Light absorption filter, optical filter, self-emissive display device, organic electroluminescent display device and liquid crystal display device, and method for manufacturing an optical filter.

Abstract

A light-absorbing filter which comprises a resin, a dye having a main-absorption wavelength range at wavelengths of 400-700 nm, and a compound that generates a radical upon ultraviolet irradiation, wherein the resin is constituted from a polymer having partial structures respectively having a high affinity and a low affinity for both the dye and the compound that generates a radical upon ultraviolet irradiation or a light-absorbing filter which comprises a dye having a main-absorption wavelength range at wavelengths of 400-700 nm and a resin constituted from a polymer including a partial structure that generates a radical upon ultraviolet irradiation; an optical filter comprising these light-absorbing filters; a self-luminescent display device; an organic electroluminescent display device; a liquid-crystal display device; and a method for producing the optical filter.

Claims

1. resin and Dyes having a main absorption wavelength band in the range of 400-700 nm, A light-absorbing filter containing a compound that generates radicals upon ultraviolet irradiation, The resin is composed of a polymer having both a substructure with high affinity and a substructure with respect to the dye and the compound that generates radicals upon ultraviolet irradiation. Light-absorbing filter.

2. The light-absorbing filter according to claim 1, wherein the dye comprises a squalin-based dye represented by the following general formula (1). 【Chemistry 1】 In the above formula, A and B each independently represent an optionally substituted aryl group, an optionally substituted heterocyclic group, or -CH=G. G represents an optionally substituted heterocyclic group.

3. The light-absorbing filter according to claim 1 or 2, wherein the polymer constituting the resin is a block copolymer.

4. The light-absorbing filter according to any one of claims 1 to 3, wherein the high-affinity substructure includes a polystyrene structure.

5. The light-absorbing filter according to any one of claims 1 to 4, wherein the low-affinity substructure includes a structure in which polydiene is hydrogenated.

6. A light-absorbing filter comprising a dye having a main absorption wavelength band in the range of 400 to 700 nm and a resin composed of a polymer containing a substructure that generates radicals upon ultraviolet irradiation, wherein the dye contains a dye with an electron-donating quenching agent.

7. The light-absorbing filter according to claim 6, wherein the electron-donating quenching agent-containing dye includes a squalin-based dye represented by the following general formula (1A). 【Chemistry 2】 In the above formula, A and B each independently represent an optionally substituted aryl group, an optionally substituted heterocyclic group, or -CH=G. G represents an optionally substituted heterocyclic group. However, at least one of A and B includes an electron-donating quenching agent portion.

8. The light-absorbing filter according to claim 6 or 7, wherein the polymer is a (meth)acrylic polymer having aromatic rings in its side chains.

9. A light-absorbing filter according to any one of claims 1 to 8, wherein in the light-absorbing filter according to any one of claims 1 to 5, the compound that generates radicals by ultraviolet irradiation is a compound that generates radicals by intramolecular cleavage, and in the light-absorbing filter according to any one of claims 6 to 8, the substructure that generates radicals by ultraviolet irradiation is a substructure that generates radicals by intramolecular cleavage.

10. A light-absorbing filter according to any one of claims 1 to 7, wherein in the light-absorbing filter according to any one of claims 1 to 5, the compound that generates radicals upon ultraviolet irradiation is a compound that generates radicals by abstracting a hydrogen atom from a compound present in the vicinity of the compound, and in the light-absorbing filter according to claim 6 or 7, the substructure that generates radicals upon ultraviolet irradiation is a substructure that generates radicals by abstracting a hydrogen atom from a compound present in the vicinity of the substructure.

11. The light-absorbing filter according to claim 10, wherein the compound that abstracts a hydrogen atom from a nearby compound to generate a radical is a benzophenone compound substituted with an alkoxy group, and the substructure that abstracts a hydrogen atom from a nearby compound to generate a radical is a substructure derived from a benzophenone compound substituted with an alkoxy group.

12. The light-absorbing filter according to any one of claims 1 to 11, wherein the dye undergoes a chemical change and becomes discolored upon irradiation with light.

13. An optical filter obtained by mask exposure of a light-absorbing filter according to any one of claims 1 to 12 by ultraviolet irradiation.

14. A self-emissive display device, an organic electroluminescent display device, or a liquid crystal display device, comprising the optical filter described in claim 13.

15. The self-emissive display device, organic electroluminescent display device, or liquid crystal display device according to claim 14, wherein the optical filter has a layer on the viewer side that inhibits light absorption, the layer having a compound that generates radicals upon ultraviolet irradiation, or a substructure that generates radicals upon ultraviolet irradiation.

16. A method for manufacturing an optical filter, comprising the step of irradiating a light-absorbing filter according to any one of claims 1 to 12 with ultraviolet light to perform mask exposure.

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