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

Claim 1:
2. A method of manufacturing a semiconductor device, comprising:
forming a material layer over a substrate;
forming a photosensitive layer over the material layer, wherein the photosensitive layer comprises a polymer chain and a sensitizer moiety within the polymer chain, the sensitizer moiety has the following chemical formula:, and wherein M0, M1, and M2 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, A2, and A3 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, R3, and R5 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, Ry, and Rz each comprise oxygen CO-05 alkyl chain, carboxyl group, cycloalkyl group, hydroxylalkyl group, alkoxy group, alkoxyl alkyl group, acetyl group, or acetyl alkyl group,
and w, x, y, and z are numbers in the range: w+x+y+z=1, 0.00x≤0.8, 0.01y≤1.0≤z<0.5 and 0≤w<0.5;
patterning the photosensitive layer; and
after patterning the photosensitive layer, etching the material layer using the photosensitive layer as an etch mask.