IP Library › Granted Patent US 10,156,757
Granted Patent B2
US 10,156,757 · App. 15/271,448 · Granted Dec 18, 2018

Liquid crystal display device

Inventors: Hyun Sup Lee (Hwaseong-si, KR); Jung Hun Noh (Yongin-si, KR); Keun Kyu Song (Seongnam-si, KR); Sang Hee Jang (Bucheon-si, KR); Byung Seok Choi (Seoul, KR)
Assignee: SAMSUNG DISPLAY CO. LTD.
G02F1/134336G02F1/136286G02F1/133514G02F1/134363G02F2001/134372G02F2201/121G02F2201/123
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Quick Facts
Patent No.
US 10,156,757
App. No.
15/271,448
Granted
Dec 18, 2018
Kind
B2
Abstract

A liquid crystal display includes first and second substrates facing each other and including pixels in a first direction and in a second direction that crosses the first direction, and pixel electrodes disposed in the pixels, respectively, over a common electrode, each of the pixel electrodes including branch electrodes, which extend in the second direction, where the pixels include first pixels, which display a white color, and second pixels, which display one of a red color, a green color, and a blue color, the pixel electrodes include first pixel electrodes, which are disposed in the first pixels, respectively, and second pixel electrodes, which are disposed in the second pixels, respectively, and a first average distance between every two adjacent first and second pixel electrodes in the first direction is smaller than a second average distance between every two adjacent second pixel electrodes in the first direction.

Claims (139)

1. A liquid crystal display device, comprising:

first and second substrates facing each other and including a plurality of pixels, which are arranged in a form of a matrix to be adjacent to one another in a first direction and in a second direction which crosses the first direction;

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

a common electrode disposed on the first substrate; and

pixel electrodes disposed in the plurality of pixels, respectively, over the common electrode, each of the pixel electrodes including branch electrodes, which extend in the second direction,

wherein:

the plurality of pixels includes first pixels, which display a white color, and second pixels, which display one of a red color, a green color, and a blue color;

the pixel electrodes include first pixel electrodes, which are disposed in the first pixels, respectively, and second pixel electrodes, which are disposed in the second pixels, respectively; and

a first average distance between every two adjacent first and second pixel electrodes in the first direction is smaller than a second average distance between every two adjacent second pixel electrodes in the first direction,

wherein two adjacent pixels of the plurality of pixels in the first direction and two adjacent pixels of the plurality of pixels in the second direction provide a unit pixel, the unit pixel is repeatedly arranged in the first direction and the second direction and the unit pixel includes one first pixel and three second pixels,

wherein the first pixel displays a white color, the three second pixels respectively display a red color, a green pixel, and a blue color.

2. The liquid crystal display device of claim 1 , wherein a first average horizontal length, which is an average of lengths of the first pixel electrodes in the first direction, is longer than a second average horizontal length, which is an average of lengths of the second pixel electrodes in the first direction.

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

gate lines extending in the first direction and data lines extending in the second direction,

wherein an average of distances between the first pixel electrodes and the respective neighboring data lines is smaller than an average of distances between the second pixel electrodes and the respective neighboring data lines.

4. The liquid crystal display device of claim 1 , wherein a number of branch electrodes included in each of the first pixel electrodes is larger than a number of branch electrodes included in each of the second pixel electrodes.

5. The liquid crystal display device of claim 4 , wherein an average of distances between the branch electrodes included in each of the first pixel electrodes is equal to or smaller than, an average of distances between the branch electrodes included in each of the second pixel electrodes.

6. The liquid crystal display device of claim 1 , wherein an arrangement of the first pixel displaying the white color, the second pixel displaying the red color, the second pixel displaying the green pixel, and the second pixel displaying the blue color is uniform for all unit pixels of the plurality of pixels.

7. The liquid crystal display device of claim 1 , wherein when the first pixel electrodes are disposed adjacent to one another in the first direction, an average of distances among the first pixel electrodes is equal to or smaller than the first average distance.

8. A liquid crystal display device, comprising:

first and second substrates facing each other and including a plurality of pixels, which are arranged in a form of a matrix to be adjacent to one another in a first direction and in a second direction which crosses the first direction;

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

a common electrode disposed on the first substrate; and

pixel electrodes disposed in the plurality of pixels, respectively, over the common electrode, each of the pixel electrodes including branch electrodes, which extend in the second direction,

wherein:

the plurality of pixels includes first pixels, which display a white color, and second pixels, which display one of a red color, a green color, and a blue color;

the pixel electrodes include first pixel electrodes, which are disposed in the first pixels, respectively, and second pixel electrodes, which are disposed in the second pixels, respectively; and

a first average distance between every two adjacent first and second pixel electrodes in the first direction is smaller than a second average distance between every two adjacent second pixel electrodes in the first direction,

wherein the first average distance is in a range of 4.5 micrometers to 4.7 micrometers.

9. A liquid crystal display device, comprising:

first and second substrates facing each other and including a plurality of pixels, which are arranged in a form of a matrix to be adjacent to one another in a first direction and in a second direction which crosses the first direction;

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

a common electrode disposed on the first substrate; and

pixel electrodes disposed in the plurality of pixels, respectively, over the common electrode, each of the pixel electrodes including branch electrodes, which extend in the second direction,

wherein:

the plurality of pixels includes first pixels, which display a white color, and second pixels, which display one of a red color, a green color, and a blue color;

the pixel electrodes include first pixel electrodes, which are disposed in the first pixels, respectively, and second pixel electrodes, which are disposed in the second pixels, respectively; and

a first average distance between every two adjacent first and second pixel electrodes in the first direction is smaller than a second average distance between every two adjacent second pixel electrodes in the first direction,

wherein an average of distances between the branch electrodes included in each of the first pixel electrodes is larger than an average of distances between the branch electrodes included in each of the second pixel electrodes.

10. A liquid crystal display device, comprising:

first and second substrates facing each other and including a plurality of pixels, which are arranged in a form of a matrix to be adjacent to one another in a first direction and in a second direction which crosses the first direction;

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

a common electrode disposed on the first substrate; and

pixel electrodes disposed in the plurality of pixels, respectively, over the common electrode, each of the pixel electrodes including branch electrodes, which extend in the second direction,

wherein:

the plurality of pixels includes first pixels, which display a white color, second pixels, which display one of a red color, a green color, and a blue color and are not adjacent to any one of the first pixels in the first direction, and third pixels, which display one of a red color, a green color, and a blue color and are adjacent to the first pixels in the first direction;

the pixel electrodes include first pixel electrodes, which are disposed in the first pixels, respectively, second pixel electrodes, which are disposed in the second pixels, respectively, and third pixel electrodes, which are disposed in the third pixels, respectively;

every two adjacent first and third pixel electrodes in the first direction are spaced apart by a first average distance;

every two adjacent third pixel electrodes in the first direction are spaced apart by a second average distance;

every two second and third pixel electrodes in the first direction are spaced apart by a third average distance;

the first average distance is smaller than the second and third average distances; and

the second and third average distances are identical,

wherein two adjacent pixels of the plurality of pixels in the first direction and two adjacent pixels of the plurality of pixels in the second direction provide a unit pixel, the unit pixel is repeatedly arranged in the first direction and the second direction and the unit pixel includes one first pixel and three second or third pixels,

wherein the unit pixel includes a first pixel displaying a white color, a second or third pixel displaying a red color, a second or third pixel displaying a green pixel, and a second or third pixel displaying a blue color.

11. The liquid crystal display device of claim 10 , wherein the third pixel electrodes are disposed closer to the respective neighboring first pixel electrodes on a first side thereof in the first direction than to the respective neighboring second pixel electrodes on a second side thereof in the first direction.

12. The liquid crystal display device of claim 10 , wherein when the first pixel electrodes are disposed adjacent to one another in the first direction, an average of distances among the first pixel electrodes is equal to or smaller than the first average distance.

13. A liquid crystal display device, comprising:

first and second substrates facing each other and including a plurality of pixels, which are arranged in a form of a matrix to be adjacent to one another in a first direction and in a second direction which crosses the first direction;

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

a common electrode disposed on the first substrate; and

pixel electrodes disposed in the plurality of pixels, respectively, over the common electrode, each of the pixel electrodes including branch electrodes, which extend in the second direction,

wherein:

the plurality of pixels includes first pixels, which display a white color, second pixels, which display one of a red color, a green color, and a blue color and are not adjacent to any one of the first pixels in the first direction, and third pixels, which display one of a red color, a green color, and a blue color and are adjacent to the first pixels in the first direction;

the pixel electrodes include first pixel electrodes, which are disposed in the first pixels, respectively, second pixel electrodes, which are disposed in the second pixels, respectively, and third pixel electrodes, which are disposed in the third pixels, respectively;

every two adjacent first and third pixel electrodes in the first direction are spaced apart by a first average distance;

every two adjacent third pixel electrodes in the first direction are spaced apart by a second average distance;

every two second and third pixel electrodes in the first direction are spaced apart by a third average distance;

the first average distance is smaller than the second and third average distances; and

the second and third average distances are identical,

wherein the first average distance is in a range of 4.5 micrometers to 4.7 micrometers.

14. A liquid crystal display device, comprising:

first and second substrates facing each other and including a plurality of pixels, which are arranged in a form of a matrix to be adjacent to one another in a first direction and in a second direction which crosses the first direction;

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

a common electrode disposed on the first substrate; and

pixel electrodes disposed in the plurality of pixels, respectively, over the common electrode, each of the pixel electrodes including branch electrodes, which extend in the second direction,

wherein:

the plurality of pixels includes first pixels, which display a white color, second pixels, which display one of a red color, a green color, and a blue color and are not adjacent to any one of the first pixels in the first direction, and third pixels, which display one of a red color, a green color, and a blue color and are adjacent to the first pixels in the first direction;

the pixel electrodes include first pixel electrodes, which are disposed in the first pixels, respectively, second pixel electrodes, which are disposed in the second pixels, respectively, and third pixel electrodes, which are disposed in the third pixels, respectively;

every two adjacent first and third pixel electrodes in the first direction are spaced apart by a first average distance;

every two adjacent third pixel electrodes in the first direction are spaced apart by a second average distance;

every two second and third pixel electrodes in the first direction are spaced apart by a third average distance;

the first average distance is smaller than the second and third average distances; and

the second and third average distances are identical,

wherein:

an average of lengths of the first pixel electrodes in the first direction is a first average horizontal length;

an average of lengths of the second pixel electrodes in the first direction is a second average horizontal length;

an average of lengths of the third pixel electrodes in the first direction is a third average horizontal length;

the second average horizontal length is longer than the third average horizontal length; and

the first average horizontal length is longer than the second average horizontal length.

15. A liquid crystal display device, comprising:

first and second substrates facing each other and including a plurality of pixels, which are arranged in a form of a matrix to be adjacent to one another in a first direction and in a second direction which crosses the first direction;

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

a common electrode disposed on the first substrate; and

pixel electrodes disposed in the plurality of pixels, respectively, over the common electrode, each of the pixel electrodes including branch electrodes, which extend in the second direction,

wherein:

the plurality of pixels includes first pixels, which display a white color, second pixels, which display one of a red color, a green color, and a blue color and are not adjacent to any one of the first pixels in the first direction, and third pixels, which display one of a red color, a green color, and a blue color and are adjacent to the first pixels in the first direction;

the pixel electrodes include first pixel electrodes, which are disposed in the first pixels, respectively, second pixel electrodes, which are disposed in the second pixels, respectively, and third pixel electrodes, which are disposed in the third pixels, respectively;

every two adjacent first and third pixel electrodes in the first direction are spaced apart by a first average distance;

every two adjacent third pixel electrodes in the first direction are spaced apart by a second average distance;

every two second and third pixel electrodes in the first direction are spaced apart by a third average distance;

the first average distance is smaller than the second and third average distances; and

the second and third average distances are identical, further comprising:

gate lines extending in the first direction and data lines extending in the second direction,

wherein an average of distances between the first pixel electrodes and the respective neighboring data lines is smaller than an average of distances between the second pixel electrodes and the respective neighboring data lines,

wherein:

an average of distances between the third pixel electrodes and the respective neighboring data lines in a direction in which the third pixel electrodes are adjacent to the respective first pixel electrodes is the same as the average of the distances between the first pixel electrodes and the respective neighboring data lines; and

an average of the distances between the third pixel electrodes and the respective neighboring data lines in a direction in which the third pixel electrodes are adjacent to the respective second pixel electrodes is the same as the average of the distances between the second pixel electrodes and the respective neighboring data lines.

16. A liquid crystal display device, comprising:

first and second substrates facing each other and including a plurality of pixels, which are arranged in a form of a matrix to be adjacent to one another in a first direction and in a second direction which crosses the first direction;

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

a common electrode disposed on the first substrate; and

pixel electrodes disposed in the plurality of pixels, respectively, over the common electrode, each of the pixel electrodes including branch electrodes, which extend in the second direction,

wherein:

the plurality of pixels includes first pixels, which display a white color, second pixels, which display one of a red color, a green color, and a blue color and are not adjacent to any one of the first pixels in the first direction, and third pixels, which display one of a red color, a green color, and a blue color and are adjacent to the first pixels in the first direction;

the pixel electrodes include first pixel electrodes, which are disposed in the first pixels, respectively, second pixel electrodes, which are disposed in the second pixels, respectively, and third pixel electrodes, which are disposed in the third pixels, respectively;

every two adjacent first and third pixel electrodes in the first direction are spaced apart by a first average distance;

every two adjacent third pixel electrodes in the first direction are spaced apart by a second average distance;

every two second and third pixel electrodes in the first direction are spaced apart by a third average distance;

the first average distance is smaller than the second and third average distances; and

the second and third average distances are identical,

wherein:

an average of distances between the branch electrodes included in each of the second pixel electrodes is larger than an average of distances between the branch electrodes included in each of the third pixel electrodes; and

an average of distances between the branch electrodes included in each of the first pixel electrodes is larger than an average of distances between the branch electrodes included in each of the second pixel electrodes.

17. A liquid crystal display device, comprising:

first and second substrates facing each other and including a plurality of pixels, which are arranged in a form of a matrix to be adjacent to one another in a first direction and in a second direction which crosses the first direction;

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

a common electrode disposed on the first substrate; and

pixel electrodes disposed in the plurality of pixels, respectively, over the common electrode, each of the pixel electrodes including branch electrodes, which extend in the second direction,

wherein:

the plurality of pixels includes first pixels, which display a white color, second pixels, which display one of a red color, a green color, and a blue color and are not adjacent to any one of the first pixels in the first direction, and third pixels, which display one of a red color, a green color, and a blue color and are adjacent to the first pixels in the first direction;

the pixel electrodes include first pixel electrodes, which are disposed in the first pixels, respectively, second pixel electrodes, which are disposed in the second pixels, respectively, and third pixel electrodes, which are disposed in the third pixels, respectively;

every two adjacent first and third pixel electrodes in the first direction are spaced apart by a first average distance;

every two adjacent third pixel electrodes in the first direction are spaced apart by a second average distance;

every two second and third pixel electrodes in the first direction are spaced apart by a third average distance;

the first average distance is smaller than the second and third average distances; and

the second and third average distances are identical,

wherein:

a number of branch electrodes included in each of the second pixel electrodes is larger than a number of branch electrodes included in each of the third pixel electrodes; and

a number of branch electrodes included in each of the first pixel electrodes is larger than the number of branch electrodes included in each of the second pixel electrodes.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 21, 2016
From: LEE, HYUN SUP; NOH, JUNG HUN; SONG, KEUN KYU; JANG, SANG HEE; CHOI, BYUNG SEOK
To: SAMSUNG DISPLAY CO. LTD.
Reel/Frame 039815/0413 →
Priority Claims (1)
KR 10-2016-0030225 · Mar 14, 2016 · national
Continuity (1)
Related Publication 20170261821A1 · Sep 14, 2017