DE2543553A1 - Etching mask prodn. with single positive negative working resist - crosslinked by electrons and depolymerised by photons - Google Patents
Etching mask prodn. with single positive negative working resist - crosslinked by electrons and depolymerised by photonsInfo
- Publication number
- DE2543553A1 DE2543553A1 DE19752543553 DE2543553A DE2543553A1 DE 2543553 A1 DE2543553 A1 DE 2543553A1 DE 19752543553 DE19752543553 DE 19752543553 DE 2543553 A DE2543553 A DE 2543553A DE 2543553 A1 DE2543553 A1 DE 2543553A1
- Authority
- DE
- Germany
- Prior art keywords
- radiation
- resist material
- acid esters
- crosslinked
- methacrylic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005530 etching Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 37
- 230000005855 radiation Effects 0.000 claims abstract description 22
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- 229920001577 copolymer Polymers 0.000 claims abstract description 6
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000010894 electron beam technology Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 22
- 125000005396 acrylic acid ester group Chemical group 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 125000005397 methacrylic acid ester group Chemical group 0.000 claims description 5
- 125000003700 epoxy group Chemical group 0.000 claims description 4
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 3
- 229920002845 Poly(methacrylic acid) Polymers 0.000 claims description 3
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims 1
- 239000012634 fragment Substances 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract description 2
- 241001082241 Lythrum hyssopifolia Species 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/095—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having more than one photosensitive layer
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2022—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Materials For Photolithography (AREA)
Abstract
Description
~Verfahren zur Herstellung einer Ätzmaske" ~ Process for the production of an etching mask "
Die Erfindung betrifft ein Verfahren zur Herstellung einer Ätzmaske unter Verwendung eines auf einem Trägerkörper aufgebrachten organischen Resist-Materials, welches durch energiereiche Strahlen strukturiert wird.The invention relates to a method for producing an etching mask using an organic resist material applied to a carrier body, which is structured by high-energy rays.
Es ist bereits eine Vielzahl von organischen Resist-Materialien bekannt, welche sich sowohl durch kurzwellige Photonenstrahlung, be z. B. UV-Strahlung oder durch Elektrone#trahlung strukturieren und somit als Maske bei Ätzprozessen verwenden lassen. Die genannten Belichtungsverfahren bewirken bei diesen Materialien Jedoch immer dieselbe Belichtungsreaktion, d. h. Je nach Art des Resist-Materials tritt eine Depolymerisation auf (positiv arbeitendes Resist-Material) oder das Polymer vernetzt (negativ arbeitendes Resist-flaterial). Wird das Resist-Material z. B.A large number of organic resist materials are already known, which both by short-wave photon radiation, be z. B. UV radiation or structure by electron radiation and thus use it as a mask in etching processes permit. However, the above-mentioned exposure processes have the effect of these materials always the same exposure reaction, d. H. Occurs depending on the type of resist material a depolymerization on (positive-working resist material) or the polymer cross-linked (negative-working resist material). If the resist material is z. B.
nacheinander einer Elektronen- und einer Uv-Strahlung ausgesetzt, so ergänzen, bzw. addieren sich die mit Hilfe der beiden Belichtungsverfahren strukturierten Bereiche.exposed one after the other to electron and UV radiation, in this way, those structured with the help of the two exposure processes complement or add up Areas.
Durch die unter der Einwirkung der Elektronen- oder W-Strahlung erfolgte Änderung des Polymerisationsgrades wird die Löslichkeit des Resist-Materials gegenüber spezifischen Lösungsmitteln geändert. Bei positiv arbeitenden Resist-Materialien wird die Löslichkeit erhöht, bei negativ arbeitenden erniedrigt.By which took place under the action of electron or UV radiation Change in the degree of polymerization is opposed to the solubility of the resist material specific solvents changed. With positive-working resist materials the solubility is increased, in negative-working people it is decreased.
Verwendung finden solche Resist-Materialien vorzugsweise als Ätzmaskon zur Herstellung von Strukturen hoher Auflösung, beispielsweise in der Halbleitertechnologie. Das Resist-Material wird hierbei als Schicht auf den zu ätzenden Trägerkörper aufgebracht, sodann belichtet und schließlich entwickelt, d. h. mit einem spezifischen Lösungsmittel behandelt. Die auf diese Weise freigelegten Bereiche der Oberfläche des trägerkörpers können dann einem Ätzprozeß unterworfen werden.Such resist materials are preferably used as an etching mask for the production of structures with high resolution, for example in semiconductor technology. The resist material is applied as a layer to the carrier body to be etched, then exposed and finally developed, d. H. with a specific solvent treated. The areas of the surface of the carrier body exposed in this way can then be subjected to an etching process.
Sollen z. B. zwei aufeinanderliegende flaterialsch#chten verschieden strukturiert werden, so muß dieses Verfahren gegebenenfalls mehrfach wiederholt werden, d. h. es muß zumindest eine zweite Schicht Resist-Material aufgebracht werden, wiederum belichtet, entwickelt und anschließend nochmals geätzt werden.Should z. B. two layers of material lying on top of each other are different are structured, this procedure may have to be repeated several times be, d. H. at least a second layer of resist material must be applied, again exposed, developed and then etched again.
Es ist also ein erheblicher Zeitaufwand erforderlich, weshalb man bestrebt ist, Verfahren zu finden, mit deren Hilfe dieser Aufwand verringert werden kann.So it takes a considerable amount of time, which is why one endeavors to find methods with the help of which this effort can be reduced can.
Der Erfindung lag daher die Aufgabe zugrunde, zwei Ätzmasken unter Verwendung eines Resist-Materials herzustellen, mit deren Hilfe zwei voneinander unabhängige Ätzprozesse durchgeführt werden können Diese Auf gabe wird erfindungsgemäß dadurch gelöst, daß wenigstens eine Struktur durch Elektronenbestrahlung und wenigstens eine weitere Struktur durch Photonenstrahlung mit jeweils strahlungsspezifischer Entwicklung erzeugt wird und daß ein hochpolymeres Resist-Material verwendet wird, welches unter der Einwirkung eines Elektronenstrahles vernetzt und unter der Einwirkung von Photonenstrahlung depolymerisiert.The invention was therefore based on the object of providing two etching masks Using a resist material to manufacture, with the help of two of each other independent etching processes can be carried out. This task is according to the invention solved in that at least one structure by electron irradiation and at least another structure through photon radiation, each radiation-specific Development is generated and that a high polymer resist material is used, which crosslinked under the action of an electron beam and under the action depolymerized by photon radiation.
Als Resist-Materialien kommen vorzugsweise solche Polymere in Frage, welche zumindest eine aus spaltbaren C - C-Bindungen aufgebaute Hauptkette und in den Seitenketten Epoxygruppen enthält. Besonders gute Ergebnisse lassen sich bei Verwendung eines Polymers epoxygruppenhaltiger Acrylsäureester oder Methacrylsäureester, vorzugsweise Poly(methacrylsäure-glycidylester) oder eines Copolymers epoxygruppenhaltiger Acrylsäureester oder Methacrylsäureester mit Acrylsäureestern oder Methacrylsäureesternj vorzugsweise einem Copolymerisat aus Methacrylsäureglycidylester und jcrylsäure-äthylester als Resist-Material erzielen.Resist materials that are preferably used are those polymers which has at least one main chain built up from cleavable C - C bonds and in the side chains contains epoxy groups. Particularly good results can be achieved with Use of a polymer containing acrylic acid esters or methacrylic acid esters containing epoxy groups, preferably poly (methacrylic acid glycidyl ester) or a copolymer containing epoxy groups Acrylic acid esters or methacrylic acid esters with acrylic acid esters or methacrylic acid estersj preferably a copolymer of glycidyl methacrylate and ethyl acrylate as a resist material.
Das erfindungsgemäße Verfahren soll anhand eines Beispiels unter Zuhilfenahme der Figuren 1 bis 3 näher erläutert werden.The method according to the invention is intended to be based on an example with the aid Figures 1 to 3 are explained in more detail.
In Figur 1 ist ein Trägerkörper dargestellt, der z. B aus Silizium oder Keramik bestehen kann. Darauf sind zwei zu strukturierende Schichten,hier allgemein Material I und II genannt, aufgebracht. Darüber wird das hochpolymere Resistmaterial mit wechselndem Belichtungsverhalten, z B. Poly (methacrylsäure-glycidylester) oder einem Copolymerisat aus Methacrylsäure-glycidylester und Acrylsäure-äthylester aufgeschleudert.In Figure 1, a carrier body is shown, the z. B made of silicon or ceramics. There are two layers to be structured, here in general Material I and II called, applied. Above that is the high polymer resist material with changing exposure behavior, e.g. poly (methacrylic acid glycidyl ester) or a copolymer of glycidyl methacrylate and ethyl acrylate.
Im Kontaktverfahren werden zunächst bestimmte Bereiche der Resistschicht durch Uv-Belichtung depolymerisiert. Mit Hilfe der Elektronenstrahlbelichtung wird nun dieselbe Resistschicht an bestimmten Stellen vernetzt (Figur 1). Durch Entwicklung in Methylisobutylketon wird der depolimerisierte - Teil des Resistmaterials abgelöst. Hierauf folgen die zwei Ätzprozesse für Material I und Material II (Figur 2).In the contact process, certain areas of the resist layer are first created depolymerized by UV exposure. With the help of electron beam exposure now the same resist layer is crosslinked at certain points (FIG. 1). Through development in methyl isobutyl ketone the depolymerized part of the resist material is removed. This is followed by the two etching processes for material I and material II (FIG. 2).
Eine Entwicklung in heißem Nethyläthylketon löst den unbestrahlten Teil des Resistmaterials, so daß nur noch die vernetzten Bereiche übrig bleiben. Nunmehr folgt der Ätzprozeß für Material 1. Abschließend wird das vernetzte Resistmaterial entfernt (Figur 3).Development in hot ethyl ethyl ketone dissolves the unirradiated one Part of the resist material so that only the cross-linked areas remain. The etching process for material 1 now follows. Finally, the crosslinked resist material is used removed (Figure 3).
Mit Hilfe nur einer Resistschicht ist es also möglich auf dem Träger Bereiche zu strukturieren, wo entweder kein Material oder nur Material II oder Material I und II vorhanden ist.With the help of only one resist layer it is therefore possible on the carrier Structure areas where either no material or only material II or material I and II is present.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752543553 DE2543553A1 (en) | 1975-09-30 | 1975-09-30 | Etching mask prodn. with single positive negative working resist - crosslinked by electrons and depolymerised by photons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752543553 DE2543553A1 (en) | 1975-09-30 | 1975-09-30 | Etching mask prodn. with single positive negative working resist - crosslinked by electrons and depolymerised by photons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2543553A1 true DE2543553A1 (en) | 1977-03-31 |
Family
ID=5957822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752543553 Withdrawn DE2543553A1 (en) | 1975-09-30 | 1975-09-30 | Etching mask prodn. with single positive negative working resist - crosslinked by electrons and depolymerised by photons |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2543553A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037708A3 (en) * | 1980-04-02 | 1982-06-02 | Hitachi, Ltd. | Method of forming patterns |
| EP0810477A3 (en) * | 1996-05-24 | 1998-12-30 | Texas Instruments Incorporated | Photoactive systems for high resolution photolithography |
| DE10106861C1 (en) * | 2001-02-14 | 2003-02-06 | Infineon Technologies Ag | Production of fine resist structures in a photoresist layer during the manufacture of microelectronic components by applying a photoresist layer, applying and exposing 2 masks at different wavelengths and developing resist |
| US6989227B2 (en) * | 2002-06-07 | 2006-01-24 | Applied Materials Inc. | E-beam curable resist and process for e-beam curing the resist |
| WO2008028458A3 (en) * | 2006-09-04 | 2008-06-26 | Forschungszentrum Juelich Gmbh | Lithography method for producing a feature |
-
1975
- 1975-09-30 DE DE19752543553 patent/DE2543553A1/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037708A3 (en) * | 1980-04-02 | 1982-06-02 | Hitachi, Ltd. | Method of forming patterns |
| EP0810477A3 (en) * | 1996-05-24 | 1998-12-30 | Texas Instruments Incorporated | Photoactive systems for high resolution photolithography |
| DE10106861C1 (en) * | 2001-02-14 | 2003-02-06 | Infineon Technologies Ag | Production of fine resist structures in a photoresist layer during the manufacture of microelectronic components by applying a photoresist layer, applying and exposing 2 masks at different wavelengths and developing resist |
| US6989227B2 (en) * | 2002-06-07 | 2006-01-24 | Applied Materials Inc. | E-beam curable resist and process for e-beam curing the resist |
| WO2008028458A3 (en) * | 2006-09-04 | 2008-06-26 | Forschungszentrum Juelich Gmbh | Lithography method for producing a feature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8141 | Disposal/no request for examination |