Organic light emitting display device and driving method thereof

Patent metadata

Field	Value
Publication number	US-9773454-B2
Application number	US-201414449530-A
Country	US
Kind code	B2
Filing date	Aug 1, 2014
Priority date	Aug 29, 2013
Publication date	Sep 26, 2017
Grant date	Sep 26, 2017

Abstract

An organic light emitting display device includes a plurality of pixels, a data driver, and a plurality of demultiplexers. The pixels are in an area defined by scan lines and data lines. The data driver progressively supplies data signals to output lines every horizontal period. The demultiplexers are coupled to respective ones of the output lines. Each demultiplexer supplies data signals to a first number of data lines coupled to the demultiplexer during a horizontal period.

First claim

What is claimed is:

1. An organic light emitting display device, comprising:
a plurality of pixels in an area defined by scan lines and data lines;
a data driver to progressively supply a plurality of data signals to output lines every horizontal period; and
a plurality of demultiplexers (DEMUXs) coupled to respective ones of the output lines, each DEMUX to supply data signals to a number of first data lines coupled to the DEMUX during a first horizontal period and to supply one or more data signals to a number of second data lines coupled to the DEMUX during a second horizontal period, at least one of the second data lines between adjacent ones of the first data lines, wherein one of the first data lines and one of the second data lines are between pixels on a n-th vertical line and pixels on a (n+1)-th vertical line, and are coupled to pixels on a same horizontal line.

2. The display device as claimed in claim 1 , wherein the number of data lines is coupled to pixels on a same horizontal line.

3. The display device as claimed in claim 1 , wherein each DEMUX is coupled two or more odd-numbered and two or more even-numbered data lines.

4. The display device as claimed in claim 3 , wherein:
the odd-numbered data lines are coupled to pixels on an 1-th horizontal line, and
the even-numbered data lines are coupled to pixels on an (1+1)-th horizontal line.

5. The display device as claimed in claim 4 , wherein adjacent odd-numbered and even-numbered data lines are alternately coupled to pixels on a same vertical line.

6. The display device as claimed in claim 3 , wherein:
the odd-numbered data lines are coupled in a zigzag form to pixels on different horizontal lines, and
the even-numbered data lines are coupled in a zigzag form to pixels on different horizontal lines.

7. The display device as claimed in claim 6 , wherein adjacent odd-numbered and even-numbered data lines are alternately coupled to pixels on a same vertical line.

8. The display device as claimed in claim 1 , further comprising:
a scan driver to supply a scan signal to the scan lines; and
a DEMUX controller to supply, to each DEMUX, control signals to overlap data signals progressively supplied from the data driver.

9. The display device as claimed in claim 8 , wherein the DEMUX controller is to output the control signals, so that data signals corresponding to a (j+1)-th horizontal line are supplied when a scan signal is supplied to a scan line on a j-th horizontal line.

10. The display device as claimed in claim 9 , wherein the DEMUX controller is to output the control signals, so that the data signal corresponding to a first horizontal line is supplied before a scan signal is supplied to a first scan line.

11. An organic light emitting display device, comprising:
a plurality of pixels in an area defined by scan lines and data lines;
a data driver to progressively supply a plurality of data signals to output lines every horizontal period;
a plurality of DEMUXs coupled to respective ones of the output lines; and
a DEMUX controller to control each DEMUX to supply data signals to first data lines coupled to each DEMUX during a first horizontal period, and to supply data signals to second data lines coupled to each DEMUX during a second horizontal period, wherein the first data lines are respectively coupled to pixels on an 1-th horizontal line, wherein the second data lines are respectively coupled to pixels on an (1+1)-th horizontal line, wherein at least one of the second data lines is between adjacent ones of the first data lines, and wherein one of first data lines and one of the second data lines are between pixels on a n-th vertical line and pixels on a (n+1)-th vertical line, and are coupled to pixels on a same horizontal line.

12. The display device as claimed in claim 11 , wherein the data signal is supplied to the second data lines, via said each DEMUX, during a period in which a scan signal is supplied to pixels coupled to the first data lines.

13. The display device as claimed in claim 11 , wherein:
the first data lines are odd-numbered data lines, and
the second data lines are even-numbered data lines.

14. The display device as claimed in claim 13 , wherein adjacent odd-numbered and even-numbered data lines are alternately coupled to pixels on a same vertical line.

15. The display device as claimed in claim 11 , wherein:
the first data lines include odd-numbered data lines and even-numbered data lines, and
the second data lines include odd-numbered data lines and even-numbered data lines, which are not included in the first data lines.

16. The display device as claimed in claim 15 , wherein adjacent odd-numbered and even-numbered data lines are alternately coupled to pixels on a same vertical line.

17. A method of driving an organic light emitting display device, the method comprising:
supplying a data signal to first data lines coupled to a DEMUX during a first horizontal period; and
supplying a data signal to second data lines coupled to the DEMUX during a second horizontal period, wherein the first data lines are respectively coupled to pixels on an 1-th horizontal line, wherein the second data lines are respectively coupled to pixels on an (1+1)-th horizontal line, wherein at least one of the second data lines is between adjacent ones of the first data lines, and wherein one of first data lines and one of the second data lines are between pixels on a n-th vertical line and pixels on a (n+1)-th vertical line, and are coupled to pixels on a same horizontal line.

18. The method as claimed in claim 17 , wherein the data signal is supplied to the second data lines via the DEMUX during a period in which a scan signal is supplied to pixels coupled to the first data lines.

19. The method as claimed in claim 17 , wherein:
the first data lines are odd-numbered data lines, and
the second data lines are even-numbered data lines.

20. The method as claimed in claim 17 , wherein:
the first data lines include odd-numbered data lines and even-numbered data lines, and
the second data lines include odd-numbered data lines and even-numbered data lines, which are not included in the first data lines.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Yang-Wan

Classifications

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title

• G09G2300/0819

  used for counteracting undesired variations, e.g. feedback or autozeroing · CPC title

• G09G2320/043

  Preventing or counteracting the effects of ageing · CPC title

• G09G3/3233

  with pixel circuitry controlling the current through the light-emitting element · 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