Color change member, light emitting device, display device and electronic apparatus
View Patent ↗A color change member includes: a color change layer that has a light incident surface, a light emission surface, and a side surface; a first protective layer that is provided on the light incident surface of the color change layer; and a second protective layer that is provided on at least a part of the side surface of the color change layer.
1. A light emitting device comprising:
a light emitting element that emits light;
a color change member that is provided on a light extraction side of the light emitting element;
a sealing substrate that covers the light emitting element with the color change member being provided between the light emitting element and the sealing substrate; and
a sealing resin layer provided between the sealing substrate and the color change member, wherein
the sealing substrate and the sealing resin layer each have a planar structure including parallel upper and lower surfaces that extend continuously across a light emission side of the color change member, and
the color change member includes
a color change layer that has a light incident surface, a light emission surface, and a side surface,
a first protective layer that is provided on the light incident surface of the color change layer, and
a second protective layer that is provided on at least a part of the side surface of the color change layer, wherein
the first protective layer and the second protective layer are integrally formed,
the color change layer includes a plurality of color filters each having a light incident surface, and
the integrally formed first protective layer and second protective layer continuously extends between a light emission side of the light emitting element to the light incident surface of the plurality of color filters.
2. The light emitting device according to claim 1 , wherein the light emitting element is configured to emit light having a white color.
3. The light emitting device according to claim 1 , wherein the plurality of color filters each have a light emission surface and a side surface, the second protective layer is provided on at least a part of the side surface of each of the color filters, the side surface of each color filter has a tapered shape, and an angle of the tapered shape is such that light traveling obliquely from the light incident surface and impinging on the side surface is extracted via the light emission surface.
4. The light emitting device according to claim 1 , wherein the second protective layer includes a metal film.
5. The light emitting device according to claim 1 , wherein the second protective layer includes a black resin film.
6. The light emitting device according to claim 1 , further comprising an antireflection film that is provided on at least either side of the light incident surface and the light emission surface of the color change layer.
7. The light emitting device according to claim 1 , wherein the color change layer is configured to change a color of light by light absorption.
8. The light emitting device according to claim 1 , wherein
a light incident side of the sealing substrate is in direct contact with a light emission side of the sealing resin layer, and
a light incident side of the sealing resin layer is in direct contact with a light emission side of the color change member.
9. The light emitting device according to claim 1 , wherein the first protective layer includes an aluminum oxide film having a thickness of 100 nm or less.
10. The light emitting device according to claim 9 , wherein the first protective layer is formed by an atomic layer deposition method.
11. The light emitting device according to claim 1 , further comprising a third protective layer that is provided on at least a part of the light emission surface of the color change layer.
12. The light emitting layer according to claim 11 , wherein the first protective layer and the second protective layer include a first transparent inorganic base film and the third protective layer includes a second transparent inorganic base film.
13. The light emitting device according to claim 12 , wherein the first protective layer, the second protective layer, and the third protective layer respectively include at least one of a silicon nitride film, a silicon oxynitride film, and an aluminum oxide film.
14. The light emitting device according to claim 11 , wherein the sealing substrate, the sealing resin layer, and the third protective layer each have a planar structure including parallel upper and lower surfaces that extend continuously across a light emission side of the color change member.
15. The light emitting device according to claim 14 , wherein
a light incident side of the sealing substrate is in direct contact with a light emission side of the sealing resin layer,
a light incident side of the sealing resin layer is in direct contact with a light emission side of the third protective layer, and
a light incident side of the third protective layer is in direct contact with the light emission surface of the color change layer.
16. A display device comprising:
a light control element that controls transmission or reflection of light or a light emitting element that emits light;
a color change member that is provided on a light extraction side of the light control element or the light emitting element;
a sealing substrate that covers the light emitting element with the color change member being provided between the light emitting element and the sealing substrate; and
a sealing resin layer provided between the sealing substrate and the color change member, wherein
the sealing substrate and the sealing resin layer each have a planar structure including parallel upper and lower surfaces that extend continuously across a light emission side of the color change member, and
the color change member includes
a color change layer that has a light incident surface, a light emission surface, and a side surface,
a first protective layer that is provided on the light incident surface of the color change layer, and
a second protective layer that is provided on at least a part of the side surface of the color change layer, wherein
the first protective layer and the second protective layer are integrally formed,
the color change layer includes a plurality of color filters each having a light incident surface, and
the integrally formed first protective layer and second protective layer continuously extends between a light emission side of the light emitting element to the light incident surface of the plurality of color filters.
17. The display device according to claim 16 , wherein the light emitting element is provided along the light incident surface and the side surface of the color change layer.
18. An electronic apparatus comprising
a display device including
a light control element that controls transmission or reflection of light or a light emitting element that emits light,
a color change member that is provided on a light extraction side of the light control element or the light emitting element,
a sealing substrate that covers the light emitting element with the color change member being provided between the light emitting element and the sealing substrate, and
a sealing resin layer provided between the sealing substrate and the color change member, wherein
the sealing substrate and the sealing resin layer each have a planar structure including parallel upper and lower surfaces that extend continuously across a light emission side of the color change member, and
the color change member includes
a color change layer that has a light incident surface, a light emission surface, and a side surface,
a first protective layer that is provided on the light incident surface of the color change layer, and
a second protective layer that is provided on at least a part of the side surface of the color change layer, wherein
the first protective layer and the second protective layer are integrally formed,
the color change layer includes a plurality of color filters each having a light incident surface, and
the integrally formed first protective layer and second protective layer continuously extends between a light emission side of the light emitting element to the light incident surface of the plurality of color filters.