High resolution low power consumption OLED display with extended lifetime
Full-color pixel arrangements for use in devices such as OLED displays are provided, in which multiple sub-pixels are configured to emit different colors of light, with each sub-pixel having a different optical path length than some or all of the other sub-pixels within the pixel.
1. A full-color pixel arrangement for an OLED device, the full-color pixel arrangement comprising:
a first sub-pixel comprising a first emissive region of a first color and having a first optical path length;
a second sub-pixel comprising a second emissive region of the first color, the second sub-pixel having a second optical path length different than the first optical path length; and
a third sub-pixel comprising a third emissive region of a second color;
wherein the full-color pixel arrangement comprises emissive regions of exactly two different colors;
wherein the second emissive region provides emission for the second sub-pixel without any intervening color altering layers, and
wherein the first sub-pixel comprises a first non-emissive layer having a first thickness and the second sub-pixel comprises a second non-emissive layer of the same type as the first non-emissive layer and having a second thickness different from the first thickness.
2. The full-color pixel arrangement of claim 1 , wherein the first and second non-emissive layers are electron transport layers (ETLs), hole blocking layers (HBLs), or capping layers (CPLs).
3. The full-color pixel arrangement of claim 1 , wherein the first and second non-emissive layers are hole transport layers (HTLs), electron blocking layers (EBLs), or hole injection layers (HILs).
4. The full-color pixel arrangement of claim 1 , wherein the first sub-pixel comprises a third non-emissive layer having a third thickness and the second sub-pixel comprises a fourth non-emissive layer of the same type as the third non-emissive layer and having a fourth thickness different from the third thickness.
5. The full-color pixel arrangement of claim 4 , wherein the third and fourth non-emissive layers are electron transport layers (ETLs), hole blocking layers (HBLs), or capping layers (CPLs).
6. The full-color pixel arrangement of claim 4 , wherein the third and fourth non-emissive layers are hole transport layers (HTLs), electron blocking layers (EBLs), or hole injection layers (HILs).
7. An OLED device comprising the full-color pixel arrangement of claim 1 .
8. The OLED device of claim 7 , wherein the OLED device is a display having a resolution of at least 250 dpi, 300 dpi, 400 dpi, 500 dpi, or 600 dpi.
9. The OLED device of claim 7 , wherein the OLED device is a display having a resolution of at least 700 dpi.
10. The OLED device of claim 7 , wherein the device is a type selected from the group consisting of: 1 wearable device, a flat panel display, a computer monitor, a medical monitor, a television, a billboard, a light for interior or exterior illumination, a signal, a color tunable or color temperature tunable lighting source, a heads-up display, a fully transparent display, a flexible display, a 3D display, a laser printer, a telephone, a cell phone, a personal digital assistant (PDA), a laptop computer, a digital camera, a camcorder, a viewfinder, a micro-display, a vehicle, a large area wall, a theater or stadium screen, and a sign.