LIQUID CRYSTAL DISPLAY

• US 20140098315A1
• Filed: 03/15/2013
• Published: 04/10/2014
• Est. Priority Date: 10/05/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: KIM, Swae-Hyun, PARK, Jae Hwa, JUNG, Hyung Gi, YOON, Yeo Geon, HONG, Sung Hee, KIM, Hyung June, SONG, Young Goo, KIM, Sung Hoon
• Granted Patent: US 9,207,506 B2
• Time in Patent Office: Days
• US Class Current: 349/42
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133753 with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/134345 Subdivided pixels, e.g. for grey scale or redundancy
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G02F 1/136209 Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
• CPC Class Codes: G02F 1/136222 Colour filters incorporated in the active matrix substrate
• CPC Class Codes: G02F 1/136268 Switch defects
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence

Abstract

A liquid crystal display includes: a first insulation substrate; a gate line disposed on the first insulation substrate; a first data line and a second data line disposed on the first insulation substrate; a color filter disposed on the first insulation substrate and disposed between the first data line and the second data line; a first light blocking member disposed on the first data line and the second data line; and a second light blocking member disposed on the color filter and the first light blocking member, extending in the same direction as the gate line, and overlapping the first light blocking member on the first data line and the second data line.

Claims

1. A liquid crystal display, comprising:

a first insulation substrate;

a gate line disposed on the first insulation substrate;

a first data line and a second data line disposed on the first insulation substrate;

a color filter disposed on the first insulation substrate and disposed between the first data line and the second data line;

a first light blocking member disposed on the first data line and the second data line; and

a second light blocking member disposed on the color filter and the first light blocking member, extending in the same direction as the gate line, and overlapping the first light blocking member on the first data line and the second data line.

2. The liquid crystal display of claim 1, wherein

a width of the first light blocking member is substantially constant.

3. The liquid crystal display of claim 2, wherein

the width of the first light blocking member is greater than a width of the second data line.

4. The liquid crystal display of claim 2, wherein

the second light blocking member includes a first portion, a second portion and a third portion, and

thicknesses of the first, second and third portions are different from each other.

5. The liquid crystal display of claim 4, further comprising:

a pixel electrode disposed on the color filter, wherein the pixel electrode comprises a first subpixel electrode and a second subpixel electrode separated from each other with the gate line disposed between the first and second subpixel electrodes;

a first thin film transistor connected to the first subpixel electrode; and

a second thin film transistor connected to the second subpixel electrode,

wherein the second light blocking member extends along the gate line and covers the first thin film transistor and the second thin film transistor.

6. The liquid crystal display of claim 5, wherein

each of the first subpixel electrode and the second subpixel electrode comprises a plurality of stems, and a plurality of branch electrodes protruding from the stems.

7. The liquid crystal display of claim 2, wherein

the second light blocking member includes a first portion and a second portion, and

thicknesses of the first and second portions are different from each other.

8. The liquid crystal display of claim 7, wherein

the first portion contacts a surface of a thin film which is disposed on a second insulation substrate disposed opposite to the first insulation substrate.

9. The liquid crystal display of claim 8, wherein

the second portion includes a first region overlapping the first light blocking member and a second region including a remainder of the second portion, and

a distance between the first region and the surface of the thin film disposed on the second insulation substrate is less than a distance between the second region and the surface of the thin film disposed on the second insulation substrate.

10. The liquid crystal display of claim 9, further comprising:

a pixel electrode disposed on the color filter, wherein the pixel electrode comprises a first subpixel electrode and a second subpixel electrode separated from each other with the gate line disposed between the first and second subpixel electrodes;

a first thin film transistor connected to the first subpixel electrode; and

a second thin film transistor connected to the second subpixel electrode,

wherein the second light blocking member extends along the gate line and covers the first thin film transistor and the second thin film transistor.

11. The liquid crystal display of claim 10, wherein

each of the first subpixel electrode and the second subpixel electrode comprises a plurality of stems and a plurality of branch electrodes protruding from the stems.

12. The liquid crystal display of claim 1, further comprising:

a pixel electrode disposed on the color filter, wherein the pixel electrode comprises a first subpixel electrode and a second subpixel electrode separated from each other with the gate line disposed between the first and second subpixel electrodes;

a first thin film transistor connected to the first subpixel electrode; and

a second thin film transistor connected to the second subpixel electrode,

wherein the second light blocking member extends along the gate line and covers the first thin film transistor and the second thin film transistor.

13. The liquid crystal display of claim 12, wherein

each of the first subpixel electrode and the second subpixel electrode comprises a plurality of stems and a plurality of branch electrodes protruding from the stems.

14. The liquid crystal display of claim 1, wherein

a width of the first light blocking member at an overlapping portion of the first light blocking member and the second light blocking member is less than a width of a remaining portion of the first light blocking member.

15. The liquid crystal display of claim 14, wherein

a width of the first light blocking member at a non-overlapping portion of the first light blocking member and the second light blocking member is greater than the width of the first data line and the width of the second data line.

16. The liquid crystal display of claim 14, wherein

the width of the first light blocking member at an overlapping portion of the first light blocking member and the second light blocking member is about 0.7 micrometer.

17. The liquid crystal display of claim 14, wherein

the second light blocking member includes a first portion, a second portion, and a third portion, and

thicknesses of the first, second and third portions are different from each other.

18. The liquid crystal display of claim 17, further comprising:

a pixel electrode disposed on the color filter, wherein the pixel electrode comprises a first subpixel electrode and a second subpixel electrode separated from each other with the gate line disposed between the first and second subpixel electrodes;

a first thin film transistor connected to the first subpixel electrode; and

a second thin film transistor connected to the second subpixel electrode,

wherein the second light blocking member extends along the gate line and covers the first thin film transistor and the second thin film transistor.

19. The liquid crystal display of claim 18, wherein

each of the first subpixel electrode and the second subpixel electrode comprises a plurality of stems and a plurality of branch electrodes protruding from the stems.

20. The liquid crystal display of claim 14, further comprising:

a pixel electrode disposed on the color filter and including a first subpixel electrode and a second subpixel electrode separated from each other with the gate line disposed between the first and second subpixel electrodes;

a first thin film transistor connected to the first subpixel electrode; and

a second thin film transistor connected to the second subpixel electrode,

wherein the second light blocking member extends along the gate line and covers the first thin film transistor and the second thin film transistor.

21. The liquid crystal display of claim 20, wherein

each of the first subpixel electrode and the second subpixel electrode comprises a plurality of stems and a plurality of branch electrodes protruding from the stems.

22. The liquid crystal display of claim 1, wherein

a thickness of the first light blocking member is decreased toward a center of the second light blocking member from the overlapping portion of the first light blocking member and the second light blocking member.

23. The liquid crystal display of claim 22, wherein

the thickness of the first light blocking member is about zero (0) micrometer at the center of the second light blocking member.

24. The liquid crystal display of claim 22, wherein

the second light blocking member includes a first portion, a second portion, and a third portion, and

thicknesses of the first, second and third portions are different from each other.

25. The liquid crystal display of claim 24, further comprising:

a pixel electrode disposed on the color filter, wherein the pixel electrode comprises a first subpixel electrode and a second subpixel electrode separated from each other with the gate line disposed between the first and second subpixel electrodes;

a first thin film transistor connected to the first subpixel electrode; and

a second thin film transistor connected to the second subpixel electrode,

wherein the second light blocking member extends along the gate line and covers the first thin film transistor and the second thin film transistor.

26. The liquid crystal display of claim 25, wherein

each of the first subpixel electrode and the second subpixel electrode comprises a plurality of stems and a plurality of branch electrodes protruding from the stems.

27. The liquid crystal display of claim 22, further comprising:

a pixel electrode disposed on the color filter, wherein the pixel electrode comprises a first subpixel electrode and a second subpixel electrode separated from each other with the gate line disposed between the first and second subpixel electrodes;

a first thin film transistor connected to the first subpixel electrode; and

a second thin film transistor connected to the second subpixel electrode,

wherein the second light blocking member extends along the gate line and covers the first thin film transistor and the second thin film transistor.

28. The liquid crystal display of claim 27, wherein

each of the first subpixel electrode and the second subpixel electrode comprises a plurality of stems and a plurality of branch electrodes protruding from the stems.