Pattern forming method, method for manufacturing electronic device, and laminate

Patent metadata

Field	Value
Publication number	US-10663864-B2
Application number	US-201815904438-A
Country	US
Kind code	B2
Filing date	Feb 26, 2018
Priority date	Sep 30, 2015
Publication date	May 26, 2020
Grant date	May 26, 2020

Abstract

The pattern forming method includes forming an actinic ray-sensitive or radiation-sensitive film using an actinic ray-sensitive or radiation-sensitive composition, forming an upper layer film on the actinic ray-sensitive or radiation-sensitive film using a composition for forming an upper layer film, exposing the actinic ray-sensitive or radiation-sensitive film having the upper layer film formed thereon, and developing the exposed actinic ray-sensitive or radiation-sensitive film using a developer, in which the composition for forming an upper layer film includes a solvent and a crosslinking agent; and in which the content of a solvent having a hydroxyl group is 80% by mass or less with respect to all the solvents included in the composition for forming an upper layer film. The method for manufacturing an electronic device includes the pattern forming method. The laminate has an actinic ray-sensitive or radiation-sensitive film, and an upper layer film including a crosslinking agent.

First claim

What is claimed is:

1. A pattern forming method comprising:
(a) forming an actinic ray-sensitive or radiation-sensitive film using an actinic ray-sensitive or radiation-sensitive composition;
(b) forming an upper layer film on the actinic ray-sensitive or radiation-sensitive film using a composition for forming an upper layer film;
(c) exposing the actinic ray-sensitive or radiation-sensitive film having the upper layer film formed thereon; and
(d) developing the exposed actinic ray-sensitive or radiation-sensitive film using a developer,
wherein the composition for forming an upper layer film includes a solvent and a crosslinking agent;
wherein the content of a solvent having a hydroxyl group is 80% by mass or less with respect to all the solvents included in the composition for forming an upper layer film, and
wherein the developer includes at least one solvent selected from the group consisting of an ester-based solvent, a ketone-based solvent, an ether-based solvent, and a hydrocarbon-based solvent.

2. The pattern forming method according to claim 1 ,
wherein the crosslinking agent is a crosslinking agent having two or more methylol groups, a crosslinking agent having two or more alkoxymethyl groups, or a crosslinking agent having one or more methylol groups and one or more alkoxymethyl groups.

3. The pattern forming method according to claim 1 ,
wherein the content of the crosslinking agent is 5% by mass or more with respect to the total solid content of the composition for forming an upper layer film.

4. The pattern forming method according to claim 1 ,
wherein the composition for forming an upper layer film includes a resin containing a repeating unit having an aromatic ring.

5. The pattern forming method according to claim 1 ,
wherein the developer is an alkali developer.

6. The pattern forming method according to claim 1 ,
wherein the exposure is carried out using electron beams or extreme ultraviolet rays.

7. The pattern forming method according to claim 1 , further comprising (e) rinsing the developed actinic ray-sensitive or radiation-sensitive film using a rinsing liquid after the step (d).

8. The pattern forming method according to claim 1 ,
wherein the solvent contains a non-fluorinated alcohol.

9. The pattern forming method according to claim 1 ,
wherein the crosslinking agent includes at least one compound selected from the group consisting of the following compounds and a compound represented by General Formula (CI),

in the formulae, L 1 to L 8 each independently represent a hydrogen atom, a hydroxymethyl group, a methoxymethyl group, an ethoxymethyl group, or an alkyl group having 1 to 6 carbon atoms, and

in General Formula (CI), R 1 and R 6 each independently represent a hydrogen atom or a hydrocarbon group having 5 or less carbon atoms,
R 2 and R 5 each independently represent an alkyl group, a cycloalkyl group, an aryl group, or an acyl group, and
R 3 and R 4 each independently represent a hydrogen atom, or an organic group having 2 or more carbon atoms, R 3 and R 4 may be bonded to each other to form a ring.

10. A method for manufacturing an electronic device, comprising the pattern forming method according to claim 1 .

11. A laminate comprising:
an actinic ray-sensitive or radiation-sensitive film; and
an upper layer film including a crosslinking agent,
wherein the crosslinking agent includes at least one compound selected from the group consisting of the following compounds and a compound represented by General Formula (CI),

in the formulae, L 1 to L 8 each independently represent a hydrogen atom, a hydroxymethyl group, a methoxymethyl group, an ethoxymethyl group, or an alkyl group having 1 to 6 carbon atoms, and

in General Formula (CI), R 1 and R 6 each independently represent a hydrogen atom or a hydrocarbon group having 5 or less carbon atoms,
R 2 and R 5 each independently represent an alkyl group, a cycloalkyl group, an aryl group, or an acyl group, and
R 3 and R 4 each independently represent a hydrogen atom, or an organic group having 2 or more carbon atoms, R 3 and R 4 may be bonded to each other to form a ring.

Assignees

• Fujifilm Corp

Inventors

• Nihashi Wataru
• Tsubaki Hideaki
• Tsuchihashi Toru
• Yamamoto Kei

Classifications

• G03F7/322

  Aqueous alkaline compositions · CPC title

• G03F7/038

  Macromolecular compounds which are rendered insoluble or differentially wettable (G03F7/075 takes precedence; macromolecular azides G03F7/012; macromolecular diazonium compounds G03F7/021) · CPC title

• G03F7/20

  Exposure; Apparatus therefor (photographic printing apparatus for making copies G03B27/00) · CPC title

• G03F7/40

  Treatment after imagewise removal, e.g. baking · CPC title

• G03F7/11 Primary

  having cover layers or intermediate layers, e.g. subbing layers {(G03F7/091 - G03F7/093, B41N3/03 take precedence)} · CPC title