Pixel arrangement structure for organic light emitting display device

1. A pixel arrangement structure of an organic light emitting diode (OLED) display, comprising:

a plurality of pixels for displaying an image on the OLED display and comprising:

a first pixel having a center coinciding with a center of a virtual square;

a second pixel separated from the first pixel and having a center at a first vertex of the virtual square;

another first pixel on a line defined by the center of the virtual square and the first vertex, the first pixel, the second pixel, and the other first pixel being consecutive pixels on the line from among the plurality of pixels; and

a third pixel separated from the first pixel and the second pixel, and having a center at a second vertex neighboring the first vertex of the virtual square,

wherein the second pixel has a larger area than that of the third pixel, and

wherein the first pixel is configured to emit green light.

2. The pixel arrangement structure of claim 1 ,

wherein the plurality of pixels further comprises another second pixel separated from the first pixel and having a center at a third vertex neighboring the second vertex of the virtual square, and

wherein the second pixels are separated from each other by the first pixel.

3. The pixel arrangement structure of claim 2 ,

wherein the plurality of pixels further comprises another third pixel separated from the first pixel and having a center at a fourth vertex neighboring the third vertex of the virtual square, and

wherein the third pixels are separated from each other by the first pixel.

4. The pixel arrangement structure of claim 3 , wherein the second pixels and the third pixels enclose the first pixel in the virtual square.

5. The pixel arrangement structure of claim 4 , wherein

the first pixel, the second pixels, and the third pixels have polygonal shapes, and

each of the second pixels and each of the third pixels has a larger area than the first pixel.

6. The pixel arrangement structure of claim 5 , wherein

the first pixel has a quadrilateral shape, and

the second pixels and the third pixels have hexagonal or octagonal shapes.

7. The pixel arrangement structure of claim 6 , wherein the second pixels and the third pixels have octagonal shapes.

8. The pixel arrangement structure of claim 7 , wherein a shortest distance between the first pixel and corresponding ones of the second pixels, a shortest distance between the first pixel and corresponding ones of the third pixels, and a shortest distance between each of the second pixels and corresponding ones of the third pixels are a same first length.

9. The pixel arrangement structure of claim 8 , wherein

the first pixel comprises a plurality of first pixels,

the plurality of first pixels have a same quadrilateral shape, and

a shortest distance between neighboring pixels of the plurality of first pixels is a second length that is longer than the first length.

10. The pixel arrangement structure of claim 6 , wherein

each of the second pixels has a larger area than each of the third pixels,

a shortest distance between each of the second pixels and corresponding ones of the third pixels is a same first length, and

a shortest distance between the first pixel and corresponding ones of the second pixels, and a shortest distance between the first pixel and corresponding ones of the third pixels are a same second length.

11. The pixel arrangement structure of claim 10 , wherein

the first pixel comprises a plurality of first pixels,

the plurality of first pixels have a same quadrilateral shape, and

a shortest distance between neighboring pixels of the plurality of first pixels is a third length that is longer than the first length and the second length.

12. The pixel arrangement structure of claim 10 , wherein

the first pixel comprises a plurality of first pixels,

neighboring pixels of the plurality of first pixels have quadrilateral shapes that are symmetrical to each other, and

a shortest distance between the neighboring pixels of the plurality of first pixels is a third length that is longer than the first length and the second length.

13. The pixel arrangement structure of claim 6 , wherein

the first pixel comprises a plurality of first pixels, and

neighboring pixels of the plurality of first pixels have quadrilateral shapes that are symmetrical to each other.

14. The pixel arrangement structure of claim 13 , wherein each of the second pixels has a larger area than each of the third pixels.

15. The pixel arrangement structure of claim 5 , wherein

the first pixel has an octagonal shape, and

the second pixels and the third pixels have quadrilateral shapes.

16. The pixel arrangement structure of claim 15 , wherein

each of the second pixels has a larger area than each of the third pixels,

a shortest distance between each of the second pixels and each of the third pixels is a same first length, and

a shortest distance between the first pixel and each of the second pixels, and a shortest distance between the first pixel and each of the third pixels are a same second length.

17. The pixel arrangement structure of claim 16 , wherein

the first pixel comprises a plurality of first pixels, and

neighboring pixels of the plurality of first pixels have octagonal shapes that are symmetrical to each other.

18. The pixel arrangement structure of claim 17 , wherein a shortest distance between the neighboring pixels of the plurality of first pixels is a third length that is longer than the first length and the second length.

19. The pixel arrangement structure of claim 1 , wherein the first pixel, the second pixel, and the third pixel are configured to emit different color lights.

20. The pixel arrangement structure of claim 19 , wherein the second pixel and the third pixel are configured to emit blue light and red light, respectively.

21. The pixel arrangement structure of claim 1 , wherein the second pixel has a larger area than that of the first pixel.