Liquid crystal display device and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10175541-B2
Application number	US-201615342223-A
Country	US
Kind code	B2
Filing date	Nov 3, 2016
Priority date	Apr 11, 2013
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

It is possible to separate each liquid crystal display panel from a mother board in which multiple liquid crystal display panels are formed even with a thin glass substrate, by forming a columnar spacer in the boundary between liquid crystal display panels, forming a scribe line corresponding to the columnar spacer on both sides of the counter substrate and the TFT substrate in the mother board, and forming a separation line between the scribe lines by applying a bending stress to the mother board. Since the columnar spacer is formed in a portion corresponding to the scribe line, the strength in this portion increases, so that the proper scribe lines and break lines can be formed when the thickness of the glass substrate is reduced to about 0.15 mm.

First claim

What is claimed is:

1. A liquid crystal display device comprising:
a TFT substrate including a plurality of pixels in a display area, and a terminal portion, in which an outer circuit is mounted;
a counter substrate disposed opposite to the TFT substrate except at the terminal portion;
a black matrix layer formed on the counter substrate;
a color filter layer formed on the black matrix layer;
spacers, comprising a first spacer and a second spacer, formed between the TFT substrate and the counter substrate; and
a sealing material bonding the TFT substrate and the counter substrate;
wherein the counter substrate has a first end, which extends in a first direction, is disposed between the sealing material and the terminal portion,
a second end, which extends in a second direction, is connected to the first end, and the first direction and the second direction cross to each other,
wherein the first spacer is disposed between the first end and the sealing material, and the second spacer is disposed between the second end and the display area,
wherein the second spacer overlaps with the sealing material and does not contact with the TFT substrate, and the sealing material is disposed between the second spacer and the TFT substrate, and
wherein the first spacer is in contact with the TFT substrate, and is overlapped with a laminated film of the black matrix layer and the color filter layer.

2. The liquid crystal display device according to claim 1 ,
wherein the first spacer is not in contact with the sealing material.

3. The liquid crystal display device according to claim 1 , further comprising an overcoat layer formed on the color filter layer,
wherein the first spacer is overlapped with a laminated film of the black matrix layer, the color filter layer, and the overcoat layer.

4. The liquid crystal display device according to claim 1 ,
wherein the second spacer is disposed between the second end and the display area,
a third spacer is disposed between the display area and a third end, which extends in the second direction and crosses the first end,
the second spacer and the third spacer are not in contact with the TFT substrate.

5. The liquid crystal display device according to claim 1 ,
wherein the second spacers are aligned in line with an interval of a distance w 2 along the second end, and a width of the second spacer along the second end is w 1 , and
wherein w 1 is greater than w 2 .

6. The liquid crystal display device according to claim 1 ,
wherein first spacers are aligned in line with an interval of a distance w 2 along the first end, and a width of the first spacer along the first end is w 1 , and
wherein w 1 is greater than w 2 .

7. The liquid crystal display device according to claim 1 ,
wherein the laminated film have two or more color filter layers.

8. A liquid crystal display device comprising:
a first substrate including a terminal portion;
a second substrate including a black matrix layer and a color filter layer formed on the black matrix layer; and
a spacer formed between the first substrate and the second substrate;
wherein the first substrate and the second substrate are bonded by a sealing material,
wherein the second substrate has a first end, which extends in a first direction, is disposed between the sealing material and the terminal portion,
a second end, which extends in a second direction, is connected to the first end, and the first direction and the second direction cross to each other,
wherein the spacers, comprising a first spacer and a second spacer, are disposed between the seal material and an end of the second substrate,
wherein the first spacer is disposed along the first end, and the second spacer is disposed along the second end,
wherein the second spacer overlaps with the sealing material and does not contact with the first substrate, and the sealing material is disposed between the second spacer and the first substrate, and
wherein the first spacer is in contact with the first substrate, and is overlapped with a laminated film of the black matrix layer and the color filter layer.

9. The liquid crystal display device according to claim 8 ,
wherein the first spacer is not in contact with the sealing material.

10. The liquid crystal display device according to claim 8 , further comprising an overcoat layer formed on the color filter layer,
wherein the first spacer is overlapped with a laminated film of the black matrix layer, the color filter layer and the overcoat layer.

11. The liquid crystal display device according to claim 8 ,
wherein the second spacers are aligned in line with an interval of a distance w 2 along the second end, and a width of the second spacer along the second end is w 1 , and
wherein w 1 is greater than w 2 .

12. The liquid crystal display device according to claim 8 ,
wherein the first spacers are aligned in line with an interval of a distance w 2 along the first end, and a width of the first spacer along the first end is w 1 , and
wherein w 1 is greater than w 2 .

Assignees

• Japan Display Inc

Inventors

• Hatakeyama Eisuke

Classifications

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/13394 Primary

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title

• G02F1/133514

  Colour filters · CPC title

• G02F1/133351

  Manufacturing of individual cells out of a plurality of cells, e.g. by dicing · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title