Display device, glasses-free three-dimensional (3D) display system and virtual reality (VR) glasses

Patent metadata

Field	Value
Publication number	US-10473944-B2
Application number	US-201615539715-A
Country	US
Kind code	B2
Filing date	Oct 24, 2016
Priority date	Apr 8, 2016
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A display device, a glasses-free three-dimensional display system and virtual reality (VR) glasses are disclosed. The display device includes a backlight; a polarizer disposed on a light-emitting side of the backlight and a plurality of liquid crystal displays (LCDs) stacked on a light-emitting side of the polarizer. Each LCD includes a plurality of light adjusting units; the light adjusting units of the plurality of LCDs are staggered from each other; and the light adjusting unit is configured to allow light emitted by the backlight to be refracted and emitted to a target position or be totally reflected.

First claim

What is claimed is:

1. A display device, comprising:
a backlight;
a polarizer disposed on a light-emitting side of the backlight; and
a plurality of liquid crystal displays (LCDs) stacked on a light-emitting side of the polarizer, in which each LCD includes a plurality of light adjusting units; projections of the light adjusting units of different LCDs of the plurality of LCDs on a substrate of one of the plurality of LCDs are not overlapped with each other; and the light adjusting unit is configured to be switched between allowing light emitted by the backlight to be refracted and emitted to a target position and allowing light emitted from the backlight to be totally reflected in the light adjusting unit,
wherein each of the plurality of light adjusting units comprises a liquid crystal molecule layer.

2. The display device according to claim 1 , wherein the display device comprises two LCDs; the two LCDs include a first LCD and a second LCD;
light adjusting units of the first LCD include first light adjusting units;
light adjusting units of the second LCD include second light adjusting units; and
both in a row direction of the display device and a column direction of the display device, the first light adjusting units and the second light adjusting units are alternately arranged.

3. The display device according to claim 1 , wherein each LCD includes a first substrate and a second substrate that are arranged opposite to each other, and the liquid crystal molecule layer disposed between the first substrate and the second substrate;
a plurality of strip electrodes are disposed on one surface of the first substrate facing the liquid crystal molecule layer; an extension direction of the strip electrodes is a column direction; and one light adjusting unit corresponds to a plurality of strip electrodes in a row direction; and
a plate electrode is disposed on one surface of the second substrate facing the liquid crystal molecule layer.

4. The display device according to claim 3 , wherein the strip electrodes are disposed at all positions of the first substrate of each LCD.

5. The display device according to claim 3 , wherein the strip electrodes are only disposed at positions, corresponding to the plurality of light adjusting units, on the first substrate of each LCD.

6. The display device according to claim 3 , wherein two adjacent LCDs share one substrate.

7. The display device according to claim 1 , wherein the display device comprises a plurality of pixels arranged in an array; each pixel includes a plurality of sub-pixels; and each sub-pixel corresponds to one light adjusting unit.

8. The display device according to claim 1 , wherein the display device comprises a plurality of pixels arranged in an array; each pixel includes a plurality of sub-pixels; and each sub-pixel corresponds to a plurality of light adjusting units.

9. The display device according to claim 1 , further comprising a optical color conversion layer disposed on the light-emitting side of the backlight,
wherein the optical color conversion layer includes a plurality of areas; and different areas are configured to convert light irradiated to the areas into light of different colors.

10. The display device according to claim 9 , wherein the optical color conversion layer is disposed on a light incident side of the LCD.

11. The display device according to claim 9 , wherein the backlight is a white light source; and the optical color conversion layer comprises a color filter.

12. The display device according to claim 11 , wherein the color filter includes red areas, green areas and blue areas.

13. The display device according to claim 9 , wherein the backlight is a blue light source; the optical color conversion layer includes first areas, second areas and third areas; the first areas are transparent; the second areas are provided with quantum dots for emitting red light; and the third areas are provided with quantum dots for emitting green light.

14. A glasses-free 3D display system, comprising the display device according to claim 1 .

15. The glasses-free 3D display system according to claim 14 , wherein the display device includes a plurality of pixels arranged in an array; each pixel includes a plurality of sub-pixels; each sub-pixel corresponds to one or more light adjusting units;
the target position includes a left-eye position and a right-eye position; odd columns of sub-pixels display a left-eye image; even columns of sub-pixels display a right-eye image; upon odd columns of light adjusting units adjusting light, light emitted by the backlight can be refracted and emitted to the left eye or be totally reflected; and upon even columns of light adjusting units adjusting light, the light emitted by the backlight can be refracted and emitted to the right eye or be totally reflected.

16. Virtual reality (VR) glasses, comprising a left-eye glass and a right-eye glass, wherein both the left-eye glass and the right-eye glass each include the display device according to claim 1 .

17. The VR glasses according to claim 16 , wherein the display device of the left-eye glass displays a left-eye image; upon the light adjusting units in the display device adjusting light, light emitted by the backlight can be refracted and emitted to the left eye or be totally reflected; and
the display device of the right-eye glass displays a right-eye image; and upon the light adjusting units in the display device adjusting light, the light emitted by the backlight can be refracted and emitted to the right eye or be totally reflected.

18. The display device according to claim 2 , wherein the display device comprises a plurality of pixels arranged in an array; each pixel includes a plurality of sub-pixels; and each sub-pixel corresponds to a plurality of light adjusting units.

19. The display device according to claim 3 , wherein the display device comprises a plurality of pixels arranged in an array; each pixel includes a plurality of sub-pixels; and each sub-pixel corresponds to a plurality of light adjusting units.

Assignees

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

Inventors

• Yang Ming
• Wang Qian
• Chen Xiaochuan
• Zhao Wenqing
• Lu Pengcheng
• Xu Rui
• Wang Lei
• Niu Xiaochen
• Gao Jian
• Wang Haisheng

Classifications

• H04N2213/001

  Constructional or mechanical details · CPC title

• G02B27/017 Primary

  Head mounted · CPC title

• H04N13/344

  with head-mounted left-right displays · CPC title

• G02B30/25

  using polarisation techniques · CPC title

• G02F1/133707

  Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes · CPC title