Patent ID: 6641984
Filing Date: 2003-11-04
Classification: G03F,G11B,Y10S,Y10T

Abstract:
A method of frame plating comprising a step of forming a frame using a resist and a step of performing plating by using said frame to form a patterned plating layer,said step of forming the frame including: a step of forming a first patterned resist layer by using a first resist containing a material generating an acid; and a step of forming a second patterned resist layer by coating said first patterned resist layer with a second resist capable of entering into a crosslinking reaction in the presence of an acid, generating an acid in the first patterned resist layer, forming a crosslinked film in a portion of the second resist near the boundary that touches the first patterned resist layer, and peeling off non-crosslinked portions of the second resist, wherein said frame is formed using said first patterned resist layer and said second patterned resist layer; and said first resist comprises the following compounds (A) to (D): (A) an organic solvent; (B) a base resin comprising a high molecular compound shown in the following formula (1), the compound having a weight average molecular weight of 10000 to 25000 and a molecular weight distribution of as narrow as 1.05 to 1.25: wherein R1 represents a hydrogen atom or a methyl group, R2 represents a group represented by the following formula (2), R3 represents an acid-unstabilizing group different from R2: wherein R4 and R5 each independently represent a hydrogen atom or a straight chain or branched alkyl group having 1 to 6 carbon atoms, R6 represents a straight chain, branched or cyclic alkyl group having 1 to 10 carbon atoms, or R4 and R5, R4 and R6 or R5 and R6 may form a ring, wherein, in the case of forming a ring, R4, R5 and R6 each independently represent a straight chain or branched alkylene group having 1 to 6 carbon atoms, x and y respectively denote 0 or a positive number provided that x and y are not 0 at the same time, and z denotes a positive number wherein the following relationships are established between x, y and z: 0&lE;x/(x+y+z)&lE;0.5, 0&lE;y/(x+y+z)&lE;0.5 and 0.4&lE;z/(x+y+z)&lE;0.9; (C) an acid generating agent; and (D) an aromatic compound having a group given by the formula â‰¡Câ€”COOH in its molecule.