Liquid crystal display

Patent metadata

Field	Value
Publication number	US-2016109750-A1
Application number	US-201514681514-A
Country	US
Kind code	A1
Filing date	Apr 8, 2015
Priority date	Oct 21, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

A liquid crystal display device according to the present invention includes: a first substrate; a first color filter and a second color filter provided on the first substrate and including an overlapping portion where at least parts of the first and second color filters overlap each other; and a light blocking member formed between the first substrate and the overlapping portion, wherein the light blocking member includes a recessed portion corresponding to the overlapping portion of the first color filter and the second color filter. According to the present invention, the recessed portion is formed in the light blocking member provided in the overlapping portion of two or more color filters to reduce a step difference caused by the overlapping portion of the color filters, thereby preventing an alignment defect.

First claim

What is claimed is:

1 . A liquid crystal display device comprising:
a first substrate; a first color filter and a second color filter provided on the first substrate and including an overlapping portion where at least parts of the first and second color filters overlap each other; and a light blocking member formed between the first substrate and the overlapping portion, wherein the light blocking member comprises a recessed portion corresponding to the overlapping portion of the first color filter and the second color filter.

2 . The liquid crystal display device of claim 1 , wherein a plurality of pixels are formed on the first substrate,
the plurality of pixels comprise gate lines in a row direction and data lines in a column direction, and the recessed portion of the light blocking member is formed in an area corresponding to the data line.

3 . The liquid crystal display device of claim 2 , further comprising a third color filter,
wherein the overlapping portion is formed in two color filters selected from the first color filter, the second color filter, and the third color filter.

4 . The liquid crystal display device of claim 3 , wherein each of the first to third color filters is formed with a color selected from red, green, and blue.

5 . The liquid crystal display device of claim 3 , wherein the recessed portion of the light blocking member is formed in all areas that overlap the overlapping portion.

6 . The liquid crystal display device of claim 3 , further comprising a passivation layer provided in an upper surface of the color filters and made of an organic insulation material.

7 . The liquid crystal display device of claim 6 , wherein the light blocking member is made of chromium, chromium oxide, or an organic material.

8 . The liquid crystal display device of claim 7 , wherein the shape of a cross-section of the recessed portion is a quadrangle, a triangle, or a semi-circle.

9 . The liquid crystal display device of claim 1 , further comprising a field generating electrode formed on the first substrate.

10 . A liquid crystal display device comprising:
a first substrate where a plurality of pixels are formed; a second substrate facing the first substrate; a first color filter and a second color filter provided on the second substrate and including an overlapping portion where at least parts of the first and second color filters overlap each other; a light blocking member formed between the second substrate and the overlapping portion; and a liquid crystal layer comprising liquid crystal molecules provided between the first substrate and the second substrate, wherein the light blocking member comprises a recessed portion corresponding to the overlapping portion of the first color filter and the second color filter.

11 . The liquid crystal display device of claim 10 , wherein the plurality of pixels comprises gate lines in a column direction and data lines in a column direction, and
the recessed portion of the light blocking member is formed in an area corresponding to the data lines on the first substrate.

12 . The liquid crystal display device of claim 11 , further comprising a third color filter,
wherein the overlapping portion is formed in two color filters selected from the first color filter, the second color filter, and the third color filter.

13 . The liquid crystal display device of claim 12 , wherein each of the first to third color filters is formed with one color selected from red, green, and blue.

14 . The liquid crystal display device of claim 12 , wherein the recessed portion of the light blocking member is formed in all areas corresponding to the overlapping portion.

15 . The liquid crystal display device of claim 12 , further comprising an overcoat made of an organic insulation material on an upper surface of the color filter.

16 . The liquid crystal display device of claim 15 , wherein the light blocking member is made of chromium, chromium oxide, or an organic material.

17 . The liquid crystal display device of claim 16 , wherein the shape of a cross-section of the recessed portion is a quadrangle, a triangle, or a semi-circle.

18 . The liquid crystal display device of claim 10 , further comprising a field generating electrode formed on at least one of the first substrate and the second substrate.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Joong Tae
• Kim In Woo
• Park Kwang Su
• Lee Da Young
• Cho Yong Tae
• Hwahg Min Ha

Classifications

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F1/133512

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

• G02F2001/133519

  Physics · mapped topic

• G02F1/134336

  Matrix · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title