Patent ID: 6709804
Filing Date: 2004-03-23
Classification: B82Y,G03F,H05K,Y10S

Abstract:
A printed wiring board or a substrate for disposing semiconductor chips which is prepared by coating a printed wiring substrate with a photosensitive resin composition and forming fine patterns by exposure of the composition to radiation, wherein the photosensitive resin composition comprises an oxygen sensitizer and a cis-diene-substituted polyamic acid or polyimide having a structural unit of a formula selected from the group consisting of a formula (1), a formula (2), a formula (3), a formula (4) and a formula (5), wherein the formula (1) is as follows: wherein at least one of R1, R2, R3 and R4 represents a monovalent organic group having a cis-diene structure; and the rest of R1, R2, R3 and R4 each independently represents a hydrogen atom, a hydroxyl group, a carboxyl group, an alkyl group having 1 to 20 carbon atoms or an alkoxy group having 1 to 20 carbon atoms;wherein the formula (2) is as follows: wherein at least one of R5, R6, R7, R8, R9, R10, R11 and R12 represents a monovalent organic group having a cis-diene-structure; and the rest of R5, R6, R7, R8, R9, R10, R11 and R12 each independently represents a hydrogen atom, a hydroxyl group, a carboxyl group, an alkyl group having 1 to 20 carbon atoms or an alkoxy group having 1 to 20 carbon atoms; wherein the formula (3) is as follows: wherein at least one of R13, R14, R15, R16, R17, R18, R19 and R20 represents a monovalent organic group having a cis-diene-structure; and the rest of R13, R14, R15, R16, R17, R18, R19 and R20 each independently represents a hydrogen atom, a hydroxyl group, a carboxyl group, an alkyl group having 1 to 20 carbon atoms or an alkoxy group having 1 to 20 carbon atoms; and R21 represents oxygen, sulfur, an alkylene group having 1 to 4 carbon atoms, an alkylidene group having 1 to 4 carbon atoms or an alkyleneoxy group having 1 to 4 carbon atoms; wherein the formula (4) is as follows: wherein at least one of R22, R23, R24 and R25 represents a monovalent organic group having a cis-diene-structure; the rest of R22, R23, R24 and R25 each independently represents a hydrogen atom, a hydroxyl group, a carboxyl group, an alkyl group having 1 to 20 carbon atoms or an alkoxy group having 1 to 20 carbon atoms; X1 and X2 each independently represents oxygen, sulfur, an alkylene group having 1 to 4 carbon atoms, an alkylidene group having 1 to 4 carbon atoms or an alkyleneoxy group having 1 to 4 carbon atoms; Ar1 and Ar2 each independently represents a divalent aromatic group; and l1, 12, m1 and m2 represents 1 when 12 represents 1; wherein the formula (5) is as follows: wherein at least one of R26, R27, R28, R29, R30, R31, R32 and R33 represents a monovalent organic group having a cis-diene-structure; the rest of R26, R27, R28, R29, R30, R31, R32 and R33 each independently represents a hydrogen atom, a hydroxyl group, a carboxyl group, an alkyl group having 1 to 20 carbon atoms or an alkoxy group having 1 to 20 carbon atoms; Y1 represents oxygen, sulfur, an optionally substituted alkylene group having 1 to 4 carbon atoms, an optionally substituted alkylidene group having 1 to 4 carbon atoms or an optionally substituted alkyleneoxy group having 1 to 4 carbon atoms; and n1 represents 0 or 1.