Liquid crystal display device

Patent metadata

Field	Value
Publication number	US-9851606-B2
Application number	US-201514921478-A
Country	US
Kind code	B2
Filing date	Oct 23, 2015
Priority date	Oct 24, 2014
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

A liquid crystal display device includes a first substrate having a display area and a non-display area; a second substrate; a sealing unit between the first and second substrates; the sealing unit surrounding the display area; a liquid crystal layer interposed between the first and second substrates; the liquid crystal layer surrounded by the sealing unit; at least one containment barrier between the sealing unit and the display area. The containment barrier may have a tapering angle different from that of a pattern formed on the display area.

First claim

What is claimed is:

1. A liquid crystal display device comprising:
a first substrate comprising a display area and a non-display area surrounding the display area;
a second substrate;
a sealing unit between the first and second substrates, the sealing unit surrounding the non-display area;
a liquid crystal layer interposed between the first and second substrates, the liquid crystal layer surrounded by the sealing unit;
at least one column spacer provided on one of the first and second substrates;
a black matrix on one of the first and second substrates, the black matrix configured to define at least one pixel region;
at least one color filter disposed corresponding to the at least one pixel region; and
at least one containment barrier in the non-display area between the sealing unit and the display area,
wherein the at least one containment barrier has a tapering angle greater than that of a pattern disposed on the display area,
wherein the pattern is the at least one color filter.

2. The liquid crystal display device of claim 1 , wherein the at least one containment barrier comprises materials the same as that of one of the at least one color filter and the at least one column spacer.

3. The liquid crystal display device of claim 1 , wherein the at least one color filter is provided on the first substrate.

4. The liquid crystal display device of claim 1 , wherein the black matrix is provided on the second substrate.

5. The liquid crystal display device of claim 4 , wherein the at least one containment barrier overlaps the black matrix.

6. The liquid crystal display device of claim 1 , further comprising a first alignment layer on the first substrate and a second alignment layer on the second substrate.

7. The liquid crystal display device of claim 1 , the at least one containment barrier includes a tapered side where a convex-concave pattern is disposed; and
the pattern includes a tapered side where a convex-concave pattern is disposed.

8. The liquid crystal display device of claim 1 , wherein the at least one containment barrier has a tapering angle in a range of about 30 to 90 degrees, and
wherein the pattern has a tapering angle in a range of about 10 to 60 degrees.

9. The liquid crystal display device of claim 1 , wherein the at least one containment barrier protrudes from one of the first and second substrates and forms at least one closed loop.

10. The liquid crystal display device of claim 9 , wherein the at least one containment barrier forms at least one closed loop surrounding an area smaller than a size of the display area.

11. The liquid crystal display device of claim 9 , wherein the at least one closed loop is at least one of a hexagon, a quadrangle, a trapezoid, a lozenge, and a triangle in shape.

12. A liquid crystal display device comprising:
a first substrate comprising a display area and a non-display area surrounding the display area;
a second substrate;
at least one column spacer provided on one of the first and second substrates;
a sealing unit between the first and second substrates, the sealing unit surrounding the non-display area;
a liquid crystal layer interposed between the first and second substrates, the liquid crystal layer surrounded by the sealing unit; and
a first containment barrier disposed on the first substrate in the non-display area between the sealing unit and the at least one column spacer;
a second containment barrier disposed on the second substrate opposite the first containment barrier;
wherein the first and second containment barriers each comprise;
a pair of parallel protrusions forming a loop surrounding the display area; and
a plurality of third protrusions connected between the pair of parallel protrusions.

13. The liquid crystal display device of claim 12 , wherein each of the first and second containment barriers further comprise a plurality of fourth protrusions connected between the pair of parallel protrusions such that a loop formed by the pair of parallel protrusions and the plurality of third and fourth protrusions is a closed loop comprising a plurality of lozenge shapes and a plurality of triangular shapes.

14. The liquid crystal display device of claim 12 , wherein each of the first and second containment barriers further comprise a plurality of fourth, fifth, sixth and seventh protrusions connected between the pair of parallel protrusions such that a loop formed by the pair of parallel protrusions and the plurality of third, fourth, fifth, sixth and seventh protrusions is a closed loop comprising a plurality of hexagonal shapes and a plurality of trapezoidal shapes.

15. The liquid crystal display device of claim 12 , wherein each of the first and second containment barriers further comprise:
a fourth protrusion in parallel with the pair of parallel protrusions; and
a plurality of fifth protrusions connected between the fourth protrusion and the pair of parallel protrusions such that a loop formed by the connected protrusions is a closed loop comprising a first plurality of quadrangle shapes and a second plurality of quadrangle shapes offset from the first plurality of quadrangle shapes.

Assignees

• Samsung Display Co Ltd

Inventors

• Cha Taewoon
• Yun Sanghyun

Classifications

• G02F2001/133388

  Physics · mapped topic

• G02F1/13394

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

• G02F1/1337

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title

• G02F1/133512

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

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title