IP Library Granted Patent US 8,144,294
Granted Patent B2
US 8,144,294 · App. 12/560,227 · Granted Mar 27, 2012

Liquid crystal display having a cutout in a pixel electrode and a cutout in a common electrode

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Quick Facts
Patent No.
US 8,144,294
App. No.
12/560,227
Granted
Mar 27, 2012
Kind
B2
Abstract

A liquid crystal display according to an exemplary embodiment of the present invention includes a first insulation substrate; a pixel electrode disposed on the first insulation substrate and including a first cutout; a second insulation substrate facing the first insulation substrate; and a common electrode disposed on the second insulation substrate and a second cutout arranged alternately with the first cutout, wherein at least one of the first cutout and the second cutout includes a stem and a plurality of first slits and a plurality of second slits extended from the stem and obliquely inclined with respect to the length direction of the stem, and an inclined direction of the first slits is opposite to an inclined direction of the second slits.

Claims (49)

1. A liquid crystal display, comprising:

a first substrate;

a pixel electrode disposed on the first substrate, the pixel electrode comprising a first cutout;

a second substrate facing the first substrate; and

a common electrode disposed on the second substrate, the common electrode comprising a second cutout arranged alternately with the first cutout,

wherein at least one of the first cutout and the second cutout comprises a stem and a plurality of first slits and a plurality of second slits extended from the stem and obliquely inclined with respect to a length direction of the stem, and an inclined direction of the first slits is opposite to an inclined direction of the second slits,

wherein the first slits are divided into a plurality of first slit groups, and the second slits are divided into a plurality of second slit groups, and

wherein the first slit groups and the second slit groups are alternately disposed.

2. The liquid crystal display of claim 1 , wherein

the first slits and the second slits are respectively disposed on two facing edges of the stem, and the arrangements of the first slits and the second slits are symmetrical to each other on the two facing edges of the stem.

3. The liquid crystal display of claim 2 , further comprising

third slits disposed between the first slit groups and the second slit groups, the third slits extending in a direction perpendicular to the length direction of the stem.

4. The liquid crystal display of claim 3 , wherein

the third slits are wider than the first slits and the second slits.

5. The liquid crystal display of claim 4 , wherein

the first slits and the second slits sandwiching the third slits are inclined in a direction away from the third slits at ends of the first slits and the second slits.

6. The liquid crystal display of claim 5 , wherein

the width of the first slits and the second slits decreases further from the stem.

7. The liquid crystal display of claim 6 , wherein

the first slits and the second slits each comprise two long edges and one short edge, wherein the one short edge connects the two long edges to each other, and

the two long edges comprise a first long edge perpendicular to the stem and a second long edge obliquely inclined to the stem.

8. The liquid crystal display of claim 2 , wherein

the first slits and the second slits are curved.

9. The liquid crystal display of claim 8 , wherein

the first slits and the second slits each comprise a lower portion connected to the stem and an upper portion extended from the lower portion, and

the lower portion and the upper portion form an obtuse angle.

10. The liquid crystal display of claim 1 , further comprising

third slits disposed between the first slit groups and the second slit groups, the third slits extending in a direction perpendicular to the length direction of the stem.

11. The liquid crystal display of claim 10 , wherein

the third slits are wider than the first slits and the second slits.

12. The liquid crystal display of claim 11 , wherein

the first slits and the second slits close to the third slits are inclined in a direction away from the third slits further from the stem.

13. The liquid crystal display of claim 1 , wherein

the first slits and the second slits are respectively disposed on two facing edges of the stem, and the arrangement of the first slits and the second slits are symmetrical to each other on the two facing edges of the stem.

14. The liquid crystal display of claim 1 , wherein

the width of the first slits and the second slits decreases further from the stem.

15. The A liquid crystal display of claim 14 , wherein

the first slits and the second slits comprise two long edges and one short edge, wherein the one short edge connects the two long edges to each other, and

the two long edges comprise a first long edge perpendicular to the stem and a second long edge obliquely inclined to the stem.

16. The liquid crystal display of claim 1 , wherein

the first slits and the second slits are curved.

17. The liquid crystal display of claim 16 , wherein

the first slits and the second slits each comprise a lower portion connected to the stem and an upper portion extended from the lower portion, and

the lower portion and the upper portion form an obtuse angle.

18. The liquid crystal display of claim 1 , wherein

the width of the first slits is the same as the interval between two immediately adjacent first slits, and

the width of the second slits is the same as the interval between two immediately adjacent second slits.

19. The liquid crystal display of claim 1 , wherein

the width of the first slits and the second slits is in the range of one-third to three times an interval between the common electrode and the pixel electrode.

Assignments (2)
CHANGE OF NAME Recorded Aug 28, 2012
From: SAMSUNG ELECTRONICS CO., LTD.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 028859/0773 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 12, 2009
From: UM, YOON-SUNG; LYU, JAE-JIN; PARK, SEUNG-BEOM
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 023356/0385 →