Patent ID: 9140982
Filing Date: 2015-09-22
Classification: C09K,G02B,G03F

Abstract:
1. A negative light sensitive resin composition comprising an alkaline soluble resin, which is a terpolymer, or a derivative of the terpolymer, made from the following three monomers: styrene, α-pinene, and a carboxylic acid or anhydride containing an unsaturated double bond; a light sensitive resin containing ethylene unsaturated double bonds, which is in a mass ratio of 0.1 to 1.2:1 to the alkaline soluble resin; a photoinitiator, which is in a mass ratio of 0.0001 to 0.001:1 to the negative light sensitive resin composition; a modifying adjuvant, which is in a mass ratio of 0.001 to 0.01:1 to the solid fraction in the negative light sensitive resin composition; and a solvent, which is in a mass ratio of 2 to 20:1 to the solid fraction in the negative light sensitive resin composition; wherein among the three monomers of the alkaline soluble resin, the carboxylic acid or anhydride containing an unsaturated double bond has a molar ratio of 0.2 to 1:1 to styrene; and α-pinene is in a molar ratio that is higher than 0 but lower than or equal to 1: 1 to styrene.