Organic light-emitting display device and driving method thereof

• US 9,990,889 B2
• Filed: 01/30/2015
• Issued: 06/05/2018
• Est. Priority Date: 08/25/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Group)
• Original Assignee: Samsung Display Company Limited (Samsung Group)
• Inventors: Song, Jun Yong, Min, Kyung Youl
• Primary Examiner(s): Boddie, William
• Assistant Examiner(s): Schnirel, Andrew
• Application Number:
  US14/610,214
• Publication Number:
  US 20160055800A1
• Time in Patent Office: 1,222 Days
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2310/0297 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 Class Codes: G09G 2320/0673 for control of gamma adjustment, e.g. selecting another gamma curve
• CPC Class Codes: G09G 3/3291 in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements

Abstract

A display device has first and second pixel columns and at least one third pixel column. The first pixel column includes first pixels to emit light of a first color and a second pixels to emit light of a second color alternately arranged in a first direction. The second pixel column includes the first pixels and the second pixels arranged in the first direction in a reverse order from the first pixel column. The at least one third pixel column includes third pixels to emit light of a third color and arranged in the first direction. The first and second pixel columns are alternately arranged in a second direction crossing the first direction. The third pixel column is between the first and second pixel columns. The second pixel of the first pixel column and the second pixel of the second pixel column are connected to a same data line.

Claims

1. An organic light-emitting display device, comprising:

a display panel having a plurality of pixels arranged in a matrix, the plurality of pixels including;

a first pixel column including first pixels to emit light of a first color and second pixels to emit light of a second color alternately arranged in a first direction,

a second pixel column including the first pixels and the second pixels arranged in the first direction in a reverse order from the first pixel column, and

at least one third pixel column including third pixels to emit light of a third color and arranged in the first direction, wherein the first pixel column and the second pixel column are alternately arranged along a second direction crossing the first direction, wherein the third pixel column is between the first pixel column and the second pixel column, wherein the second pixel of the first pixel column and the second pixel of the second pixel column are connected to a same data line, and wherein;

one of the first pixels of the first pixel column, one of the first pixels of the second pixel column, and one of the third pixels of the third pixel column, which is arranged next to the first pixel column in the second direction, are connected to a first data line, and

the second pixel of the first pixel column, the second pixel of the second pixel column, and a third pixel of another third pixel column, which is arranged next to the second pixel column in the second direction, are connected to a second data line.

2. The device as claimed in claim 1, further comprising:

a data voltage output to apply a first pixel data voltage or a third pixel data voltage to the first data line and to apply a second pixel data voltage or the third pixel data voltage to the second data line.

3. The device as claimed in claim 2, wherein the data voltage output includes a gamma voltage output to generate the first, second, and third pixel data voltages, a switching circuit to selectively output the first, second, and third pixel data voltages, and a buffer to amplify the first, second, and third pixel data voltages.

4. The device as claimed in claim 2, wherein the data voltage output is in the display panel.

5. The device as claimed in claim 1, wherein:

the display panel includes a plurality of scan lines extending in the second direction,

the first pixel of the first pixel column and the third pixel of the third pixel column, which is arranged next to the first pixel column in the second direction, are connected to different scan lines, and

the second pixel of the second pixel column and the third pixel of the other third pixel column, which is arranged next to the second pixel column in the second direction, are connected to different scan lines.

6. The device as claimed in claim 1, wherein:

the display panel includes a plurality of scan lines extending in the second direction,

the first pixel of the first pixel column and the third pixel of the third pixel column, which is arranged next to the first pixel column in the second direction, are connected to the same scan line, and

the second pixel of the second pixel column and the third pixel of the other third pixel column, which is arranged next to the second pixel column in the second direction, are connected to the same scan line.

7. The device as claimed in claim 1, wherein:

the display panel includes a plurality of scan lines extending in the second direction, and

a plurality of scan signals are applied to the plurality of scan lines, respectively, in such a manner that the second pixel of the second pixel column and then the second pixel of the first pixel column are turned on.

8. The device as claimed in claim 7, wherein the plurality of scan signals are applied to the plurality of scan lines, respectively, in such a manner that the second pixel of the first pixel column and then the third pixel of the third pixel column, which is arranged next to the first pixel column in the second direction, are turned on.

9. The device as claimed in claim 1, wherein the first, second, and third colors are red, blue and green, respectively.

10. An organic light-emitting display device, comprising:

a plurality of data lines extending in a first direction;

a plurality of scan lines extending in the second direction crossing a first direction; and

a plurality of pixels including;

a first pixel column including first pixels to emit light of a first color and second pixels to emit light of a second color alternately arranged in the first direction,

a second pixel column including the first pixels and the second pixels arranged in the first direction in a reverse order from the first pixel column, and

at least one third pixel column including third pixels to emit light of a third color and arranged in the first direction, wherein the plurality of pixels forms a Pen Tile structure in which the first pixel column and the third pixel column are arranged next to each other, and the second pixel column and another third pixel column are arranged next to each other, wherein the second pixel of the first pixel column and the second pixel of the second pixel column are connected to a same data line, and wherein;

the first pixel of the first pixel column, the first pixel of the second pixel column, and a third pixel of the third pixel column, which is arranged next to the first pixel column in the second direction, are connected to a first data line, and

the second pixel of the first pixel column, the second pixel of the second pixel column, and a third pixel of another third pixel column, which is arranged next to the second pixel column in the second direction, are connected to a second data line.

11. The device as claimed in claim 10, further comprising:

a data voltage output to apply a first pixel data voltage or a third pixel data voltage to the first data line and to apply a second pixel data voltage or the third pixel data voltage to the second data line.

12. The device as claimed in claim 11, wherein the data voltage output includes a gamma voltage output to generate the first, second, and third pixel data voltages, a switching circuit to selectively output the first, second, and third pixel data voltages, and a buffer to amplify the first, second, and third pixel data voltages.

13. The device as claimed in claim 10, wherein the first pixel column, the third pixel column, the second pixel column, and another third pixel column are sequentially arranged side-by-side in the second direction.

14. The device as claimed in claim 10, wherein the third pixel column, the first pixel column, another third pixel column, and the second pixel column are sequentially arranged side-by-side in the second direction.

15. A method for driving an organic light-emitting display device, the method comprising:

providing an organic light-emitting display device which includes a display panel having a plurality of pixels arranged in a matrix, the plurality of pixels including;

(a) a first pixel column including first pixels to emit light of a first color and second pixels to emit light of second color alternately arranged in a first direction,

(b) a second pixel column including the first pixels and the second pixels arranged in the first direction in a reverse order from the first pixel column, and

(c) at least one third pixel column including third pixels to emit light of a third color and arranged in the first direction, the first pixel column and the second pixel column alternately arranged along a second direction crossing the first direction, the third pixel column between the first pixel column and the second pixel column, and the second pixel of the first pixel column and the second pixel of the second pixel column connected to a same data line;

applying a first pixel data voltage to the first pixel of each of the first and second pixel columns; and

applying a third pixel data voltage or a second pixel data voltage to the data line to which the second pixel of the first pixel column and the second pixel of the second pixel column are connected, wherein the applying includes;

applying the third pixel data voltage to a third pixel of the third pixel column based on a first scan signal,

applying the second pixel data voltage to the second pixel of the second pixel column based on a second scan signal, which is followed by the first scan signal, and

applying the second pixel data voltage to the second pixel of the first pixel column based on a third scan signal, which is followed by the second scan signal.

16. The method as claimed in claim 15, wherein applying includes:

applying the second pixel data voltage to the second pixel of the first pixel column based on a first scan signal,

applying the second pixel data voltage to the second pixel of the second pixel column based on a second scan signal, which is followed by the first scan signal, and

applying the third pixel data voltage to a third pixel of the third pixel column, which is arranged next to the first pixel column in the second direction, based on a third scan signal, which is followed by the second scan signal.

17. The method as claimed in claim 15, wherein the first, second, and third colors are red, blue and green, respectively.