Display device

Patent metadata

Field	Value
Publication number	US-12159894-B2
Application number	US-202117468716-A
Country	US
Kind code	B2
Filing date	Sep 8, 2021
Priority date	Oct 9, 2020
Publication date	Dec 3, 2024
Grant date	Dec 3, 2024

Abstract

A display device includes a substrate, a photosensitive element formed above the substrate, a signal line formed above the substrate, and a transparent conductive member electrically connected to the signal line and the photosensitive element. In a normal direction of the substrate, the signal line does not overlap with the photosensitive element.

First claim

What is claimed is:

1. A display device comprising:
a substrate;
a photosensitive element formed above the substrate;
a signal line formed above the substrate; and
a transparent conductive member formed above the photosensitive element and the signal line, and electrically connected to the signal line and the photosensitive element;
a first insulating layer formed above the substrate, and covering the photosensitive element;
a second insulating layer formed above the first insulating layer; and
a third insulating layer formed above the second insulating layer;
wherein:
in a normal direction of the substrate, the signal line does not overlap with the photosensitive element,
the transparent conductive member comprises a transparent electrode and a transparent bridging unit,
the transparent bridging unit is electrically connected to the signal line through a first hole, electrically connected to the transparent electrode through a second hole, and electrically connected to the photosensitive element through the transparent electrode
the signal line is formed on the second insulating layer, and the first hole is formed in the third insulating layer to expose a part of the signal line;
the second hole is a connected hole formed in the first insulating layer, the second insulating layer, and the third insulating layer to expose the transparent electrode; and
the transparent bridging unit is formed on the third insulating layer.

2. The display device of claim 1 wherein the signal line is formed at a light receiving side of the photosensitive element.

3. The display device of claim 1 wherein the transparent conductive member has a light transmittance between 81% and 99%.

4. The display device of claim 1 wherein along a normal direction of the substrate, the transparent bridging unit and the photosensitive element are partially overlapped.

5. The display device of claim 4 wherein an overlapped width of the transparent bridging unit and the photosensitive element is smaller than a width of the photosensitive element.

6. The display device of claim 5 wherein the overlapped width of the transparent bridging unit and the photosensitive element is smaller than ⅓ of the width of the photosensitive element.

7. The display device of claim 1 further comprising:
a display pixel formed above the substrate;
wherein the display pixel and the photosensitive element do not overlap when viewed from top.

8. The display device of claim 7 wherein the display pixel comprises a plurality of sub-pixels for emitting light of different colors.

9. The display device of claim 8 wherein the plurality of sub-pixels are electrically connected to corresponding data lines and are electrically connected to a first scan line.

10. The display device of claim 9 wherein the photosensitive element is electrically connected to a second scan line.

11. The display device of claim 7 further comprising a backlight module for providing a backlight light source required by the display pixel.

12. The display device of claim 11 further comprising:
a shading member formed on the substrate;
a buffer layer formed on the substrate and the shading member; and
a transistor formed on the buffer layer;
wherein the shading member blocks light emitted by the backlight module to prevent the light from entering the transistor.

13. The display device of claim 1 wherein the photosensitive element comprises:
two electrodes; and
an amorphous silicon layer formed between the two electrodes.

14. The display device of claim 13 wherein one of the two electrodes is a P electrode, and another one of the two electrodes is an N electrode.

15. The display device of claim 1 wherein a first depth of the first hole is different from a second depth of the second hole.

Assignees

• Innolux Corp

Inventors

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

Classifications

• H10F39/8057

  Optical shielding · CPC title

• H10F39/8033

  Photosensitive area · CPC title

• H10F39/811

  Interconnections · CPC title

• H10F39/198 Primary

  Contact-type image sensors [CIS] · CPC title

• G06V40/1318 Primary

  using electro-optical elements or layers, e.g. electroluminescent sensing · CPC title