IP Library Granted Patent US 10,113,030
Granted Patent B2
US 10,113,030 · App. 15/478,317 · Granted Oct 30, 2018

Resist material and pattern forming method using same

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Quick Facts
Patent No.
US 10,113,030
App. No.
15/478,317
Granted
Oct 30, 2018
Kind
B2
Abstract

In one embodiment, a resist material to be used in an imprint process includes a diluent monomer having a hydroxyl group and at least one functional group selected from a vinyl ether group, an epoxy group and an oxetanyl group. The material further includes a dendrimer having at least two reactive groups for photo-cationic polymerization. The material further includes a photo-acid generator as a polymerization initiator.

Claims (12)

1. A pattern forming method comprising:

providing, on a substrate, a resist material which comprises a diluent monomer having a hydroxyl group and at least one functional group selected from a vinyl ether group, an epoxy group and an oxetanyl group, a dendrimer with a globular structure having at least two reactive groups for photo-cationic polymerization, and a photo-acid generator as a polymerization initiator;

imprinting a template having concave-convex shape patterns against the resist material;

curing the resist material; and

releasing the template from the cured resist material.

2. The method of claim 1 , wherein the resist material comprises:

50% or more and 90% or less by weight of the diluent monomer;

5% or more and 50% or less by weight of the dendrimer; and

0.3% or more and 10% or less by weight of the polymerization initiator.

3. The method of claim 1 , wherein the dendrimer has a vinyl ether group, an epoxy group or an oxetanyl group as the reactive groups for photo-cationic polymerization.

4. The method of claim 1 , wherein the resist material is provided on an adhesion film on the substrate.

5. The method of claim 1 , wherein the resist material is cured by irradiating the resist material with an ultraviolet ray.

Assignments (5)
MERGER Recorded Jan 22, 2021
From: TOSHIBA MEMORY CORPORATION
To: K.K. PANGEA
Reel/Frame 055659/0471 →
CHANGE OF NAME AND ADDRESS Recorded Jan 22, 2021
From: TOSHIBA MEMORY CORPORATION
To: KIOXIA CORPORATION
Reel/Frame 055669/0001 →
CHANGE OF NAME AND ADDRESS Recorded Jan 22, 2021
From: K.K. PANGEA
To: TOSHIBA MEMORY CORPORATION
Reel/Frame 055669/0401 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE POSTAL CODE PREVIOUSLY RECORDED ON REEL 043027 FRAME 0072. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Sep 1, 2017
From: KABUSHIKI KAISHA TOSHIBA
To: TOSHIBA MEMORY CORPORATION
Reel/Frame 043747/0273 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 28, 2017
From: KABUSHIKI KAISHA TOSHIBA
To: TOSHIBA MEMORY CORPORATION
Reel/Frame 043027/0072 →