Display panel and electronic device

Patent metadata

Field	Value
Publication number	US-11366368-B1
Application number	US-202016651250-A
Country	US
Kind code	B1
Filing date	Jan 2, 2020
Priority date	Sep 23, 2019
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

A display panel and an electronic device are provided. The display panel includes a display region and a non-display region. The first polarizer is provided with a first through hole, and the second polarizer is provided with a second through hole. A switchable module is located between the first through hole and the second through hole, and includes an on state and an off state to control light entering the display panel. The display panel provided manually controls whether the electronic device performs an image capturing action, thereby ensuring security and protecting privacy.

First claim

What is claimed is:

1. A display panel comprising: a display region and a non-display region, wherein the display panel further comprises: polarizers including a first polarizer and a second polarizer, wherein the first polarizer and the second polarizer are opposite each other, and the first polarizer is provided with a first through hole, and the second polarizer is provided with a second through hole, the first through hole corresponds to the second through hole, and the first through hole and the second through hole are located in the non-display region; and a switchable module located between the first through hole and the second through hole, including an on state and an off state, and being switchable between the on state and the off state to control light entering the display panel.

2. The display panel as claimed in claim 1 , wherein the display panel further comprises:
a color filter substrate disposed below the first polarizer;
an array substrate disposed on the second polarizer, and disposed opposite the color filter substrate; and
a control module configured for controlling switching of the switchable module between the on state and the off state by controlling a voltage across the switchable module.

3. The display panel as claimed in claim 2 , wherein
the control module includes a first electrode and a second electrode, the first electrode is disposed opposite the second electrode, the first electrode is disposed on the color filter substrate, and the second electrode is disposed on the array substrate.

4. The display panel as claimed in claim 1 , further comprising:
a liquid crystal region located between the first polarizer and the second polarizer, and including a first liquid crystal region and a second liquid crystal region, wherein the second liquid crystal region is surrounded by a frame adhesive, and is separated from the first liquid crystal region by the frame adhesive.

5. The display panel as claimed in claim 4 , wherein the second liquid crystal region is located directly below the first through hole, and disposed to correspond to the first through hole.

6. The display panel as claimed in claim 5 , wherein the switchable module is disposed in the second liquid crystal region.

7. The display panel as claimed in claim 5 , wherein an area of the second liquid crystal region is greater than or equal to an area of the first through hole.

8. The display panel as claimed in claim 1 , wherein the switchable module is a light scattering liquid crystal.

9. The display panel as claimed in claim 8 , wherein material for the light scattering liquid crystal is mixed material of a polymer and a liquid crystal formed by photocuring.

10. The display panel as claimed in claim 1 , further comprising a shielding sheet which blocks the first through hole and is movably disposed above the first through hole to control the light entering the display panel.

11. The display panel as claimed in claim 10 , wherein the shielding sheet is provided with a magnetic conductive portion, a magnet is located on a side of the display panel where the first through hole is located, and the magnet is connected with the shielding sheet by attracting the magnetic conductive portion.

12. An electronic device, comprising: a device body comprising a display panel comprising: a display region and a non-display region, wherein the display panel further comprises: polarizers including a first polarizer and a second polarizer, wherein the first polarizer and the second polarizer are opposite each other, and the first polarizer is provided with a first through hole, and the second polarizer is provided with a second through hole, the first through hole corresponds to the second through hole, and the first through hole and the second through hole are located in the non-display region; a switchable module located between the first through hole and the second through hole, including an on state and an off state, and being switchable between the on state and the off state to control light entering the display panel; a control module configured for controlling switching of the switchable module between the on state and the off state; and a camera module disposed directly below the second through hole and configured for capturing an image in the on state of the switchable module.

13. The electronic device as claimed in claim 12 , wherein the display panel further comprises:
a color filter substrate disposed below the first polarizer;
an array substrate disposed on the second polarizer, and disposed opposite the color filter substrate; and
the control module configured for controlling switching of the switchable module between the on state and the off state by controlling a voltage across the switchable module.

14. The electronic device as claimed in claim 13 , wherein
the control module includes a first electrode and a second electrode, the first electrode is disposed opposite the second electrode, the first electrode is disposed on the color filter substrate, and the second electrode is disposed on the array substrate.

15. The electronic device as claimed in claim 12 , further comprising:
a liquid crystal region located between the first polarizer and the second polarizer, and including a first liquid crystal region and a second liquid crystal region, wherein the second liquid crystal region is surrounded by a frame adhesive, and is separated from the first liquid crystal region by the frame adhesive.

16. The electronic device as claimed in claim 15 , wherein the second liquid crystal region is located directly below the first through hole, and disposed to correspond to the first through hole.

17. The electronic device as claimed in claim 16 , wherein the switchable module is disposed in the second liquid crystal region.

18. The electronic device as claimed in claim 16 , wherein an area of the second liquid crystal region is greater than or equal to an area of the first through hole.

19. The electronic device as claimed in claim 12 , wherein the switchable module is a light-scattering liquid crystal.

20. The electronic device as claimed in claim 19 , wherein material for the light-scattering liquid crystal is mixed material of a polymer and a liquid crystal formed by photocuring.

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd
• Wuhan China Star Optoelectronic Tech Co Ltd

Inventors

• Li Xueyun

Classifications

• G02F1/133528 Primary

  Polarisers · CPC title

• G02F1/137 Primary

  characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering · CPC title

• G02F1/133512

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

• G02F1/133514

  Colour filters · CPC title

• G02F1/133 Primary

  Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements (arrangements or circuits for control of liquid crystal elements in a matrix, not structurally associated with these elements G09G3/36) · CPC title