Patent ID: 8044441

Claim:
An electrode patterning layer for forming an electrode pattern prepared by irradiating a layer comprising a polyamic acid having repeating units represented by the following formula (1) or a polyimide obtained by cyclodehydration of the polyamic acid, with ultraviolet ray in a pattern shape: wherein A is a tetravalent organic group, B is a bivalent organic group, each of A and B can be a combination of different groups, and n is a positive integer, provided that at least one group of A is a tetravalent organic group having an alicyclic structure, wherein from 10 to 100 mol % of B in the formula (1) is at least one member selected from the structures represented by the following formulae (6) and (7): wherein each X independently is a single bond, an ether bond, an ester bond, a thioether bond, an amide bond, a C 1-5 alkylene group which may have a branched structure, or a C 1-5 alkylenedioxo group which may have a branched structure, R 5 is an alkyl group having at most 2 carbon atoms, R 6 is a monovalent organic group having a long chain alkyl group or a fluorinated long chain alkyl group, having at least 6 carbon atoms, and j is 0 or 1.