Liquid crystal display device and onboard monitoring device

Patent metadata

Field	Value
Publication number	US-2025085585-A1
Application number	US-202318552903-A
Country	US
Kind code	A1
Filing date	Jun 30, 2023
Priority date	Jun 15, 2023
Publication date	Mar 13, 2025
Grant date	—

Abstract

A liquid crystal display device comprises an infrared light-transmitting area, a light-shielding area, a backlight module, an infrared sensor, an infrared light-transmitting layer, and a first light-shielding layer, wherein the infrared sensor and the infrared light-transmitting layer are disposed in the infrared light-transmitting area, the infrared light-transmitting layer comprises a first color resist layer and a second color resist layer stacked and of different colors, the first light-shielding layer is disposed in the light-shielding area and comprises a first color resist light-shielding layer and a second color resist light-shielding layer stacked and of different colors.

First claim

1 . A liquid crystal display device, comprising an infrared light-transmitting area, and a light-shielding area outside the infrared light-transmitting area, wherein the liquid crystal display device comprises:
a first substrate and a second substrate oppositely disposed; a backlight module disposed on a side of the first substrate away from the second substrate; an infrared sensor disposed on a side of the backlight module away from the first substrate, and disposed in the infrared light-transmitting area; an infrared light-transmitting layer disposed between the second substrate and the first substrate, and disposed in the infrared light-transmitting area, wherein the infrared light-transmitting layer comprises a first color resist layer and a second color resist layer stacked and of different colors; and a first light-shielding layer disposed between the second substrate and the first substrate, and disposed in the light-shielding area; wherein the first light-shielding layer comprises a first color resist light-shielding layer and a second color resist light-shielding layer stacked and of different colors.

2 . The liquid crystal display device of claim 1 , wherein the light-shielding area comprises a first sub light-shielding area disposed around the infrared light-transmitting area, the liquid crystal display device comprises a display area disposed around the first sub light-shielding area, and the first light-shielding layer is disposed in the first sub light-shielding area;
wherein a metal winding section is provided in the first sub light-shielding area and is arranged between the first substrate and the first light-shielding layer; and an orthographic projection of the metal winding section on the first substrate is in an orthographic projection of the first light-shielding layer on the first substrate.

3 . The liquid crystal display device of claim 2 , wherein the first light-shielding layer comprises a third color resist light-shielding layer, wherein the first color resist light-shielding layer, the second color resist light-shielding layer, and the third color resist light-shielding layer are stacked and have different colors.

4 . The liquid crystal display device of claim 3 , wherein material of two of the first color resist light-shielding layer, the second color resist light-shielding layer, and the third color resist light-shielding layer is same as material of the first color resist layer and the second color resist layer respectively; and the two of the first color resist light-shielding layer, the second color resist light-shielding layer, and the third color resist light-shielding layer are provided in a same layer with the first color resist layer and the second color resist layer respectively; and the first color resist light-shielding layer, the second color resist light-shielding layer, and the third color resist light-shielding layer are one of a red color resist layer, a green color resist layer, and a blue color resist layer, respectively.

5 . The liquid crystal display device of claim 3 , wherein the infrared light-transmitting layer comprises a third color resist layer, wherein the first color resist layer, the second color resist layer, and the third color resist layer are stacked and have different colors; a stacking sequence of the first color resist light-shielding layer, the second color resist light-shielding layer, and the third color resist light-shielding layer is based on a same color sequence as a stacking sequence of color resists of the first color resist layer, the second color resist layer, and the third color resist layer.

6 . The liquid crystal display device of claim 3 , wherein the first color resist light-shielding layer, the second color resist light-shielding layer, and the third color resist light-shielding layer are stacked to define first color resist stacked layers in an array, and the first light-shielding layer comprises a first black matrix block disposed between adjacent first color resist stacked layers.

7 . The liquid crystal display device of claim 2 , wherein the first color resist light-shielding layer and the second color resist light-shielding layer define a first color resist stacked layer, and the first light-shielding layer comprises a first black matrix block disposed on a side of the first color resist stacked layer close to the first substrate and overlapped with the first color resist stacked layer.

8 . The liquid crystal display device of claim 7 , wherein the liquid crystal display device comprises a display area between the infrared light-transmitting area and the first sub light-shielding area, a light filter layer between the second substrate and the first substrate, and a second black matrix block; wherein the light filter layer is disposed in the display area and comprises a plurality of color resist blocks of different colors, and the second black matrix block is disposed between adjacent color resist blocks.

9 . The liquid crystal display device of claim 2 , wherein the liquid crystal display device comprises a display area between the infrared light-transmitting area and the first sub light-shielding area, and a second light-shielding layer disposed between the second substrate and the first substrate; wherein the light-shielding area comprises a second sub light-shielding area disposed around the display area, the second light-shielding layer is disposed in the second sub light-shielding area, and the second light-shielding layer comprises a fourth color resist light-shielding layer, a fifth color resist light-shielding layer, and a sixth color resist light-shielding layer stacked and of different colors.

10 . The liquid crystal display device of claim 9 , wherein the fourth color resist light-shielding layer, fifth color resist light-shielding layer, and sixth color resist light-shielding layer are stacked to define second color resist stacked layers in an array, and the second light-shielding layer comprises a third black matrix block disposed between adjacent second color resist stacked layers.

11 . The liquid crystal display device of claim 2 , wherein the liquid crystal display device comprises a display area between the infrared light-transmitting area and the first sub light-shielding area, and a second light-shielding layer disposed on a side of the second substrate and the first substrate; wherein the light-shielding area comprises a second sub light-shielding area disposed around the display area, and the second light-shielding layer is disposed in the second sub light-shielding area; and
wherein the second light-shielding layer comprises a fourth color resist light-shielding layer and a fifth color resist light-shielding layer stacked and of different colors, the fourth color resist light-shielding layer and the fifth color resist light-shielding layer define a second color resist layer, the second light-shielding layer comprises a third black matrix block disposed on a side of the second color resist layer close to the first substrate and overlapped with the second color resist layer.

12 . An onboard monitoring device, comprising a liquid crystal display device including an infrared light-transmitting area and a light-shielding area outside the infrared light-transmitting area, wherein the liquid crystal display device comprises:
a first substrate and a second substrate oppositely disposed; a backlight module disposed on a side of the first substrate away from the second substrate; an infrared sensor disposed on a side of the backlight module away from the first substrate and disposed in the infrared light-transmitting area; an infrared light-transmitting layer disposed between

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Zhou Yunhong
• Wu Teng

Classifications

• A61B5/18

  for vehicle drivers {or machine operators} · CPC title

• G02F2203/11

  involving infrared radiation · CPC title

• G02F1/1335

  Structural association of cells with optical devices, e.g. polarisers or reflectors · CPC title

• G02F1/136222

  Colour filters incorporated in the active matrix substrate · CPC title

• G02F1/1336

  Illuminating devices · CPC title