Organic light emitting display

Patent metadata

Field	Value
Publication number	US-10019936-B2
Application number	US-201313917080-A
Country	US
Kind code	B2
Filing date	Jun 13, 2013
Priority date	Jan 11, 2013
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

There is provided an organic light emitting display that includes a plurality of pixels are arranged in a plurality of rows and columns Each of the pixels includes a plurality of sub pixels. At least one sub pixel of the plurality of sub pixels of at least one pixel is divided into a plurality of divisional sub pixels. Since the divisional sub pixels alternately emit light, it is possible to reduce deterioration speed of the sub pixels, thereby preventing an afterimage from being generated by deterioration of the sub pixels.

First claim

What is claimed is:

1. An organic light emitting display including a first region and a second region, the display comprising:
a plurality of pixels arranged in a plurality of rows and columns throughout the first region and the second region of the display,
wherein each of the pixels is composed of one blue sub pixel, one green sub pixel and one red sub pixel,
wherein each of the pixels arranged within the first region is comprised of at least one sub pixel that includes a plurality of divisional sub pixels that emit light of a same color and are independently controlled,
wherein the pixels arranged within the second region includes none of a sub pixel that includes a plurality of divisional sub pixels of a same color, and
wherein each of the divisional sub pixels has a smaller size than each of the plurality of sub pixels.

2. The organic light emitting display of claim 1 , and wherein each of the red sub pixel, the green sub pixel, and the blue sub pixel within pixels arranged within the first region of the display is divided into a plurality of divisional sub pixels, wherein the first region is a region adjacent to and along a bottom edge of the plurality of rows and columns corresponding to where a logo, a time and/or subtitles of a broadcaster are continuously displayed.

3. The organic light emitting display of claim 2 , wherein each of the red sub pixel, the green sub pixel, and the blue sub pixel within pixels that are arranged within the first region of the display is composed of differing numbers of divisional sub pixels, respectively.

4. The organic light emitting display of claim 2 , wherein each of the divisional sub pixels within a sub pixel emit light of a same color and are adapted to be driven in an alternating manner.

5. The organic light emitting display of claim 1 , and wherein only the blue sub pixel of pixels arranged within the first region of the display is divided into a plurality of divisional sub pixels.

6. The organic light emitting display of claim 1 , wherein the divisional sub pixels within one of the sub pixels within a pixel arranged within the first region of the display alternately emits light.

7. The organic light emitting display of claim 6 , wherein the plurality of divisional sub pixels within any one of the sub pixels of a pixel arranged within the first region of the display alternately emits light according to a frame cycle or a time cycle.

8. The organic light emitting display of claim 1 , wherein the plurality of divisional sub pixels are alternately driven according to a frame cycle or a time cycle only subsequent to a total operation time of the display exceeding a predetermined value.

9. The organic light emitting display of claim 8 , wherein the predetermined value is 300 hours.

10. The organic light emitting display of claim 1 , further comprising:
a plurality of scan lines, each being coupled to a plurality of sub pixels in a row; and
a plurality of data lines, each being coupled to a plurality of sub pixels in a column, wherein each of the first region and the second region span a plurality of contiguous rows and a plurality of contiguous columns of pixels.

11. The organic light emitting display of claim 10 , wherein ones of the plurality of divisional sub pixels within one of the sub pixels of a pixel within the first region emit light of a same color and are independently controlled by being connected to separate signal lines.

12. The organic light emitting display of claim 1 ,
wherein for all of the pixels arranged within the first region, all of the divisional sub pixels within a sub pixel emit a same color of light, and all of the sub pixels within a pixel emit different color light from each other, and
each of the divisional sub pixels within a sub pixel being independently controlled,
wherein the color of light emitted by the sub pixels are selected from a group consisting of green, red and blue.

13. The organic light emitting display of claim 1 , wherein each of the pixels is comprised of a plurality of sub pixels that have a same size and a same shape.

14. The organic light emitting display of claim 13 , wherein each of the divisional sub pixels within a sub pixel of a pixel within the first region emits light having a same color, wherein each of the sub pixels within a pixel emits light of a different color from one another, the color being selected from a group consisting of red, green and blue, wherein the display is composed of two contiguous first regions and one contiguous second region.

15. The organic light emitting display of claim 1 , wherein only one of the plurality of divisional sub pixels within a sub pixel may emit light prior to a total operation time of the display reaching a predetermined value, and then only another of the plurality of divisional sub pixels within a sub pixel may emit light upon a total operation time of the display exceeding a predetermined value, the predetermined value being 300 hours.

16. An organic light emitting display including a first region and a second region, the display comprising:
a plurality of pixels arranged in a plurality of rows and columns throughout the first region and the second region of the display,
wherein each of the pixels is composed of one red sub pixel, one green sub pixel and one blue sub pixel,
wherein each of the pixels arranged within the first region is comprised of at least one sub pixel that includes a plurality of divisional sub pixels that emit light of a same color and are independently controlled,
wherein the pixels arranged within the second region includes none of a sub pixel that includes a plurality of divisional sub pixels of a same color,
wherein the pixels of the first region of the display are intensively arranged in a portion of the display where image sticking occurs most frequently, and
wherein each of the divisional sub pixels has a smaller size than each of the plurality of sub pixels.

17. The organic light emitting display of claim 16 , wherein the first region is a region adjacent to and along a bottom edge of the plurality of rows and columns corresponding to where a logo, a time and/or subtitles of a broadcaster are continuously displayed.

18. The organic light emitting display of claim 16 , wherein the first region is a region adjacent to a corner of the plurality of rows and columns, wherein each of the first region and the second region span a plurality of contiguous rows and a plurality of contiguous columns of pixels.

19. An organic light emitting display including a first region and a second region, the display comprising:
a plurality of pixels arranged in a plurality of rows and columns throughout the first region and the second region of the display,
wherein each of the pixels is composed of at least one blue sub pixel, one green sub pixel and one red sub pixel,
wherein a configuration of the sub pixels of the pixels arranged within the first region is different from a configuration of the sub pixels of the pixels arranged within the second region,
wherein the first region corresponds to only an edge or a corner of the display where a same image is often continuously displayed and is prone to image sticking, and the second region corresponds to remaining portions of the display,
wherein each of the blue sub pixel, the green sub pixel and the red sub pixel of each pixel in each of the first and second regions are contiguous and mutually exclusive, and
wherein each pixel within the first region includes a sub pixel that includes a plurality of independently contr

Assignees

• Jung Hae Goo
• Ryu Do Hyung
• Samsung Display Co Ltd

Inventors

• Jung Hae-Goo
• Ryu Do-Hyung

Classifications

• G09G2320/043

  Preventing or counteracting the effects of ageing · CPC title

• G09G2300/0443

  with several sub-pixels for the same colour in a pixel, not specifically used to display gradations (G09G3/364 takes precedence) · CPC title

• G09G3/3208 Primary

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title

• H10K59/38

  comprising colour filters or colour changing media [CCM] · CPC title