# US 2014/0191222 A1 · Resin composition and display device using the same

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- Number: US 2014/0191222 A1
- Document ID: US20140191222A1
- Status: Published application
- Kind: A1
- Application number: 14/202,595
- Filed: 2014-03-10
- Published: 2014-07-10
- Earliest claimed: 2009-01-29
- Assignees: Toray Industries, Inc.
- Applicants: Toray Industries, Inc.
- Inventors: Kazuto MIYOSHI; Mika KOSHINO; Masao TOMIKAWA
- Web page: https://patentgrep.com/patent/US20140191222A1

## CPC

- C08G 73/10: Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G 73/22: Polybenzoxazoles
- C08K 5/13: Phenols; Phenolates
- C08K 5/17: Amines; Quaternary ammonium compounds
- C09K 11/06: containing organic luminescent materials
- G02B 1/04: made of organic materials, e.g. plastics (G02B1/08 takes precedence)
- G03F 7/037: the binders being polyamides or polyimides
- G03F 7/039: Macromolecular compounds which are photodegradable, e.g. positive electron resists (G03F7/075 takes precedence; macromolecular quinonediazides G03F7/023)
- H05B 33/10: Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
- H05B 33/14: characterised by the chemical or physical composition or the arrangement of the electroluminescent material {, or by the simultaneous addition of the electroluminescent material in or onto the light source}
- H10K 59/38: comprising colour filters or colour changing media [CCM]
- C09K 2211/1007: Non-condensed systems
- C09K 2211/1014: bridged by heteroatoms, e.g. N, P, Si or B
- C09K 2211/1044: containing two nitrogen atoms as heteroatoms
- C09K 2211/1059: containing three nitrogen atoms as heteroatoms
- C09K 2323/00: Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K 2323/025: Polyamide
- C09K 2323/027: Polyimide
- C09K 2323/035: Ester polymer, e.g. polycarbonate, polyacrylate or polyester
- C09K 2323/061: Inorganic, e.g. ceramic, metallic or glass
- G03F 7/0007: {Filters, e.g. additive colour filters; Components for display devices}
- G03F 7/40: Treatment after imagewise removal, e.g. baking
- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/124: Insulating layers formed between TFT elements and OLED elements
- H10K 59/8792: {comprising light absorbing layers, e.g. black layers}
- H10W 70/60: Insulating or insulated package substrates; Interposers; Redistribution layers (leadframes H10W70/40)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G03F: PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR; (phototypographic composing devices B41B; photosensitive materials or processes for photographic purposes G03C; electrophotography, sensitive layers or processes therefor G03G)
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## 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.

## Claims

### Claim 1

A 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 polybensoxazole 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, and (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 represent 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.

### Claim 2 (depends on 1)

The resin composition according to claim 1, wherein the change in transmission of light having a wavelength of 450 nm for a prebaked film and a cured film each having a thickness of 3.0 μm of said resin composition is 20% or more.

### Claim 3 (depends on 1)

A display device comprising a substrate in which a thin film transistor has been formed, a planarization film and/or a dielectric layer and a display element in this order, wherein said planarization film and dielectric layer are obtained by curing the resin composition according to claim 1.

### Claim 4 (depends on 3)

The display device according to claim 3, wherein the display element is an organic electroluminescent element.