Display device

Patent metadata

Field	Value
Publication number	US-12487482-B2
Application number	US-202318704035-A
Country	US
Kind code	B2
Filing date	Apr 19, 2023
Priority date	Apr 22, 2022
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A display device is provided. The display device includes: a first protective cover plate, a second protective cover plate, a first bonding layer, and a display panel; wherein the first bonding layer is disposed between the first protective cover plate and the second protective cover plate and is bonded to the first protective cover plate and the second protective cover plate; and the display panel is disposed on one side of the second protective cover plate distal to the first protective cover plate, and a light-emergent side of the display panel faces the second protective cover plate; wherein a thickness of the first protective cover plate is greater than a thickness of the second protective cover plate.

First claim

The invention claimed is:

1 . A display device, comprising: a first protective cover plate, a second protective cover plate, a first bonding layer, and a display panel; wherein
the first bonding layer is disposed between the first protective cover plate and the second protective cover plate and is bonded to the first protective cover plate and the second protective cover plate; and the display panel is disposed on one side of the second protective cover plate distal to the first protective cover plate, and a light-emergent side of the display panel faces the second protective cover plate; wherein a thickness of the first protective cover plate is greater than a thickness of the second protective cover plate, and the second protective cover plate comprises a protruding part; wherein the first protective cover plate has a first side surface and three second side surfaces; and the second protective cover plate has a third side surface and three fourth side surfaces; wherein the first side surface is adjacent to the third side surface and staggered from the third side surface; and the three second side surfaces are in one-to-one correspondence with the three fourth side surfaces, and each second side surface is adjacent to and coplanar with a corresponding fourth side surface; wherein part of the second protective cover plate disposed between the third side surface and the first side surface is the protruding part.

2 . The display device according to claim 1 , wherein an orthographic projection of the first protective cover plate on a plane where the second protective cover plate is disposed falls within an orthographic projection of the second protective cover plate on the plane where the second protective cover plate is disposed;
and an orthographic projection of the protruding part on the plane where the second protective cover plate is disposed is not covered by the orthographic projection of the first protective cover plate on the plane where the second protective cover plate is disposed.

3 . The display device according to claim 2 , wherein the display panel has a binding region for binding with a driving component, wherein the binding region and the protruding part are disposed on a same side of the display device.

4 . The display device according to claim 1 , wherein the first protective cover plate has a central light-transmitting region and an edge light-shielding region disposed at a periphery of the central light-transmitting region, and the display device further comprises: a light-absorbing ink layer disposed on one side of the first protective cover plate proximal to the second protective cover plate, wherein the light-absorbing ink layer is disposed in the edge light-shielding region;
or, the second protective cover plate has a central light-transmitting region and an edge light-shielding region disposed at a periphery of the central light-transmitting region, and the display device further comprises: a light-absorbing ink layer disposed on one side of the second protective cover plate proximal to the first protective cover plate, wherein the light-absorbing ink layer is disposed in the edge light-shielding region; or, the second protective cover plate has a central light-transmitting region and an edge light-shielding region disposed at a periphery of the central light-transmitting region, and the display device further comprises: a light-absorbing ink layer disposed on one side of the second protective cover plate proximal to the display panel, wherein the light-absorbing ink layer is disposed in the edge light-shielding region.

5 . The display device according to claim 4 , wherein the light-absorbing ink layer is annular, an inner contour line of the light-absorbing ink layer coincides with an outer contour line of the central light-transmitting region, and a width at each position of the light-absorbing ink layer is a same.

6 . The display device according to claim 1 , wherein the thickness of the first protective cover plate ranges from 1.5 mm to 2 mm; the thickness of the second protective cover plate ranges from 0.7 mm to 1.5 mm; and a thickness of the first bonding layer ranges from 0.1 mm to 0.3 mm.

7 . The display device according to claim 1 , wherein the first bonding layer is a planar bonding layer disposed as a whole layer.

8 . The display device according to claim 1 , further comprising: a touch panel disposed between the second protective cover plate and the display panel, a second bonding layer disposed between the touch panel and the second protective cover plate, and a third bonding layer disposed between the touch panel and the display panel;
wherein the second bonding layer is bonded to the touch panel and the second protective cover plate, and the third bonding layer is bonded to the touch panel and the display panel.

9 . The display device according to claim 8 , wherein the second bonding layer and the third bonding layer are both planar bonding layers disposed as whole layers.

10 . The display device according to claim 8 , wherein a thickness of the first bonding layer, a thickness of the second bonding layer, and a thickness of the third bonding layer are equal.

11 . The display device according to claim 1 , wherein the display panel comprises: a color film substrate and an array substrate which are disposed oppositely, and a liquid crystal layer disposed between the color film substrate and the array substrate, wherein the color film substrate is closer to the second protective cover plate than the array substrate; and
the display device further comprises: a backlight module disposed on one side of the display panel distal to the second protective cover plate.

12 . The display device according to claim 11 , wherein the backlight module comprises: a frame body, an optical diaphragm group, a light guide plate, and a reflective sheet which are disposed in the frame body and are sequentially stacked along a direction distal to the display panel, and a side-lit light source disposed in the frame body and disposed opposite to the light guide plate;
the frame body comprises: an iron frame and an adhesive frame connected with the iron frame, wherein the adhesive frame is provided with positioning grooves, and each optical diaphragm in the optical diaphragm group is provided with a positioning protrusion, wherein the positioning protrusion is disposed in the positioning groove, a positioning protrusion in an optical diaphragm in the optical diaphragm group closest to the display panel is provided with a reflective ink layer, the reflective ink layer being disposed on one side of the positioning protrusion distal to the light guide plate; wherein the reflective ink layer is configured to reflect light, incident to the positioning protrusion, emergent from the light guide plate to the reflective sheet.

13 . The display device according to claim 12 , wherein the iron frame is provided with a back plate, both the reflective sheet and the light guide plate are disposed on the back plate, and the backlight module further comprises: a first bonding strip, wherein the first bonding strip is disposed in the frame body and distributed on one side distal to the side-lit light source;
wherein the first bonding strip comprises: a strip-shaped first bonding part and a strip-shaped second bonding part, a thickness of the first bonding part is greater than a thickness of the second bonding part, the first bonding part is bonded to edge parts of the back plate and the light guide plate, and the second bonding part is bonded to edge parts of the back plate and the reflective sheet.

14 . The display d

Assignees

• Beijing Boe Display Tech Co
• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Zhao Tanhong
• Cai Yangyang
• Sun Xiaodi
• Tian Xilei
• Li Gang
• Zhou Qiaoke
• Chen Yawei
• Qu Guojian
• Li Xiang
• Yin Xiaofeng

Classifications

• G02F1/133615 Primary

  Edge-illuminating devices, i.e. illuminating from the side · CPC title

• G02F1/133608

  including particular frames or supporting means · CPC title

• G02F1/133605

  including specially adapted reflectors · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/13338

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