DISPLAY DEVICE

• US 20170336687A1
• Filed: 08/07/2017
• Published: 11/23/2017
• Est. Priority Date: 04/11/2011
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: Kitajima, Kenji, Suzuki, Ryouhei
• Granted Patent: US 10,108,060 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/13458 Terminal pads
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line

Abstract

A liquid crystal display device includes a thin film transistor substrate having a pixel region and a frame region, and a color filter substrate. The frame region includes a first metal wire that surrounds the outside of the pixel region, and a second metal wire that is formed so as to surround the outside of the first metal wire. The first metal wire has at least one slit at an area overlapping with a seal material.

Claims

1. A display device comprising:

a first substrate including;

a terminal section disposed at a peripheral region near an edge of he first substrate;

a plurality of pixels disposed at a display region;

a first metal wire disposed between the edge and a boundary between the display region and the peripheral region; and

a second metal wire disposed between the edge and the boundary between the display region and the peripheral region,

wherein the first metal wire is located closer to a side of the boundary than the second metal wire, the second metal wire is located closer to a side of the edge than the first metal wire,

the first metal wire has a plurality of openings.

2. The display device according to claim 1, further comprising an external substrate,

wherein the external substrate is connected to the terminal section.

3. The display device according to claim 1, the first substrate further including a first polarizer for transmitting only light polarized in a specific direction,

wherein the first polarizer is as large as the display region, and the first metal wire does not overlap with the first polarizer.

4. The display device according to claim 1, wherein the plurality of openings are formed by a plurality of lines branching in the first metal wire.

5. The display device according to claim 4, wherein a width of each of the lines branching in the first metal wire is larger than a width of at least one of the plurality of openings.

6. The display device according to claim 5, wherein a width of the second metal wire is larger than the width of each of the lines branching in the first metal wire.

7. The display device according to claim 4, wherein a width of the second metal wire is larger than the width of each of the lines branching from the first metal wire.

8. The display device according to claim 1, wherein the plurality of openings are formed in a checkered pattern.

9. The display device according to claim 1, wherein the first metal wire is maintained at a common potential.

10. The display device according to claim 1, wherein the first metal wire includes material having light blocking property.

11. The display device according to claim 1, wherein the first substrate is a thin film transistor substrate.

12. The display device according to claim 1, wherein the first metal wire and the second metal wire are formed of an identical material to constitute at least a part of one layer.

13. The display device according to claim 11, further comprising a second substrate, and a seal attached to the first substrate and the second substrate,

wherein the plurality of openings overlap with the seal.

14. The display device according to claim 13,

wherein the second substrate further comprises a color filter and a black matrix, a second polarizer for transmitting only light polarized in a specific direction,

wherein the second polarizer is as large as the display region, the first metal wire does not overlap with the second polarizer, the black matrix is disposed at the peripheral region, and the black matrix overlaps with the seal and does not overlap with the second polarizer.

15. The display device according to claim 14, wherein a width of the black matrix is larger than a width of the seal, and the seal is sandwiched between the first metal wire and the black matrix.