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

Claim 0:
1. A method of manufacturing a semiconductor device, comprising:
forming a photoresist layer over a substrate;
selectively exposing the photoresist layer to an EUV radiation; and
developing the selectively exposed photoresist layer,
wherein the photoresist layer has a composition comprising:
a polymer; and
a photoactive compound that contains:
a sensitizer component, wherein the sensitizer component has the following chemical formula:, and 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, 0.01y≤1, and 0≤z<0.5; and
an acid generator or a base molecular bonding the sensitizer component, wherein the photoactive compound is within a polymer backbone.