| 摘要 |
A photosensitive resin composition comprising an alkali-soluble resin, a quinonediazide-type photosensitive compound and a solvent, as the main components, wherein the alkali-soluble resin is a polycondensation product of +E,crc/1/ at least one phenolic compound of the following formula (A) and +E,crc/2/ (a) formaldehyde and (b) at least one ketone or aldehyde of the following formula (B), and the mixing ratio of the formaldehyde (a) to the ketone or aldehyde (b) is within a range of from 1/99 to 99/1 in terms of the molar ratio of (a)/(b): roup of the formula R2,OR3,COOR4 or CH2COOR5,wherein R2 is a C1-4 alkyl group, each of R3,R4 and R5 which are independent of one another, is a hydrogen atom or a C1-4 alkyl group, n is an integer of from 0 to 3, provided that when n is 2 or 3, a plurality of R1 may be the same or different, and each of R6 and R7 which are independent of each other, is a hydrogen atom, a C1-4 lower alkyl group, an aryl group or an aralkyl group, provided that R6 and R7 are not simultaneously hydrogen atoms.
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