IP Library Granted Patent US 10,061,152
Granted Patent B2
US 10,061,152 · App. 15/262,532 · Granted Aug 28, 2018

Display device

Inventor: Katsuhiro Kato (Tokyo, JP)
Assignee: Japan Display Inc.
G02F1/133512G02F1/134309G02F1/136286G02F2001/133302G02F2201/123G02F2202/28
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Quick Facts
Patent No.
US 10,061,152
App. No.
15/262,532
Granted
Aug 28, 2018
Kind
B2
Abstract

According to one embodiment, a display device includes a display module including a peripheral area located outside a display area, a cover member including a phototransmissive region and a light-shielding region, and a ultraviolet-cured resin layer which bonds the display module to the cover member, includes first and second portions, and contains polar monomers as a monomer component. A transparent first electrode is interposed between the cover member and the display module to cover the phototransmissive region. A second electrode is separated from the first electrode and extends along the first electrode in an area corresponding to the peripheral area. The first and second electrodes apply an electric field to the part of the first portion to orient the polar monomers.

Claims (66)

1. A display device comprising:

a display module comprising:

a display area which displays an image;

a peripheral area which has a frame shape and is located outside the display area; and

a mounting portion which is provided in the peripheral area and mounts a signal supply source thereon;

a cover member comprising:

a phototransmissive region facing the display area; and

a light-shielding region facing the peripheral area;

an ultraviolet-cured resin layer which bonds the display module with the cover member, includes a first portion and a second portion, and contains polar monomers as a monomer component, the first portion being in contact with a frame portion adjacent to the display area of the light-shielding region, the second portion being in contact with the phototransmissive region;

a transparent first electrode which is interposed between the cover member and the display module, and is provided so as to cover an entire part of the phototransmissive region; and

a second electrode which is interposed between the cover member and the display module, and is provided so as to be separated from the first electrode and extend along the first electrode in an area corresponding to the peripheral area in which the mounting portion of the display module is provided, the second electrode being provided such that a part of the first portion goes into a gap between the first electrode and the second electrode, wherein

the first and second electrodes apply an electric field to the part of the first portion to orient the polar monomers.

2. The display device of claim 1 , wherein

the first and second electrodes are provided on a surface of the cover member on a side facing the display module.

3. The display device of claim 1 , wherein

the second electrode is separated from the first electrode and has a frame shape surrounding the first electrode in the light-shielding region on a surface of the cover member on a side facing the display module.

4. The display device of claim 2 , wherein

the second electrode is separated from the first electrode and has a frame shape surrounding the first electrode in the light-shielding region on the surface of the cover member on the side facing the display module.

5. The display device of claim 1 , wherein

the phototransmissive region is rectangular,

the first electrode is rectangular, corresponding to a shape of the phototransmissive region, and

the second electrode is separated from the first electrode and has a rectangular frame shape surrounding the first electrode.

6. The display device of claim 2 , wherein

the phototransmissive region is rectangular,

the first electrode is rectangular, corresponding to a shape of the phototransmissive region, and

the second electrode is separated from the first electrode and has a rectangular frame shape surrounding the first electrode.

7. The display device of claim 3 , wherein

the phototransmissive region is rectangular,

the first electrode is rectangular, corresponding to a shape of the phototransmissive region, and

the second electrode is separated from the first electrode and has a rectangular frame shape surrounding the first electrode.

8. The display device of claim 4 , wherein

the phototransmissive region is rectangular,

the first electrode is rectangular, corresponding to a shape of the phototransmissive region, and

the second electrode is separated from the first electrode and has a rectangular frame shape surrounding the first electrode.

9. The display device of claim 1 , wherein

the ultraviolet-cured resin layer comprises an acrylic resin.

10. The display device of claim 2 , wherein

the ultraviolet-cured resin layer comprises an acrylic resin.

11. The display device of claim 3 , wherein

the ultraviolet-cured resin layer comprises an acrylic resin.

12. The display device of claim 5 , wherein

the ultraviolet-cured resin layer comprises an acrylic resin.

13. A display device comprising:

a display panel comprising:

a display area which displays an image; and

a peripheral area which has a frame shape and is located outside the display area;

a cover member comprising:

a phototransmissive region facing the display area; and

a light-shielding region facing the peripheral area;

a ultraviolet-cured resin layer which bonds the display panel with the cover member and contains polar monomers as a monomer component;

a transparent first electrode which is provided between the cover member and the display panel so as to cover an entire part of the phototransmissive region; and

a second electrode provided between the cover member and the display panel, the second electrode being separated from the first electrode and extending along the first electrode in the peripheral area of the display panel, wherein

the ultraviolet-cured resin layer is provided in a gap between the first electrode and the second electrode, and

the polar monomers are oriented in a direction of an electric field formed between the first electrode and the second electrode.

14. The display device of claim 13 , wherein

the first electrode and the second electrode are provided on a surface of the cover member on a side facing the display panel.

15. The display device of claim 13 , wherein

the second electrode is separated from the first electrode and has a frame shape surrounding the first electrode in the light-shielding area on a surface of the cover member on a side facing the display panel.

16. The display device of claim 14 , wherein

the second electrode is separated from the first electrode and has a frame shape surrounding the first electrode in the light-shielding area on the surface of the cover member on the side facing the display panel.

17. The display device of claim 13 , wherein

the phototransmissive region is rectangular,

the first electrode is rectangular, corresponding to a shape of the phototransmissive region, and

the second electrode is separated from the first electrode and has a rectangular frame shape surrounding the first electrode.

18. The display device of claim 13 , wherein

the ultraviolet-cured resin layer includes acrylic resin.

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 Sep 12, 2016
From: KATO, KATSUHIRO
To: JAPAN DISPLAY INC.
Reel/Frame 039702/0434 →
Priority Claims (1)
JP 2015-180582 · Sep 14, 2015 · national
Continuity (1)
Related Publication 20170075165A1 · Mar 16, 2017