Light source panel and display device

Patent metadata

Field	Value
Publication number	US-11271051-B2
Application number	US-201716068281-A
Country	US
Kind code	B2
Filing date	Dec 1, 2017
Priority date	Apr 10, 2017
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

A light source panel and a display device are disclosed. The display device includes: a display panel of reflection type and a light source panel disposed on a light emitting side of the display panel, the light source panel includes a parallax barrier structure and light emitting units, the parallax barrier structure includes light splitting components, the light splitting components include at least a non-transparent state, the light transmission areas are located in spaces between adjacent splitting light components, and the light emitting units at least partially overlap with the light splitting components in a direction perpendicular to the light source panel.

First claim

What is claimed is:

1. A display device, comprising:
a display panel of reflection type; and
a light source panel disposed on a light emitting side of the display panel and being parallel to the display panel, the light source panel including a parallax barrier structure and light emitting units, and the light emitting units being capable of irradiating the display panel during operation,
wherein the light source panel comprises light emitting areas and light transmission areas, the light emitting units are disposed in the light emitting areas, and the parallax barrier structure is disposed on one side of the light emitting units away from the display panel, the parallax barrier structure comprises light splitting components, the light splitting components comprise at least a non-transparent state, the light transmission areas are located in spaces between adjacent light splitting components, and the light emitting units at least partially overlap with the light splitting components in a direction perpendicular to the light source panel,
the display panel of reflection type comprises a plurality of first pixel units adapted to provide a first parallax image and a plurality of second pixel units adapted to provide a second parallax image,
the light splitting components are at a side of the light emitting units that is away from the display panel of reflection type and opposite to a light emitting side of the light emitting units, and
when the light splitting components are in the non-transparent state, the light splitting components are adapted to enable the first parallax image and the second parallax image to be respectively displayed at different positions.

2. The display device according to claim 1 , wherein orthographic projections of the spaces between the adjacent light splitting components on a surface where the light source panel is located coincide with orthogonal projections of the light transmission areas on the surface where the light source panel is located.

3. The display device according to claim 1 , wherein orthographic projections of the light emitting units on a surface where the light source panel is located are located within orthogonal projections of the light splitting components on the surface where the light source panel is located.

4. The display device according to claim 1 , wherein the light emitting units are organic light emitting devices, and each of the organic light emitting devices comprises at least a first electrode layer, a light emitting layer and a second electrode layer that are sequentially stacked on top of each other, and the first electrode layer is disposed on a side of the light emitting layer away from the display panel, and the second electrode layer is a transparent electrode.

5. The display device according to claim 4 , wherein the light emitting layer is a white light emitting layer or comprises a red light emitting layer, a green light emitting layer and a blue light emitting layer that are stacked on top of each other.

6. The display device according to claim 1 , wherein the light source panel further comprises a pixel definition layer for defining the light emitting units, and the pixel definition layer comprises a transparent material and extends into the light transmission area.

7. The display device according to claim 4 , wherein the first electrode layer is a non-transparent electrode, and the first electrode layer is configured for the light splitting components of the parallax barrier structure.

8. The display device according to claim 4 , wherein the parallax barrier structure comprises a black matrix as the light splitting components, and the first electrode layer is at least partially overlapped with the black matrix.

9. The display device according to claim 8 , wherein the first electrode layer is a reflective electrode, and an orthographic projection of the first electrode layer on a surface, where the light source panel is located, is located within an orthogonal projection of the black matrix on the surface where the light source panel is located.

10. The display device according to claim 4 , wherein the parallax barrier structure is a liquid crystal grating or an electrochromic grating, and
the liquid crystal grating or the electrochromic grating comprises portions that are transformed into a non-transparent state after being applied with a voltage signal and functions as the light splitting components, and the first electrode layer is a transparent electrode.

11. A light source panel, comprising:
a parallax barrier structure and light emitting units,
wherein the light source panel is disposed on a light emitting side of a display panel of reflection type, the parallax barrier structure comprises a plurality of light splitting components, the plurality of light splitting components comprise at least a non-transparent state, and the light transmission areas are located in spaces between adjacent light splitting components, and the light emitting units at least partially overlap with the light splitting components in a direction perpendicular to the light source panel,
the display panel of reflection type comprises a plurality of first pixel units adapted to provide a first parallax image and a plurality of second pixel units adapted to provide a second parallax image,
the light splitting components are at a side of the light emitting units that is away from the display panel of reflection type and opposite to a light emitting side of the light emitting units, and
when the light splitting components are in the non-transparent state, the light splitting components are adapted to enable the first parallax image and the second parallax image to be respectively displayed at different positions.

12. The light source panel according to claim 11 , wherein the light emitting units are organic light emitting devices, and each of the organic light emitting devices comprises at least a first electrode layer, a light emitting layer and a second electrode layer that are sequentially stacked on top of each other.

13. The light source panel according to claim 12 , wherein the first electrode layer is a non-transparent electrode, and the first electrode layer is configured for the light splitting components of the parallax barrier structure.

14. The light source panel according to claim 12 , wherein the parallax barrier structure comprises a black matrix as the light splitting components, and the first electrode layer is at least partially overlapped with the black matrix.

15. The light source panel according to claim 14 , wherein the first electrode layer is a reflective electrode, and an orthographic projection of the first electrode layer on the surface, where the light source panel is located, is located within an orthogonal projection of the black matrix on the surface where the light source panel is located.

16. The light source panel according to claim 11 , wherein the parallax barrier structure is a liquid crystal grating or an electrochromic grating, and the liquid crystal grating or the electrochromic grating comprises portions that are transformed into a non-transparent state after being applied with a voltage signal and functions as the light splitting components.

17. The display device according to claim 2 , wherein orthographic projections of the light emitting units on the surface where the light source panel is located are located within orthogonal projections of the light splitting components on the surface where the light source panel is located.

18. The display device according to claim 2 , w

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Display Tech Co

Inventors

• Hu Weipin
• Feng Xiang
• Wei Congcong
• Wang Chun
• Jiang Mingxiao
• Sun Xiao

Classifications

• H10K59/80518

  Reflective anodes, e.g. ITO combined with thick metallic layers · CPC title

• H10K59/50 Primary

  OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements · CPC title

• G02B30/30 Primary

  involving parallax barriers · CPC title

• G02F2201/30

  grating · CPC title

• G02F1/1323

  Arrangements for providing a switchable viewing angle · CPC title