋剤(B)とを含む膜を形成すればよい。
第5工程の後、第1の製造方法と同様、前述の乾燥工程、及び洗浄工程を必要に応じて経てもよい。
化合物(A)と架橋剤(B)とを含む膜が付与された面に第2の基板を積層する。第6工程は、前述の第3工程と同様の方法で行えばよい。
基板積層体の第2の製造方法は、第5工程の後、化合物(A)と架橋剤(B)とを含む膜を、70℃~450℃で加熱する加熱工程を有する。
この加熱工程を有することにより、化合物(A)と架橋剤(B)とが加熱により反応して反応物が得られ、その反応物を含む膜である接着層が形成される。
第2の製造方法における加熱工程は、前述の第1の製造方法における加熱工程と同様の方法で行えばよい。
また、第2の製造方法において、第6工程の後、好ましくは第6工程の後かつ加熱工程の後、積層体をプレスする加圧工程を有していてもよい。第2の製造方法における加圧工程は、前述の第1の製造方法における加圧工程と同様の方法で行えばよい。
また、第2の製造方法において、加圧工程の後に積層体を加熱する後加熱工程を有していてもよい。第2の製造方法における後加熱工程は、前述の第1の製造方法における後加熱工程と同様の方法で行えばよい。
以下において、溶媒が示されていないものは水を使用した。
以下において、「水」としては、超純水(Millipore社製Milli-Q水、抵抗18MΩ・cm(25℃)以下)を使用した。
なお、化合物(A)の溶液、架橋剤(B)の溶液、架橋剤(B)に塩基(C-2)を加えた溶液、その他の溶液をそれぞれ混合するときは、混合する各溶液に沈殿物がないことを確認してから混合した。
化合物(A)として、3-アミノプロピルジエトキシメチルシラン(3APDES;(3-Aminopropyl)diethoxymethylsilane)4.0gを準備し、これを1-プロパノール(1PrOH)56.0gに加え、更に8.8質量%ギ酸(FA)水溶液20.0gを加え、3APDESが5質量%となるように溶解後、室温で一時間撹拌後、60℃ウォーターバス中で1時間加温を行い、化合物(A)を含む溶液を得た。この溶液中で3APDESは加水分解物として存在する。3APDESの加水分解物は、Siに、非架橋性基であるメチル基が1つ、架橋性基である水酸基が2つ、架橋性基であるアミノプロピル基が1つ結合している。すなわち、(非架橋性基)/Siが1である。
次いで、表1に示す濃度となるように、化合物(A)を含む溶液と架橋剤(B)を含む溶液とを混合し、化合物(A)、架橋剤(B)及び酸(C-1)を含む溶液1を調製した。
1PrheTMA[1.03]におけるカッコ内の数値は、化合物(A)である3APDES中の全窒素原子の数に対する、架橋剤(B)である1PrheTMA中のカルボキシ基の数の比率(COOH/N)を表している。
FAのカッコ内の数値である1.83は、化合物(A)である3APDES中の全窒素原子の数に対する酸(C-1)であるFA中のカルボキシ基の数の比率(COOH/N)を表している。
1PrOH(86.6質量%)におけるカッコ内の濃度は、化合物(A)及び架橋剤(B)を含む溶液中における1PrOHの濃度を表している。
実施例1で調製した溶液1を2.0g準備し、これを1PrOH 12.0gに加えて、更に水を6.0g加え、化合物(A)、架橋剤(B)及び酸(C-1)を含む溶液2を調製した。
1PrheTMA[1.03]におけるカッコ内の数値は、化合物(A)である3APDES中の全窒素原子の数に対する、架橋剤(B)である1PrheTMA中のカルボキシ基の数の比率(COOH/N)を表している。
FAのカッコ内の数値である1.83は、化合物(A)である3APDES中の全窒素原子の数に対する酸(C-1)であるFA中のカルボキシ基の数の比率(COOH/N)を表している。
1PrOH(68.6質量%)におけるカッコ内の濃度は、化合物(A)及び架橋剤(B)を含む溶液中における1PrOHの濃度を表している。
化合物(A)として、分岐ポリエチレンイミン(BPEI)である、BASF社製ポリエチレンイミン(Mw=70,000、1級窒素原子/2級窒素原子/3級窒素原子=31/40/29)を準備した。
次いで、表1に示す濃度となるように、化合物(A)を含む溶液と架橋剤(B)を含む溶液とを混合し、化合物(A)及び架橋剤(B)を含む溶液3を調製した。
TMA[1.5]におけるカッコ内の数値は、化合物(A)であるBPEI中の全窒素原子の数に対する、架橋剤(B)であるTMA中のカルボキシ基の数の比率(COOH/N)を表している。
NH3のカッコ内の数値である1.5は、架橋剤(B)であるTMA中のカルボキシ基の数に対する塩基(C-2)であるNH3中の全窒素の数の比率(N/COOH)を表している。
実施例4~実施例11では、表1に記載の成分及び添加量に変更した以外は実施例1と同様にして溶液4~溶液8をそれぞれ調製した。
なお表1中では、化合物(A)である3APDES、3APTES及びBPEIにおけるカッコ内の濃度は、化合物(A)及び架橋剤(B)を含む溶液中における3APDES、3APTES及びBPEIの濃度をそれぞれ表している。
架橋剤(B)である1PrheTMA、TMA、ehePMA、PMA及びTMSAにおけるカッコ内の数値は、化合物(A)中の全窒素原子の数に対する、架橋剤(B)中のカルボキシ基の数の比率(COOH/N)を表している。
FAのカッコ内の数値は、化合物(A)中の全窒素原子の数に対する酸(C-1)であるFA中のカルボキシ基の数の比率(COOH/N)を表している。
NH3のカッコ内の数値は、架橋剤(B)中のカルボキシ基の数に対する塩基(C-2)であるNH3中の全窒素の数の比率(N/COOH)を表している。
1PrOH及びEtOHにおけるカッコ内の濃度は、化合物(A)及び架橋剤(B)を含む溶液中における1PrOH及びEtOHの濃度をそれぞれ表している。
<化合物(A)>
3APDES:3-アミノプロピルジエトキシメチルシラン(溶液中では、加水分解されている)
3APTES:3-アミノプロピルトリエトキシシラン(溶液中では、加水分解されている)
BPEI:分岐ポリエチレンイミン
<架橋剤(B)>
1PrheTMA:1-プロピルハーフエステルトリメリット酸
TMA:トリメリット酸
ehePMA:エチルハーフエステルピロメリット酸
PMA:ピロメリット酸
TMSA:1,3,5-ベンゼントリカルボン酸
<酸(C-1)>
FA:ギ酸
<塩基(C-2)>
NH3:アンモニア
<極性溶媒(D)>
1PrOH:1-プロパノール
EtOH:エタノール
比較例1~比較例5では、表2に記載の成分及び添加量に変更した以外は実施例1と同様にして溶液9~溶液13をそれぞれ調製した。
なお、比較例1では、ビフェニルテトラカルボン酸二無水物(BPDA)とパラフェニレンジアミン(pDA)とをN-メチル-2-ピロリドン(NMP)溶媒(97.5質量%)中で反応させることにより、BPDAとpDAとからなるポリアミック酸(2.5質量%)を含む溶液9を調製した。
比較例2では、パラキシレンジアミン(pXDA)を、水と1-プロパノール(1PrOH)との混合溶媒に溶解した後、一晩静置し、pXDA溶液1を得た。1,3,5-ベンゼントリカルボン酸(TMSA)に、アンモニア(NH3)と水とを混合させて、TMSAとNH3との混合溶液1とした。次いで、pXDA溶液1、TMSAとNH3との混合溶液1、及び水を表2に示す濃度となるように混合して、溶液10を調製した。
比較例3及び比較例4では、カッコ内の濃度となるようにBPEI及び3APDESを水に混合し、かつBPEI及び3APDES中の全窒素原子に対するマロン酸(MA)のカルボキシ基の数の比率(COOH/N)がカッコ内の数値である1.0となるようにMAを溶液に混合して、溶液11及び溶液12をそれぞれ調製した。
比較例5では、THE JOURNAL OF PHYSICAL CHEMISTRY C誌、2011年、115号、頁12981-12989のA2**法に従い、テトラエトキシシラン(TEOS)の加水分解物、及びシロキサン重合体を含むエタノール、水及び硝酸の混合溶液を得た後、カッコ内の数字となるように水、エタノール及び1-プロパノールを加えて、溶液13を調製した。
1PrOH、EtOH及び硝酸におけるカッコ内の濃度は、溶液中における1PrOH、EtOH及び硝酸の濃度をそれぞれ表している。
上記で得た化合物(A)及び架橋剤(B)を含む溶液を塗布する基板として4インチφシリコン基板(シリコンウェハ)を準備した。シリコン基板をUV(紫外線)オゾンで5分間処理した後、シリコン基板をスピンコーターの上にのせ、各実施例及び各比較例で調製した組成物2.0mLを10秒間一定速度で滴下し、13秒間保持した後、2000rpm(rpmは回転速度)で1秒間、600rpmで30秒間回転させた後、2000rpmで10秒間回転させて乾燥させた。これにより。シリコン基板上に接着層を形成した。
次いで、前述の加熱工程(低温加熱工程)として、125℃で1分間、接着層を加熱乾燥させた。
接着層の厚さを、エリプソメーター(SEMILAB社製光学式ポロシメータ(PS-1100))を使用して測定した。厚さが10nm以上のときは、空気/(コーシー+ローレンツ振動子モデル)/自然酸化膜/シリコン基板の光学モデルでフィッティングした。厚さが10nm未満のときは、空気/SiO2/自然酸化膜/シリコン基板の光学モデルでフィッティングした。結果を表1及び表2に示す。
接着層の架橋構造をFT-IR(フーリエ変換赤外分光法)で測定した。用いた分析装置は以下のとおりである。
~FT-IR分析装置~
赤外吸収分析装置(DIGILAB Excalibur(DIGILAB社製))
~測定条件~
IR光源:空冷セラミック、
ビームスプリッター:ワイドレンジKBr、
検出器:ペルチェ冷却DTGS、
測定波数範囲:7500cm-1~400cm-1、
分解能:4cm-1、
積算回数:256、
バックグラウンド:Siベアウェハ使用、
測定雰囲気:N2(10L/min)、
IR(赤外線)の入射角:72°(=Siのブリュースター角)
~判断条件~
イミド結合は1770cm-1、1720cm-1の振動ピークの存在で判断した。アミド結合は1650cm-1、1550cm-1の振動ピークの存在で判断した。シロキサン結合は、1000~1100cm-1の振動ピークの存在で判断した。
結果を表1及び表2に示す。なお、250℃で1時間、窒素雰囲気下で加熱後のサンプルをFT-IR測定に用いた。
―SPM形態観察―
接着層の表面の平滑性をSPMによる形態観察で評価した。走査型プローブ顕微鏡(SPM)であるSPA400(日立ハイテクノロジーズ製)を用い、ダイナミックフォースマイクロスコープモードにて、3ミクロン×3ミクロン角領域で測定を行った。SPMにて測定された自乗平均面粗さ(RMS)が0.5nm以下である場合には「平滑性あり」と判断した。
結果を表1及び表2に示す。なお、400℃で10分間加熱した後の膜をSPM形態観察の対象とした。
接着層の表面を肉眼で確認し、干渉縞等の斑、パーティクル(接着層中の成分の凝集物)、又ははじき(接着層が部分的に形成されない部分)のいずれかが確認されたものをウェハ内で均一性のないC評価とした。C評価以外の各接着層について、エリプソメーター(SEMILAB社製光学式ポロシメータ(PS-1100))で膜厚分布測定を行った。具体的には組成物が成膜された4インチφシリコンウェハ(接合前)を1cm×1cm角にカットして、1cm毎のウェハ内膜厚を測定した。最大膜厚と最小膜厚の差が平均膜厚の10%以下であるサンプルはウェハ内膜厚均一性に優れているとしてA評価とした。
結果を表1及び表2に示す。
〔実施例1~実施例3、及び比較例1~比較例4〕
接着層が形成されたシリコンウェハ(第1の基板)上に、UVオゾンで5分間処理した4インチφシリコンベアウェハ(第2の基板)を貼り付けた。これは前述の第6工程に相当する。次いで、プレス装置で250℃、1時間(60分)、1MPaで熱圧着を行い、基板積層体を得た。これは前述の加熱工程に相当する。
〔実施例4〕
接着層が形成されたシリコンウェハ(第1の基板)を窒素雰囲気下、400℃で10分間加熱した。次いで、接着層が形成されたシリコンウェハ(第1の基板)上に、UVオゾンで5分間処理した4インチφシリコンベアウェハ(第2の基板)を貼り付けた。そして、プレス装置で250℃、1時間(60分間)、1MPaで熱圧着を行い、基板積層体を得た。
〔実施例5及び実施例7~実施例11〕
接着層が形成されたシリコンウェハ(第1の基板)を窒素雰囲気下、400℃で10分間加熱した。次いで、接着層が形成されたシリコンウェハ(第1の基板)上に、UVオゾンで5分間処理した4インチφシリコンベアウェハ(第2の基板)を貼り付けた。そして、プレス装置で23℃、1分間、1MPaで圧着を行い、基板積層体を得た。これは前述の加圧工程に相当する。
〔実施例6及び比較例5〕
接着層が形成されたシリコンウェハ(第1の基板)を窒素雰囲気下、400℃で10分間加熱した。次いで、接着層が形成されたシリコンウェハ(第1の基板)上に、UVオゾンで5分間処理した4インチφシリコンベアウェハ(第2の基板)を貼り付けた。そして、プレス装置で23℃、1分間、1MPaで圧着を行った。次いで、窒素雰囲気下、400℃で30分間加熱して、基板積層体を得た。
前記基板積層体をダイサー(ディスコ社製、DAD3240)を用いて、1cm×1cm角にカットした。
続いてカットされた積層体の上下両面に7mmφのエポキシ樹脂付き金属ピンを接着し(室温でエポキシ硬化)、引張接合強度測定用サンプルを形成した。
前記引張接合強度測定用サンプルを用いて、引っ張り試験機で降伏点の測定を行った。降伏点より求められた引張接合強度を表1及び表2に示す。
前記基板積層体を、ダイサー(ディスコ社製、DAD3240)を用いて7mm×7mm角にカットしてアウトガス測定用サンプルを作製した。アウトガス測定用サンプルを用いて、ESCO社製 EMD-WA1000Sで加熱によるアウトガス量測定を行った。雰囲気圧力(ベースプレッシャー)は10-7Pa、昇温速度は30℃/minである。シリコン基板の表面温度としては、標準資料(H+注入シリコン、CaC2O4滴下Ar+注入シリコンウェハ)のアウトガスピークを用いてステージ下熱電対の温度校正を行った物を用いた。
昇温していき、アウトガスの圧力が2×10-6Paとなった温度を求めた。結果を表1及び表2に示す。前記温度が高いほど、アウトガスが発生しにくいことを意味する。
前記基板積層体を、ズースマイクロテック社製 IR200のIRランプ上ステージに設置した。次いで、ステージの上に設置されたIRカメラにより、第2の基板越しにボイドの観察を行った。ボイドの面積の合計を、透過光を観測できた面積の合計で除して、ボイド面積率を算出した。ボイド面積率が30%以下の場合を良好とし、30%超の場合を不良とした。
結果を表1及び表2に示す。
また、ボイドの評価を行った実施例4~11では、ボイドの評価を行った比較例2、比較例4及び比較例5と比較してボイドが抑制されていた。
また、アウトガスの評価を行った実施例1及び実施例5~11では、アウトガスの評価を行った比較例2及び比較例5と比較してアウトガスの圧力が2×10-6Paとなった温度が高く、アウトガスの発生が抑制されていた。
以上により、各実施例の基板積層体では、各比較例の基板積層体と比較して意図せぬ剥離が生じにくいことが推測される。
本明細書に記載された全ての文献、特許出願、及び技術規格は、個々の文献、特許出願、及び技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書中に参照により取り込まれる。
Claims (19)
- 第1の基板、
1級窒素原子及び2級窒素原子の少なくとも1つを含むカチオン性官能基を有し、重量平均分子量が90以上40万以下である化合物(A)と、分子内に-C(=O)OX基(Xは、水素原子又は炭素数1以上6以下のアルキル基である)を3つ以上有し、3つ以上の-C(=O)OX基のうち、1つ以上6つ以下が-C(=O)OH基であり、重量平均分子量が200以上600以下である架橋剤(B)との反応物を含む接着層、並びに
第2の基板、
が順に積層され、
前記化合物(A)は、重量平均分子量1万以上40万以下の脂肪族アミン、及びシロキサン結合(Si-O結合)とアミノ基とを有する重量平均分子量130以上10000以下の化合物からなる群より選ばれる少なくとも1種を含む、基板積層体。 - 前記接着層の厚さは、0.1nm~5000nmである、請求項1に記載の基板積層体。
- 引張接合強度が5MPa以上である、請求項1又は請求項2に記載の基板積層体。
- 前記架橋剤(B)は、分子内に環構造を有する、請求項1~請求項3のいずれか1項に記載の基板積層体。
- 前記架橋剤(B)における前記環構造は、2つ以上の-C(=O)OX基を有する環構造である、請求項4に記載の基板積層体。
- 前記環構造は、ベンゼン環及びナフタレン環の少なくとも一方である、請求項4又は請求項5に記載の基板積層体。
- 前記架橋剤(B)は、前記3つ以上の-C(=O)OX基において、少なくとも1つのXが炭素数1以上6以下のアルキル基である、請求項1~請求項6のいずれか1項に記載の基板積層体。
- 前記シロキサン結合(Si-O結合)とアミノ基とを有する重量平均分子量130以上10000以下の化合物は、Si元素と、Si元素に結合する非架橋性基とのモル比が、(非架橋性基)/Si<2の関係を満たす、請求項1~請求項7のいずれか1項に記載の基板積層体。
- 前記反応物は、アミド結合及びイミド結合の少なくとも一方を有する、請求項1~請求項8のいずれか1項に記載の基板積層体。
- 減圧下におけるアウトガスの圧力が2×10-6Paになる温度が400℃以上である、請求項1~請求項9のいずれか1項に記載の基板積層体。
- 前記第1の基板及び前記第2の基板の少なくとも一方は、前記接着層側の面に電極を備える、請求項1~請求項10のいずれか1項に記載の基板積層体。
- 前記第1の基板及び前記第2の基板の少なくとも一方は、Si、Al、Ti、Zr、Hf、Fe、Ni、Cu、Ag、Au、Ga、Ge、Sn、Pd、As、Pt、Mg、In、Ta及びNbからなる群から選ばれる少なくとも1種の元素を含む、請求項1~請求項11のいずれか1項に記載の基板積層体。
- 前記第1の基板及び前記第2の基板の少なくとも一方は、Si、Ga、Ge及びAsからなる群から選ばれる少なくとも1種の元素を含む半導体基板である、請求項12に記載の基板積層体。
- 第1の基板と、
接着層と、
第2の基板と、がこの順で積層され、
前記接着層の厚さが0.1nm~5000nmであり、
引張接合強度が5MPa以上である基板積層体。 - 第1の基板上に、1級窒素原子及び2級窒素原子の少なくとも1つを含むカチオン性官能基を有し、重量平均分子量が90以上40万以下である化合物(A)を含む膜を形成する第1工程と、
前記膜上に、分子内に-C(=O)OX基(Xは、水素原子又は炭素数1以上6以下のアルキル基である)を3つ以上有し、3つ以上の-C(=O)OX基のうち、1つ以上6つ以下が-C(=O)OH基であり、重量平均分子量が200以上600以下である架橋剤(B)を付与する第2工程と、
前記化合物(A)と前記架橋剤(B)とを含む膜が形成された面に第2の基板を積層する第3工程と、
前記化合物(A)と前記架橋剤(B)とを含む膜を、70℃~450℃に加熱し、前記化合物(A)と前記架橋剤(B)との反応物を含む接着層を形成する加熱工程と、
を有し、
前記化合物(A)は、重量平均分子量1万以上40万以下の脂肪族アミン、及びシロキサン結合(Si-O結合)とアミノ基とを有する重量平均分子量130以上10000以下の化合物からなる群より選ばれる少なくとも1種を含む、基板積層体の製造方法。 - 第1の基板上に、1級窒素原子及び2級窒素原子の少なくとも1つを含むカチオン性官能基を有し、重量平均分子量が90以上40万以下である化合物(A)と、分子内に-C(=O)OX基(Xは、水素原子又は炭素数1以上6以下のアルキル基である)を3つ以上有し、3つ以上の-C(=O)OX基のうち、1つ以上6つ以下が-C(=O)OH基であり、重量平均分子量が200以上600以下である架橋剤(B)とを含む膜を形成する第5工程と、
前記化合物(A)と前記架橋剤(B)とを含む膜が形成された面に第2の基板を積層する第6工程と、
前記化合物(A)と前記架橋剤(B)とを含む膜を、70℃~450℃に加熱し、前記化合物(A)と前記架橋剤(B)との反応物を含む接着層を形成する加熱工程と、
を有し、
前記化合物(A)は、重量平均分子量1万以上40万以下の脂肪族アミン、及びシロキサン結合(Si-O結合)とアミノ基とを有する重量平均分子量130以上10000以下の化合物からなる群より選ばれる少なくとも1種を含む、基板積層体の製造方法。 - 前記第1の基板又は前記第2の基板の、前記化合物(A)と前記架橋剤(B)とを含む膜が形成される側の面が、水酸基、エポキシ基、カルボキシ基、アミノ基、及びメルカプト基からなる群より選ばれる少なくとも1種を有する、請求項15又は請求項16に記載の基板積層体の製造方法。
- 前記第1の基板及び前記第2の基板の少なくとも一方は、Si、Al、Ti、Zr、Hf、Fe、Ni、Cu、Ag、Au、Ga、Ge、Sn、Pd、As、Pt、Mg、In、Ta、及びNbからなる群から選ばれる少なくとも1種の元素を含み、
前記水酸基、エポキシ基、カルボキシ基、アミノ基及びメルカプト基からなる群より選ばれる少なくとも1種は、前記少なくとも1種の元素と結合している、請求項17に記載の基板積層体の製造方法。 - 前記第1の基板又は前記第2の基板の、前記化合物(A)と前記架橋剤(B)とを含む膜が形成される側の面が、シラノール基(Si-OH基)を有する、請求項18に記載の基板積層体の製造方法。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023500279A (ja) * | 2019-10-31 | 2023-01-05 | コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ | 2つの親水性表面を結合する方法 |
| WO2024172044A1 (ja) * | 2023-02-13 | 2024-08-22 | 三井化学株式会社 | 基板積層体の製造方法、積層体、及び基板積層体 |
| WO2025023139A1 (ja) * | 2023-07-21 | 2025-01-30 | 三井化学株式会社 | 積層体及び積層体の製造方法 |
| WO2025115877A1 (ja) * | 2023-11-30 | 2025-06-05 | 三井化学株式会社 | 接着剤用組成物及び積層体 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230275057A1 (en) * | 2020-09-10 | 2023-08-31 | Mitsui Chemicals, Inc. | Composition, multilayer body and method for producing multilayer body |
| KR20220170405A (ko) * | 2021-06-22 | 2022-12-30 | 삼성전자주식회사 | 기판 건조 장치, 이를 포함하는 기판 처리 장치 및 이를 이용한 기판 처리 방법 |
| WO2023032924A1 (ja) * | 2021-09-06 | 2023-03-09 | 三井化学株式会社 | 半導体用の膜を形成するための組成物、積層体及び基板積層体 |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4933120B1 (ja) | 1968-06-21 | 1974-09-04 | ||
| JPH04132258A (ja) | 1990-09-25 | 1992-05-06 | Nec Corp | 半導体基板の接続体およびその接続方法 |
| JPH0616809A (ja) | 1991-09-21 | 1994-01-25 | Hoechst Ag | アルキル化ポリエチレンイミン誘導体およびその製造方法 |
| JPH08259895A (ja) * | 1995-03-28 | 1996-10-08 | Toray Ind Inc | 熱硬化性組成物、その製造方法およびカラーフィルタ |
| JP2001213958A (ja) | 2000-02-03 | 2001-08-07 | Nippon Shokubai Co Ltd | エチレンイミン重合体およびその製造方法 |
| WO2001076866A1 (en) * | 2000-04-12 | 2001-10-18 | Kaneka Corporation | Laminate and multilayer printed board manufactured by using the same |
| JP2003525996A (ja) * | 2000-03-03 | 2003-09-02 | ダウ・コーニング・コーポレイション | ポリ酸を用いたバリアコーティング |
| JP2010226060A (ja) | 2009-03-25 | 2010-10-07 | Fujitsu Ltd | 半導体装置とその製造方法 |
| WO2010137711A1 (ja) | 2009-05-29 | 2010-12-02 | 三井化学株式会社 | 半導体用シール組成物、半導体装置および半導体装置の製造方法 |
| WO2016024457A1 (ja) * | 2014-08-12 | 2016-02-18 | 株式会社カネカ | アルコキシシラン変性ポリアミド酸溶液、それを用いた積層体及びフレキシブルデバイス、並びに積層体の製造方法 |
| JP2016047895A (ja) | 2014-08-28 | 2016-04-07 | 株式会社ダイセル | 半導体用接着剤組成物 |
| JP2017090591A (ja) | 2015-11-06 | 2017-05-25 | 浜松ホトニクス株式会社 | 画像取得装置、画像取得方法、及び空間光変調ユニット |
| WO2017086361A1 (ja) * | 2015-11-16 | 2017-05-26 | 三井化学株式会社 | 半導体用膜組成物、半導体用膜組成物の製造方法、半導体用部材の製造方法、半導体用工程材の製造方法及び半導体装置 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0637609B2 (ja) * | 1986-01-24 | 1994-05-18 | マサチユ−セツツ インスチチユ−ト オブ テクノロジ− | 接着促進剤 |
| TW502135B (en) * | 1996-05-13 | 2002-09-11 | Sumitomo Bakelite Co | Positive type photosensitive resin composition and process for preparing polybenzoxazole resin film by using the same |
| EP1739114B1 (en) * | 2004-05-20 | 2008-12-17 | Toray Industries, Inc. | Polyimide resin, multilayer film, multilayer film with metal layer, and semiconductor device |
| CN101484513B (zh) | 2006-07-04 | 2013-05-29 | 新日铁化学株式会社 | 聚酰亚胺树脂层的表面改性方法以及覆金属层合板的制造方法 |
| JP2008056897A (ja) * | 2006-08-03 | 2008-03-13 | Nippon Shokubai Co Ltd | ポリアミド酸組成物およびその応用 |
| KR20100009262A (ko) * | 2008-07-18 | 2010-01-27 | 일진소재산업주식회사 | 실란계 화합물, 그 제조 방법 및 이를 포함하는 동박용표면처리제 조성물 |
| CN103534012A (zh) * | 2011-04-08 | 2014-01-22 | 道康宁公司 | 使用环氧官能硅氧烷制备气体选择性膜的方法 |
| WO2014196636A1 (ja) * | 2013-06-07 | 2014-12-11 | アドバンスト・ソフトマテリアルズ株式会社 | ポリロタキサン、並びにオキシラン基及び/又はオキセタン基を2以上有する化合物を有する架橋用組成物 |
| US10950532B2 (en) | 2014-12-17 | 2021-03-16 | Mitsui Chemicals, Inc. | Substrate intermediary body, through-hole via electrode substrate, and through-hole via electrode formation method |
-
2018
- 2018-04-24 WO PCT/JP2018/016681 patent/WO2018199117A1/ja not_active Ceased
- 2018-04-24 CN CN201880027357.5A patent/CN110545997B/zh active Active
- 2018-04-24 KR KR1020197032515A patent/KR102310660B1/ko active Active
- 2018-04-24 EP EP18791297.7A patent/EP3616903B1/en active Active
- 2018-04-24 US US16/607,898 patent/US11859110B2/en active Active
- 2018-04-24 JP JP2019514550A patent/JP6781827B2/ja active Active
- 2018-04-25 TW TW107113998A patent/TWI804494B/zh active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4933120B1 (ja) | 1968-06-21 | 1974-09-04 | ||
| JPH04132258A (ja) | 1990-09-25 | 1992-05-06 | Nec Corp | 半導体基板の接続体およびその接続方法 |
| JPH0616809A (ja) | 1991-09-21 | 1994-01-25 | Hoechst Ag | アルキル化ポリエチレンイミン誘導体およびその製造方法 |
| JPH08259895A (ja) * | 1995-03-28 | 1996-10-08 | Toray Ind Inc | 熱硬化性組成物、その製造方法およびカラーフィルタ |
| JP2001213958A (ja) | 2000-02-03 | 2001-08-07 | Nippon Shokubai Co Ltd | エチレンイミン重合体およびその製造方法 |
| JP2003525996A (ja) * | 2000-03-03 | 2003-09-02 | ダウ・コーニング・コーポレイション | ポリ酸を用いたバリアコーティング |
| WO2001076866A1 (en) * | 2000-04-12 | 2001-10-18 | Kaneka Corporation | Laminate and multilayer printed board manufactured by using the same |
| JP2010226060A (ja) | 2009-03-25 | 2010-10-07 | Fujitsu Ltd | 半導体装置とその製造方法 |
| WO2010137711A1 (ja) | 2009-05-29 | 2010-12-02 | 三井化学株式会社 | 半導体用シール組成物、半導体装置および半導体装置の製造方法 |
| WO2016024457A1 (ja) * | 2014-08-12 | 2016-02-18 | 株式会社カネカ | アルコキシシラン変性ポリアミド酸溶液、それを用いた積層体及びフレキシブルデバイス、並びに積層体の製造方法 |
| JP2016047895A (ja) | 2014-08-28 | 2016-04-07 | 株式会社ダイセル | 半導体用接着剤組成物 |
| JP2017090591A (ja) | 2015-11-06 | 2017-05-25 | 浜松ホトニクス株式会社 | 画像取得装置、画像取得方法、及び空間光変調ユニット |
| WO2017086361A1 (ja) * | 2015-11-16 | 2017-05-26 | 三井化学株式会社 | 半導体用膜組成物、半導体用膜組成物の製造方法、半導体用部材の製造方法、半導体用工程材の製造方法及び半導体装置 |
Non-Patent Citations (3)
| Title |
|---|
| A. BAYRASHEVB. ZIAIE, SENSORS AND ACTUATORS A, vol. 103, 2003, pages 16 - 22 |
| Q. Y. TONGU. M. GOSELE, ADVANCED MATERIAL, vol. 11, no. 17, 1999, pages 1409 - 1425 |
| THE JOURNAL OF PHYSICAL CHEMISTRY C, vol. 115, 2011, pages 12981 - 12989 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023500279A (ja) * | 2019-10-31 | 2023-01-05 | コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ | 2つの親水性表面を結合する方法 |
| JP7635227B2 (ja) | 2019-10-31 | 2025-02-25 | コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ | 2つの親水性表面を結合する方法 |
| WO2024172044A1 (ja) * | 2023-02-13 | 2024-08-22 | 三井化学株式会社 | 基板積層体の製造方法、積層体、及び基板積層体 |
| WO2025023139A1 (ja) * | 2023-07-21 | 2025-01-30 | 三井化学株式会社 | 積層体及び積層体の製造方法 |
| WO2025115877A1 (ja) * | 2023-11-30 | 2025-06-05 | 三井化学株式会社 | 接着剤用組成物及び積層体 |
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| Publication number | Publication date |
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| EP3616903A4 (en) | 2021-01-06 |
| CN110545997B (zh) | 2022-05-24 |
| JPWO2018199117A1 (ja) | 2019-11-07 |
| US20200048515A1 (en) | 2020-02-13 |
| US11859110B2 (en) | 2024-01-02 |
| EP3616903C0 (en) | 2023-09-27 |
| EP3616903B1 (en) | 2023-09-27 |
| EP3616903A1 (en) | 2020-03-04 |
| JP6781827B2 (ja) | 2020-11-04 |
| TW201838810A (zh) | 2018-11-01 |
| KR102310660B1 (ko) | 2021-10-07 |
| KR20190136059A (ko) | 2019-12-09 |
| CN110545997A (zh) | 2019-12-06 |
| TWI804494B (zh) | 2023-06-11 |
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