IP Library › Granted Patent US 11,137,635
Granted Patent B2
US 11,137,635 · App. 16/529,958 · Granted Oct 5, 2021

Display device including an adhesive layer and a non-adhesive layer

Inventors: Emi Higano (Tokyo, JP); Toshiyuki Higano (Tokyo, JP); Shigesumi Araki (Tokyo, JP)
Assignee: Japan Display Inc.
G02F1/133528G02F1/133305G02F1/133514G02F1/134309G02F2202/28
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Quick Facts
Patent No.
US 11,137,635
App. No.
16/529,958
Granted
Oct 5, 2021
Kind
B2
Abstract

According to one embodiment, a display device includes a display panel including a display area which displays images, a non-display area surrounding the display area, and a bend area in the non-display area, a first optical film located on the display panel and comprising an end portion which overlaps the bend area, an adhesive layer which adheres the first optical film and the display panel together and a non-adhesive layer located between the first optical film and the display panel, while overlapping the bend area, wherein the non-adhesive layer is in contact with an upper surface of the display panel.

Claims (46)

1. A display device comprising:

a display panel comprising a display area which displays images, a non-display area surrounding the display area, and a bend area in the non-display area;

a first optical film located on the display panel and comprising an end portion which overlaps the bend area; and

an adhesive layer and a non-adhesive layer located between the first optical film and the display panel and in contact with an upper surface of the display panel, wherein

the adhesive layer overlaps the display area in a plan view, and adheres the first optical film and the display panel to each other,

the non-adhesive layer overlaps the bend area in the plan view,

the first optical film is not adhered to the display panel in the bend area by the non-adhesive layer and is not bent, and

an end of the first optical film overlaps the bend area in the plan view.

2. The display device of claim 1 , wherein

the non-adhesive layer is a part of the adhesive layer, and

the non-adhesive layer is between the adhesive layer and the display panel in the bend area.

3. The display device of claim 1 , wherein the non-adhesive layer is made of silicone and soot.

4. The display device of claim 1 , wherein an adhesion between the adhesive layer and the non-adhesive layer is greater than an adhesion between the display panel and the non-adhesive layer.

5. The display device of claim 1 , wherein an adhesion between the adhesive layer and the non-adhesive layer is less than an adhesion between the display panel and the non-adhesive layer.

6. The display device of claim 1 , wherein a lower surface of the first optical film is in contact with the non-adhesive layer.

7. The display device of claim 1 , further comprising:

a second optical film located under the display panel and overlapping the display area, wherein

the bend area includes a bending start point on a side of the display area, and

an end portion of the second optical film overlaps the bending start point.

8. The display device of claim 1 , wherein

the display panel further comprises an inorganic film located in the display area,

the bend area includes a bending start point on a side of the display area, and

an end portion of the inorganic film is located at the bending start point.

9. A display device comprising:

a display panel which comprises a display area which displays images, a non-display area surrounding the display area, and a bend area in the non-display area;

a first optical film located on the display panel and comprising an end portion which overlaps the bend area; and

an adhesive layer and a non-adhesive layer located between which adheres the first optical film and the display panel, wherein

the display panel is bent in the bend area,

the adhesive layer overlaps the display area in a plan view, and adheres the first optical film and the display panel to each other,

the non-adhesive layer overlaps the bend area in the plan view,

the first optical film is not adhered to the display panel in the bend area by the non-adhesive layer and is not bent, and

an end portion of the first optical film is spaced from the display panel in the bend area.

10. The display device of claim 9 , wherein the non-adhesive layer has a portion that is in contact with the adhesive layer in the bend area.

11. The display device of claim 9 , wherein the non-adhesive layer is made of silicone and soot.

12. The display device of claim 9 , wherein the non-adhesive layer is attached to the first optical film in the bend area.

13. The display device of claim 9 , wherein

the display panel comprises an insulating substrate in contact with the adhesive layer, and

the non-adhesive layer is attached to the insulating substrate in the bend area.

14. The display device of claim 9 , further comprising:

a second optical film located under the display panel and overlapping the display area, wherein

the bend area includes a bending start point on a side of the display area, and

an end portion of the second optical film overlaps the bending start point.

15. The display device of claim 9 , wherein

the display panel further comprises an inorganic film located in the display area,

the bend area includes a bending start point on a side of the display area, and

an end portion of the inorganic film is located at the bending start point.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 2, 2019
From: HIGANO, EMI; HIGANO, TOSHIYUKI; ARAKI, SHIGESUMI
To: JAPAN DISPLAY INC.
Reel/Frame 049940/0168 →
Priority Claims (1)
JP JP2018-152338 · Aug 13, 2018 · national
Continuity (1)
Related Publication 20200050055A1 · Feb 13, 2020
Cited By (2)
US 12,518,657 US 12,740,031