3-D display panel including heat dissipation structure between light emitting units, and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-11508945-B2
Application number	US-201916763513-A
Country	US
Kind code	B2
Filing date	Oct 14, 2019
Priority date	Oct 17, 2018
Publication date	Nov 22, 2022
Grant date	Nov 22, 2022

Abstract

The embodiments of the present disclosure provide a display panel, a manufacturing method thereof, and a display device. The display panel includes a first substrate and a second substrate cell-assembled to each other, a light emitting member layer disposed between the first substrate and the second substrate and a light diffusion layer disposed on a light existing side of the light emitting member layer, the light emitting member layer includes a plurality of light emitting units and imaging holes disposed on at least two sides of each of the light emitting units, the light diffusion layer includes a reflective member configured to reflect a light ray emitted by the light emitting unit and reaching the reflective member, and the reflected light ray reflected by the reflective member exits from the imaging holes.

First claim

What is claimed is:

1. A display panel, comprising:
a first substrate and a second substrate, cell-assembled to each other;
a light emitting member layer, disposed between the first substrate and the second substrate; and
a light diffusion layer, disposed on a light exiting side of the light emitting member layer,
wherein the light emitting member layer comprises light emitting units and imaging holes disposed on at least two sides of each of the plurality of light emitting units,
the light diffusion layer comprises a reflective member, the reflective member is configured to reflect light ray emitted by a light emitting unit of the light emitting units and reaching the reflective member, and the reflected light ray reflected by the reflective member exits from an imaging hole of the imaging holes,
where the light emitting member layer further comprises;
a heat dissipation structure, disposed between adjacent light emitting units,
the heat dissipation structure is disposed in a same layer as the light emitting unit, and the imaging hole is a through hole arranged within the heat dissipation structure.

2. The display panel according to claim 1 , wherein a reflective surface of the reflective member faces a side where the light emitting member layer is located, and the imaging hole is disposed on an optical path of the reflected light ray exiting from the reflective member.

3. The display panel according to claim 1 , wherein the light diffusion layer further comprises a diffusion member disposed between the light emitting unit and the reflective member; and
the diffusion member is configured to diffuse the light ray emitted by the light emitting unit and passing through the diffusion member, so that the diffused exiting light ray is irradiated onto the reflective member.

4. The display panel according to claim 1 , wherein adjacent light emitting units share the imaging hole disposed between the adjacent light emitting units.

5. The display panel according to claim 3 , wherein the reflective member comprises semi-convex lenses corresponding to the light emitting units, convex surfaces of the semi-convex lenses are disposed on a side close to the light emitting units, and each of the semi-convex lenses covers the corresponding light emitting unit in a projection region of the light emitting member layer.

6. The display panel according to claim 3 , wherein the reflective member comprises semi-convex lenses disposed in a one-to-one correspondence with the light emitting units, convex surfaces of the semi-convex lenses are disposed on a side close to the light emitting units, and each of the semi-convex lenses covers the corresponding light emitting unit in a projection region of the light emitting member layer.

7. The display panel according to claim 5 , wherein reflective surfaces of the semi-convex lenses are located on a side of the semi-convex lenses opposite to the light emitting unit, the reflective surfaces are planes, and the reflective surfaces are configured to reflect the light ray emitted by the light emitting units to a side where the imaging holes are located.

8. The display panel according to claim 5 , wherein the diffusion member comprises biconvex lenses corresponding to the light emitting units, and each of the biconvex lenses covers the corresponding light emitting unit in the projection region of the light emitting member layer.

9. The display panel according to claim 5 , wherein the diffusion member comprises biconvex lenses disposed in a one-to-one correspondence with the light emitting units, and each of the biconvex lenses covers the corresponding light emitting unit in the projection region of the light emitting member layer.

10. The display panel according to claim 8 , wherein positions between the light emitting unit and the corresponding biconvex lens and the corresponding semi-convex lens satisfy:
F<u< 2 F , and r> 2 F;
the u is a center distance between the light emitting unit and the biconvex lens, the F is a focal distance F of the biconvex lens, and the r is a center distance between the biconvex lens and the semi-convex lens.

11. The display panel according to claim 10 , wherein the light diffusion layer further comprises an optical loss layer arranged around the semi-convex lens and the biconvex lens, and the optical loss layer has a refractive index that is greater than refractive indices of the semi-convex lens and of the biconvex lens.

12. The display panel according to claim 10 , wherein materials of the semi-convex lens and the biconvex lens comprise silicone, polymethyl methacrylate, polycarbonate, transparent resin, and glass.

13. The display panel according to claim 1 , further comprising:
a color filter layer, disposed on a light exiting side of the imaging holes and on the first substrate or the second substrate;
a pixel array layer, disposed between the first substrate and the second substrate, and located on a light exiting side of the color filter layer.

14. The display panel according to claim 1 , further comprising:
a color filter layer, disposed on a light exiting side of the imaging holes and on the first substrate or the second substrate;
a pixel array layer, disposed between the first substrate and the second substrate, and located on a side of the light diffusion layer opposite to the color filter layer.

15. A display device, comprising the display panel according to claim 1 .

16. A manufacturing method of a display panel, comprising:
forming light emitting units in a light emitting member layer;
forming imaging holes located on at least two sides of each emitting units; and
forming a reflective member located on a light exiting side of the light emitting member layer;
wherein the reflective member is configured to reflect light ray emitted by a light emitting unit of the light emitting units and reaching the reflective member, and the reflected light ray reflected by the reflective member exits from the imaging holes,
wherein after the forming the light emitting units, the method further comprises;
forming a heat dissipation structure located between adjacent light emitting units and in a same layer as the light emitting units; and
the forming the imaging holes located on at least two sides of each of the light omitting units comprises;
forming through holes in each of the beat dissipation structures, the through holes are the imaging holes.

17. The manufacturing method of a display panel according to claim 16 , further comprising:
forming a diffusion member located on the light exiting side of the light emitting member layer, wherein the diffusion member is located between the light emitting member layer and the reflective member, and the light ray emitted by the light emitting unit is diffused after passing through the diffusion member, so that the diffused exiting light ray is irradiated onto the reflective member.

18. The manufacturing method of a display panel according to claim 17 , wherein the reflective member comprises a semi-convex lens, the diffusion member comprises a biconvex lens, and the forming the reflective member and the forming the diffusion member comprises:
forming the semi-convex lens using a half tone mask process or a slit mask process; and
forming the biconvex lens using a half tone mask process or a slit mask process.

Assignees

• Fuzhou Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Zhu Aihua
• Bai Yun
• Huang Jianming
• Pan Wanping
• Lin Qiusheng
• Li Weiqiang
• Su Xuezhen
• Lin Yabin
• Cheng Li
• Yu Hailong
• Jia Xiaobo
• Li You

Classifications

• H01L51/5275

  Electricity · mapped topic

• H01L51/56 Primary

  Electricity · mapped topic

• H01L51/529

  Electricity · mapped topic

• H01L51/5271

  Electricity · mapped topic

• H10K59/8794

  Arrangements for heating and cooling · CPC title