Organic light emitting diode display and method for manufacturing the same

• US 8,330,352 B2
• Filed: 10/13/2008
• Issued: 12/11/2012
• Est. Priority Date: 11/13/2007
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Sung, Un-Cheol, Choi, Beohm-Rock, Rhee, Jung-Soo, Song, Young-Rok, Choi, Ji-Hye
• Primary Examiner(s): Patel, Nimeshkumar
• Assistant Examiner(s): Hollweg, Thomas A
• Application Number:
  US12/250,225
• Publication Number:
  US 20090121983A1
• Time in Patent Office: 1,520 Days
• Field of Search: 313/504, 313/506
• US Class Current: 313/504
• 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 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• 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
• CPC Class Codes: H10K 71/166 using selective deposition, e.g. using a mask

Abstract

An organic light emitting device according to an exemplary embodiment of the present invention includes a plurality of first, second, and third pixels for displaying different colors, wherein the plurality of first and second pixels are alternately arranged in a first column, the plurality of third pixels are continuously arranged in a second column, and an interval between the third pixels is larger than an interval between the first pixel and the second pixel.

Claims

1. An organic light emitting device, comprising:

a plurality of first pixels comprising a first pixel electrode and an emission layer disposed on the first pixel electrode, the first pixels to display a first color;

a plurality of second pixels comprising a second pixel electrode and an emission layer disposed on the second pixel electrode, the second pixels to display a second color; and

a plurality of third pixels comprising a third pixel electrode and an emission layer disposed on the third pixel electrode, the third pixels to display a third color,

wherein the first pixels and the second pixels are arranged in a first column, the third pixels are arranged in a second column, and the emission layer of the third pixels overlaps at least two third pixel electrodes,

wherein an interval between neighboring third pixels in the second column is larger than an interval between neighboring first and second pixels in the first column, and

wherein an area of the third pixel is larger than an area of each of the first pixel and the second pixel.

2. The organic light emitting device of claim 1, wherein an interval between neighboring first and the second pixels is substantially the same as an interval between neighboring first and third pixels, and an interval between neighboring second and third pixels.

3. The organic light emitting device of claim 2, wherein one first pixel and one second pixel are alternately arranged in the first column.

4. The organic light emitting device of claim 2, wherein two first pixels and two second pixels are alternately arranged in the first column.

5. The organic light emitting device of claim 4, wherein

the emission layer of the first pixels overlaps at least two first pixel electrodes neighboring each other.

6. The organic light emitting device of claim 5, wherein

the emission layer of the second pixels overlaps at least two second pixel electrodes neighboring each other.

7. The organic light emitting device of claim 2, wherein

the first color is red, the second color is green, and the third color is blue.

8. An organic light emitting device, comprising:

a plurality of first pixels comprising an emission layer to display a first color;

a plurality of second pixels comprising an emission layer to display a second color; and

a plurality of third pixels comprising an emission layer to display a third color,

wherein the first pixels and the second pixels are arranged in a first column, the third pixels are arranged in a second column, and the emission layers of at least two third pixels are connected to each other,

wherein an interval between neighboring third pixels in the second column is larger than an interval between neighboring first and second pixels in the first column, and

wherein an area of the third pixel is larger than an area of each of the first pixel and the second pixel.

9. The organic light emitting device of claim 8, wherein

the first color is red, the second color is green, and the third color is blue.

10. The organic light emitting device of claim 9, wherein

the emission layers of at least two first pixels are connected to each other.

11. The organic light emitting device of claim 10, wherein

the emission layers of at least two second pixels are connected to each other.

12. The organic light emitting device of claim 9, wherein

an interval between neighboring first and the second pixels is substantially the same as an interval between neighboring first and third pixels, and an interval between neighboring second and third pixels.

13. An organic light emitting device, comprising:

a plurality of red pixel groups, each red pixel group being arranged in a 2×

2 matrix of four red pixels sharing one red emission layer;

a plurality of green pixel groups, each green pixel group being arranged in a 2×

2 matrix of four green pixels sharing one green emission layer; and

a plurality of blue pixel groups, each blue pixel group being arranged in a 2×

2 matrix of four blue pixels sharing one blue emission layer,

wherein the red pixel groups and the green pixel groups are alternately arranged in a first column, the blue pixel groups are continuously arranged in a second column, and the first column and the second column are alternately arranged.

14. The organic light emitting device of claim 13, wherein

an arrangement of the red pixel groups and the green pixel groups of the first column disposed on a first side of the second column is the same as an arrangement of the red pixel groups and the green pixel groups of the first column disposed on a second side of the second column.

15. The organic light emitting device of claim 13, wherein

a red pixel group is a top-most pixel group of the alternately arranged red pixel groups and green pixel groups of the first column that is disposed on a first side of the second column, and a green pixel group is the top-most pixel group of the alternately arranged red pixel groups and green pixel groups of the first column that is disposed on a second side of the second column.

16. An organic light emitting device, comprising

a plurality of first pixels, a plurality of second pixels, and a plurality of third pixels to display different colors,

wherein the first pixels and the second pixels are arranged in a first column,

the third pixels are arranged in a second column,

an interval between neighboring third pixels is larger than an interval between neighboring first and second pixels, and an area of the third pixel is larger than an area of each of the first pixel and the second pixel.

17. The organic light emitting device of claim 16, wherein

the first pixels and the third pixels, or the second pixels and the third pixels, are alternately arranged in a row.

18. The organic light emitting device of claim 17, wherein

neither the first pixels, the second pixels, nor the third pixels include portions that are continuously arranged according to a row or column.

19. The organic light emitting device of claim 18, wherein

the interval between neighboring first and second pixels is substantially the same as an interval between neighboring first and third pixels, or an interval between neighboring second and third pixels.

20. The organic light emitting device of claim 16, wherein

the first pixels display red, the second pixels display green, and the third pixels display blue.