DISPLAY DEVICE

• US 20160062188A1
• Filed: 01/30/2015
• Published: 03/03/2016
• Est. Priority Date: 09/03/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Woo, Su Wan, Ko, Un Byoll
• Granted Patent: US 10,025,142 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/133707 Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
• CPC Class Codes: G02F 1/134345 Subdivided pixels, e.g. for grey scale or redundancy
• CPC Class Codes: G02F 1/13624 having more than one switching element per pixel

Abstract

A display device may include a first substrate, a second substrate opposite the first substrate, a liquid crystal layer between the first substrate and the second substrate, and a pixel electrode disposed on the first substrate and including a plurality of subpixel electrodes. The subpixel electrode may include a horizontal stem electrode, a plurality of vertical stem electrodes, and a plurality of branch electrodes extending from at least one of the horizontal stem electrode and the vertical stem electrodes.

Claims

1. A display device, comprising:

a first substrate;

a second substrate opposite the first substrate;

a liquid crystal layer between the first substrate and the second substrate; and

a pixel electrode on the first substrate, the pixel electrode comprising a plurality of subpixel electrodes,

wherein the subpixel electrode comprises;

a horizontal stem electrode;

a plurality of vertical stem electrodes; and

a plurality of branch electrodes extending from at least one of the horizontal stem electrode and the vertical stem electrodes.

2. The display device of claim 1, wherein the first and second substrates have a predetermined radius of curvature.

3. The display device of claim 1, wherein the horizontal stem electrode is disposed on a central portion of the subpixel electrode.

4. The display device of claim 1, wherein the vertical stem electrode comprises:

a first vertical stem electrode; and

a second vertical stem electrode spaced apart from the first vertical stem electrode.

5. The display device of claim 4, further comprising at least one substem electrode between the first and second vertical stem electrodes.

6. The display device of claim 5, wherein the substem electrode is disposed parallel to the first and second vertical stem electrodes.

7. The display device of claim 5, wherein the substem electrode is disposed parallel to the horizontal stem electrode.

8. The display device of claim 1, wherein the branch electrode comprises:

a first branch electrode extending in an upper left direction from at least one of the horizontal stem electrode and the vertical stem electrodes;

a second branch electrode extending in an upper right direction from at least one of the horizontal stem electrode and the vertical stem electrodes;

a third branch electrode extending in a lower left direction from at least one of the horizontal stem electrode and the vertical stem electrodes; and

a fourth branch electrode extending in a lower right direction from at least one of the horizontal stem electrode and the vertical stem electrodes.

9. The display device of claim 1, further comprising:

a first alignment layer on the first substrate;

a common electrode on the second substrate; and

a second alignment layer on the second substrate,

wherein at least one of the first alignment layer, the second alignment layer, and the liquid crystal layer comprises a photopolymerizable material.

10. A display device, comprising:

a first substrate;

a second substrate opposite the first substrate;

a liquid crystal layer between the first and second substrates; and

a pixel electrode on the first substrate, the pixel electrode comprising a plurality of subpixel electrodes,

wherein the subpixel electrode comprises;

a horizontal stem electrode;

a vertical stem electrode; and

a plurality of branch electrodes extending from at least one of the horizontal stem electrode and the vertical stem electrode,

wherein at least one of the plurality of branch electrodes extends from the vertical stem electrode in a direction parallel to the horizontal stem electrode and is bent in a predetermined direction.

11. The display device of claim 10, wherein the first and second substrates have a predetermined radius of curvature.

12. The display device of claim 10, wherein the horizontal and vertical stem electrodes are disposed on a central portion of the subpixel electrode.

13. The display device of claim 10, wherein another branch electrode of the plurality of branch electrodes extends from the horizontal stem electrode in the predetermined direction.

14. The display device of claim 13, wherein the plurality of branch electrodes comprise:

a first branch electrode extending in an upper left direction;

a second branch electrode extending in an upper right direction;

a third branch electrode extending in a lower left direction; and

a fourth branch electrode extending in a lower right direction.

15. The display device of claim 10, further comprising:

a first alignment layer on the first substrate;

a common electrode on the second substrate; and

a second alignment layer on the second substrate,

wherein at least one of the first alignment layer, the second alignment layer, and the liquid crystal layer comprises a photopolymerizable material.