Patent ID: 8298754
Filing Date: 2012-10-30
Classification: C04B,G03F,H01L,H05K

Abstract:
1. A method for forming a thick film pattern, comprising the steps of: applying to a support a photosensitive paste including a conductive powder, a photosensitive monomer, a photopolymerization initiator, and a polymer, wherein a ratio of the photosensitive monomer to a total amount of the photosensitive monomer and the polymer satisfies the condition represented by the following Formula: photosensitive monomer/(photosensitive monomer+polymer)≧0.90, so as to form a photosensitive paste film; subjecting the photosensitive paste film to an exposure treatment; and developing the photosensitive paste film subjected to the exposure treatment so as to form a thick film pattern; wherein the contents of the conductive powder, the photosensitive monomer, and the photopolymerization initiator are within the following ranges: conductive powder: about 60 to about 90 percent by weight of the photosensitive paste; photosensitive monomer: about 5 to about 39 percent by weight of the photosensitive paste; photopolymerization initiator: about 1 to about 10 percent by weight of the photosensitive paste; and the photosensetive paste includes a photosensitive monomer having a double bond concentration within the range of about 8 mmol/g to about 11 mmol/g.