Display device

Patent metadata

Field	Value
Publication number	US-11789326-B2
Application number	US-202217669390-A
Country	US
Kind code	B2
Filing date	Feb 11, 2022
Priority date	Mar 3, 2021
Publication date	Oct 17, 2023
Grant date	Oct 17, 2023

Abstract

A display device includes a backlight module and a display panel. The display panel is disposed on the backlight module and includes two substrates, a sensor, and a light-shielding element. The sensor is disposed between the two substrates. The light-shielding element at least partially surrounds the sensor. A height of the light-shielding element is greater than a height of the sensor.

First claim

What is claimed is:

1. A display device, comprising:
a backlight module; and
a display panel disposed on the backlight module and comprising:
two substrates;
a sensor disposed between the two substrates; and
a light-shielding element at least partially surrounding the sensor;

wherein a height of the light-shielding element is greater than a height of the sensor, and
wherein a portion of the light-shielding element is further extended between the sensor and the backlight module.

2. The display device of claim 1 , wherein an extension length of the portion of the light-shielding element is greater than or equal to a thickness of the sensor.

3. The display device of claim 1 , wherein the portion of the light-shielding element is in contact with the sensor and is a conductor.

4. The display device of claim 1 , wherein the light-shielding element comprises a light-absorbing element, a light-reflecting element, or a combination of the above.

5. A display device, comprising:
a backlight module;
a display panel disposed on the backlight module and comprising:
two substrates;
a sensor disposed between the two substrates; and
a light-shielding element at least partially surrounding the sensor, wherein a height of the light-shielding element is greater than a height of the sensor; and

an insulating layer having a recess, wherein the light-shielding element is disposed in the recess.

6. The display device of claim 5 , wherein the sensor is disposed in the recess and on the light-shielding element.

7. A display device, comprising:
a backlight module; and
a display panel disposed on the backlight module and comprising:
two substrates;
a sensor disposed between the two substrates; and
a light-shielding element, wherein a portion of the light-shielding element is extended between the sensor and the backlight module;

wherein an extension length of the portion of the light-shielding element is greater than or equal to a thickness of the sensor.

8. The display device of claim 7 , wherein a height of the portion of the light-shielding element is smaller than a height of the sensor.

9. The display device of claim 7 , wherein the light-shielding element comprises a light-absorbing element, a light-reflecting element, or a combination of the above two.

10. The display device of claim 7 , wherein the display panel further comprises:
a bottom electrode disposed between the sensor and the backlight module, wherein the bottom electrode is in contact with the sensor and is used as the portion of the light-shielding element extended between the sensor and the backlight module.

11. The display device of claim 10 , wherein the display panel further comprises:
a plurality of signal wires used as another portion of the light-shielding element, wherein the sensor is disposed between the plurality of signal wires, and the bottom electrode is disposed between the plurality of signal wires and the backlight module.

12. The display device of claim 11 , wherein the signal wires are separated from the bottom electrode via an insulating layer, and the signal wires, the insulating layer, and the bottom electrode form a capacitor.

13. The display device of claim 11 , wherein the signal wires are in contact with the bottom electrode.

14. The display device of claim 11 , wherein the display panel further comprises:
an insulating layer covering the sensor, and a surface of the insulating layer presents an arc shape, wherein the signal wires cover the insulating layer and have an opening exposing the sensor.

15. The display device of claim 14 , wherein a maximum width of the opening is between 0.6 and 1.5 times a maximum width of the sensor.

16. The display device of claim 14 , wherein the display panel further comprises:
a plurality of data lines, wherein the plurality of signal wires are overlapped with the plurality of data lines respectively.

17. The display device of claim 14 , wherein the light-shielding element further comprises:
a light-shielding pattern disposed between two adjacent signal wires and surrounding the sensor.

18. The display device of claim 17 , wherein the light-shielding pattern and the plurality of signal wires belong to a same conductive layer.

19. The display device of claim 14 , wherein the light-shielding element further comprises:
a plurality of light-shielding patterns disposed between two adjacent signal wires and disposed at opposite sides of the sensor facing a plurality of opening regions.

Assignees

• Innolux Corp

Inventors

• Liao Hsiao Feng
• Li Shu-Fen
• Chien Chuan-Chi
• Chen Po-Yang
• Yao I-An

Classifications

• H10F39/8057

  Optical shielding · CPC title

• H10F39/198 Primary

  Contact-type image sensors [CIS] · CPC title

• G02F1/136209 Primary

  Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element · CPC title

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• G02F1/133345

  Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence) · CPC title