Display device and manufacturing method of display device

Patent metadata

Field	Value
Publication number	US-11714307-B2
Application number	US-202117789459-A
Country	US
Kind code	B2
Filing date	Aug 26, 2021
Priority date	Sep 11, 2020
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

A display device includes a backlight module; a display module located on a light exiting side of the backlight module; and a housing accommodating the backlight module and the display module. The display module includes a display panel including an array substrate and a color film substrate arranged opposite to each other. The color film substrate is located between the array substrate and the backlight module. A first polarizer located on one side of the array substrate away from the color film substrate. A manufacturing method of a display device is also provided.

First claim

What is claimed is:

1. A display device, comprising:
a backlight module;
a display module located on a light exiting side of the backlight module; and
a housing accommodating the backlight module and the display module,
wherein the display module comprises:
a display panel comprising an array substrate and a color film substrate arranged opposite to each other, wherein the color film substrate is located between the array substrate and the backlight module; and
a first polarizer located on one side of the array substrate away from the color film substrate;

wherein the display panel has a display area and a non-display area surrounding the display area, and the display device further comprises: a photosensitive unit provided within the housing and located on one side of the color film substrate away from the array substrate, wherein the photosensitive unit is located in the non-display area;
wherein the display module further comprises: a second light shielding layer located on one side of the photosensitive unit adjacent to the color film substrate, and having a first hollowed-out area, wherein an orthographic projection of the light incident area of the photosensitive unit on the array substrate is at least partially coincident with an orthographic projection of the first hollowed-out area of the second light shielding layer on the array substrate;
wherein the array substrate comprises a gate driving circuit located in the non-display area, and the display module also comprises: a first light shielding layer located on one side of the array substrate away from the backlight module, wherein an orthographic projection of the first light shielding layer on the array substrate is located in the non-display area, and at least partially covers the gate driving circuit; and
wherein the array substrate further comprises;
a plurality of first thin film transistors located in the non-display area; and
a plurality of second thin film transistors located in the non-display area and adjacent to one row or one column of first thin film transistors among the plurality of first thin film transistors which are located at an edge of the display area,
wherein at least one of the plurality of second thing film transistors does not comprise a drain metal layer or an active layer.

2. The display device according to claim 1 , wherein the second light shielding layer comprises:
an ink light shielding layer on one side of the array substrate away from the color film substrate; or
an ink light shielding layer on the surface of one side of the color film substrate adjacent to the photosensitive unit; or
a black matrix located within the color film substrate.

3. The display device according to claim 1 , wherein the first polarizer has a second hollowed-out area or a depolarization area, and the orthographic projection of the light incident area of the photosensitive unit on the array substrate or the orthographic projection of the first hollowed-out area of the second light shielding layer on the array substrate is located within an orthographic projection of the second hollowed-out area or the depolarization area of the first polarizer on the array substrate.

4. The display device according to claim 1 , wherein the display panel further comprises:
a liquid crystal layer located between the array substrate and the color film substrate; and
a first frame sealant located between the color film substrate and the array substrate and enclosing the liquid crystal layer.

5. The display device according to claim 1 , wherein the array substrate comprises:
a first base substrate;
a first anti-reflection layer located on the first base substrate; and
a first metal layer located on one side of the first anti-reflection layer adjacent to the backlight module,
wherein an orthographic projection of the first metal layer on the first base substrate is completely coincident with an orthographic projection of the first anti-reflection layer on the first base substrate, or located within the orthographic projection of the first anti-reflection layer on the first base substrate.

6. The display device according to claim 1 , wherein the first light shielding layer comprises:
an ink printing layer located between the first polarizer and the array substrate, wherein the ink printing layer is in contact with the first polarizer or the array substrate; or
an ink printing layer located on one side of the first polarizer away from the array substrate.

7. The display device according to claim 1 , wherein the display panel has a display area and a non-display area surrounding the display area, and the array substrate comprises:
a first base substrate;
a second anti-reflection layer located on the first base substrate;
a second metal layer located on one side of the second anti-reflection layer away from the first base substrate; and
a gate driving circuit located on one side of the second metal layer away from the first base substrate,
wherein the second anti-reflection layer, the second metal layer and the gate driving circuit are all located in the non-display area, and a portion where orthographic projections of the second anti-reflection layer and the second metal layer on the first base substrate are coincident with each other at least partially covers an orthographic projection of the gate driving circuit on the first base substrate.

8. The display device according to claim 1 , wherein the housing comprises: a rear portion located on one side of the backlight module away from the color film substrate and a plurality of side portions connected to the rear portion, and the plurality of side portions and the rear portion form an inner space of the housing;
wherein the array substrate comprises:
a first portion, wherein an orthographic projection of the first portion on the rear portion is completely or partially coincident with an orthographic projection of the color film substrate on the rear portion; and
a second portion, wherein an orthographic projection of the second portion on the rear portion and the orthographic projection of the color film substrate on the rear portion are not coincident with each other,
wherein an orthographic projection of the backlight module on the rear portion is completely coincident with an orthographic projection of the array substrate on the rear portion or located within the orthographic projection of the array substrate on the rear portion, and the second portion, the backlight module, the color film substrate and the side portion enclose an accommodating space; and
the display module further comprises: a flexible circuit board located on one side of the second portion adjacent to the color film substrate, and a driving circuit board electrically connected to the flexible circuit board, wherein the driving circuit board and at least part of the flexible circuit board are arranged within the accommodating space.

9. A manufacturing method of a display device, comprising:
providing a display panel having a display area and a non-display area surrounding the display area, wherein the display panel comprises an array substrate and a color film substrate arranged opposite to each other, and the array substrate comprises a gate driving circuit located in the non-display area;
attaching a first polarizer to the array substrate, and forming a first light shielding layer on one side of the array substrate away from the color film substrate, wherein an orthographic projection of the first light shielding layer on the array substrate is located in the non-display area and at least partially covers the gate driving circuit;
binding a driving chip on the array substrate to which the first polarizer has been attached, and

Assignees

• Hefei Boe Optoelectronics Tech
• Boe Technology Group Co Ltd

Inventors

• Yang Jie
• Zang Yuansheng
• Zhang Heng
• Wang Sheng
• Wang Hui
• Chen Junsheng
• Qu Feng
• Wang Yan

Classifications

• G02F1/133314 Primary

  Back frames · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/13452

  Conductors connecting driver circuitry and terminals of panels · CPC title

• G02F1/133322

  Mechanical guidance or alignment of LCD panel support components · CPC title