Display device and display control method

Patent metadata

Field	Value
Publication number	US-9846343-B2
Application number	US-201314362118-A
Country	US
Kind code	B2
Filing date	Dec 16, 2013
Priority date	Aug 14, 2013
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

The present invention provides a display device and a display control method of the display device, so as to improve transmittance of the light emitted from the display device itself in an indoor environment. A display device provided by the present invention includes a display panel and a quarter-wave layer disposed at a light outgoing side of the display panel, the display device further includes: a liquid crystal structure disposed at a side of the quarter-wave layer away from the display panel, the liquid crystal structure presenting a polarization state or a transparent state under different ambient light intensity conditions.

First claim

What is claimed is:

1. A display device, comprising
a display panel;
a quarter-wave layer disposed at a light outgoing side of the display panel; and
a liquid crystal structure disposed at a side of the quarter-wave layer away from the display panel, the liquid crystal structure presenting a polarization state or a transparent state under different ambient light intensity conditions,

wherein the liquid crystal structure presents only the polarization state at a first ambient light intensity condition and presents only the transparent state under a second ambient light intensity condition, wherein intensity of ambient light under the first ambient light intensity condition is greater than or equal to a certain threshold, and the intensity of ambient light under the second ambient light intensity condition is smaller than the certain threshold.

2. The display device of claim 1 , wherein the liquid crystal structure comprises:
a first transparent substrate and a second transparent substrate provided face to face;
a first electrode disposed at a side of the first transparent substrate facing the second transparent substrate, and a second electrode disposed at a side of the second transparent substrate facing the first transparent substrate; and
a liquid crystal material layer disposed between the first electrode and the second electrode.

3. The display device of claim 2 , wherein the liquid crystal material layer is made of a guest-host liquid crystal material.

4. The display device of claim 3 , wherein
the guest-host liquid crystal material is a positive guest-host liquid crystal material, and the liquid crystal structure presents the polarization state when no voltage is applied between the first electrode and the second electrode, and presents the transparent state when a voltage is applied between the first electrode and the second electrode; or
the guest-host liquid crystal material is a negative guest-host liquid crystal material, and the liquid crystal structure presents the polarization state when a voltage is applied between the first electrode and the second electrode, and presents the transparent state when no voltage is applied between the first electrode and the second electrode.

5. The display device of claim 4 , wherein the voltage applied between the first electrode and the second electrode is in a range of 3V to 20V.

6. The display device of claim 2 , wherein the first transparent substrate and the second transparent substrate are transparent glass substrates or plastic substrates.

7. The display device of claim 2 , wherein materials of the first electrode and the second electrode are transparent conductive materials.

8. The display device of claim 7 , wherein the materials of the first electrode and the second electrode are indium tin oxide, indium zinc oxide, silver nanowires paste, graphite, or organic conductive materials.

9. The display device of claim 2 , wherein the liquid crystal material layer has a thickness of 1 μm to 50 μm.

10. The display device of claim 1 , further comprising a control unit, which is used for:
controlling the liquid crystal structure to present the polarization state under a first triggering condition; and
controlling the liquid crystal structure to present the transparent state under a second triggering condition,
wherein the first triggering condition and the second triggering condition are pre-set according to the intensity of ambient light, or set through a manual triggering by a user according to the intensity of ambient light, wherein the intensity of ambient light under the first triggering condition is larger than or equal to the certain threshold, and the intensity of ambient light under the second triggering condition is smaller than the certain threshold.

11. The display device of claim 2 , further comprising a control unit, which is used for:
controlling the liquid crystal structure to present the polarization state under a first triggering condition; and
controlling the liquid crystal structure to present the transparent state under a second triggering condition,
wherein the first triggering condition and the second triggering condition are pre-set according to the intensity of ambient light, or set through a manual triggering by a user according to the intensity of ambient light, and wherein the intensity of ambient light under the first triggering condition is larger than or equal to the certain threshold, and the intensity of ambient light under the second triggering condition is smaller than the certain threshold.

12. The display device of claim 3 , further comprising a control unit, which is used for:
controlling the liquid crystal structure to present the polarization state under a first triggering condition; and
controlling the liquid crystal structure to present the transparent state under a second triggering condition,
wherein the first triggering condition and the second triggering condition are pre-set according to the intensity of ambient light, or set through a manual triggering by a user according to the intensity of ambient light, and wherein the intensity of ambient light under the first triggering condition is larger than or equal to the certain threshold, and the intensity of ambient light under the second triggering condition is smaller than the certain threshold.

13. The display device of claim 4 , further comprising a control unit, which is used for:
controlling the liquid crystal structure to present the polarization state under a first triggering condition; and
controlling the liquid crystal structure to present the transparent state under a second triggering condition,
wherein the first triggering condition and the second triggering condition are pre-set according to the intensity of ambient light, or set through a manual triggering by a user according to the intensity of ambient light, and wherein when the intensity of ambient light under the first triggering condition is larger than or equal to the certain threshold, and the intensity of ambient light under the second triggering condition is smaller than the certain threshold.

14. The display device of claim 5 , further comprising a control unit, which is used for:
controlling the liquid crystal structure to present the polarization state under a first triggering condition; and
controlling the liquid crystal structure to present the transparent state under a second triggering condition,
wherein the first triggering condition and the second triggering condition are pre-set according to the intensity of ambient light, or set through a manual triggering by a user according to the intensity of ambient light, and wherein the intensity of ambient light under the first triggering condition is larger than or equal to the certain threshold, and the intensity of ambient light under the second triggering condition is smaller than the certain threshold.

15. The display device of claim 6 , further comprising a control unit, which is used for:
controlling the liquid crystal structure to present the polarization state under a first triggering condition; and
controlling the liquid crystal structure to present the transparent state under a second triggering condition,
wherein the first triggering condition and the second triggering condition are pre-set according to the intensity of ambient light, or set through a manual triggering by a user according to the intensity of ambient light, and wherein the intensity of ambient light under the first triggering condition is larger than or equal to the certain threshold, and the intensity of ambient light under the second t

Assignees

• Boe Technology Group Co Ltd

Inventors

• Suzuki Teruaki

Classifications

• G02F1/1313

  specially adapted for a particular application · CPC title

• G02B27/288

  Filters employing polarising elements, e.g. Lyot or Solc filters (G02B5/3016 takes precedence) · CPC title

• G02F1/133502

  Antiglare, refractive index matching layers · CPC title

• G02F2203/62

  Switchable arrangements whereby the element being usually not switchable · CPC title

• H01L51/5281

  Electricity · mapped topic