OLED DEVICE WITH MIXED EMISSIVE LAYER

摘要

One embodiment of this invention pertains to an organic light emitting diode ("OLED") device (205) that includes a substrate (208), an anode (211) on the substrate (208), a hole transport layer (214) on the anode (211), an emissive polymer layer (217) on the hole transport layer (214), and a cathode (223) on the emissive polymer layer (217). The emissive polymer layer (217) is comprised of a blend of organic emissive polymers and a hole transport material. The hole transport material can be either polymers or small molecules.