Liquid crystal display, display method and terminal

Patent metadata

Field	Value
Publication number	US-11294226-B2
Application number	US-201916587148-A
Country	US
Kind code	B2
Filing date	Sep 30, 2019
Priority date	Jan 31, 2019
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

A liquid crystal display includes: a backlight layer, a filter layer, and an image display element. The backlight layer is formed with a first light transmitting hole. The filter layer is formed with a colorless region corresponding to the first light transmitting hole. The image display element is disposed at the first light transmitting hole, and light of the image display element is projected on the liquid crystal display and corresponds to the colorless region. The liquid crystal display can realize the full screen display effect, and image capturing functions of the lens suitable for the full screen display.

First claim

The invention claimed is:

1. A liquid crystal display, comprising:
a backlight layer having a first light transmitting hole;
a filter layer having a colorless region corresponding to the first light transmitting hole;
an image display element located in a surrounding region of the first light transmitting hole underneath the backlight layer; and
a light shielding member disposed on a side wall of the first light transmitting hole, to block light emitted from the backlight layer,
wherein the image display element is capable of directly displaying an image and configured to project light onto the liquid crystal display corresponding to the colorless region; and
wherein the image display element comprises:
a sub-image display element, and a light gathering member disposed above a light-emitting surface of the sub-image display element,
wherein the light gathering member has a curved or inclined light incident surface/light-exiting surface, and is disposed to project light emitted from the sub-image display element in an inclined direction onto the liquid crystal display corresponding to the colorless region uniformly.

2. The liquid crystal display according to claim 1 , wherein the image display element comprises a color display state and/or a black and white display state.

3. The liquid crystal display according to claim 1 , wherein the light gathering member is configured to uniformly project the light emitted from the sub-image display element onto the colorless region that is misaligned with the sub-image display element.

4. The liquid crystal display according to claim 1 , wherein the liquid crystal display further comprises a liquid crystal driving element,
wherein a liquid crystal layer in the liquid crystal display comprises a light transmitting state caused by driving of the liquid crystal driving element.

5. The liquid crystal display according to claim 4 , wherein the liquid crystal layer further comprises a light shielding state caused by driving of the liquid crystal driving element, and a light transmittance under the light shielding state is smaller than a light transmittance under the light transmitting state.

6. The liquid crystal display according to claim 1 , wherein the liquid crystal display further comprises a display driving element configured to drive the image display element to be turned on or off.

7. The liquid crystal display according to claim 1 , wherein an inner polarizing layer of the liquid crystal display is formed with a second light transmitting hole corresponding to the first light transmitting hole.

8. The liquid crystal display according to claim 3 , wherein the sub-image display element comprises at least one of: a mini light emitting diode element or element array, a micro light emitting diode element or element array, a liquid crystal display, or an organic light emitting diode array.

9. The liquid crystal display according to claim 3 , wherein the light gathering member comprises at least one of: a prism, a microlens array, or a lens array.

10. The liquid crystal display according to claim 1 , wherein a liquid crystal driving element of the liquid crystal display is connected to a display driving element of the image display element to realize communication; and
the liquid crystal driving element and the display driving element are configured such that the liquid crystal display realizes display content synchronization in a region outside the colorless region and the image display element.

11. A display method, applied to a liquid crystal display, the liquid crystal display comprising: a backlight layer, formed with a first light transmitting hole; a filter layer, formed with a colorless region corresponding to the first light transmitting hole; and an image display element, located in a surrounding region of the first light transmitting hole underneath the backlight layer and capable of directly displaying an image; and a light shielding member disposed on a side wall of the first light transmitting hole, to block light emitted from the backlight layer, light of the image display element being projected on the liquid crystal display and corresponding to the colorless region, the method comprising:
a backlight layer emitting light, the light being displayed in a region of the liquid crystal display outside the colorless region;
an image display element emitting light and displaying, and a display image being projected on the liquid crystal display and corresponding to the colorless region;
wherein the image display element comprises:
a sub-image display element, and a light gathering member disposed above a light-emitting surface of the sub-image display element,
wherein the light gathering member has a curved or inclined light incident surface/light-exiting surface, and is disposed to project light emitted from the sub-image display element in an inclined direction onto the liquid crystal display corresponding to the colorless region uniformly.

12. The method according to claim 11 , wherein the image display element emitting light comprises:
the image display element displaying a color image, or the image display element displaying a black and white image.

13. The method according to claim 11 , wherein the image display element emitting light and displaying comprises:
a liquid crystal driving element driving liquid crystals of a liquid crystal layer at the colorless region to be turned to a light transmitting state, and changing a polarization angle of the light emitted by the image display element, such that the light penetrates an outer polarizing layer.

14. The method according to claim 11 , further comprising:
a liquid crystal driving element of the liquid crystal display communicating with a display driving element of the image display element to transmit display information, and display contents of a region of the liquid crystal display outside the colorless region and the image display element synchronize.

15. The method according to claim 11 , further comprising:
the backlight layer emitting light, the light being displayed on the region of the liquid crystal display outside the colorless region;
turning off the image display element, liquid crystals in the liquid crystal layer corresponding to the colorless region being turned to a light transmitting state to realize light collection.

16. The method according to claim 11 , further comprising:
turning off the backlight layer and the image display element; and
liquid crystals in the liquid crystal layer corresponding to the colorless region being turned to a light shielding state to realize screen off.

17. A terminal, comprising: a lens, and a liquid crystal display, the liquid crystal display comprising: a backlight layer, formed with a first light transmitting hole; a filter layer, formed with a colorless region corresponding to the first light transmitting hole; and an image display element, located in a surrounding region of the first light transmitting hole underneath the backlight layer and capable of directly displaying an image; and a light shielding member disposed on a side wall of the first light transmitting hole, to block light emitted from the backlight layer, light of the image display element being projected on the liquid crystal display and corresponding to the colorless region,
wherein the lens is disposed corresponding to a first light transmitting hole in the liquid crystal display, and the image display element is disposed in a surrounding region of the lens; and
wherein the image display element comprises:
a sub-image display eleme

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Gu Jianglin
• Yen Chiafu

Classifications

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F1/133526

  Lenses, e.g. microlenses or Fresnel lenses · 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

• G02F1/133528

  Polarisers · CPC title

• H04M1/0266

  for a display module assembly · CPC title