Liquid crystal display comprising a front camera disposed inside a through hole that forms a light channel and extends through the liquid crystal display, electronic device comprising the same

Patent metadata

Field	Value
Publication number	US-11048294-B2
Application number	US-201716608560-A
Country	US
Kind code	B2
Filing date	Jun 26, 2017
Priority date	Apr 25, 2017
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

A liquid crystal display (LCD), an electronic device, and an LCD manufacturing method, where the LCD includes transparent material layers and non-transparent material layers that are disposed in a stacked mode. There is a local transparent region on the LCD. A non-transparent material is applied to the several non-transparent material layers in the local transparent region to form a transparent channel in the local transparent region along a stacking direction. An optical component such as a camera, an ambient light sensor, or an optical fingerprint sensor is completely or partially disposed in the transparent channel of the LCD display.

First claim

What is claimed is:

1. An electronic device, comprising:
a body comprising a front camera that is disposed inside the body; and
a liquid crystal display (LCD) coupled to the body, wherein the LCD comprises a cover glass, an optically clear adhesive (OCA) layer, a first polarizer, a first glass substrate, a color film (CF) layer, a thin film transistor (TFT) layer, a second glass substrate, a second polarizer, and a backlight module,
wherein a through hole is provided through the OCA layer, the first polarizer, the first glass substrate, the CF layer, the TFT layer, the second glass substrate, the second polarizer, and the backlight module to form a light channel in the LCD for ambient light coming from outside of the electronic device, passing through the cover glass and the light channel, and entering into the front camera,
wherein the cover glass covers the through hole,
wherein the front camera is disposed in whole or in part inside the through hole and is covered by the cover glass;
wherein the LCD further comprises a metal line,
wherein the metal line is distributed around the light channel and is between the TFT layer and the CF layer,
wherein the electronic device further comprises a material shielding the metal line, and
wherein the material shielding the metal line is disposed on an inner surface of the cover glass and is disposed around a circumference of the light channel preventing liquid crystal from leakage.

2. The electronic device of claim 1 , further comprising the liquid crystal that is filled between the CF layer and the TFT layer.

3. The electronic device of claim 1 , wherein the OCA layer is formed by a solid OCA or a liquid OCA, wherein a display area of the LCD comprises an outer perimeter, and wherein the light channel is disposed in a location within the outer perimeter.

4. The electronic device of claim 1 , further comprising:
a first alignment film; and
a second alignment film,
wherein the first alignment film is disposed on a surface of the CF layer facing the TFT layer,
wherein the second alignment film is disposed on a surface of the TFT layer facing the CF layer, and
wherein the first alignment film and the second alignment film each has a hole in a region corresponding to the light channel.

5. The electronic device of claim 1 , wherein the cover glass, the OCA layer, the first polarizer, the first glass substrate, the CF layer, the TFT layer, the second glass substrate, the second polarizer, and the backlight module are disposed in a stacking order.

6. The electronic device of claim 1 , wherein the cover glass is not hollowed out in a region corresponding to the light channel.

7. An electronic device, comprising:
a body comprising a front camera disposed inside the body; and
a liquid crystal display (LCD) coupled to the body, wherein the LCD comprises a cover glass, an optically clear adhesive (OCA) layer, a first polarizer, a first glass substrate, a color film (CF) layer, a thin film transistor (TFT) layer, a second glass substrate, a second polarizer, and a backlight module,
wherein a through hole is provided through the first polarizer, the CF layer, the TFT layer, the second polarizer, and the backlight module to form a light channel in the LCD for ambient light coming from outside of the electronic device, passing through the cover glass and the light channel, and entering into the front camera,
wherein the front camera is disposed in whole or in part inside the through hole,
wherein the cover glass, the OCA layer, the first glass substrate, and the second glass substrate cover the front camera and are not hollowed out in a region corresponding to the light channel,
wherein the LCD further comprises a metal line,
wherein the metal line is distributed around the light channel region and is between the TFT layer and the CF layer,
wherein the electronic device further comprises a material shielding the metal line, and
wherein the material shielding the metal line is disposed on an inner surface of the cover glass and is disposed around a circumference of the light channel preventing liquid crystal from leakage.

8. The electronic device of claim 7 , further comprising the liquid crystal that is filled between the CF layer and the TFT layer.

9. The electronic device of claim 7 , wherein the OCA layer is formed by a solid OCA or a liquid OCA.

10. The electronic device of claim 7 , wherein the through hole of the first polarizer is filled with a light transmissive filler.

11. The electronic device of claim 10 , wherein the light transmissive filler is formed from a solid OCA or a liquid OCA.

12. The electronic device of claim 7 , further comprising a first alignment film and a second alignment film, wherein the first alignment film is on a surface of the CF layer facing the TFT layer, wherein the second alignment film is on a surface of the TFT layer facing the CF layer, and wherein the first alignment film and the second alignment film are not hollowed out in the region corresponding to the light channel.

13. The electronic device of claim 7 , wherein an area of the light channel between the first glass substrate and the second glass substrate has liquid the crystal.

14. The electronic device of claim 7 , wherein a display area of the LCD comprises an outer perimeter, and wherein the light channel is disposed in a location within the outer perimeter.

15. A liquid crystal display (LCD) configured to be used in an electronic device with a front camera, the LCD comprising:
a cover glass, an optically clear adhesive (OCA) layer, a first polarizer, a first glass substrate, a color film (CF) layer, a thin film transistor (TFT) layer, a second glass substrate, a second polarizer, and a backlight module which are disposed in a stacking order,
wherein a through hole is provided through the OCA layer, the first polarizer, the first glass substrate, the CF layer, the TFT layer, the second glass substrate, the second polarizer, and the backlight module to form a light channel in the LCD for ambient light coming from outside of the electronic device, passing through the cover glass and the light channel, and entering into the front camera when the front camera is disposed in whole or in part inside the through hole and is covered by the cover glass,
wherein the LCD further comprises a metal line,
wherein the metal line is distributed around the light channel region and is between the TFT layer and the CF layer,
wherein the electronic device further comprises a material shielding the metal line, and
wherein the material shielding the metal line is disposed on an inner surface of the cover glass and is disposed around a circumference of the light channel preventing liquid crystal from leakage.

Assignees

• Huawei Tech Co Ltd

Inventors

• Yin Bangshi
• Yang Fan
• Yan Bin
• Xue Kangle
• Chen Xiaomeng

Classifications

• H04N2007/145

  Handheld terminals · CPC title

• H04M1/0264

  for a camera module assembly · CPC title

• G06F1/1643

  the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615) · CPC title

• G06F1/1605 Primary

  Multimedia displays, e.g. with integrated or attached speakers, cameras, microphones · CPC title

• G02F1/1337

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title