Resin composition and display device using the same
AssigneeToray Industries, Inc.
InventorsKazuto Miyoshi, Mika Koshino, Masao Tomikawa
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Abstract
The resin composition of the present invention is a resin composition characterized by including (a) a polyimide, a polybenzoxazole, a polyimide precursor or a polybenzoxazole precursor, (b) 1,5-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 1,7-dihydroxynaphthalene, or 2,3-dihydroxynaphthalene, and (c) a thermal cross-linking agent having a specific structure. By the use of the resin composition of the present invention, it is possible to reduce the transmittance in the visible region of a cured film while maintaining the transmittance of a resin film before curing.
Claims4
A positive type resin composition comprising
- (a) a polyimide, a polybenzoxazole, or a resin that has an amide bond in its main chain and can form said polyimide or polybenzoxazole by dehydration-cyclization effected by heat treatment or by chemical treatment,
- (b) 1,5-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 1,7-dihydroxynaphthalene, or 2,3-dihydroxynaphthalene,
- (c) a thermal cross-linking agent having a structure represented by the following formula (1) or a thermal cross-linking agent having a group represented by the following formula (2):
- wherein in formula (1), R represents a linking group having 2 to 4 valencies, R1 represents a monovalent organic group having 1 to 20 carbon atoms, Cl, Br, I, or F, R2 and R3 each represents CH2OR5 (R5 is a hydrogen atom or a monovalent hydrocarbon group having 1 to 6 carbon atoms), R4 represents a hydrogen atom, a methyl group or an ethyl group, s represents an integer of 0 to 2 and u represents an integer of 2 to 4;
- —N(CH2OR6)t(H)v (2)
- wherein in formula (2), R6 represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 6 carbon atoms, t is 1 or 2 and v is 0 or 1, provided that t+v is 1 or 2, and
- (d) a photo acid generator.
Dependencies are inferred from the claim text.