IP Library Granted Patent US 10,514,577
Granted Patent B2
US 10,514,577 · App. 16/029,716 · Granted Dec 24, 2019

Liquid crystal display device and method of manufacturing the same

Inventor: Ayumi Mori (Minato-ku, JP)
Assignee: Japan Display Inc.
G02F1/1339G02F1/13394G02F1/133351G02F1/133514G02F2001/13396G02F2001/133388
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Quick Facts
Patent No.
US 10,514,577
App. No.
16/029,716
Granted
Dec 24, 2019
Kind
B2
Abstract

A first organic insulating film is arranged in a circumference area outside an active area on a first substrate. A circumference color filter is arranged in the circumference area on a second substrate. A second organic insulating film covers the circumference color filter. A seal material is arranged between the first and second organic insulating films to attach the first substrate and the second substrate. The seal material extends up to a position in which end portions of the first and second substrates overlap. A first spacer is arranged between the first and second organic insulating films in the circumference area. The first spacer is arranged on an active area side in the seal material. A second spacer is formed between the first and second organic insulating films in a position in which the end portions of the substrates overlap.

Claims (47)

1. A liquid crystal display device, comprising:

a first substrate including;

a first insulating substrate, and

a first organic insulating film including a first concave portion and arranged on the first insulating substrate in a circumference area outside an active area for displaying images,

a second substrate including;

a second insulating substrate, and

a second organic insulating film arranged on the second insulating substrate facing the first substrate in the circumference area,

a seal material arranged between the first organic insulating film and the second organic insulating film to attach the first substrate and the second substrate;

a first spacer arranged between the first organic insulating film and the second organic insulating film, the first spacer being arranged on an active area side in the seal material;

a second spacer arranged between the first organic insulating film and the second organic insulating film, the second spacer being arranged closer to a first substrate end of the first insulating substrate than the first spacer in the seal material; and

a liquid crystal layer held in a gap surrounded with the seal material between the first substrate and the second substrate,

wherein the first concave portion is arranged between the first spacer and the second spacer,

the first spacer contacts both of the first substrate and the second organic insulating film, and

the second spacer contacts the first substrate and is separated from the second organic insulating film.

2. The liquid crystal display device according to claim 1 , wherein the seal material is arranged in the first concave portion and contacts both of the first organic insulating film and the second organic insulating film.

3. The liquid crystal display device according to claim 1 , wherein the first spacer is taller than the second spacer.

4. The liquid crystal display device according to claim 3 , wherein

the second spacer includes a first side surface facing the first spacer, a second side surface located closer to the first substrate end than the first side surface, and a top surface, and

the first side surface and the top surface contact the seal material, and the second side surface does not contact the seal material.

5. The liquid crystal display device according to claim 4 , wherein the seal material includes a seal end located directly above the top surface.

6. The liquid crystal display device according to claim 1 , wherein

the first organic insulating film includes a first portion located between the first insulating substrate and the first spacer, and a second portion located between the first insulating substrate and the second spacer and separated from the first portion, and

the seal material is arranged between the first portion and the second portion.

7. The liquid crystal display device according to claim 1 , wherein the second organic insulating film includes a second concave portion arranged between the first spacer and the second spacer.

8. The liquid crystal display device according to claim 7 , wherein the seal material is arranged in the second concave portion and contacts both of the first organic insulating film and the second organic insulating film.

9. The liquid crystal display device according to claim 8 , wherein

the second organic insulating film includes a third portion located between the second insulating substrate and the first spacer, and a fourth portion located between the second insulating substrate and the second spacer and separated from the third portion, and

the seal material is arranged between the third portion and the fourth portion.

10. A liquid crystal display device, comprising:

a first substrate including;

a first insulating substrate, and

a first organic insulating film including a first concave portion and arranged on the first insulating substrate in a circumference area outside an active area for displaying images,

a second substrate including;

a second insulating substrate, and

a color filter arranged on the second insulating substrate facing the first substrate in the circumference area,

a seal material arranged between the first organic insulating film and the color filter to attach the first substrate and the second substrate;

a first spacer arranged between the first organic insulating film and the color filter, the first spacer being arranged on an active area side in the seal material;

a second spacer arranged between the first organic insulating film and the color filter, the second spacer being arranged closer to a first substrate end of the first insulating substrate than the first spacer in the seal material; and

a liquid crystal layer held in a gap surrounded with the seal material between the first substrate and the second substrate,

wherein the first concave portion is arranged between the first spacer and the second spacer.

11. The liquid crystal display device according to claim 10 , wherein the seal material is arranged in the first concave portion.

12. The liquid crystal display device according to claim 10 , wherein the first spacer is taller than the second spacer.

13. The liquid crystal display device according to claim 10 , wherein the first spacer contacts both of the first substrate and the second substrate, and the second spacer contacts one of the first substrate and the second substrate.

14. The liquid crystal display device according to claim 13 , wherein

the second spacer includes a first side surface facing the first spacer, a second side surface located closer to the first substrate end than the first side surface, and a top surface,

the first side surface and the top surface contact the seal material, and the second side surface does not contact the seal material.

15. The liquid crystal display device according to claim 14 , wherein the seal material includes a seal end located directly above the top surface.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
Priority Claims (1)
JP 2013-081070 · Apr 9, 2013 · national
Continuity (3)
Continuation 15283741 · Oct 3, 2016
Continuation 14245386 · Apr 4, 2014
Related Publication 20180314085A1 · Nov 1, 2018