IP Library Granted Patent US 10,488,698
Granted Patent B2
US 10,488,698 · App. 15/299,666 · Granted Nov 26, 2019

Liquid crystal display device

Inventor: Syou Yanagisawa (Mobara, JP)
Assignee: Japan Display Inc.
G02F1/133512G02F1/1339G02F1/1368G02F1/13439G02F1/134336G02F1/136286G02F1/1345G02F1/133345G02F1/134363G02F1/136204G02F1/136209G02F2001/136295G02F2201/121G02F2201/123
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Quick Facts
Patent No.
US 10,488,698
App. No.
15/299,666
Granted
Nov 26, 2019
Kind
B2
Abstract

A black matrix is formed to an edge of a counter substrate. Then, a BM slit, which is an area where the black matrix is not present, is formed in the periphery of a seal material in order to prevent water or moisture from penetrating from the interface between the counter substrate and the black matrix. Then, a light shielding metal is formed in a layer other than a lead line layer, on the side of a TFT substrate, in order to prevent light from leaking from the BM slit. With this structure, it is possible to prevent the light from leaking from the BM slit around a screen. As a result, the degradation of the contrast can be prevented in the periphery of the screen.

Claims (34)

1. A display device comprising,

a TFT substrate,

a plurality of pixels formed in a matrix on the TFT substrate,

a first line having a first portion and a second portion which are arranged in a first direction,

a second line extending in a second direction, the second direction crossing the first direction,

a counter substrate opposed to the TFT substrate, and

a black matrix formed on the counter substrate,

wherein the first line is configured to transmit a signal to each of the plurality of pixels,

wherein the first line and the second line are formed on different layers,

wherein the black matrix has a slit extending in the second direction, and the slit is formed corresponding to the second line,

wherein the first portion and the second portion are connected by a third line,

wherein a portion of the third line is formed on a different layer from where a portion of the first line is formed,

wherein the third line is formed on a different layer from where the second line is formed, and

wherein the portion of the third line overlaps a portion of the second line in a plan view.

2. The display device according to claim 1 , further comprising a display area and a peripheral area formed around the display area,

wherein the peripheral area includes a terminal area, and

wherein the first line extends toward the terminal area from the display area.

3. The display device according to claim 1 , further comprising a seal material bonding the TFT substrate and the counter substrate,

wherein the seal material is formed in the peripheral area, and

wherein at least a part of the seal material overlaps with the slit.

4. The display device according to claim 2 ,

wherein an outer circuit is mounted on the terminal area, and

wherein the first line is electrically connected to the outer circuit.

5. The display device according to claim 2 ,

wherein the second line is formed around the display area.

6. The display device according to claim 1 ,

wherein the third line extends in a third direction crossing the second direction, and

wherein each of the first portion and the second portion extends in a different direction from the second direction.

7. The display device according to claim 1 ,

wherein the third line is formed by a transparent conductive material.

8. The display device according to claim 3 ,

wherein at least a part of the seal material overlaps with the third line.

9. The display device according to claim 3 ,

wherein the slit is formed between the seal material and an edge of the TFT substrate.

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 Oct 21, 2016
From: YANAGISAWA, SYOU
To: JAPAN DISPLAY INC.
Reel/Frame 040086/0226 →
Cited By (1)
US 12,298,617