Patent ID: 6696112
Filing Date: 2004-02-24
Classification: C09K,G02F,G03F,H01L

Abstract:
A display device comprising a first electrode formed on a substrate, an insulating layer formed on the first electrode in such a way that the first electrode is partially exposed, and a second electrode facing the first electrode, wherein the insulating layer is a positive-type photosensitive polyimide comprising a polymer having structural units represented by the following general formula and a photoacid generator wherein R1 and R2 represent divalent to octavalent organic groups having at least two carbon atoms, and R3 and R4 represent hydrogen, an alkali metal ion, an ammonium ion or an organic group with from 1 to 20 carbons, R3 and R4 may be the same or different, m is an integer in the range 3 to 100,000, and n and o are integers in the range of 0 to 2, p and q are integers in the range of 0 to 4, and n+q>0.