Formation of etch-resistant resists through preferential permeation
First Claim
Patent Images
1. A method of creating etch-resistant polymeric films for use in the production of micron and submicron dimension patterns and fine lines, comprising:
- (a) applying a layer of polymeric resist material to a substrate;
(b) exposing said layer of polymeric resist material to at least one kind of patterned radiation capable of altering the permeability of said polymeric resist material; and
(c) preferentially permeating/diffusing an organometallic material into the surface of said polymeric resist material, to provide each resistance within the portion of said polymeric resist material within which significant permeation of said organometallic material occurs.
1 Assignment
0 Petitions
Accused Products
Abstract
A method is provided for creation of oxygen etch-resistant polymeric films for use in the production of micron and submicron dimension patterns and fine lines. These etch-resistant polymeric films find use in fabrication of complex structures such as those in electronic devices and magnetic thin film heads. The etch resistance is achieved by incorporation of a protective-oxide-forming metal into a polymeric material using preferential permeation of organometallic materials into the polymeric material.
-
Citations
30 Claims
-
1. A method of creating etch-resistant polymeric films for use in the production of micron and submicron dimension patterns and fine lines, comprising:
-
(a) applying a layer of polymeric resist material to a substrate; (b) exposing said layer of polymeric resist material to at least one kind of patterned radiation capable of altering the permeability of said polymeric resist material; and (c) preferentially permeating/diffusing an organometallic material into the surface of said polymeric resist material, to provide each resistance within the portion of said polymeric resist material within which significant permeation of said organometallic material occurs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method of creating positive tone etch-resistant polymeric films for use in the production of micron and submicron dimension patterns and fine lines, comprising:
-
(a) applying a layer of polymeric resist material to a substrate, wherein said polymeric resist material comprises a photocrosslinkable polymer; (b) exposing said layer of polymeric resist material to patterned radiation, wherein said radiation induces crosslinking of said polymeric material as the dominant reaction; and (c) preferentially permeating/diffusing an organometallic material into the surface of said polymeric resist material, to provide an etch-resistant latent image within said polymeric resist material, wherein said etch-resistance occurs within the portion of said polymeric resist material which has not been irradiated. - View Dependent Claims (10, 11, 12)
-
-
13. A method of creating positive tone etch-resistant polymeric films for use in the production of micron and submicron dimension patterns and fine lines, comprising:
-
(a) applying a layer of polymeric resist material to a substrate, wherein said polymeric resist material is a combination of a photoactive compound and at least one polymer; (b) exposing said layer of polymeric resist material to patterned radiation, wherein said radiation induces crosslinking of said polymeric resist material as the dominant reaction; and (c) preferentially permeating an organometallic material into the surface of said polymeric resist material, to provide an etch-resistant latent image within said polymeric resist material, wherein said etch-resistance occurs within the portion of said polymeric resist material which has not been irradiated. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
-
21. A method of creating negative tone etch-resistant polymeric films for use in the production of micron and submicron dimension patterns and fine lines, comprising:
-
(a) applying a layer of polymeric resist material to a substrate, wherein said polymeric resist material is comprised of at least one photodegradable polymer which undergoes chain scission or fragmentation upon irradiation; (b) exposing said layer of polymeric resist material to patterned radiation, wherein said radiation induces chain scission or fragmentation of said at least one photodegradable polymer as the dominant reaction; and (c) preferentially permeating an organometallic material into the surface of said polymeric resist material, to provide an etch-resistant latent image within said polymeric resist material, wherein said etch-resistance occurs in the irradiated areas of said polymeric resist. - View Dependent Claims (22, 23, 24, 30)
-
-
25. A method of creating negative tone etch-resistant polymeric films for use in the production of micron and submicron dimension patterns and fine lines, comprising:
-
(a) applying a layer of polymeric resist material to a substrate, wherein said polymeric resist material is a combination of a photoactive compound and at least one polymer, and wherein said at least one polymer may or may not be photodegradable. (b) exposing said layer of polymeric resist material to patterned radiation, wherein said radiation induces chain scission or fragmentation of said photoactive compound, and chain scission or fragmentation of any photodegradable polymer present; and (c) preferentially permeating an organometallic material into the surface of said polymeric resist material, to provide an etch resistant latent image within said polymeric resist material, wherein said etch-resistance occurs within the portion of said polymeric resist material irradiated. - View Dependent Claims (26, 27, 28, 29)
-
Specification