Patent ID: 11914301
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 7:
8. A method of manufacturing a semiconductor device, comprising:
forming a material layer on a substrate;
spin-coating a photoresist layer on the material layer, wherein the photoresist layer comprises a polymer, the polymer comprises a photosensitive part in a polymer backbone, the photosensitive part has a chemical formula:, wherein M0 and M1 each comprise hydrogen or C1-C8 alkyl group, cycloalkyl group, hydroxylalkyl group, alkoxy group, alkoxyl alkyl group, acetyl group, acetyl alkyl group, carboxyl group, alky carboxyl group, cycloalkyl carboxyl group, C1-C8 saturated or unsaturated hydrocarbon ring, or C1-C8 heterocyclic group being 2-D ring or 3-D crisscross structure,
A1 and A2 each comprise oxygen, C0-C5 alkyl chain cycloalkyl group, hydroxylalkyl group, alkoxy group, alkoxyl alkyl group, acetyl group, acetyl alkyl group, carboxyl group, alky carboxyl group, or cycloalkyl carboxyl group,
R1 is an acid labile group (ALG) comprising C4-C20 alkyl group, cycloalkyl group, hydroxylalkyl group, alkoxy group, alkoxyl alkyl group, acetyl group, acetyl alkyl group, carboxyl group, alky carboxyl group, cycloalkyl carboxyl group, C4-C20 saturated or unsaturated hydrocarbon ring, or C4-C20 heterocyclic group being 2-D ring or 3-D crisscross structure,
R2 and R3 each comprise hydrogen, fluorine, C1-C12 alkyl group, halogen substituted group cycloalkyl group, hydroxylalkyl group, alkoxy group, alkoxyl alkyl group, acetyl group, acetyl alkyl group, carboxyl group, alky carboxyl group, cycloalkyl carboxyl group, C1-C12 saturated or unsaturated hydrocarbon ring, or C1-C12 heterocyclic group being 2-D ring or 3-D crisscross structure,
R4 comprises hydroxyl group, C1-C5 alkyl group, cycloalkyl group, hydroxylalkyl group, alkoxy group, alkoxyl alkyl group, acetyl group, acetyl alkyl group, carboxyl group, alky carboxyl group, cycloalkyl carboxyl group, C1-C5 saturated or unsaturated hydrocarbon ring, or C1-C5 heterocyclic group,
X− is an anion comprising sulfonate derivatives, carboxylic acid derivatives, hydroxyl group, fluorine, chlorine, bromine, or iodine,
Rx and Ry each comprise oxygen C0-C5 alkyl chain, carboxyl group, cycloalkyl group, hydroxylalkyl group, alkoxy group, alkoxyl alkyl group, acetyl group, or acetyl alkyl group,
and x, y, and z are numbers in the range: x+y+z=1, 0.00x≤0.8, 0.01≤y≤1, and 0≤z<0.5;
exposing the photoresist layer to cleave a backbone of the polymer;
developing the photoresist layer; and
etching the material layer using the photoresist layer as an etch mask.