Unit pixel having light emitting device and displaying apparatus

Patent metadata

Field	Value
Publication number	US-12113151-B2
Application number	US-202318535178-A
Country	US
Kind code	B2
Filing date	Dec 11, 2023
Priority date	Feb 11, 2020
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

A unit pixel includes a transparent substrate, a plurality of light emitting devices arranged on the transparent substrate, and an optical layer disposed between the light emitting devices and the transparent substrate and transmitting light emitted from the light emitting devices. The transparent substrate has a concavo-convex pattern on a surface facing the light emitting devices.

First claim

What is claimed is:

1. A light device, comprising:
a substrate;
two or more light emitting devices disposed on the substrate, each of the two or more light emitting devices comprising a semiconductor layer;
an adhesive layer disposed between a light emitting device and the substrate;
a step adjustment layer covering a region of the light emitting device and comprising a region overlapping the adhesive layer; and
a light block layer disposed on the substrate and configured to provide at least one light path,
wherein the at least one light path includes a concave-convex patterned region disposed between the substrate and the semiconductor layer, and
wherein the at least one light path includes a region comprising a width greater than a width of the light emitting device.

2. The light device of claim 1 , wherein the light emitting device further comprises a first electrode pad and a second electrode pad.

3. The light device of claim 2 , wherein the step adjustment layer comprises an open region exposing the first electrode pad.

4. The light device of claim 1 , wherein the step adjustment layer includes a region comprising a width smaller than a width of the adhesive layer.

5. The light device of claim 1 , wherein the step adjustment layer partially exposes an edge of the adhesive layer.

6. The light device of claim 1 , further comprising a cover layer covering a region of the substrate and a region of the semiconductor layer.

7. The light device of claim 6 , wherein the cover layer covers a region of the adhesive layer.

8. The light device of claim 1 , wherein the two or more light emitting devices comprise at least two of a blue light emitter, a green light emitter or a red light emitter.

9. A display apparatus, comprising
a panel substrate; and
a light module comprising a light source;
wherein the light source comprising:
a substrate;
two or more light emitting devices disposed on the substrate, each of the two or more light emitting devices comprising a semiconductor layer;
an adhesive layer disposed between a light emitting device and the substrate;
a step adjustment layer covering a region of the semiconductor layer and comprising a region overlapping the adhesive layer; and
a light blocking layer disposed on the substrate and configured to provide at least one light path,

wherein the at least one light path includes a concave-convex patterned region disposed on the substrate, and
wherein the at least one light path comprises a region comprising a width greater than a width of the light emitting device.

10. The display apparatus of claim 9 , wherein the light emitting device further comprises a first electrode pad and a second electrode pad.

11. The display apparatus of claim 10 , wherein the step adjustment layer comprises an open region exposing the first electrode pad.

12. The display apparatus of claim 9 , wherein the step adjustment layer includes a region comprising a width smaller than a width of the adhesive layer.

13. The display apparatus of claim 9 , wherein the step adjustment layer partially exposes an edge of the adhesive layer.

14. The display apparatus of claim 9 , further comprising a cover layer covering a region of the substrate and a region of the semiconductor layer.

15. The display apparatus of claim 14 , wherein the cover layer covers a region of the adhesive layer.

16. A light device, comprising:
a substrate;
two or more light emitting devices disposed on the substrate, each of the two or more light emitting devices comprising a semiconductor layer;
an adhesive layer disposed between a light emitting device and the substrate;
a step adjustment layer covering a region of the light emitting device and comprising a region overlapping the adhesive layer; and
a light block layer disposed on the substrate and configured to provide at least one light path,
wherein the at least one light path includes a concave-convex patterned region disposed on the substrate, and
wherein the at least one light path further comprises a cover layer covering the concave-convex patterned region and the semiconductor layer.

17. The light device of claim 16 , wherein the step adjustment layer includes a region comprising a width smaller than a width of the adhesive layer.

18. The light device of claim 16 , wherein the step adjustment layer partially exposes an edge of the adhesive layer.

19. The light device of claim 18 , wherein the cover layer covers the edge of the adhesive layer.

20. The light device of claim 16 , wherein the light emitting device further comprises a first electrode pad and a second electrode pad, and wherein the step adjustment layer comprises an open region exposing the first electrode pad.

Assignees

• Seoul Viosys Co Ltd

Inventors

• Cha Namgoo
• Kim Sangmin
• Ahn Jung Hwan
• Lim Jae Hee

Classifications

• H10H20/8312

  extending at least partially through the bodies · CPC title

• H10H20/82

  Roughened surfaces, e.g. at the interface between epitaxial layers · CPC title

• H10H20/821

  of the light-emitting regions, e.g. non-planar junctions · CPC title

• H10H20/851

  Wavelength conversion means · CPC title

• H10H20/84

  Coatings, e.g. passivation layers or antireflective coatings · CPC title