Patent ID: 6927012

Claim:
A polyamic acid resin composition for the formation of a bank, which comprises: a polyamic acid having repeating units represented by formula wherein R 1 is a tetravalent organic group derived from a tetracarboxylic acid or a derivative thereof, R 2 is a bivalent organic group derived from a diamine, and k is an integer[)], and having a reduced viscosity ranging from 0.05 to 5.0 dug [(] as determined in N-methylpyrrolidone at a temperature of 30° C., at a concentration of 0.5 gl/g[)]; and a polyamic acid (b) having repeating units represented by formula wherein R 3 is a tetravalent organic group derived from a-tetracarboxylic acid compound or a derivative thereof, R 4 is a bivalent organic group derived from a diamine compound, from 1 to 100 mol % of R 4 has one or more fluorine-containing alkyl groups with a carbon number of at least 2, and 1 is an integer[)], and having a reduced viscosity ranging from 0.05 to 5.0 dl/g [(] in N-methylpyrrolidone at a temperature of 30° C., at a concentration of 0.5 g/dl[)]; wherein the content of the polyamic acid (b) ranges from 0.1 to 30 wt % based on the total amount of the polyamic acid (a) and the polyamic acid (b).