IP Library Granted Patent US 8,279,385
Granted Patent B2
US 8,279,385 · App. 12/723,384 · Granted Oct 2, 2012

Liquid crystal display

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Quick Facts
Patent No.
US 8,279,385
App. No.
12/723,384
Granted
Oct 2, 2012
Kind
B2
Abstract

The present invention relates to a liquid crystal display. A liquid crystal display according to exemplary embodiments of the present invention includes a substrate, and a pixel electrode formed on the substrate and including a plurality of minute branches. The pixel electrode includes a first region and a second region where a first distance and a second distance are provided according to an interval between the respective neighboring minute branches, wherein the second distance that is larger than the first distance, and a third region is provided between the first region and the second region, and the position of the third region having an interval between the neighboring minute branches is gradually changed.

Claims (89)

1. A liquid crystal display, comprising:

a substrate; and

a pixel electrode, comprising a plurality of minute branches, formed on the substrate,

wherein the pixel electrode comprises a first region, a second region, and a third region, the third region being between the first region and the second region,

wherein each of the first region, the second region, and the third region has at least three minute branches,

wherein intervals between the respective neighboring minute branches of the first region have a first distance throughout the first region, and intervals between the respective neighboring minute branches of the second region have a second distance throughout the second region, the second distance being larger than the first distance, and

wherein intervals between the respective neighboring minute branches of the third region have a varying distance.

2. The liquid crystal display of claim 1 , wherein

a pitch of the minute branches of the first region is a first pitch, a pitch of the minute branches of the second region is a second pitch, wherein the first pitch is less than the second pitch.

3. The liquid crystal display of claim 1 , wherein

the first distance is in a range of approximately 3.5 μm to approximately 4.5 μm, and the second distance is in a range of approximately 3.5 μm to approximately 4.5 μm.

4. The liquid crystal display of claim 1 , wherein

the first region has a larger area than that of the second region.

5. The liquid crystal display of claim 1 , wherein the first

region, the second region, and the third region form a subregion of the pixel electrode, and the first region occupies about 60-70% of an area of the subregion.

6. The liquid crystal display of claim 4 , wherein the first

region, the second region, and the third region form a subregion of the pixel electrode, and the third region occupies about 15-25% of an area of the subregion.

7. The liquid crystal display of claim 1 , wherein

the first distance is in a range of approximately 2.5 μm to approximately 3.5 μm, and the second distance is in a range of approximately 3.5 μm to approximately 4.5 μm.

8. The liquid crystal display of claim 7 , wherein

the interval between the minute branches of the third region is gradually changed by approximately 0.2 μm to approximately 0.3 μm.

9. The liquid crystal display of claim 1 , wherein

the first distance is in a range of approximately 2.5 μm to approximately 3.5 μm, and the second distance is in a range of approximately 4.5 μm to approximately 5.5 μm.

10. The liquid crystal display of claim 9 , wherein

the interval between the minute branches of the third region is gradually changed by approximately 0.2 μm to approximately 0.3 μm.

11. The liquid crystal display of claim 1 , wherein

the width of each of the plurality minute branches is in a range of approximately 3.5 μm to approximately 4.5 μm.

12. The liquid crystal display of claim 1 , wherein

the pixel electrode is divided into a plurality of subregions, each subregion having minute branches extending in different length directions, respectively, and each subregion comprises the first region, the second region, and the third region.

13. The liquid crystal display of claim 1 , wherein

the pixel electrode comprises a first subpixel electrode and a second subpixel electrode that are separated from each other, and

the first subpixel electrode and the second subpixel electrode are configured to have different voltages from each other.

14. The liquid crystal display of claim 13 , wherein

each of the first subpixel electrode and the second subpixel electrode comprises a plurality of minute branches, and

the second subpixel electrode comprises the first region, the second region, and the third region.

15. The liquid crystal display of claim 13 , wherein

the first subpixel electrode and the second subpixel electrode are configured to receive different voltage data from each other obtained from one image information.

16. The liquid crystal display of claim 13 , further comprising:

a data line and a gate line formed on the substrate,

wherein the first subpixel electrode is connected to the data line and the gate line via a first switching element;

the second subpixel electrode is connected to the data line and the gate line via a second switching element; and

the second subpixel electrode is connected to a down capacitor via a third switching element.

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

a second substrate facing the substrate, and a common electrode disposed on the second substrate, the common electrode being configured to receive a common voltage.

18. The liquid crystal display of claim 1 , wherein

the pixel electrode further comprises a connection connecting ends of the plurality of minute branches.

19. The liquid crystal display of claim 18 , wherein

the width of the connection is less than about 2.5 times of a width of the minute branches.

20. The liquid crystal display of claim 19 , further comprising:

a data line and a gate line formed on the substrate and connected to the pixel electrode via a switching element,

wherein at least a portion of the connection overlaps at least a portion of the gate line.

21. The liquid crystal display of claim 20 , wherein

the connection overlaps the gate line in a width direction of the gate line.

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

a storage electrode line, formed on the substrate, to transmit a common voltage,

wherein at least a portion of the connection overlaps at least a portion of the storage electrode line.

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

a data line and a gate line formed on the substrate and connected to the pixel electrode via a switching element,

wherein at least a portion of the connection overlaps at least a portion of the gate line.

24. The liquid crystal display of claim 23 , wherein

the connection overlaps the gate line in a width direction of the gate line.

25. The liquid crystal display of claim 23 , further comprising:

a storage electrode line, formed on the substrate, to transmit a common voltage,

wherein at least a portion of the connection overlaps at least a portion of the storage electrode line.

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

a storage electrode line, formed on the substrate, to transmit a common voltage,

wherein at least a portion of the connection overlaps at least a portion of the storage electrode line.

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

a color filter disposed on the substrate.

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

a light blocking member disposed on the substrate.

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

a second substrate facing the substrate; and

a spacer provided to maintain a gap between the substrate and the second substrate disposed on the substrate.

30. A liquid crystal display, comprising:

a substrate;

a data line and a gate line formed on the substrate; and

a pixel electrode, comprising a plurality of minute branches, formed on the substrate,

wherein the pixel electrode comprises a first region and a second region in which a first distance and a second distance are provided according to an interval formed between the respective neighboring minute branches, wherein the second distance is larger than the first distance, and a third region is provided between the first region and the second region, and the third region having an interval between the neighboring minute branches that gradually changes, wherein the pixel electrode comprises a first subpixel electrode and a second subpixel electrode that are separated from each other, the first subpixel electrode and the second subpixel electrode are configured to have different voltages from each other, and wherein

the first subpixel electrode is connected to the data line and the gate line via a first switching element,

the second subpixel electrode is connected to the data line and the gate line via a second switching element, and

the second subpixel electrode is connected to a down capacitor via a third switching element.

31. A liquid crystal display, comprising:

a substrate; and

a pixel electrode, comprising a plurality of branches, disposed on the substrate,

wherein the pixel electrode comprises a first region, a second region, and a third region, each of the first region, the second region, and the third region having at least three minute branches,

wherein intervals between the respective neighboring branches of the first region have a first distance throughout the first region, and

wherein intervals between the respective neighboring branches of the third region have a varying distance.

32. The liquid crystal display of claim 31 , wherein intervals between the respective neighboring branches of the second region have a second distance throughout the second region, the second distance being larger than the first distance.

Assignments (2)
CHANGE OF NAME Recorded Aug 28, 2012
From: SAMSUNG ELECTRONICS CO., LTD.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 028859/0785 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 14, 2010
From: KIM, YOON-JANG; NA, BYOUNG-SUN; PARK, IN-HO; PARK, KEE-BUM; CHO, YUN-JUNG
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 024385/0841 →