WO2021112627A1 - 반도체 패키지용 언더필 필름 및 이를 이용하는 반도체 패키지의 제조방법 - Google Patents
반도체 패키지용 언더필 필름 및 이를 이용하는 반도체 패키지의 제조방법 Download PDFInfo
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- WO2021112627A1 WO2021112627A1 PCT/KR2020/017668 KR2020017668W WO2021112627A1 WO 2021112627 A1 WO2021112627 A1 WO 2021112627A1 KR 2020017668 W KR2020017668 W KR 2020017668W WO 2021112627 A1 WO2021112627 A1 WO 2021112627A1
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- adhesive layer
- semiconductor package
- epoxy resin
- semiconductor chip
- package
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- H—ELECTRICITY
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- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/482—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of lead-in layers inseparably applied to the semiconductor body (electrodes)
- H01L23/4827—Materials
- H01L23/4828—Conductive organic material or pastes, e.g. conductive adhesives, inks
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/35—Heat-activated
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
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- C08G59/686—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing nitrogen
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Definitions
- the present invention relates to an underfill film for a semiconductor package and a method for manufacturing a semiconductor package using the same, and more particularly, to an underfill film for a semiconductor package capable of improving the reliability of the package by minimizing the occurrence of voids during the manufacture of the semiconductor package, and the same It relates to a method of manufacturing a semiconductor package to be used.
- an underfill is disposed in a space between a semiconductor chip and a package substrate.
- the underfill not only protects the package structure from external influences such as mechanical shock and corrosion of the joint, but also improves the reliability of the package product by minimizing the stress caused by the difference in the coefficient of thermal expansion between the chip and the substrate.
- the underfill was formed by performing a solder reflow process, then filling the space between the semiconductor chip and the package substrate with a liquid underfill resin using equipment such as a needle and then curing it.
- the underfill resin in the filling process of the liquid underfill resin, the underfill resin must be uniformly provided to the entire area of the empty space between the semiconductor chip and the package substrate. Therefore, not only a needle movement space for moving the needle along the side surface of the semiconductor chip in a certain trajectory must be secured, but also a free space for arranging the needle must be secured. For this reason, space consumption occurs, which becomes an obstacle to miniaturization of products using flip chips.
- Another object of the present invention is to provide a method of manufacturing a semiconductor package having excellent connection reliability while simplifying a bonding process and improving production efficiency using the above-described underfill film.
- the present invention is a substrate; and an adhesive layer disposed on one surface of the substrate and having a minimum melt viscosity at 160 to 170° C. of 3000 Pa.s or less.
- the present invention includes the steps of pressing the adhesive layer of the underfill film on the bumps of the semiconductor chip provided with the bumps; aligning the bumps of the semiconductor chip on which the adhesive layer is pressed on the bonding pads of the package substrate having bonding pads in regions corresponding to the bump positions; connecting the semiconductor chip and the package substrate by melting the bump of the semiconductor chip; and curing the adhesive layer disposed between the connected semiconductor chip and the package substrate.
- the present invention may include an adhesive layer having a low melt viscosity, thereby simplifying a bonding process during semiconductor packaging, and minimizing void generation to improve package connection reliability.
- FIG. 1 is a cross-sectional view schematically illustrating an underfill film for a semiconductor package according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view schematically illustrating an underfill film for a semiconductor package according to a second embodiment of the present invention.
- 3 to 6 are cross-sectional views for each process for schematically explaining a method of manufacturing a semiconductor package according to the present invention.
- FIG. 1 is a cross-sectional view schematically showing an underfill film for a semiconductor package according to a first embodiment of the present invention
- FIG. 2 is a cross-sectional view schematically showing an underfill film for a semiconductor package according to a second embodiment of the present invention.
- the underfill films 10A and 10B according to the present invention are non-conductive adhesive films used to relieve stress applied to a connection portion between a bump of a semiconductor chip and a bonding pad of a package substrate during semiconductor packaging. As shown in FIG. 2 , it includes a substrate 11 and an adhesive layer 12 disposed on one surface of the substrate. Optionally, another substrate (hereinafter, 'second substrate') 13 disposed on the other surface of the adhesive layer may be further included (see FIG. 2 ).
- the substrate 11 is a portion that protects the surface of the adhesive layer while supporting the adhesive layer, and is peeled off and removed when the underfill film is used.
- any plastic film commonly known in the art may be used without limitation, as long as it can be peeled off, and a release paper may also be used.
- Non-limiting examples of plastic films that can be used include polyester films such as polyethylene terephthalate (PET), polybutylene terephthalate, and polyethylene naphthalate, polyethylene films, polypropylene films, cellophane, diacetylcellulose films, triacetylcellulose films, and the like.
- PET polyethylene terephthalate
- polybutylene terephthalate polybutylene terephthalate
- polyethylene naphthalate polyethylene films
- polypropylene films polypropylene films
- cellophane diacetylcellulose films
- triacetylcellulose films triacetylcellulose films
- the substrate 11 may be polyethylene terephthalate (PET). According to another example, the substrate 11 may be polyimide (PI).
- a release layer may be disposed on the plastic film.
- the release layer can easily separate the substrate from the adhesive layer while maintaining the shape without damage to the adhesive layer.
- the release layer may be a generally used film-type release material.
- the component of the release agent used in the release layer is not particularly limited, and a conventional release agent component known in the art may be used. Non-limiting examples thereof include an epoxy-based release agent, a release agent made of a fluororesin, a silicone-based release agent, an alkyd resin-based release agent, and a water-soluble polymer.
- a component of the release layer may include a powdery filler such as silicon, silica, and the like. At this time, the powder filler in the form of fine particles may be mixed with two types of powder fillers, and in this case, their average particle size may be appropriately selected in consideration of the surface roughness to be formed.
- the thickness of the release layer may be appropriately adjusted within a conventional range known in the art.
- the thickness of the substrate 11 is not particularly limited, and can be adjusted within a conventional range known in the art, for example, about 25 to 150 ⁇ m, specifically about 30 to 100 ⁇ m, More specifically, it may be about 30 to 50 ⁇ m.
- the release force of such a substrate is not particularly limited, and may be, for example, about 1 to 500 gf/inch, and specifically about 10 to 100 gf/inch.
- the method for forming the release layer is not particularly limited, and known methods such as hot press, hot roll lamination, extrusion lamination, application of a coating liquid, and drying can be employed.
- the adhesive layer 12 is disposed on one surface of the substrate 11 , and when aligning the semiconductor chip to the package substrate in semiconductor packaging, the semiconductor chip can be adhered to the package substrate, and the underfill As an underfill, it is possible to redistribute stress and strain caused by the difference in thermal expansion coefficient between the semiconductor chip and the package substrate.
- the adhesive layer 12 of the present invention in a semi-cured state, has a lowest melt viscosity of about 3000 Pa.s or less at about 160 to 170°C.
- the adhesive layer 12 is placed between the semiconductor chip with bumps and the package substrate with bonding pads, and when they are pressed under the conditions of about 200 ° C, about 30 to 100 N, and about 1 to 3 seconds, the adhesive layer is It has a void area ratio of 1% or less per 1 mm2.
- the adhesive layer 12 of the present invention has a lowest melt viscosity as low as about 3000 Pa.s or less, preferably about 100 to 1000 Pa.s at about 160 to 170° C., about 200° C., 50 N, about 1 It melts easily even by pressing under the condition of ⁇ 3 seconds and has fluidity. Accordingly, when the bump of the semiconductor chip is temporarily bonded to the bonding pad of the package substrate, the adhesive layer 12 is positioned between the bump of the semiconductor chip and the bonding pad of the package substrate. The adhesive layer 12 may be melted during the temporary plate to fill an empty space between the bump and the bonding pad. In particular, since the adhesive layer has high fluidity, it can fill fine empty spaces with fine pitches.
- the adhesive layer of the present invention can serve not only as an underfill but also as a flux, there is no need to apply flux on the bonding pad and to wash the flux, unlike the prior art. . Therefore, voids due to flux residues or flux washing solvent residues do not occur. As such, the adhesive layer of the present invention is excellent in the filling (gap-filling) effect, it is possible to minimize the occurrence of voids.
- the void area ratio in the adhesive layer after compression under the conditions of about 200 ° C., about 30 to 100 N, and about 1 to 3 seconds is 1% or less per 1 m2, and the void area ratio in the adhesive layer is later in the reflow process. It can go as low as 0.5% or less when the bumps melt.
- the adhesive layer 12 has a high onset temperature in a differential scanning calorimeter (DSC) in the range of about 160 to 220 °C. Therefore, the adhesive layer has stable curing properties at high temperatures.
- the onset temperature refers to a temperature at which the slope of the DSC graph first increases due to heat during DSC measurement.
- the thickness of the adhesive layer is adjusted in consideration of the minimum melt viscosity of the adhesive layer.
- the thickness of the adhesive layer may be in the range of 80 to 120% of the gap between the semiconductor chip and the package substrate.
- the adhesive layer 12 is made of a semi-cured adhesive resin composition, and the adhesive resin composition includes (a) an epoxy resin containing a liquid epoxy resin, a phenoxy resin, and a polyfunctional epoxy resin; (b) an acid anhydride-based curing agent; (c) nitrogen (N)-containing heterocyclic compounds; and (d) a filler.
- the epoxy resin contains a liquid epoxy resin, a phenoxy resin, and a polyfunctional epoxy resin.
- the use ratio (mixing ratio) between the liquid epoxy resin, the phenoxy resin, and the polyfunctional epoxy resin may be 1:1 to 3:1 to 3 by weight.
- the adhesive layer of the present invention since the adhesive layer of the present invention has a low minimum melt viscosity of about 3000 Pa.s or less, not only excellent adhesion but also excellent filling effect, therefore, the connection reliability of the package can be secured.
- the liquid epoxy resin is an epoxy resin in a liquid state at 25 ⁇ 5° C., and is a thermosetting resin.
- a liquid epoxy resin can impart adhesiveness and curability to the adhesive resin composition, and can impart curing uniformity to the adhesive layer after curing.
- Non-limiting examples of the liquid epoxy resin usable in the present invention include liquid bisphenol A type epoxy resin, liquid bisphenol F type epoxy resin, liquid naphthalene type epoxy resin, liquid aminophenol type epoxy resin, liquid hydrogenated bisphenol type epoxy resin There are resins, liquid alicyclic epoxy resins, liquid alcohol ether epoxy resins, liquid cycloaliphatic epoxy resins, liquid fluorene type epoxy resins, liquid siloxane type epoxy resins, etc., among them, liquid bisphenol A type epoxy resin, liquid bisphenol F Type epoxy resins and liquid naphthalene type epoxy resins are suitable in terms of adhesion, curability, durability, and heat resistance. These may be used alone or two or more of them may be used in combination.
- liquid epoxy resin products include bisphenol F-type epoxy resin (product name: YDF8170) manufactured by New Nittetsu Chemicals, bisphenol A-type epoxy resin manufactured by DIC (product name: EXA-850CRP), and bisphenol F-type epoxy resin manufactured by New Nittetsu Chemicals (product name: YDF870GS), DIC naphthalene-type epoxy resin (product name: HP4032D), Mitsubishi Chemical aminophenol-type epoxy resin (grade: JER630, JER630LSD), Momentibu Performance Siloxane-based epoxy resin (product name: TSL9906), Shin Nittetsu Chemical 1, 4-cyclohexanedimethanol diglycidyl ether (product name: ZX1658GS) manufactured by Corporation, etc., but is not limited thereto.
- the phenoxy resin is a thermoplastic polymer containing an epoxy group at at least one terminal, and since the equivalent weight of the epoxy group in the molecule is very small compared to the molecular weight, it participates in curing but can impart fluidity at high temperatures. Because of the phenoxy resin, the adhesive layer of the present invention can be molded into a semi-cured (B-stage) film shape at room temperature (about 25 ⁇ 5° C.).
- the phenoxy resin usable in the present invention is not particularly limited as long as it is a polymer containing a phenoxy group in the polymer chain and an epoxy group at at least one terminal thereof.
- the phenoxy resin may be a compound represented by the following Chemical Formula 1, but is not limited thereto.
- a and b are each an integer from 1 to 4,
- a plurality of R 1 and a plurality of R 2 are the same as or different from each other, and each independently hydrogen, halogen, C 1 ⁇ C 10 alkyl group, C 3 ⁇ C 20 cycloalkyl group, C 5 ⁇ C 20 aryl group, and It is selected from the group consisting of a nitro group, and specifically, each independently selected from the group consisting of hydrogen, halogen, C 1 to C 5 alkyl group, C 3 to C 10 cycloalkyl group, C 5 to C 10 aryl group and nitro group, ;
- R 3 to R 8 are the same as or different from each other, and each independently represent hydrogen or a hydroxyl group, provided that at least one of R 3 to R 8 is a hydroxyl group;
- X 1 is a single bond, or a C 1 ⁇ C 10 alkylene group, specifically a single bond, or a C 1 ⁇ C 5 alkylene group,
- Y 1 and Y 2 are the same as or different from each other, and each independently represents hydrogen, a hydroxyl group or an epoxy group, provided that at least one of Y 1 and Y 2 is an epoxy group
- n is an integer from 30 to 400).
- the polyfunctional epoxy resin usable in the present invention is an epoxy resin containing two or more epoxy groups. Such a polyfunctional epoxy resin imparts electrical insulation, heat resistance, chemical stability, toughness, and moldability to the adhesive layer.
- the polyfunctional epoxy resin usable in the present invention is not particularly limited as long as it is an epoxy resin containing two or more, specifically, two to five epoxy groups per molecule (monomer).
- Non-limiting examples of the polyfunctional epoxy resin include an epoxy resin obtained by epoxidizing a condensate of phenol or alkyl phenols with hydroxybenzaldehyde, a phenol novolak type epoxy resin, a cresol novolak type epoxy resin, a phenol aralkyl type epoxy resin, Biphenyl type epoxy resin, bisphenol A type epoxy resin, bisphenol F type epoxy resin, linear aliphatic epoxy resin, alicyclic epoxy resin, heterocyclic epoxy resin, epoxy resin containing spiro ring, xylok type epoxy resin, polypipe rhombic type epoxy resin, naphthol noblock type epoxy resin, bisphenol A/bisphenol F/bisphenol AD novolak type epoxy resin, bisphenol A/bisphenol F/bisphenol AD glycidyl ether epoxy resin, bishydroxybiphenyl type epoxy resin, Dicyclopentadiene-based epoxy resins, naphthalene-based epoxy resins, and the like.
- polyfunctional epoxy resins that are non-liquid at 25 ⁇ 5° C. are preferable.
- the non-liquid phase at 25 ⁇ 5° C. is a semi-solid or solid epoxy resin at 25 ⁇ 5° C., including epoxy resins close to the solid phase.
- the adhesive resin composition includes an acid anhydride-based curing agent.
- the acid anhydride-based curing agent can cure at least one of a liquid epoxy resin, a phenoxy resin, and a polyfunctional epoxy resin, and exhibit flux properties.
- Non-limiting examples of the acid anhydride-based curing agent include tetrahydrophthalic anhydride, methyl tetrahydrophthalic anhydride, methyl hexahydrophthalic anhydride, hexahydrophthalic anhydride, trialkyl tetrahydrophthalic anhydride, methyl cyclohexenedicarboxylic anhydride, phthalic acid
- tetrahydrophthalic anhydride methyl tetrahydrophthalic anhydride, methyl hexahydrophthalic anhydride, hexahydrophthalic anhydride, trialkyl tetrahydrophthalic anhydride, methyl cyclohexenedicarboxylic anhydride, phthalic acid
- anhydride, maleic anhydride, pyromellitic anhydride, and the like may be used alone or in combination of two or more.
- the adhesive resin composition may further include at least one curing agent known as a component for curing an epoxy resin in the art, in addition to the acid anhydride-based curing agent described above.
- at least one curing agent known as a component for curing an epoxy resin in the art, in addition to the acid anhydride-based curing agent described above.
- curing agents such as metaphenylenediamine, diamino biphenylmethane, and diamino biphenyl sulfone
- aliphatic amine curing agents such as diethylenetriamine and triethylenetetraamine
- Phenol aralkyl type phenol resin phenol novolak type phenol resin, xylok type phenol resin, cresol novolak type phenol resin, naphthol type phenol resin, terpene type phenol resin, polyfunctional type phenol resin, dicyclopentadiene type phenol resin, naphthalene type phenolic curing agents such as
- the adhesive resin composition includes a nitrogen (N)-containing heterocyclic compound.
- the N-containing heterocyclic compound is a kind of curing catalyst capable of accelerating curing, and can not only control the curing rate, but also ensure high-temperature stability of the adhesive layer.
- the nitrogen (N)-containing heterocyclic compound may be at least one selected from the group consisting of a compound represented by the following formula (2) and a compound represented by the following formula (3).
- n1 1 or 2
- n2 is an integer from 0 to 2
- X 1 To X 6 are the same as or different from each other, and each independently is N or C(R 1 ), provided that at least one of X 1 To X 6 is N,
- Y 1 To Y 6 are the same as or different from each other, and each independently is N(R 2 ) or C(R 3 )(R 4 ), provided that at least one of Y 1 To Y 6 is N(R 2 ),
- a plurality of C(R 1 ) are the same as or different from each other
- a plurality of N(R 2 ) are the same as or different from each other
- a plurality of C(R 3 )(R 4 ) are the same or different from each other
- R 1 , R 2 , R 3 and R 4 are each independently hydrogen, deuterium (D), halogen, cyano group, nitro group, C 1 ⁇ C 20 alkyl group, C 2 ⁇ C 20 alkenyl group, and C 2 ⁇ C 20 It is selected from the group consisting of an alkynyl group.
- 1 to 2 of X 1 to X 6 may be N, and the rest may be C(R 1 ).
- one or two of Y 1 to Y 6 may be N(R 2 ), and the rest may be C(R 3 )(R 4 ).
- R 1 , R 2 , R 3 and R 4 are each independently hydrogen, deuterium (D), halogen, cyano group, nitro group, C 1 ⁇ C 12 alkyl group, C 2 ⁇ C 12 can be selected in the alkenyl group, and alkynyl group the group consisting of C 2 ⁇ C 12.
- Examples of the compound represented by Formula 2 include, but are not limited to, a pyrazine-based compound, a pyridine-based compound, and the like. Specifically, a non-limiting example of the compound represented by Formula 2 may be a compound represented by Formula 2a below.
- Examples of the compound represented by Formula 3 include, but are not limited to, piperazine-based compounds.
- non-limiting examples of the compound represented by Formula 3 may be a compound represented by the following Formula 3a, a compound represented by the following Formula 3b, and the like.
- the N-containing heterocyclic compound may include at least one selected from the group consisting of a pyrazine-based compound, a pyridine-based compound, and a piperazine-based compound.
- the content of the N-containing heterocyclic compound is adjusted in consideration of the total content of the liquid epoxy resin, the phenoxy resin and the polyfunctional epoxy resin or their usage ratio, and the type and content of the acid anhydride-based curing agent It is preferable to do
- the content of the epoxy resin (that is, the total content of the liquid epoxy resin, the phenoxy resin and the polyfunctional epoxy resin) is about 40 to 80 wt% based on the total amount of the resin composition range
- the content of the acid anhydride-based curing agent is in the range of about 5 to 20% by weight based on the total amount of the resin composition
- the content of the N-containing heterocyclic compound is in the range of about 0.01 to 5% by weight based on the total amount of the resin composition.
- the ratio (mixing ratio) between the liquid epoxy resin, the phenoxy resin, and the polyfunctional epoxy resin may be 1:1 to 3: 1 to 3 by weight.
- the adhesive layer of the present invention is easy to handle and has excellent adhesion, and since the minimum melt viscosity at about 160 to 170 ° C. is about 3000 Pa.s or less and void generation is minimized, the filling property is excellent. Thus, the connection reliability can be improved.
- the adhesive resin composition includes a filler.
- the filler can control melt viscosity by expressing thixotropic properties, and can lower the coefficient of thermal expansion while improving adhesion.
- Such fillers may be organic fillers or inorganic fillers.
- metal components such as gold powder, silver powder, copper powder, nickel powder, etc.
- Non-metallic components such as alumina, aluminum hydroxide, magnesium hydroxide, calcium carbonate, magnesium carbonate, calcium silicate, magnesium silicate, calcium oxide, magnesium oxide, aluminum oxide, aluminum nitride, silica, boron nitride, titanium dioxide, glass, iron oxide, ceramic, etc.
- the organic filler includes, but is not limited to, carbon, rubber-based fillers, polymer-based fillers, and the like. These may be used alone or two or more may be used in combination.
- the shape and size of the filler are not particularly limited, and for example, the shape of the filler may be angular, spherical, or the like, and the average particle diameter may be in the range of about 10 to 100 nm. If the average particle diameter of the filler is within the aforementioned range, mechanical properties of the cured product may be further improved. According to one example, the filler may be silica having an average particle diameter of about 10 to 100 nm.
- the content of these fillers is not particularly limited, and for example, may be the remaining amount adjusted so that the total amount of the adhesive resin composition is 100% by weight, and specifically may be about 10 to 50% by weight based on the total amount of the adhesive resin composition. If the content of the filler is within the above range, since an adhesive layer having a low coefficient of thermal expansion (CTE) is formed, the difference in coefficient of thermal expansion between the substrate and the semiconductor device is small, so that the occurrence of warpage or cracks can be minimized. have.
- CTE coefficient of thermal expansion
- the adhesive resin composition of the present invention may optionally further include additives commonly known in the art in addition to the above-described components, if necessary, depending on the purpose and environment of use of the composition.
- additives commonly known in the art in addition to the above-described components, if necessary, depending on the purpose and environment of use of the composition.
- solvents such as acetone, methyl ethyl ketone, toluene, and ethyl acetate
- adhesion promoters such as acetone, methyl ethyl ketone, toluene, and ethyl acetate
- adhesion promoters such as acetone, methyl ethyl ketone, toluene, and ethyl acetate
- adhesion promoters such as acetone, methyl ethyl ketone, toluene, and ethyl acetate
- adhesion promoters such as acetone, methyl
- the content of these additives is not particularly limited and may be used in a conventional range known in the art. For example, it may be about 0.01 to 10% by weight based on the total amount of the resin composition.
- the above-described adhesive resin composition may be prepared through a method commonly known in the art.
- a liquid epoxy resin, a phenoxy resin, a polyfunctional epoxy resin, an acid anhydride-based curing agent, an N-containing heterocyclic compound, a filler, and optionally an additive are mixed with a ball mill, a bead mill, a three roll mill, a basket mill (basket mill). mill), a dyno mill, or a planetary (planetary) using mixing equipment such as mixing and stirring at room temperature to an appropriately elevated temperature to prepare the adhesive resin composition.
- the underfill film according to the present invention may be prepared by a method generally known in the art.
- an underfill film can be prepared by diluting the adhesive resin composition obtained through the above method with an organic solvent that can be diluted as needed, mixing it to an appropriate concentration for easy coating, and then applying it to a substrate and drying it. have.
- the coating and drying method is not particularly limited as long as it is a method capable of forming a coating film such as bar coating, gravure coating, comma roll coating, roll reverse coating, roll knife coating, die coating, or lip coating.
- the underfill film of the present invention described above has a low minimum melt viscosity, it minimizes the occurrence of voids during temporary plates between the semiconductor chip and the package substrate, and has excellent fillability, so that not only the connection reliability of the package is improved, but also the fine pitch ( fine pitch) can be applied. Also, unlike the related art, the bonding process may be simplified, and a mass reflow process may be performed.
- the underfill film 10B of the present invention includes a substrate (hereinafter, 'first substrate') 11; an adhesive layer 12 disposed on one surface of the substrate; and another substrate (hereinafter, 'second substrate') 13 disposed on the other surface of the adhesive layer 12 .
- first base material 11 and the adhesive layer 12 usable in the present invention are the same as those described in the base material and the adhesive layer part of the first embodiment, they will be omitted.
- the second substrate 13 is disposed on the other surface of the adhesive layer 13 to support the adhesive layer and protect the surface of the adhesive layer, and since it can be peeled, it is peeled off and removed when the film is used.
- This second base material 13 is the same as or different from the first base material, and the description of the example of the second base material is the same as that described in the description part of the first embodiment, so it will be omitted.
- the present invention may provide a method of manufacturing various semiconductor packages using the above-described underfill films 10A and 10B.
- the underfill films 10A and 10B have a lowest melt viscosity of about 3000 Pa.s or less at about 160 to 170° C., align the semiconductor chip and the package substrate by pressing at about 200° C. for about 1 to 3 seconds.
- the underfill film easily has fluidity to fill a gap between the semiconductor chip and the package substrate without voids, thereby improving the connection reliability of the semiconductor package. Accordingly, according to the present invention, it is possible to manufacture a semiconductor package having excellent connection reliability while simplifying the manufacturing process of the semiconductor package and improving production efficiency using the above-described underfill film.
- a method of manufacturing a semiconductor package includes the steps of: (a) disposing the adhesive layer of the underfill film on the bumps of the semiconductor chip provided with the bumps; (b) aligning the bumps of the semiconductor chip on which the adhesive layer is disposed on the bonding pads of the package substrate in which bonding pads are provided in regions corresponding to the bump positions; (c) melting the bump of the semiconductor chip to connect the semiconductor chip and the package substrate to each other; and (d) curing the adhesive layer disposed between the connected semiconductor chip and the package substrate.
- the steps of each process may be modified or selectively mixed as needed.
- the adhesive layer 12 of the above-described underfill films 10A and 10B is disposed on the bump 21 of the semiconductor chip 20 provided with the bump 21 (hereinafter, 'S100 step'). ').
- terminals (pads) (not shown) for connecting an internal electronic circuit to the outside are formed along the edge of the chip, and, if necessary, one row or two along the center of the chip. It may be formed by heat.
- Bumps 21 are formed on terminals of these semiconductor chips, respectively.
- the bump is an external terminal electrically connecting the substrate and the semiconductor chip during packaging, and may include a solder bump or an Au bump.
- the substrates 11 and 13 are separated from the underfill films 10A and 10B, and only the adhesive layer 12 is disposed on the bump 21 side of the semiconductor chip.
- the semiconductor chip 20 provided with the bumps 21 may be press-laminated on the adhesive layer 12 at a pressure of about 30 to 100 N.
- the semiconductor chip 20 may be pressure-laminated at a temperature lower than the onset temperature of the adhesive layer, for example, 50 to 150°C. Accordingly, the adhesive layer is pressed on the bump of the semiconductor chip in a semi-cured state (B-stage).
- the adhesive layer can serve not only as an underfill but also as a flux, the present invention does not require washing the bumps with a flux, unlike the prior art.
- step S100 The semiconductor chip 20 on which the adhesive layer 12 is pressed in step S100 is aligned on the package substrate 30 (hereinafter, 'step S200').
- the package substrate 30 usable in the present invention is a substrate having a circuit pattern (not shown) formed on at least one surface, and may be, for example, a printed circuit board (PCB).
- a bonding pad 31 is formed in a region corresponding to the position of the bump 21 of the semiconductor chip 20 on the package substrate 30 .
- the semiconductor chip 20 is mounted on the package substrate 30 so that the semiconductor chip 20 on which the bump 21 is formed is arranged on the bonding pad 31 .
- the bump 21 of the semiconductor chip 20 is pressed onto the bonding pad 31 of the package substrate 30 under the conditions of about 200° C., about 30 to 100 N, and about 1 to 3 seconds to form the package substrate 30 and
- the semiconductor chip 20 may be pre-bonded.
- the adhesive layer 12 disposed between the semiconductor chip 20 and the package substrate 30 flows because the lowest melt viscosity is low, as described above. For this reason, the void area ratio in the adhesive layer is about 1% or less.
- the adhesive layer 12 contains a component capable of performing a flux function, unlike the prior art, it is necessary to apply flux to the bonding pad 31 of the package substrate 30 before step S200. there is no Therefore, in the present invention, the process of applying the flux to the bonding pad and the process of cleaning the flux can be omitted.
- the bump 21 of the semiconductor chip 20 is melted to electrically and mechanically connect the semiconductor chip 20 and the package substrate 30 (hereinafter, 'step S300 ').
- Step S300 is a step of reflowing the bumps in an oven at about 150 to 300 °C, specifically about 170 to 270 °C, the bumps are melted so that the semiconductor chip 20 and the package substrate 30 are electrically and mechanically connect
- the adhesive layer 12 disposed between the semiconductor chip 20 and the package substrate 30 is also melted, and the void area ratio in the adhesive layer is further reduced to about 0.5% or less. Accordingly, the connection reliability of the semiconductor package manufactured according to the present invention may be further improved.
- the adhesive layer 12 disposed between the semiconductor chip 20 and the package substrate 30 connected in step S300 is cured (hereinafter, 'step S400').
- step S400 may be performed at a temperature higher than the above-described onset temperature, for example, about 170 to 250 °C.
- the curing time of the adhesive layer is controlled according to the curing temperature, and may be, for example, about 0.5 to 3 hours.
- Adhesive resin compositions of Examples 1 to 3 and Comparative Example 1 were prepared by mixing each component according to the composition shown in Table 1 below.
- the content unit of each component described in Table 1 is in weight %, based on the total amount of the resin composition.
- each of the adhesive resin compositions prepared in Example 1-1 was die coated, and then dried to form an adhesive layer (thickness: 18 ⁇ m) to form a non-conductive adhesive film was prepared.
- the Onset Temperature of the non-conductive adhesive film was measured using a Differential Scanning Calorimetry (DSC).
- the viscosity of the non-conductive adhesive film was measured using a rheometer while increasing the temperature from 50°C to 300°C at a rate of 10°C per minute.
- Example 1 Example 2 Example 3 Comparative Example 1 Onset Temperature (°C) 171 175 198 140 Melt Viscosity (Pa.s) 2775 980 450 4537
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Abstract
Description
| 실시예 1 | 실시예 2 | 실시예 3 | 비교예 1 | |
| Onset Temperature (℃) | 171 | 175 | 198 | 140 |
| Melt Viscosity (Pa.s) | 2775 | 980 | 450 | 4537 |
Claims (12)
- 기재; 및상기 기재의 일면에 배치되고, 160 내지 170 ℃에서의 최저 용융 점도가 3000 Pa.s 이하인 접착층을 포함하는 반도체 패키지용 언더필 필름.
- 제1항에 있어서,상기 접착층을 범프(bump)가 구비된 반도체 칩과 본딩 패드가 구비된 패키지 기판 사이에 위치시키고, 200 ℃, 30 ~ 100N, 1~3초 조건하에서 압착시 상기 접착층의 보이드 면적율은 1 ㎡당 1% 이하인, 반도체 패키지용 언더필 필름.
- 제2항에 있어서,상기 접착층의 두께는 상기 반도체 칩과 패키지 기판 간의 간격의 80 내지 120 % 범위인, 반도체 패키지용 언더필 필름.
- 제1항에 있어서,시차 주사 열량분석기(DSC) 상 개시 온도(Onset Temperature)가 160 내지 220 ℃ 범위인, 반도체 패키지용 언더필 필름.
- 제1항에 있어서,상기 접착층은 (a) 액상 에폭시 수지, 페녹시 수지 및 다관능성 에폭시 수지를 함유하는 에폭시 수지; (b) 산무수물계 경화제; (c) 질소(N)-함유 헤테로고리 화합물; 및 (d) 필러(filler)를 포함하는 접착 수지 조성물의 경화물인, 반도체 패키지용 언더필 필름.
- 제5항에 있어서,상기 N-함유 헤테로고리 화합물은 하기 화학식 2로 표시되는 화합물 및 하기 화학식 3으로 표시되는 화합물로 이루어진 군에서 선택된 1종 이상인, 반도체 패키지용 언더필 필름:[화학식 2][화학식 3](상기 화학식 2 및 3에서,n1은 1 또는 2이며,n2는 0 내지 2의 정수이며,X1 내지 X6은 서로 동일하거나 또는 상이하고, 각각 독립적으로 N 또는 C(R1)이고, 다만 X1 내지 X6 중 1 이상이 N이며,Y1 내지 Y6은 서로 동일하거나 또는 상이하고, 각각 독립적으로 N(R2) 또는 C(R3)(R4)이고, 다만 Y1 내지 Y6 중 1 이상이 N(R2)이며,이때 복수의 C(R1)는 서로 동일하거나 또는 상이하고, 복수의 N(R2)는 서로 동일하거나 또는 상이하며, 복수의 C(R3)(R4)은 서로 동일하거나 또는 상이하고,R1, R2, R3 및 R4는 각각 독립적으로 수소, 중수소(D), 할로겐, 시아노기, 니트로기, C1~C20의 알킬기, C2~C20의 알케닐기, 및 C2~C20의 알키닐기로 이루어진 군에서 선택됨).
- 제5항에 있어서,상기 접착 수지 조성물은 당해 접착 수지 조성물의 총량을 기준으로40 내지 80 중량%의 에폭시 수지,5 내지 20 중량%의 경화제,0.01 내지 5 중량%의 N-함유 헤테로고리 화합물, 및10 내지 50 중량%의 필러를 포함하는, 반도체 패키지용 언더필 필름.
- 제5항에 있어서,상기 액상 에폭시 수지, 페녹시 수지 및 다관능성 에폭시 수지는 1 : 1~3 : 1~3 중량비율로 포함되는, 반도체 패키지용 언더필 필름.
- 범프가 구비된 반도체 칩의 범프 상에 제1항 내지 제8항 중 어느 한 항에 기재된 언더필 필름의 접착층을 압착하는 단계;상기 접착층이 압착된 반도체 칩의 범프를 상기 범프 위치에 대응되는 영역에 본딩 패드가 구비된 패키지 기판의 본딩 패드 위에 정렬시키는 단계;상기 반도체 칩의 범프를 용융시켜 반도체 칩과 패키지 기판을 접속시키는 단계; 및상기 접속된 반도체 칩과 패키지 기판 사이에 배치된 접착층을 경화시키는 단계를 포함하는 반도체 패키지의 제조방법.
- 제9항에 있어서,상기 범프와 본딩 패드 간의 정렬 단계는 200 ℃, 30 ~ 100N, 1~3초 조건하에서 압착하여 행해지고,상기 압착 후, 상기 접착층 내 보이드 면적율은 1 % 이하인, 반도체 패키지의 제조방법.
- 제10항에 있어서,상기 범프의 용융 단계 후, 상기 접착층 내 보이드 면적율은 0.5 % 이하인, 반도체 패키지의 제조방법.
- 제9항에 있어서,상기 접착층의 경화 온도는 170 내지 250 ℃ 범위인, 반도체 패키지의 제조방법.
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| JP2022533658A JP7373073B2 (ja) | 2019-12-05 | 2020-12-04 | 半導体パッケージ用アンダーフィルフィルム及びこれを用いた半導体パッケージの製造方法 |
| CN202080083866.7A CN114762104B (zh) | 2019-12-05 | 2020-12-04 | 半导体封装用底部填充膜和利用其的半导体封装的制造方法 |
| EP20896504.6A EP4068352A4 (en) | 2019-12-05 | 2020-12-04 | UNDERFILLING FILM FOR SEMICONDUCTOR HOUSING AND METHOD FOR MANUFACTURING A SEMICONDUCTOR HOUSING THEREOF |
| US17/782,452 US20230027838A1 (en) | 2019-12-05 | 2020-12-04 | Underfill film for semiconductor package and method for manufacturing semiconductor package using same |
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| KR10-2019-0160625 | 2019-12-05 | ||
| KR1020190160625A KR102696450B1 (ko) | 2019-12-05 | 2019-12-05 | 반도체 패키지용 언더필 필름 및 이를 이용하는 반도체 패키지의 제조방법 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080113670A (ko) * | 2007-06-25 | 2008-12-31 | 주식회사 엘지화학 | 접착수지 조성물, 접착필름, 다이싱 다이 본딩 필름 및반도체 장치 |
| KR20130087407A (ko) * | 2010-06-28 | 2013-08-06 | 아유미 고교 가부시키가이샤 | 접합 구조체 제조 방법 및 가열 용융 처리 방법과 그 시스템 |
| JP2013227429A (ja) * | 2012-04-25 | 2013-11-07 | Shin-Etsu Chemical Co Ltd | 接着剤組成物、並びにこれを用いた接着シート、半導体装置保護用材料、及び半導体装置 |
| US20160312070A1 (en) * | 2014-01-02 | 2016-10-27 | Henkel IP & Holding GmbH | Pre-applied underfill film containing nano-particulate filler for 3dic applications, compositions useful for the preparation thereof, and uses thereof |
| KR20170113430A (ko) * | 2016-03-31 | 2017-10-12 | 주식회사 엘지화학 | 반도체 장치 및 반도체 장치의 제조 방법 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008129590A1 (ja) | 2007-04-10 | 2008-10-30 | Sumitomo Bakelite Co., Ltd. | 半導体用接着フィルム及びこれを用いた半導体装置 |
| JP2013219286A (ja) | 2012-04-11 | 2013-10-24 | Hitachi Chemical Co Ltd | 半導体封止用接着剤及びフィルム状半導体封止用接着剤 |
| JP6366590B2 (ja) | 2013-09-10 | 2018-08-01 | 日本化薬株式会社 | エポキシ樹脂混合物、エポキシ樹脂組成物、硬化物および半導体装置 |
| JP6129696B2 (ja) | 2013-09-11 | 2017-05-17 | デクセリアルズ株式会社 | アンダーフィル材、及びこれを用いた半導体装置の製造方法 |
| JP2015216317A (ja) * | 2014-05-13 | 2015-12-03 | 日東電工株式会社 | 半導体装置の製造方法 |
| JP5901715B1 (ja) * | 2014-09-05 | 2016-04-13 | 古河電気工業株式会社 | フィルム状接着剤、フィルム状接着剤を用いた半導体パッケージ及びその製造方法 |
| JP6438790B2 (ja) * | 2015-02-06 | 2018-12-19 | デクセリアルズ株式会社 | 半導体装置の製造方法、及びアンダーフィルフィルム |
| CN108137903B (zh) * | 2015-10-07 | 2020-08-21 | 汉高知识产权控股有限责任公司 | 配制物及其用于3d tsv封装的用途 |
-
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080113670A (ko) * | 2007-06-25 | 2008-12-31 | 주식회사 엘지화학 | 접착수지 조성물, 접착필름, 다이싱 다이 본딩 필름 및반도체 장치 |
| KR20130087407A (ko) * | 2010-06-28 | 2013-08-06 | 아유미 고교 가부시키가이샤 | 접합 구조체 제조 방법 및 가열 용융 처리 방법과 그 시스템 |
| JP2013227429A (ja) * | 2012-04-25 | 2013-11-07 | Shin-Etsu Chemical Co Ltd | 接着剤組成物、並びにこれを用いた接着シート、半導体装置保護用材料、及び半導体装置 |
| US20160312070A1 (en) * | 2014-01-02 | 2016-10-27 | Henkel IP & Holding GmbH | Pre-applied underfill film containing nano-particulate filler for 3dic applications, compositions useful for the preparation thereof, and uses thereof |
| KR20170113430A (ko) * | 2016-03-31 | 2017-10-12 | 주식회사 엘지화학 | 반도체 장치 및 반도체 장치의 제조 방법 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4068352A4 * |
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| JP2023505277A (ja) | 2023-02-08 |
| KR20210070639A (ko) | 2021-06-15 |
| CN114762104B (zh) | 2025-11-14 |
| JP7373073B2 (ja) | 2023-11-01 |
| EP4068352A4 (en) | 2024-05-15 |
| EP4068352A1 (en) | 2022-10-05 |
| US20230027838A1 (en) | 2023-01-26 |
| KR102696450B1 (ko) | 2024-08-16 |
| CN114762104A (zh) | 2022-07-15 |
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