Display device having a plurlity of pixel arrays connected to different data lines

Patent metadata

Field	Value
Publication number	US-11935453-B2
Application number	US-202117645081-A
Country	US
Kind code	B2
Filing date	Dec 20, 2021
Priority date	May 17, 2021
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

A display device includes four pixel arrays, a data driver, and a demultiplexer. The data driver is electrically connected to first and second data output lines. The demultiplexer electrically connects first and second data lines to the first data output line and electrically connects third and fourth data lines to the second data output line. The first to fourth pixel arrays are adjacent to the first to fourth data lines, respectively. Each of the first to fourth pixel arrays includes first and second color pixels. The first color pixels in the second pixel array are connected to the second data line, the second color pixels in the second pixel array are connected to the third data line, the second color pixels in the third pixel array are connected to the third data line, and the first color pixels in the third pixel array are connected to the second data line.

First claim

What is claimed is:

1. A display device, comprising:
first to fourth pixel arrays;
a data driver electrically connected to a first data output line and a second data output line; and
a demultiplexer configured to electrically connect a first data line and a second data line to the first data output line and to electrically connect a third data line and a fourth data line to the second data output line, wherein:
the first to fourth pixel arrays are arranged adjacent to the first to fourth data lines, respectively,
each of the first to fourth pixel arrays includes first color pixels and second color pixels,
the first color pixels in the second pixel array are connected to the second data line and the second color pixels in the second pixel array are connected to the third data line, and
the second color pixels in the third pixel array are connected to the third data line and the first color pixels in the third pixel array are connected to the second data line.

2. The display device of claim 1 , wherein:
the first to fourth pixel arrays are arranged spaced from one another in a first direction, and
in each of the first to fourth pixel arrays, the first color pixels and the second color pixels are alternately arranged one-by-one in a second direction crossing the first direction.

3. The display device of claim 1 , wherein the data driver is configured to:
output a data signal of a first color, which is to be provided to the first color pixels, to the first data output line, and
output a data signal of a second color, which is to be provided to the second color pixels, to the second data output line.

4. The display device of claim 1 , wherein:
the data driver is electrically connected to a third data output line and a fourth data output line, and
the demultiplexer is configured to electrically connect a fifth data line and a sixth data line to the third data output line, and to electrically connect a seventh data line and an eighth data line to the fourth data output line.

5. The display device of claim 4 , further comprising:
third color pixels,
wherein each of the third color pixels is connected to a corresponding data line among the fifth to eighth data lines.

6. The display device of claim 5 , wherein the data driver is configured to output a data signal of a third color, which is to be provided to the third color pixels, to the third data output line and the fourth data output line.

7. The display device of claim 4 , wherein:
the fifth data line is interposed between the first data line and the second data line,
the sixth data line is interposed between the second data line and the third data line,
the seventh data line is interposed between the third data line and the fourth data line, and
the eighth data line is arranged adjacent to the fourth data line.

8. The display device of claim 1 , wherein the demultiplexer includes:
a first switching transistor connected between the first data output line and the first data line;
a second switching transistor connected between the first data output line and the second data line;
a third switching transistor connected between the second data output line and the third data line; and
a fourth switching transistor connected between the second data output line and the fourth data line, wherein the first switching transistor and the third switching transistor are configured to operate in response to a first switching signal, and the second switching transistor and the fourth switching transistor are configured to operate in response to a second switching signal.

9. The display device of claim 8 , further comprising:
a driving controller configured to output the first switching signal and the second switching signal.

10. The display device of claim 1 , wherein:
the first color pixels are red color pixels, and
the second color pixels are blue color pixels.

11. The display device of claim 1 , further comprising:
a fifth data line and a sixth data line electrically connected to the data driver, wherein:
the first color pixels in the first pixel array are connected to the first data line, and the second color pixels in the first pixel array are connected to the fifth data line, and
the second color pixels in the fourth pixel array are connected to the fourth data line, and the first color pixels in the fourth pixel array are connected to the sixth data line.

12. A display device, comprising:
a display panel including first color pixels and second color pixels;
a data driver configured to electrically connect to a first data output line and a second data output line; and
a demultiplexer configured to electrically connect a first data line and a second data line to the first data output line and to electrically connect a third data line and a fourth data line to the second data output line, wherein:
the first color pixels in a first column are connected to the first data line, the first color pixels in a third column connected to the second data line, and the first color pixels in a fifth column are connected to the second data line,
the second color pixels in the third column are connected to the third data line and the second color pixels in the fifth column are connected to the third data line, and second color pixels in a seventh column are connected to the fourth data line, and
the data driver is configured to output a data signal of a first color, which is to be provided to the first color pixels, to the first data output line and to output a data signal of a second color, which is to be provided to the second color pixels, to the second data output line.

13. The display device of claim 12 , wherein the first color pixels and the second color pixels are alternately arranged in a first direction, and are alternately arranged in a second direction crossing the first direction.

14. The display device of claim 12 , wherein:
the data driver is electrically connected to a third data output line and a fourth data output line, and
the demultiplexer is configured to electrically connect a fifth data line and a sixth data line to the third data output line, and to electrically connect a seventh data line and an eighth data line to the fourth data output line.

15. The display device of claim 14 , further comprising:
third color pixels,
wherein each of the third color pixels is connected to a corresponding data line among the fifth to eighth data lines.

16. The display device of claim 15 , wherein the data driver is configured to output a data signal of a third color, which is to be provided to the third color pixels, to the third data output line and the fourth data output line.

17. The display device of claim 15 , wherein:
the first color pixels are red color pixels,
the second color pixels are blue color pixels, and
the third color pixels are green color pixels.

18. The display device of claim 12 , wherein the demultiplexer is arranged on the display panel.

19. A display device, comprising:
a display panel including first color pixels and second color pixels;
a data driver configured to electrically connect to a first data output line and a second data output line; and
a demultiplexer configured to electrically connect a first data line and a second data line to the first data output line and to electrically connect a third data line and a fourth data line to the second data output line, wherein:
the first color pixels are connected to a corresponding data line among the first data line and the second data line,
the second color pixe

Assignees

• Samsung Display Co Ltd

Inventors

• Park Sehyuk
• Roh Jinyoung
• Bae Woomi
• Seo Hae-Kwan
• Sohn Youngha
• Yang Jin-Wook

Classifications

• G09G3/2003 Primary

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title

• G09G2300/0452

  Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components · CPC title

• G09G2310/027

  Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters · CPC title

• G09G2310/0297

  Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns · CPC title

• G09G2330/021

  Power management, e.g. power saving · CPC title