Patent ID: 7799509

Claim:
A method of manufacturing a common electrode substrate, the method comprising: forming a light-blocking layer on a base substrate; forming a color filter layer covering a portion of the light-blocking layer on the substrate; forming an insulating layer covering the light-blocking layer and the color filter layer; forming a common electrode layer having a boundary portion on the insulating layer; coating a photosensitive resin composition on the common electrode layer to form a photoresist film, the photosensitive resin composition comprising: about 100 parts by weight of an acryl-based copolymer prepared by copolymerizing i) about 5 to about 60 percent by weight of an isobonyl carboxylate-based compound comprising a compound represented by the chemical formula wherein X represents an alkenyl group including C 1 -C 10 , and R 1 , R 2 , R 3 and R 4 represent hydrogen atoms or alkyl groups including C 1 -C 10 , ii) about 10 to about 30 percent by weight of an unsaturated compound carrying an epoxy group, iii) about 20 to about 40 percent by weight of an olefin-based unsaturated compound, and iv) about 10 to about 40 percent by weight of one selected from the group consisting of unsaturated carboxylic acid, unsaturated carboxylic acid anhydride, and a mixture of the unsaturated carboxylic acid and unsaturated carboxylic acid anhydride; and about 5 to about 100 parts by weight of a 1,2-quinonediazide compound; exposing the photoresist film to a light; and developing the photoresist film exposed to the light to form a tilted layer having a tapered structure.