Patent ID: 11906900
Assignee: YOUNG CHANG CHEMICAL CO., LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A chemically amplified positive photoresist composition for improving a pattern profile, suitable for use in a photoresist enabling exposure using a light source having a wavelength of 248 nm, comprising, based on a total weight of the composition, 5 to 60 wt % of a polymer resin, 0.1 to 10 wt % of a transmittance-increasing resin additive consisting of Chemical Formula 1 below, 0.05 to 10 wt % of a photoacid generator, 0.01 to 5 wt % of an acid diffusion inhibitor, and a remainder of a solvent:, wherein a, b, c, and d are molar ratios of repeating units constituting a copolymer and are each 1 to 9, in which R1, R2, and R3 are at least one selected from among methyl (R—CH3), ethyl (R—CH2CH3), propyl (R—CH2CH2CH3), butyl (R—CH2CH2CH2CH3) and combinations thereof, and are different from each other, R being a binding site, and
wherein the polymer resin is at least one selected from the group consisting of hydroxyl-group-containing phenol polymer resins represented by Chemical Formula 2 to Chemical Formula 5 below:
[Chemical Formula 2]
resin comprising, , repeating units,
wherein R4 is any one structure selected from among structures represented by Chemical Formula a to Chemical Formula p below, and R is a binding site,, [Chemical Formula 3]
resin comprising, , repeating units,
wherein R5 is identical to R4 and is any one structure selected from among structures represented by Chemical Formula a to Chemical Formula p,
[Chemical Formula 4]
resin comprising, , repeating units,
wherein R6 and R7 are one or more structures selected from among structures represented by Chemical Formula a to Chemical Formula p, and
[Chemical Formula 5]
resin comprising, , repeating units,
wherein R8 and R9 are one or more structures selected from among structures represented by Chemical Formula a to Chemical Formula p.