IP Library › Granted Patent US 7,638,268
Granted Patent B2
US 7,638,268 · App. 11/594,937 · Granted Dec 29, 2009

Rework process for photoresist film

Assignee: Shin-Estu Chemical Co., Ltd.
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Quick Facts
Patent No.
US 7,638,268
App. No.
11/594,937
Granted
Dec 29, 2009
Kind
B2
Abstract

There is disclosed a rework process for a photoresist film over a substrate having at least a first antireflection silicone resin film and the photoresist film over the first silicone resin film comprising: at least removing the photoresist film with a solvent while leaving the first silicone resin film unremoved; forming a second antireflection silicone resin film over the first silicone resin film; and forming a photoresist film again over the second silicone resin film. There can be provided a rework process for a photoresist film that can be conducted more easily at lower cost and provide more certainly an excellent resist pattern.

Claims (42)

1. A rework process for a photoresist film over a substrate having at least a first antireflection silicone resin film and the photoresist film over the first silicone resin film comprising: at least

removing the photoresist film with at least one solvent selected from the group consisting of cyclopentanone, 5-methyl-2-hexanone ethyl-2-n-amyl ketone, 3-methoxy butanol, 3-ethyl-3-methoxy butanol, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol diethyl ether, propylene glycol monoethyl ether acetate, ethyl lactate, ethyl pyruvate, ethyl 3-methoxy propionate, ethyl 3-ethoxy propionate, tert-butyl acetate, tert-butyl propionate, propylene glycol mono tert-butyl-ether acetate, and γ-butyrolactone, while leaving the first silicone resin film unremoved;

forming a second antireflection silicone resin film over the first silicone resin film; and

forming a photoresist film again over the second silicone resin film.

2. The rework process for a photoresist film according to claim 1 , wherein the first and the second silicone resin films each has cross-links between side chains of the silicone resin, between a side chain and a silanol group of the silicone resin, or both between side chains of the silicone resin and between a side chain and a silanol group of the silicone resin.

3. The rework process for a photoresist film according to claim 2 , wherein the first and the second silicone resin films each has the cross-links formed by any one or more of a crosslinkable hydroxy group and a crosslinkable epoxy group in a side chain of the silicone resin.

4. The rework process for a photoresist film according to claim 1 , wherein the substrate over which the photoresist film is reworked has an organic film under the first silicone resin film.

5. The rework process for a photoresist film according to claim 2 , wherein the substrate over which the photoresist film is reworked has an organic film under the first silicone resin film.

6. The rework process for a photoresist film according to claim 3 , wherein the substrate over which the photoresist film is reworked has an organic film under the first silicone resin film.

7. A patterning process comprising: at least

forming a photoresist film again over the second silicone resin film by the rework process according to claim 1 ;

subsequently forming a resist pattern on the photoresist film;

forming a pattern on the first and the second silicone resin films by using the photoresist film on which the resist pattern is formed as a mask; and

forming a pattern on the substrate by using the pattern-formed first and second silicone resin films as a mask.

8. A patterning process comprising: at least

forming a photoresist film again over the second silicone resin film by the rework process according to claim 2 ;

subsequently forming a resist pattern on the photoresist film;

forming a pattern on the first and the second silicone resin films by using the photoresist film on which the resist pattern is formed as a mask; and

forming a pattern on the substrate by using the pattern-formed first and second silicone resin films as a mask.

9. A patterning process comprising: at least

forming a photoresist film again over the second silicone resin film by the rework process according to claim 3 ;

subsequently forming a resist pattern on the photoresist film;

forming a pattern on the first and the second silicone resin films by using the photoresist film on which the resist pattern is formed as a mask; and

forming a pattern on the substrate by using the pattern-formed first and second silicone resin films as a mask.

10. A patterning process comprising: at least

forming a photoresist film again over the second silicone resin film by the rework process according to claim 4 ;

subsequently forming a resist pattern on the photoresist film;

forming a pattern on the first and the second silicone resin films by using the photoresist film on which the resist pattern is formed as a mask;

forming a pattern on the organic film by using the pattern-formed first and second silicone resin films as a mask; and

forming a pattern on the substrate by using the pattern-formed organic film as a mask.

11. A patterning process comprising: at least

forming a photoresist film again over the second silicone resin film by the rework process according to claim 5 ;

subsequently forming a resist pattern on the photoresist film;

forming a pattern on the first and the second silicone resin films by using the photoresist film on which the resist pattern is formed as a mask;

forming a pattern on the organic film by using the pattern-formed first and second silicone resin films as a mask; and

forming a pattern on the substrate by using the pattern-formed organic film as a mask.

12. A patterning process comprising: at least

forming a photoresist film again over the second silicone resin film by the rework process according to claim 6 ;

subsequently forming a resist pattern on the photoresist film;

forming a pattern on the first and the second silicone resin films by using the photoresist film on which the resist pattern is formed as a mask;

forming a pattern on the organic film by using the pattern-formed first and second silicone resin films as a mask; and

forming a pattern on the substrate by using the pattern-formed organic film as a mask.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 9, 2006
From: OGIHARA, TSUTOMU; UEDA, TAKAFUMI
To: SHIN-ETSU CHEMICAL CO., LTD.
Reel/Frame 018593/0717 →
Priority Claims (1)
JP 2005-335518 · Nov 21, 2005 · national
Continuity (1)
Related Publication 20070117411A1 · May 24, 2007