Organic light emitting diode display

Patent metadata

Field	Value
Publication number	US-9837473-B2
Application number	US-201615142585-A
Country	US
Kind code	B2
Filing date	Apr 29, 2016
Priority date	Apr 29, 2015
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

Disclosed is an organic light emitting diode display that includes a display panel having a display area that is defined with X and Y axes intersecting each other; and a plurality of pixels in the display panel, each comprising a first sub-pixel, a second sub-pixel and a third sub-pixel, wherein a shape of each of the first, second and third sub-pixels is defined by sides that are at a non-zero angle to the Y-axis or parallel to the X-axis, the first and second sub-pixels are substantially symmetrical to each other with respect to the X-axis, and the third sub-pixel is larger in size than the first and second sub-pixels.

First claim

What is claimed is:

1. An organic light emitting diode display comprising:
a display panel having a display area that is defined with X and Y axes intersecting each other; and
a plurality of pixels in the display panel, each comprising a first sub-pixel, a second sub-pixel and a third sub-pixel,
wherein a shape of each of the first, second and third sub-pixels is defined by sides that are at a non-zero angle to the Y-axis or parallel to the X-axis, the first and second sub-pixels are substantially symmetrical to each other with respect to the X-axis, and the third sub-pixel is larger in size than the first and second sub-pixels,
wherein the first sub-pixel has:
a first side parallel to the X-axis;
a second side bent and extended from one end of the first side; and
a third side bent and extended from another end of the first side and connected to the second side, and
wherein the third sub-pixel has:
a fourth side parallel to one of the second and third sides adjacent thereto;
a fifth side bent and extended from one end of the fourth side and substantially symmetrical to the fourth side with respect to the X-axis;
a sixth side bent and extended from another end of the fourth side and parallel to the fifth side; and
a seventh side connected to one end of the fifth side and one end of the sixth side and parallel to the fourth side;
wherein one end of the fifth side is opposite to another end of fifth side that is connected to one end of fourth side, and
wherein one end of the sixth side is opposite to another end of sixth side that is connected to another end of fourth side.

2. The organic light emitting diode display of claim 1 , wherein an angle between the first side and the second side and an angle between the first side and the third side are equal.

3. The organic light emitting diode display of claim 1 , wherein an acute angle between the fourth side and the X-axis ranges from 40° to 50°.

4. The organic light emitting diode display of claim 1 , wherein one or more corners of one or more of the first, second and third sub-pixels is chamfered.

5. The organic light emitting diode display of claim 1 , wherein each pixel comprises red, green, and blue sub-pixels, and the third sub-pixel is a blue sub-pixel.

6. The organic light emitting diode display of claim 1 , further comprising a spacer disposed in an area between at least two of the first, second and third sub-pixels,
wherein a shape of the spacer is defined by sides that are at an angle to the Y-axis or parallel to the X-axis.

7. An organic light emitting diode display comprising:
a plurality of scan lines arranged along an X-axis;
a plurality of data lines arranged along a Y-axis crossing the X-axis;
first, second, and third regions arranged in a matrix defined by crossings of the scan lines and the data lines;
thin film transistors arranged in the first, second and third regions;
first electrodes connected to the thin film transistors via pixel contact holes; and
banks on the first electrodes to define first, second, and third sub-pixels,
wherein a shape of each of the first, second, and third sub-pixels is defined by sides that are at a non-zero angle to the Y-axis or parallel to the X-axis, the first and second sub-pixels are substantially symmetrical to each other with respect to the X-axis, and the third sub-pixel is larger in size than the first and second sub-pixels,
wherein the first sub-pixel has:
a first side parallel to the X-axis;
a second side bent and extended from one end of the first side; and
a third side bent and extended from another end of the first side and connected to the second side, and
wherein the third sub-pixel has:
a fourth side parallel to one of the second and third sides adjacent thereto;
a fifth side bent and extended from one end of the fourth side and substantially symmetrical to the fourth side with respect to the X-axis;
a sixth side bent and extended from another end of the fourth side and parallel to the fifth side; and
a seventh side connected to one end of the fifth side and one end of the sixth side and parallel to the fourth side;
wherein one end of the fifth side is opposite to another end of fifth side that is connected to one end of fourth side, and
wherein one end of the sixth side is opposite to another end of sixth side that is connected to another end of fourth side.

8. The organic light emitting diode display of claim 7 , wherein the first sub-pixel and the second sub-pixel are arranged at least in the first region and the second region, and the third sub-pixel is arranged at least in the second region and the third region.

9. The organic light emitting diode display of claim 7 , wherein the pixel contact holes are provided in the first, second, and third regions, respectively.

10. The organic light emitting diode display of claim 7 , wherein the first sub-pixel comprises a first color organic light emitting material, the second sub-pixel comprises a second color organic light emitting material, and the third sub-pixel comprises a third color organic light emitting material,
wherein the first color is either red, green, or blue, the second color is either red, green, or blue, but except the first color, and the third color is either red, green, or blue, but except the first and second colors.

11. The organic light emitting diode display of claim 10 , wherein the pixels comprise first and second pixels neighboring each other along either the X-axis or the Y-axis,
wherein the first sub-pixel of the first pixel and the first sub-pixel of the second pixel each comprises an organic light emitting material of a different color.

12. The organic light emitting diode display of claim 10 , wherein the pixels comprise first and second pixels neighboring each other along either the X-axis or the Y-axis,
wherein the second sub-pixel of the first pixel and the second sub-pixel of the second pixel each comprises an organic light emitting material of a different color.

13. The organic light emitting diode display of claim 10 , wherein the pixels comprise first and second pixels neighboring each other along either the X-axis or the Y-axis,
wherein the third sub-pixel of the first pixel and the third sub-pixel of the second pixel each comprises an organic light emitting material of a different color.

14. The organic light emitting diode display of claim 7 , wherein one or more corners of one or more of the first, second, and third sub-pixels are chamfered.

15. The organic light emitting diode display of claim 7 , wherein each pixel comprises red, green, and blue sub-pixels, and the third sub-pixel is a blue sub-pixel.

16. The organic light emitting diode display of claim 7 , further comprising a spacer disposed between at least two of the sub-pixels.

17. The organic light emitting diode display of claim 7 , wherein the first, second, and third sub-pixels are arranged in a delta structure.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Hyerin
• Lee Hoyoung
• YANG Jihyeon
• Lee Seunghyun

Classifications

• H01L27/3216

  Electricity · mapped topic

• H01L27/3218 Primary

  Electricity · mapped topic

• H10K59/123

  Connection of the pixel electrodes to the thin film transistors [TFT] · CPC title

• H10K59/352 Primary

  the areas of the RGB subpixels being different · CPC title

• H10K59/353 Primary

  characterised by the geometrical arrangement of the RGB subpixels · CPC title