Arrangements of color pixels for full color OLED

• US 20080001525A1
• Filed: 06/30/2006
• Published: 01/03/2008
• Est. Priority Date: 06/30/2006
• Status: Abandoned Application

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Chao, Ching-Ian, Wu, Yuan-Chun
• Application Number:
  US11/478,921
• Publication Number:
  US 20080001525A1
• Time in Patent Office: Days
• US Class Current: 313/500
• CPC Class Codes: H10K 59/352 the areas of the RGB subpixels being different
• CPC Class Codes: H10K 59/353 characterised by the geometrical arrangement of the RGB subpixels

Abstract

A color display panel formed with a plurality of pixels in a matrix with a row direction and a column direction, wherein each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel adjacently aligned along the row direction of the pixel matrix, and a red light emission zone, a green light emission zone and a blue light emission zone. In one embodiment, the color display panel comprises an arrangement of the red, green and blue light emission zones of a pixel in a triangle with the geometrical center of each emission zone located at a respective vertex of the triangle such that one side of the triangle is substantially parallel to one of the row direction and the column direction, thereby in the plurality of pixels, any two adjacent light emission zones of different colors in the row direction define a gap having a distance, and any two adjacent light emission zones of different colors in the column direction define a gap having a distance that is substantially or nearly the same as the distance of the gap defined between two adjacent light emission zones of different colors in the row direction.

Claims

1. A display panel capable of displaying a color image, comprising a plurality of pixels formed in a matrix with a row direction and a column direction, each pixel comprising:

a. a first sub-pixel, a second sub-pixel and a third sub-pixel adjacently aligned along the row direction of the matrix; and

b. a first light emission zone, a second light emission zone and a third light emission zone arranged in a triangle with the geometrical center of each emission zone located at a respective vertex of the triangle such that one side of the triangle is substantially parallel to one of the row direction and the column direction, wherein each of the first light emission zone, the second light emission zone and the third light emission is capable of emitting light in a unique color,

wherein as arranged in the plurality of pixels, any two adjacent light emission zones of different colors in the row direction define a gap having a distance, and any two adjacent light emission zones of different colors in the column direction define a gap having a distance that is substantially or nearly the same as the distance of the gap defined between two adjacent light emission zones of different colors in the row direction.

2. The display panel of claim 1, wherein each of the first light emission zone, the second light emission zone and the third light emission zone comprises a corresponding one of a red light emission zone, a green light emission zone and a blue light emission zone.

3. The display panel of claim 2, wherein the geometrical center of each of the red, green and blue light emission zones is located in a corresponding sub-pixel of the first, second and third sub-pixels, and of the pixel, respectively, such that the one side of the triangle is substantially parallel to the row direction.

4. The display panel of claim 2, wherein the geometrical center of one of the red, green and blue light emission zones is located in one of the first and third sub-pixels of the pixel, and the geometrical centers of the rest of the red, green and blue light emission zones are located in the other of the first and third sub-pixels of the pixel, respectively, such that the one side of the triangle is substantially parallel to the column direction.

5. The display panel of claim 2, wherein each of the red, green and blue light emission zones has a width in the row direction and a length in the column direction.

6. The display panel of claim 5, wherein the width and the length of each of the red, green and blue light emission zones are different or substantially identical.

7. The display panel of claim 2, wherein each of the red, green and blue light emission zones comprises a light emitting diode device capable of emitting light in a respective color of red, blue and green colors.

8. The display panel of claim 7, wherein the light emitting diode device comprises an organic light emitting diode (OLED) device or a plurality of OLED devices connected in series.

9. The display panel of claim 8, wherein each OLED device comprises one of a top-emission OLED device and a bottom-emission OLED device.

10. The display panel of claim 8, wherein each OLED device has one of a normal structure and an inverted structure.

11. The display panel of claim 8, further comprising a driving circuit to individually drive the red, green and blue light emission zones of each of the plurality of pixels to emit light of corresponding colors therefrom.

12. The display panel of claim 11, wherein the driving circuit is formed such that the display panel corresponds to one of a passive matrix OLED device and an active matrix OLED device.

13. A display panel capable of displaying a color image, formed with a plurality of pixels in a matrix with a row direction and a column direction, wherein each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel adjacently aligned along the row direction of the matrix, and a red light emission zone, a green light emission zone and a blue light emission zone, comprising:

an arrangement of the red, green and blue light emission zones of a pixel in a triangle with the geometrical center of each emission zone located at a respective vertex of the triangle such that one side of the triangle is substantially parallel to one of the row direction and the column direction, thereby in the plurality of pixels, any two adjacent light emission zones of different colors in the row direction define a gap having a distance, and any two adjacent light emission zones of different colors in the column direction define a gap having a distance that is substantially or nearly the same as the distance of the gap defined between two adjacent light emission zones of different colors in the row direction.

14. The display panel of claim 13, wherein the geometrical center of each of the red, green and blue light emission zones is located in a corresponding sub-pixel of the first, second and third sub-pixels, and of the pixel, respectively, such that the one side of the triangle is substantially parallel to the row direction.

15. The display panel of claim 13, wherein the geometrical center of one of the red, green and blue light emission zones is located in one of the first and third sub-pixels of the pixel, and the geometrical centers of the rest of the red, green and blue light emission zones are located in the other of the first and third sub-pixels of the pixel, respectively, such that the one side of the triangle is substantially parallel to the column direction.

16. The display panel of claim 13, wherein each of the red, green and blue light emission zones has a width in the row direction and a length in the column direction.

17. The display panel of claim 16, wherein the width and the length of each of the red, green and blue light emission zones are different or substantially identical.

18. The display panel of claim 13, wherein each of the red, green and blue light emission zones comprises a light emitting diode device capable of emitting light in a respective color of red, blue and green colors.

19. The display panel of claim 18, wherein the light emitting diode device comprises an organic light emitting diode (OLED) device or a plurality of OLED devices connected in series.

20. The display panel of claim 19, wherein each OLED device comprises one of a top-emission OLED device and a bottom-emission OLED device.

21. The display panel of claim 19, wherein each OLED device has one of a normal structure and an inverted structure.

22. A method for forming a display panel for displaying a color image, wherein the display panel has a plurality of pixels in a matrix with a row direction and a column direction, and wherein each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel adjacently aligned along the row direction of the matrix, and a red light emission zone, a green light emission zone and a blue light emission zone, comprising the step of:

arranging the red, green and blue light emission zones of a pixel in a triangle with the geometrical center of each light emission zone located at a respective vertex of the triangle such that one side of the triangle is substantially parallel to one of the row direction and the column direction, thereby in the matrix of the plurality of pixels, any two adjacent light emission zones of different colors in the row direction define a gap having a distance, and any two adjacent light emission zones of different colors in the column direction define a gap having a distance that is substantially or nearly the same as the distance of the gap defined between two adjacent light emission zones of different colors in the row direction.

23. The method of claim 22, wherein the geometrical center of each of the red, green and blue light emission zones is located in a corresponding sub-pixel of the first, second and third sub-pixels, and of the pixel, respectively, such that the one side of the triangle is substantially parallel to the row direction.

24. The method of claim 22, wherein the geometrical center of one of the red, green and blue light emission zones is located in one of the first and third sub-pixels of the pixel, and the geometrical centers of the rest of the red, green and blue light emission zones are located in the other of the first and third sub-pixels of the pixel, respectively, such that the one side of the triangle is substantially parallel to the column direction.

25. The method of claim 22, wherein each of the red, green and blue light emission zones comprises a light emitting diode device capable of emitting light in a respective color of red, blue and green colors.

26. The method of claim 25, wherein the light emitting diode device comprises an organic light emitting diode (OLED) device or a plurality of OLED devices connected in series.

27. A display panel capable of displaying a color image, comprising a plurality of pixels formed in a matrix with a row direction and a column direction, each pixel comprising:

a. a first sub-pixel, a second sub-pixel and a third sub-pixel; and

b. a first light emission zone, a second light emission zone and a third light emission zone arranged in a triangle with the geometrical center of each emission zone located at a respective vertex of the triangle such that one side of the triangle is substantially parallel to one of the row direction and the column direction, wherein each of the first light emission zone, the second light emission zone and the third light emission is capable of emitting light in a unique color,

wherein as arranged in the plurality of pixels, any two adjacent light emission zones of different colors in the row direction define a gap having a distance, and any two adjacent light emission zones of different colors in the column direction define a gap having a distance that is substantially or nearly the same as the distance of the gap defined between two adjacent light emission zones of different colors in the row direction.

28. The display panel of claim 27, wherein each of the first light emission zone, the second light emission zone and the third light emission zone comprises a corresponding one of a red light emission zone, a green light emission zone and a blue light emission zone.

29. A three-color pixel element for a display, comprising:

a. a first sub-pixel, a second sub-pixel and a third sub-pixel adjacently aligned in a pixel of a matrix with a row direction and a column direction;

b. a first light emission zone, a second light emission zone and a third light emission zone arranged in a triangle with the geometrical center of each emission zone located at a respective vertex of the triangle such that one side of the triangle is substantially parallel to one of the row direction and a column direction perpendicular to the row direction, wherein each of the first light emission zone, the second light emission zone and the third light emission is capable of emitting light in a unique color,

wherein any two adjacent light emission zones of different colors in the row direction define a gap having a first distance, and any two adjacent light emission zones of different colors in the column direction define a gap having a second distance, and wherein the first distance and the second distance are substantially or nearly same.

30. A full color display made from the three-color pixel element of claim 29.