High resolution low power consumption OLED display with extended lifetime
Arrangements of pixel components that allow for full-color devices, while using emissive devices that use blue color altering layers in conjunction with blue emissive regions, that emit at not more than two colors, and/or that use limited number of color altering layers, are provided. Devices disclosed herein also may be achieved using simplified fabrication techniques compared to conventional side-by-side arrangements, because fewer masking steps may be required.
1. A full-color pixel arrangement for an OLED device comprising:
at least four sub-pixels comprising;
a first sub-pixel comprising a first emissive region configured to emit blue light, the first emissive region comprising an emissive material that emits light having a peak wavelength in the range of about 400-500 nm, wherein the first emissive region does not include any color altering layers;
a first color altering layer disposed in a stack with the first sub-pixel; and
a second emissive region configured to emit yellow light or green light;
wherein the full-color pixel arrangement comprises emissive regions of not more than two colors.
2. The arrangement of claim 1 , wherein the first color altering layer comprises a deep blue color altering layer.
3. The arrangement of claim 1 , wherein the first color altering layer comprises a light blue color altering layer.
4. The arrangement of claim 1 , further comprising a second sub-pixel of the at least four sub-pixels, the second sub-pixel comprising the second emissive region.
5. The arrangement of claim 4 , further comprising a third sub-pixel of the at least four sub-pixels, the third sub-pixel comprising an emissive region configured to emit the same color light as the emissive region of the second sub pixel.
6. The arrangement of claim 5 , further comprising a second color altering layer disposed in a stack with the second sub-pixel.
7. The arrangement of claim 6 , further comprising a fourth sub-pixel of the at least four sub-pixels, the fourth sub-pixel comprising an emissive region configured to emit the same color light as the emissive region of the second subpixel.
8. The arrangement of claim 6 , wherein the emissive region of the second sub-pixel emits yellow light and the second color altering layer comprises a green color altering layer.
9. The arrangement of claim 6 , wherein the emissive region of the second sub-pixel emits green light and the second color altering layer comprises a red color altering layer.
10. The arrangement of claim 6 , further comprising a third color altering layer disposed in a stack with the third sub-pixel.
11. The arrangement of claim 10 , wherein the emissive region of the second sub-pixel emits yellow light, the second color altering layer comprises a green color altering layer, and the third color altering layer comprises a red color altering layer.
12. The arrangement a claim 10 , wherein the emissive region of the second sub-pixel emits green light, the second color altering layer comprises a green color altering layer, and the third color altering layer comprises a red color altering layer.