NANOSTRUCTURES FOR COLOR-BY-WHITE OLED DEVICES

摘要

The present disclosure describes nano-structured light extraction color filter laminates, and articles and methods of using nanostructured light extraction color filter laminates for the fabrication of an OLED including a nanostructure, using lamination techniques. Nanostructured OLED devices can exhibit enhanced light extraction efficiency. The methods involve transfer and/or replication of a film, layer, or coating in order to form a nanostructured surface that is in optical contact with the emitting surface of an OLED in, for example, a top emitting or a bottom emitting active matrix OLED (TE-AMOLED or BE-AMOLED) device. The articles having enhanced light extraction efficiency can be of particular use in color-by-white (CBW) OLED displays, which use white-light spectrum OLEDs with a color filter array.

主权项

1. A color-by-white (CBW) organic light emitting diode (OLED) image display, comprising:
an organic light emitting diode (OLED) substrate with a top surface and capable of emitting a white color spectrum of light through the top surface; a color filter substrate comprising:
a support substrate;a nanostructured transfer layer index-matched to the support substrate having a planar surface in contact with the support substrate and a nanostructured opposing surface;a high refractive index transfer layer planarization layer conforming to and planarizing the nanostructured surface of the transfer layer and having a planar opposing surface;a high refractive index color filter layer in contact with the planar surface of the high refractive index transfer layer planarization layer; anda high refractive index color filter planarization layer in contact with the high refractive index color filter layer; and an optical coupling layer (OCL) in contact with the OLED top surface and having a planar opposing surface in contact with the high refractive index color filter planarization layer.