Patent ID: 11971659
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of forming a pattern in a photoresist, comprising:
forming a photoresist composition layer over a substrate;
selectively exposing the photoresist layer to actinic radiation to form a latent pattern; and
developing the latent pattern by applying a developer to the selectively exposed photoresist layer to form a pattern,
wherein the photoresist composition comprises:
a conjugated resist additive;
a photoactive compound; and
a polymer resin,
wherein the conjugated resist additive is one or more selected from the group consisting of a polyacetylene, a polythiophene, a polyphenylenevinylene, a polyfluorene, a polypryrrole, a polyphenylene, and a polyaniline,
wherein the polythiophene, polyphenylenevinylene, polyfluorene, polypryrrole, polyphenylene, and polyaniline are substituted with one or more substituents selected from the group consisting of an alkyl group, an ether group, an ester group, an alkene group, an aromatic group, an anthracene group,

an alcohol group, an amine group, a carboxylic acid group, and an amide group, and

wherein the conjugated resist additive includes a conjugated moiety attached to either a photobase generator or triphenylsulfonium hydroxide.