Light source, light source assembly, display device and display method

Patent metadata

Field	Value
Publication number	US-11187939-B2
Application number	US-201816081973-A
Country	US
Kind code	B2
Filing date	Jan 8, 2018
Priority date	Apr 20, 2017
Publication date	Nov 30, 2021
Grant date	Nov 30, 2021

Abstract

A light source, a light source assembly, a display device and a display method. The light source comprises a first light emitting region and a second light emitting region. The first light emitting region and the second light emitting region can control ON or OFF of the light emission separately. The first light emitting region and the second light emitting region are arranged alternately along a first direction. The first light emitting region and the second light emitting region of the light sources in this disclosure can be controlled separately. Hence, one light emitting region can be made to emit light while the other light emitting region can be made to be turned off. There is no stray light in the turned-off light emitting region, so as to avoid stray light crosstalk to light of the other light emitting region.

First claim

The invention claimed is:

1. A light source assembly, comprising a stacked light transmission component and a light source, the light source comprising:
a first light emitting region and a second light emitting region, the first light emitting region and the second light emitting region being capable of controlling ON and OFF of a light emission seperately,
the first light emitting region and the second light emitting region being arranged alternately along the first direction;
wherein the stacked light transmission component comprises a first adjustable light transmission region and a second adjustable light transmission region, the first adjustable light transmission region and the second adjustable light transmission region being capable of controlling transmission or occlusion of light separately;
and wherein an orthographic projection of the first light emitting region on the light transmission component coincides with the first adjustable light transmission region, and an orthographic projection of the second light emitting region on the light transmission component coincides with the second adjustable light transmission region.

2. The light source assembly according to claim 1 , wherein the first adjustable light transmission region and the second adjustable light transmission region are arranged alternately.

3. The light source assembly according to claim 1 , wherein the first adjustable light transmission region is transparent, the first light emitting region emits light, the second adjustable light transmission region is non-transparent, and the second light emitting region does not emit light.

4. The light source assembly according to claim 1 , wherein an area of the first adjustable light transmission region and an area of the second adjustable light transmission region are equal.

5. The light source assembly according to claim 1 , wherein a light emitting area of the first light emitting region is not larger than an area of the first adjustable light transmission region.

6. The light source assembly according to claim 1 , wherein the light transmission component is a twisted nematic liquid crystal cell.

7. A display device, comprising: a display and the light source assembly as claimed in claim 1 ;
wherein the light source assembly and the display are stacked, and the light source is arranged between the display and the light transmission component;
wherein the display comprises a first pixel column and a second pixel column arranged alternately, the orthographic projection of the first light emitting region on the display is located between a first pixel column and a second pixel column that are adjacent to each other directly.

8. The display device according to claim 7 , wherein the display is a reflective liquid crystal display.

9. A display method, which is applied in the display device as claimed in claim 7 ; wherein the method comprises:
when the display device performs 3D display, controlling the first adjustable light transmission region of the light transmission component to be transparent, the second adjustable light transmission region to be non-transparent, and controlling the first light emitting region of the light source to emit light, the second light emitting region not to emit light;
when the display device performs 2D display, controlling both the first adjustable light transmission region and the second adjustable light transmission region of the light transmission component to be transparent, and controlling both the first light emitting region and the second light emitting region of the light source to emit light.

10. The display device according to claim 7 , wherein the first adjustable light transmission region and the second adjustable light transmission region are arranged alternately.

11. The display device according to claim 7 , wherein the first adjustable light transmission region is transparent, the first light emitting region emits light, the second adjustable light transmission region is non-transparent, and the second light emitting region does not emit light.

12. The display device according to claim 7 , wherein an area of the first adjustable light transmission region and an area of the second adjustable light transmission region are equal.

13. The display device according to claim 7 , wherein a light emitting area of the first light emitting region is not larger than an area of the first adjustable light transmission region.

14. The light source assembly according to claim 1 , wherein light emitting areas of the first light emitting region and the second light emitting region are equal.

15. The light source assembly according to claim 1 , wherein a shape of the first light emitting region and a shape of the second light emitting region are both strip shapes, a length direction of the first light emitting region and a length direction of the second light emitting region are perpendicular to the first direction.

16. The light source assembly according to claim 1 , wherein the first light emitting region and the second light emitting region are both constituted by a plurality of white organic light emitting diodes.

Assignees

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

Inventors

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

Classifications

• G02F1/133603 Primary

  with LEDs · CPC title

• G02F1/1347

  Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells · CPC title

• H04N13/32

  using arrays of controllable light sources; using moving apertures or moving light sources · CPC title

• G02F1/133605

  including specially adapted reflectors · CPC title

• G02F1/1336 Primary

  Illuminating devices · CPC title