Patent ID: 6342332
Filing Date: 2002-01-29
Classification: G03F,H05K

Abstract:
A negative resist material comprising:a) a binder comprising a polymer selected from the group consisting of acrylic polymers and methacrylic polymers; b) a monomer having from two to four ethylenic double bonds; c) a photo initiator; and d) a solvent comprising a compound selected from the group consisting of 2-methoxybutanol, propylene glycol butyl ether, ethylene glycol ethyl ether acetate, propylene glycol propyl ether, propylene glycol tertiary butyl ether, ethylene glycol ethyl ether, dipropylene glycol methyl ether and propylene glycol methyl ether acetate; Wherein the photoinitiator is present in an amount of greater than 10% by weight of the material without the solvent and wherein the binder has a Tg of 110Â° C. or greater.