Liquid crystal display device

Patent metadata

Field	Value
Publication number	US-11467451-B2
Application number	US-202117537701-A
Country	US
Kind code	B2
Filing date	Nov 30, 2021
Priority date	Aug 6, 2014
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

In order to avoid generation of black unevenness caused by the water intrusion into a liquid crystal display device, there is to provide a liquid crystal display device including a display area and a terminal portion, in which a TFT substrate with an organic passivation film formed and an opposite substrate are adhered to each other by a seal portion and a liquid crystal is enclosed there, wherein in the seal portion of the TFT substrate, a groove-shaped through-hole is formed in the organic passivation film to surround the display area, a water absorption layer formed of the same material in the same process as that of the organic passivation film is formed within the groove-shaped through-hole, and the water absorption layer is not covered with the inorganic insulating film.

First claim

What is claimed is:

1. A display device comprising:
a first substrate having a first inorganic film, an organic film provided on the first inorganic film, and a second inorganic film provided on the organic film,
a second substrate opposed to the first substrate, and
a sealing member provided between the first substrate and the second substrate,
wherein
the organic film has a first groove and a second groove overlapping with the sealing member,
the first groove and the second groove are provided along an extending direction of the seal member,
a part of the organic film is between the first groove and the second groove,
the second inorganic film has an opening at a position overlapping the sealing member in a sectional view, and
the opening overlaps with the part of the organic film in the sectional view.

2. The display device according to claim 1 , wherein
the opening overlaps with the first groove in the sectional view.

3. The display device according to claim 2 , wherein
the opening overlaps with the second groove in the sectional view.

4. The display device according to claim 1 , further comprising the second substrate having a protrusion, wherein
the protrusion overlaps with the sealing member in the sectional view.

5. The display device according to claim 4 , wherein
the protrusion does not overlap with the part of the organic film in the sectional view.

6. The display device according to claim 1 , further comprising a conductive film provided between the first inorganic film and the organic film,
wherein the part of the organic film does not overlap with the conductive film in the sectional view.

7. The display device according to claim 1 , further comprising an alignment film provided on the second inorganic film,
wherein the alignment film overlaps with the sealing member in the sectional view.

8. The display device according to claim 1 , wherein
the second groove is located closer to an end of the first substrate than the first groove in the sectional view.

9. The display device according to claim 1 , wherein
the first groove is provided around a display area.

10. The display device according to claim 9 , wherein
the second groove is provided around the display area and along the first groove.

11. A display device comprising:
a first substrate having a first inorganic film, an organic film provided on the first inorganic film, and a second inorganic film provided on the organic film,
a second substrate opposed to the first substrate, and
a sealing member provided between the first substrate and the second substrate,
wherein
the organic film has a first groove and a second groove overlapping with the sealing member,
the first groove and the second groove are provided along an extending direction of the seal member,
an edge of the organic film formed by one of the first groove or the second groove is covered by the second inorganic film, and
a part of the organic film between the first groove and the second groove has a portion not covered by the second inorganic film.

12. The display device according to claim 11 , further comprising the second substrate having a protrusion, wherein
the protrusion overlaps with the sealing member in the sectional view.

13. The display device according to claim 12 , wherein
the protrusion does not overlap with the part of the organic film in the sectional view.

14. The display device according to claim 11 , further comprising a conductive film provided between the first inorganic film and the organic film,
wherein the part of the organic film does not overlap with the conductive film in the sectional view.

15. The display device according to claim 11 , wherein
the first groove is provided around a display area, and
the second groove is provided along the first groove.

Assignees

• Japan Display Inc

Inventors

• Nishino Tomonori
• Shimura Masato
• Ishikawa Tomokazu
• Kuramoto Yuki
• Hashimoto Satoshi

Classifications

• G02F1/13396

  Spacers having different sizes · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/133311

  Environmental protection, e.g. against dust or humidity · CPC title

• G02F1/133345

  Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title