Patent ID: 7442488

Claim:
A positive type photosensitive paste composition for a plasma display panel (PDP) electrode having a trapezoidal shape in which an area of a lower portion which is in contact with a substrate is greater than that of an upper portion which is out of contact with a substrate, comprising: a conductive powder, an inorganic binder and a photosensitive vehicle, wherein the photosensitive vehicle comprises an organic binder, a photoacid generator, a solvent and one or more additives, wherein the organic binder comprises a copolymer comprising recurrent units of the formula (1): wherein R 1 is H or CH 3 , R 2 is a saturated or unsaturated C 1 -C 6 alkyl group or a C 1 -C 6 group containing an ether group, a carbonyl group or an ester group, R 3 is a group having a hydroxyl group, R 4 is hydrogen or a group having a carboxylic group, preferably a C 1 -C 6 carboxylalkyl group, R 5 is carboxy protecting group, and each of a, b, c and d is a molar ratio (%) of each monomer, a is 10 to 60, b is 0 to 30, c is 0 to 10, d is 10 to 60, and a+b+c+d=100; wherein the photoacid generator is at least one selected from the group consisting of diphenyliodonium hexafluorophosphate, diphenyliodonium hexafluoroarsenate, diphenyliodonium hexafluoroantimonate, diphenylparamethoxyphenyl triflate, diphenylparatoluethyl triflate, diphenylparaisobutylphenyl triflate, diphenylpara-t-butylphenyl triflate, triphenylsulfonium hexafluorophosphate, triphenylsulfonium hexafluoroarsenate, triphenylsulfonium hexafluoroantimonate, triphenylsulfonium triflate and dibutylnaphthylsulfonium triflate; and wherein an amount of the photoacid generator is from about 0.1 to about 20 parts by weight based on 100 parts by weight of the organic binder.