OLED display architecture

摘要

A device that may be used as a multi-color pixel is provided. The device has a first organic light emitting device, a second organic light emitting device, a third organic light emitting device, and a fourth organic light emitting device. The device may be a pixel of a display having four sub-pixels. The first device may emit red light, the second device may emit green light, the third device may emit light blue light and the fourth device may emit deep blue light.

主权项

1. A device, comprising:
a first sub-pixel comprising a first organic light emitting device that emits light having a peak wavelength in the visible spectrum of 600-700 nm, further comprising a first emissive layer having a first emissive material, wherein the first emissive material is phosphorescent; a second sub-pixel comprising a second organic light emitting device that emits light having a peak wavelength in the visible spectrum of 500-600 nm, further comprising a second emissive layer having a second emissive material, wherein the second emissive material is phosphorescent; a third sub-pixel comprising a third organic light emitting device that emits light having a peak wavelength in the visible spectrum of 400-500 nm and a CIE y-coordinate less than 0.25, further comprising a third emissive layer having a third emissive material, wherein the third emissive material is phosphorescent; and a fourth sub-pixel comprising a fourth organic light emitting device that emits light having a peak wavelength in the visible spectrum of 400 to 500 nm, further comprising a fourth emissive layer having a fourth emissive material, the fourth emissive material being different than the third emissive material; wherein the fourth emissive material is fluorescent; wherein the peak wavelength in the visible spectrum of light emitted by the fourth organic light emitting device is at least 4 nm less than the peak wavelength in the visible spectrum of light emitted by the third organic light emitting device; and wherein the device has only four different types of sub-pixels.