Display panel, display device and image acquiring method thereof

Patent metadata

Field	Value
Publication number	US-11240444-B2
Application number	US-201916452923-A
Country	US
Kind code	B2
Filing date	Jun 26, 2019
Priority date	Sep 30, 2018
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

Embodiments of the present disclosure provide a display panel, a display device and an image acquiring method thereof. The display panel includes a first imaging region, the first imaging region is provided with a filter, the filter is configured to adjust a polarization direction of light incident into the filter, and configured to filter out polarized light having a set polarization direction in the adjusted light.

First claim

The invention claimed is:

1. A display panel, comprising:
a first imaging region, the first imaging region being provided with a filter;
wherein, the filter is configured to adjust a polarization direction of light incident into the filter, and configured to filter out polarized light having a set polarization direction in the adjusted light,
wherein the filter includes:
a polarization direction adjuster, configured to adjust the polarization direction of the light incident into the filter;
an optical filter, provided on a light emergent side of the polarization direction adjuster, and configured to filter out the polarized light having the set polarization direction in the adjusted light; and
the polarization direction adjuster includes a liquid crystal cell, and the optical filter includes a first polarizer located on a light emergent side of the liquid crystal cell;
the liquid crystal cell includes a first liquid crystal layer, a first electrode and a second electrode which are configured to drive the first liquid crystal layer to deflect,
wherein the display panel further includes a display region, the display region is provided with a display unit, the display unit is configured to display an image, and the display unit includes a second liquid crystal layer;
wherein the second liquid crystal layer and the first liquid crystal layer are provided in a same layer and made of a same material.

2. The display panel according to claim 1 , wherein, the filter is controllable, such that the polarization direction of the adjusted light is variable.

3. The display panel according to claim 1 ,
wherein, the display unit includes:
a pixel electrode and a common electrode, configured to drive the second liquid crystal layer to display an image; and
a lower polarizer, located on a light emergent side of the second liquid crystal layer, or an opposite side of the light emergent side of the second liquid crystal layer.

4. The display panel according to claim 3 , wherein, the lower polarizer and the first polarizer are integrally formed.

5. The display panel according to claim 3 , wherein, the first electrode and the pixel electrode are provided in a same layer and made of a same material, and the second electrode and the common electrode are provided in a same layer and made of a same material.

6. The display panel according to claim 3 , further comprising:
an insulation barrier, provided between the first liquid crystal layer and the second liquid crystal layer in a direction parallel to the display panel, and configured to isolate the first liquid crystal layer from the second liquid crystal layer.

7. The display panel according to claim 3 , further comprising:
a second imaging region, the second imaging region being provided with a light transmitting unit, and the light transmitting unit being configured to transmit light incident into the light transmitting unit;
wherein, the light transmitting unit is a hollow portion; or,
the display unit includes a first transparent base and a second transparent base, the first transparent base and the second transparent base sandwich the second liquid crystal layer, the pixel electrode and the common electrode, and the light transmitting unit includes portions of the first transparent base and the second transparent base that extend to the second imaging region.

8. A display device, comprising:
a display panel according to claim 1 ; and
a first camera, provided on a light emergent side of the filter and corresponding to the first imaging region in a position.

9. The display device according to claim 8 , wherein, the display panel comprises a second imaging region, the second imaging region is provided with a light transmitting unit, and the light transmitting unit is configured to transmit light incident into the light transmitting unit;
the display device further comprises:
a second camera, provided on a light emergent side of the light transmitting unit.

10. The display device according to claim 9 , wherein, the light emergent side of the light transmitting unit and the light emergent side of the filter are all located on a light emergent side of the display device or an opposite side of the light emergent side of the display device,
the display device further comprises a backlight module, the backlight module includes a first hollow region, and the first camera is provided in the first hollow region,
the backlight module includes a second hollow region, and the second camera is provided in the second hollow region.

11. An image acquiring method of the display device according to claim 8 , comprising:
controlling a first camera to acquire a plurality of first images, wherein polarization directions of all of the plurality of first images are varied or polarization direction of at least one of the plurality of first images is varied, and controlling a filter to vary a polarization direction of light incident into the filter, before the first camera acquires each of the at least one first image or the first camera acquires each of all of the plurality of first images;
determining a target reflective region; and
selecting one of the first images whose target reflective region has a lowest luminance among the plurality of first images, to acquire a target image.

12. The image acquiring method according to claim 11 , wherein, the selecting one of the first images whose target reflective region has the lowest luminance among the plurality of first images, to acquire a target image, includes:
selecting one of the first images whose target reflective region has the lowest luminance among the plurality of first images as a filtered image;
performing luminance compensation on the filtered image according to a filtering degree of the filter, to acquire the target image.

13. The image acquiring method according to claim 11 , wherein, the filter includes:
a first liquid crystal layer;
a first electrode and a second electrode, configured to drive the first liquid crystal layer to deflect;
the controlling a filter to vary a polarization direction of light incident into the filter, before the first camera acquires each of the at least one first image or the first camera acquires each of all of the plurality of first images, includes:
applying a voltage to the first electrode and the second electrode for a different first image in the at least one first image or for a different first image in all of the plurality of first images, so that the first electrode and the second electrode have different voltage differences, to control liquid crystal molecules in the first liquid crystal layer to deflect by a set angle, the liquid crystal molecules deflecting by different set angles for the different first images.

14. The image acquiring method according to claim 12 , wherein, the display device comprises a second camera;
the image acquiring method further comprises:
controlling the second camera to acquire a second image, while the first camera is acquiring the plurality of first images.

15. The image acquiring method according to claim 14 , wherein, the first image and the second image respectively include a plurality of pixels,
the determining a target reflective region, includes:
comparing luminance of the plurality of first images at a same pixel, taking a region composed of pixels whose luminance fluctuations are larger than a set value as a first estimated reflective region, and taking the first estimated reflective region as the target reflective region;
or, acquiring an average luminance value of pixels in the second image, taking a region composed o

Assignees

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

Inventors

• Yang Yi
• Yang Huaxu
• Cui Libao
• Zhu Jinming
• Chen Jiaxing
• Wu Zhiheng

Classifications

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• G02F1/13318 Primary

  Circuits comprising a photodetector · CPC title

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• H04N23/81

  for suppressing or minimising disturbance in the image signal generation · CPC title

• H04N23/75 Primary

  by influencing optical camera components · CPC title