Patent ID: 8481351

Claim:
A method for manufacturing an active matrix substrate, the active matrix substrate including a data signal line, a scanning signal line, a transistor connected with the data signal line and the scanning signal line, and a pixel electrode connected with the data signal line via the transistor, said method comprising the steps of: (i) selectively forming a pattern of a laminated structure, by forming the laminated structure on a substrate, by forming a first photosensitive resin pattern on the laminated structure, and by selectively forming the pattern of the laminated structure by use of the first photosensitive resin pattern, the laminated structure including (a) a metal layer, which is a material of the scanning signal line, (b) a gate insulative layer, and (c) a semiconductor layer, which is a material of the transistor; (ii) fluorinating a surface of the first photosensitive resin pattern by dry etching with a fluorine gas; (iii) applying a transparent insulative resin of coating type onto the substrate so that the transparent insulative resin fills a space in the pattern of the laminated structure; and (iv) removing the first photosensitive resin pattern which has been fluorinated.