Patent ID: 9005876
Filing Date: 2015-04-14
Classification: C08G,C09D,G03F,H01L

Abstract:
1. A method for producing a through electrode for electrically connecting an integrated circuit provided on a surface of a semiconductor wafer and a connecting terminal provided on a back surface of the semiconductor wafer, comprising: providing the semiconductor wafer having the integrated circuit provided on the surface of the semiconductor wafer and a hole provided in the semiconductor wafer along a thickness direction of the semiconductor wafer, at least a portion of a back surface of an electrode of the integrated circuit being exposed through the hole; spraying a positive photosensitive resin composition to form a coating film so that the coating film covers an inner surface of the hole, the positive photosensitive resin composition having a viscosity of 0.5 to 200 cP and including an alkali-soluble resin, a compound which generates an acid when exposed to light, and a solvent; and exposing and developing at least a portion of the coating film to form a coating film pattern.