Display panel assembly, display device and driving method thereof

Patent metadata

Field	Value
Publication number	US-10564466-B2
Application number	US-201715568429-A
Country	US
Kind code	B2
Filing date	Apr 19, 2017
Priority date	May 19, 2016
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

Provided is a display panel assembly, comprising a display panel and a plurality of optical micro-structures arranged at a light outgoing side of the display panel. The display panel comprises a plurality of pixel groups, each of the plurality of pixel groups comprising one pixel or a plurality of pixels sequentially arranged. Each of the plurality of optical micro-structures corresponds to a plurality of pixel groups sequentially arranged, for modulating light emitted from the corresponding pixel groups to different fields of view. A display device and a driving method thereof are also provided.

First claim

The invention claimed is:

1. A display panel assembly, comprising:
a display panel comprising a plurality of pixel groups, each of the plurality of pixel groups comprising one pixel or a plurality of pixels sequentially arranged; and
a plurality of optical micro-structures arranged at a light outgoing side of the display panel, each of the plurality of optical micro-structures corresponding to a plurality of pixel groups sequentially arranged, for modulating light emitted from the corresponding pixel groups to different fields of view,
wherein each of the optical micro-structures comprises a first electrode, a second electrode, and a liquid crystal layer located between the first electrode and the second electrode, the first electrode comprises a plurality of first sub-electrodes insulated and spaced apart from each other, each of the plurality of first sub-electrodes corresponds to one pixel,
wherein an electric field generated between each of the first sub-electrodes and the second electrode controls liquid crystal molecules in the liquid crystal layer at corresponding position of the first sub-electrode to deflect,
wherein a light shielding member is arranged between adjacent pixel groups corresponding to a same optical micro-structure, and
wherein the first electrode further comprises an intermediate sub-electrode corresponding to a position of the light shielding member, and the liquid crystal layer further comprises cholesteric liquid crystals, and the cholesteric liquid crystals are located in an area corresponding to the intermediate sub-electrode, and an electric field venerated between the intermediate sub-electrode and the second electrode controls the cholesteric liquid crystals to be switched between a focal conic texture state and a planar texture state.

2. The display panel assembly of claim 1 , wherein the liquid crystal layer comprises nematic liquid crystals.

3. The display panel assembly of claim 2 , wherein the nematic liquid crystals are located in areas corresponding to the first sub-electrodes.

4. The display panel assembly of claim 3 , wherein each of the plurality of optical micro-structures corresponds to two sequentially arranged pixel groups.

5. The display panel assembly of claim 2 , wherein each of the plurality of optical micro-structures corresponds to two sequentially arranged pixel groups.

6. The display panel assembly of claim 2 , wherein each of the plurality of optical micro-structures corresponds to two sequentially arranged pixel groups.

7. The display panel assembly of claim 1 , wherein each of the plurality of optical micro-structures corresponds to two sequentially arranged pixel groups.

8. A display device comprising the display panel assembly of claim 1 .

9. A method of driving the display device of claim 8 , the method comprising:
providing drive signals to each of the plurality of optical micro-structures during a multiple view field display, so that each of the optical micro-structures modulates light emitted from the plurality of pixel groups sequentially arranged and corresponding to the optical micro-structure to different fields of view, wherein the number of fields of view is same as the number of pixel groups corresponding to the optical micro-structure,
wherein each of the plurality of optical micro-structures comprises a first electrode, a second electrode, and a liquid crystal layer located between the first electrode and the second electrode, and the first electrode comprises a plurality of first sub-electrodes insulated and spaced apart from each other,
during the multiple view field display, the step of providing driving signals to each of the plurality of the optical micro-structures comprising:
providing a first voltage signal to the second electrode; and
providing a second voltage signal to the first sub-electrodes respectively, so that the liquid crystal molecules at positions of different pixel groups deflect toward different directions;
wherein a light shielding member is arranged between adjacent pixel groups corresponding to a same optical micro-structure, the first electrode further comprises an intermediate sub-electrode corresponding to a position of the light shielding member, and the liquid crystal layer comprises cholesteric liquid crystals corresponding to a position of the intermediate sub-electrode,
the driving method further comprising:
when switching from the multiple view field display to a single view field display, providing a first pulse signal to the intermediate sub-electrode, so that the cholesteric liquid crystals come into a focal conic texture state; and
when switching from the single view field display to the multiple view field display, providing a second pulse signal to the intermediate sub-electrode, so that the cholesteric liquid crystals come into a planar texture state.

10. The display device of claim 8 , wherein each of the optical micro-structures comprises a first electrode, a second electrode, and a liquid crystal layer located between the first electrode and the second electrode,
the first electrode comprises a plurality of first sub-electrodes insulated and spaced apart from each other, each of the plurality of first sub-electrodes corresponds to one pixel,
wherein an electric field generated between each of the first sub-electrodes and the second electrode controls liquid crystal molecules in the liquid crystal layer at corresponding position of the first sub-electrode to deflect.

11. The display device of claim 10 , wherein the liquid crystal layer comprises nematic liquid crystals.

12. The display device of claim 11 , wherein a light shielding member is arranged between adjacent pixel groups corresponding to a same optical micro-structure.

13. The display device of claim 12 , wherein the first electrode further comprises an intermediate sub-electrode corresponding to a position of the light shielding member, and the liquid crystal layer further comprises cholesteric liquid crystals,
wherein the nematic liquid crystals are located in areas corresponding to the first sub-electrodes, and the cholesteric liquid crystals are located in an area corresponding to the intermediate sub-electrode, and an electric field generated between the intermediate sub-electrode and the second electrode controls the cholesteric liquid crystals to be switched between a focal conic texture state and a planar texture state.

14. The display device of claim 8 , wherein each of the plurality of optical micro-structures corresponds to two sequentially arranged pixel groups.

15. The display panel assembly of claim 1 , wherein each of the plurality of optical micro-structures corresponds to two sequentially arranged pixel groups.

Assignees

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

Inventors

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

Classifications

• G02F1/134309 Primary

  characterised by their geometrical arrangement · CPC title

• G02F1/13306

  Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence) · CPC title

• G02F1/29

  for the control of the position or the direction of light beams, i.e. deflection · CPC title

• G02F1/13718 Primary

  based on a change of the texture state of a cholesteric liquid crystal · CPC title

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title