Night vision compatible display

1. An organic light emitting diode (OLED) display, comprising:

a screen including a matrix of pixels, each pixel being comprised of a plurality of sub-pixels;

wherein the plurality of sub-pixels, include at least a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a night vision sub-pixel, wherein at least one of the four sub-pixels is inactive at any given time, and wherein the red sub-pixel is inactive in a night mode; and

wherein the night-vision sub-pixel is configured to have no significant emission in the infrared range.

2. The display of claim 1 , wherein the night-vision sub-pixel has a red-orange color.

3. The display of claim 1 , wherein the plurality of sub-pixels are arranged linearly in a 1×4 row, and wherein the arrangement scheme comprises the 1×4 row repeating vertically and horizontally across the screen.

4. The display of claim 1 , wherein the plurality of sub-pixels are arranged in a 2×2 block, and wherein the arrangement scheme comprises the 2×2 block repeating vertically and horizontally across the screen.

5. The display of claim 1 , wherein the display is an Organic Light Emitting Diode (OLED) display.

6. The display of claim 1 , wherein the night vision sub-pixel is inactive in a day mode.

7. A method for converting an OLED display between modes, the method comprising:

detecting a first ambient light level;

entering a first mode, based at least in part on the detected first ambient light level;

detecting a second ambient light level; and

transitioning from the first mode to a second mode based on the detected second ambient light level, wherein transitioning comprises turning off at least a first sub-pixel color and turning on at least a second sub-pixel color.

8. The method of claim 7 , wherein the display further comprises a sensor and wherein detecting comprises detecting with the sensor.

9. The method of claim 8 , wherein detecting comprises receiving a user input instructing the display to detect an ambient light level.

10. The method of claim 7 , wherein detecting comprises receiving a user input indicating an ambient light level as either the first ambient light level or the second ambient light level.

11. The method of claim 7 , wherein the first sub-pixel color and the second sub-pixel color are red and red-orange respectively.

12. The method of claim 7 , wherein the first mode and the second mode are a day mode and a night mode.

13. The method of claim 12 , wherein, during the day mode, a red sub-pixel is active and a night-vision sub-pixel is inactive.

14. The method of claim 12 , wherein, during the night mode, a night vision sub-pixel is active and a red sub-pixel is inactive.

15. An OLED display, the display comprising:

a substrate;

an anode;

a cathode;

at least one organic layer;

at least one conducting layer;

at least one emissive layer; and

four sub-pixel colors, consisting of red, green, blue and red-orange, wherein the green and blue pixels are active in both a day mode and a night mode, and wherein the red pixels are active only in a day mode, and wherein the red-orange pixels are only active in a night mode.

16. The method of claim 15 , wherein the organic layer comprises small molecules.

17. The method of claim 15 , wherein the organic layer comprises a polymer.