Display module and display device

Patent metadata

Field	Value
Publication number	US-12411382-B2
Application number	US-202218283825-A
Country	US
Kind code	B2
Filing date	Aug 30, 2022
Priority date	Aug 30, 2022
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

Provided is a display module. The display module includes: a display panel; an adhesive layer; and a backlight module including a backlight source, a frame body, and an optical film, wherein the frame body includes a bearing stage, a support stage, and a barrier wall, wherein the bearing stage includes a bearing face configured to bear the optical film, the support stage is affixed to the bearing face, and the barrier wall is affixed to a face, facing away from the bearing face, of the support stage; wherein the adhesive layer includes a first adhesive portion and a second adhesive portion.

First claim

The invention claimed is:

1. A display module, comprising:
a display panel;
an adhesive layer; and
a backlight module comprising a backlight source, a frame body, and an optical film, wherein the frame body comprises a bearing stage, a support stage, and a barrier wall, wherein the bearing stage comprises a bearing face configured to bear the optical film, the support stage is affixed to the bearing face, the barrier wall is affixed to a face, facing away from the bearing face, of the support stage, and the barrier wall is disposed on a side, away from an edge of the display module, of the support stage;
wherein the adhesive layer comprises a first adhesive portion, a second adhesive portion, and an overflowed adhesive portion, wherein the first adhesive portion is disposed between the barrier wall and the display panel and is bonded to the barrier wall and the display panel, the second adhesive portion is disposed between the support stage and the display panel and is bonded to the support stage and the display panel, the overflowed adhesive portion is disposed on a side, facing away from the second adhesive portion, of the first adhesive portion and is bonded to the display panel, and the second adhesive portion is closer to an edge of the display module than the first adhesive portion is; and
the display panel comprises a plurality of valid sub-pixels arranged in an array, wherein a maximum width of a cross-section of the overflowed adhesive portion is less than or equal to an overall width of two valid sub-pixels closest to an edge of a display region of the display panel, and the maximum width of the cross-section of the overflowed adhesive portion is greater than 0.

2. The display module according to claim 1 , wherein a minimum width d 1 of a cross-section of the barrier wall and a width d 3 of a side, close to the barrier wall, of a cross-section of the support stage meet: d 1 ≤d 3 /2.

3. The display module according to claim 2 , wherein a face, close to the optical film, of the barrier wall is flush with a face, close to the optical film, of the support stage.

4. The display module according to claim 3 , wherein the minimum width d 1 of the cross-section of the barrier wall and the width d 3 of the side, close to the barrier wall, of the cross-section of the support stage meet: d 1 ≥d 3 /4.

5. The display module according to claim 1 , wherein in a direction perpendicular to a plane of a light exiting face of the display panel, a minimum height h of the barrier wall and a minimum distance H between the support stage and the display panel meet: H/4≤h≤3H/4.

6. The display module according to claim 1 , wherein the display module meets at least one of the following requirements:
in a direction perpendicular to a plane of a light exiting face of the display panel, a minimum distance between the display panel and the support stage is greater than or equal to 0.2 mm; and
in the direction perpendicular to the plane of the light exiting face of the display panel, the minimum distance between the display panel and the support stage is less than or equal to 0.5 mm.

7. The display module according to claim 1 , wherein a maximum width of a cross-section of the adhesive layer is greater than or equal to 1 mm.

8. The display module according to claim 1 , wherein in a direction perpendicular to a plane of a light exiting face of the display panel, a maximum thickness of the overflowed adhesive portion is less than or equal to twice a minimum distance between the display panel and the barrier wall.

9. The display module according to claim 1 , wherein the cross-section of the overflowed adhesive portion comprises an adhesive face and an arc-shaped face, wherein the adhesive face is bonded to the display panel, the arc-shaped face is disposed on a side, facing away from the display panel, of the adhesive face, and a maximum distance between the arc-shaped face and the display panel is less than or equal to a maximum distance between the support stage and the display panel.

10. The display module according to claim 9 , wherein an area S1′ of the cross-section of the overflowed adhesive portion and an area S2′ of a cross-section of the barrier wall meet:

π
×

(

H
0.625

)

2

4

-

S
⁢

1
′

⩽

S
⁢

2
′

;

wherein H represents a minimum distance between the support stage and the display panel.

11. The display module according to claim 9 , wherein relevant dimensions of the barrier wall meet:

{

S
⁢
1

=

π
⁢

r
2

4

+

1
2

×

(

b
+
r

)

×

(

a
-
r

)

r
=

h
⁢
0

S
⁢
2

=

Assignees

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

Inventors

• Cheng Qian
• Wang Hetao
• Gai Xin
• Xiao Chunlei
• Li Fanglin
• Han Tianyang

Classifications

• G02F1/133603 Primary

  with LEDs · CPC title

• G02F1/133607

  the light controlling member including light directing or refracting elements, e.g. prisms or lenses · CPC title

• G02F1/133317

  Intermediate frames, e.g. between backlight housing and front frame · CPC title

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title

• G02F1/1336

  Illuminating devices · CPC title