An OLED display is disclosed, which includes a substrate and a plurality of pixel groups arranged on the substrate. Each pixel group includes a first, a second, a third and a fourth sub-pixel. Arrangements of the first, second, third and fourth sub-pixels in two neighboring pixel groups are symmetrical with each other. In addition, the distance between the third sub-pixels and the distance between the fourth sub-pixels in two neighboring pixel group are greater than the distance between the first sub-pixels in the two neighboring pixel group.
1. An OLED display, comprising:
a substrate;
a plurality of pixel groups, arranged in a number of directions on the substrate, wherein each of the plurality of pixel groups comprises:
two first sub-pixels;
a second sub-pixel; and
a third sub-pixel;
wherein the first, second and third sub-pixels in a first pixel group and a second pixel group of the plurality of pixel groups are symmetrical with each other with respect to a first reference line, and
wherein a first distance between the two adjacent first sub-pixels in the first and the second pixel groups is different from a second distance between the second sub-pixels in the first and the second pixel groups;
wherein a second reference line is defined to be orthogonal with the first reference line and between the second sub-pixel and the third sub-pixel in the first pixel group, and no sub-pixel is disposed between the second sub-pixel and the third sub-pixel in the first pixel group;
wherein a third distance between the second sub-pixel in the first pixel group and the second reference line is greater than a fourth distance between one of the first sub-pixels in the first pixel group and the second reference line.
2. The OLED display as claimed in claim 1 , wherein the first pixel group is adjacent to the second pixel group.
3. The OLED display as claimed in claim 1 , wherein along the first reference line, colors of the first and the second pixel groups are symmetrical with each other.
4. The OLED display as claimed in claim 1 , wherein the first distance is between a first boundary of the first sub-pixel in the first pixel group and a second boundary of the first sub-pixel in the second pixel group, and the second distance is between a third boundary of the second sub-pixel in the first pixel group and a fourth boundary of the second sub-pixel in the second pixel group.
5. The OLED display as claimed in claim 4 , wherein the third distance is between the third boundary and the second reference line, a fourth distance is between the first boundary and the second reference line.
6. The OLED display as claimed in claim 5 , wherein regions inside the first, second, third and fourth boundaries are capable of emitting light.
7. The OLED display as claimed in claim 1 , wherein the second reference line is separated from the two first pixels in the first pixel group by a distance.
8. The OLED display as claimed in claim 1 , wherein a fifth distance between the third sub-pixels in the first and the second pixel groups is the same as the second distance.
9. The OLED display as claimed in claim 1 , wherein a sixth distance between the third sub-pixel in the first pixel group and the second reference line is greater than the fourth distance.