IP Library Granted Patent US 10,859,878
Granted Patent B2
US 10,859,878 · App. 16/552,259 · Granted Dec 8, 2020

Display device

Inventors: Tomokazu Ishikawa (Tokyo, JP); Masaru Nakakomi (Tokyo, JP)
Assignee: JAPAN DISPLAY INC.
G02F1/1339G02F1/133711H01L27/322H01L29/4908
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Quick Facts
Patent No.
US 10,859,878
App. No.
16/552,259
Granted
Dec 8, 2020
Kind
B2
Abstract

According to one embodiment, a display device comprises a first substrate, a second substrate opposed to the first substrate and including a first organic film, a first convex portion extending in a first direction, a second convex portion extending in a second direction intersecting the first direction, and a third convex portion aligned with the first convex portion in the second direction and extending in the first direction, and a sealing member located in a second area around a first area in which an image is displayed, wherein the first convex portion, the second convex portion and the third convex portion are located between the first organic film and the sealing member.

Claims (47)

1. A display device comprising:

a first substrate;

a second substrate opposed to the first substrate and including a first organic film, a first convex portion extending in a first direction, a second convex portion extending in a second direction intersecting the first direction, and a third convex portion aligned with the first convex portion in the second direction and extending in the first direction; and

a sealing member located in a second area around a first area in which an image is displayed to bond the first substrate and the second substrate together,

wherein the first convex portion, the second convex portion and the third convex portion are located between the first organic film and the sealing member, and

the first convex portion and the third convex portion are connected to each other via a connection portion on a side opposite to the first substrate.

2. The display device of claim 1 , wherein:

the second substrate includes the first convex portion, the third convex portion, and a first concave portion configured by the connection portion; and

the first concave portion has a depth that is greater than a thickness of the connection portion.

3. The display device of claim 1 , wherein:

the second substrate is aligned with the second convex portion and includes a fourth convex portion extending in the second direction;

the fourth convex portion is superposed on the sealing member; and

a first interval between the first convex portion and the third convex portion is smaller than a second interval between the second convex portion and the fourth convex portion.

4. The display device of claim 1 , wherein the first convex portion and the third convex portion are located closer to a first end portion of the second substrate than the second convex portion.

5. A display device comprising:

a first substrate;

a second substrate opposed to the first substrate and including a first organic film, a first convex portion extending in a first direction, a second convex portion extending in a second direction intersecting the first direction, and a third convex portion aligned with the first convex portion in the second direction and extending in the first direction; and

a sealing member located in a second area around a first area in which an image is displayed to bond the first substrate and the second substrate together,

wherein the first convex portion, the second convex portion and the third convex portion are located between the first organic film and the sealing member, and

the first convex portion and the third convex portion extend from the second convex portion.

6. The display device of claim 5 , wherein the first convex portion, the second convex portion and the third convex portion each have a top portion that is in contact with the sealing member.

7. The display device of claim 6 , wherein:

the second substrate includes a first alignment film; and

the top portion of each of the first convex portion, the second convex portion and the third convex portion is exposed from the first alignment film.

8. A display device comprising:

a first substrate;

a second substrate opposed to the first substrate and including a first organic film, a first convex portion extending in a first direction, a second convex portion extending in a second direction intersecting the first direction, and a third convex portion aligned with the first convex portion in the second direction and extending in the first direction; and

a sealing member located in a second area around a first area in which an image is displayed to bond the first substrate and the second substrate together,

wherein the first convex portion, the second convex portion and the third convex portion are located between the first organic film and the sealing member,

the first substrate includes a second organic film, a fifth convex portion including the second organic film, and a sixth convex portion aligned with the fifth convex portion and including the second organic film, and

the fifth convex portion and the sixth convex portion extend in the second direction and are superposed on the sealing member.

9. The display device of claim 8 , wherein:

the first substrate includes a second concave portion located between the fifth convex portion and the sixth convex portion; and

the second convex portion is superposed on the second concave portion.

10. The display device of claim 8 , wherein the second organic film includes the first organic film and the second organic film located on the first organic film.

11. The display device of claim 8 , wherein the first substrate includes a seventh convex portion extending in the first direction from the fifth convex portion.

12. The display device of claim 8 , wherein:

the first substrate further includes a first insulating substrate, a first insulating layer located on the first insulating substrate, a second insulating layer located on the first insulating substrate, a third insulating layer located on the second insulating layer, a second alignment film located on the third insulating layer, and a groove portion located in the second area;

the second organic film is located between the second insulating layer and the third insulating layer;

the groove portion is formed through the second insulating layer and the second organic film;

the fifth convex portion and the sixth convex portion are located in the groove portion; and

the fifth convex portion and the sixth convex portion are exposed from the second alignment film and in contact with the sealing member.

13. The display device of claim 12 , wherein the fifth convex portion and the sixth convex portion are formed by stacking the second organic film and the third insulating layer.

14. The display device of claim 8 , wherein the first substrate further includes a metal line located between the fifth convex portion and the sixth convex portion.

15. The display device of claim 14 , wherein:

the second substrate further includes a first concave portion between the first convex portion and the third convex portion and the second convex portion; and

the first concave portion is superposed on the metal line.

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 27, 2019
From: ISHIKAWA, TOMOKAZU; NAKAKOMI, MASARU
To: JAPAN DISPLAY INC.
Reel/Frame 050181/0598 →
Priority Claims (1)
JP 2018-158448 · Aug 27, 2018 · national
Continuity (1)
Related Publication 20200064665A1 · Feb 27, 2020