Patent ID: 8197934

Claim:
A composition for a positive type photoresist comprising: an alkali soluble resin, a photosensitive compound in an amount of 30 to 80 parts by weight based on 100 parts by weight of the alkali soluble resin, a thermo-curable cross linking agent in an amount of 10 to 30 parts by weight based on 100 parts by weight of the alkali soluble resin, a sensitivity enhancer in an amount of 3 to 15 parts by weight based on 100 parts by weight of the alkali soluble resin, and a solvent in an amount of 30 to 120 parts by weight based on 100 parts by weight of the alkali soluble resin, wherein the thermo-curable cross linking agent is a methoxymethylmelamine based resin; the alkali soluble resin is an alkali soluble cresol novolac resin; and the photosensitive compound is a diazide based compound.