Patent ID: 8384072

Claim:
An organic light emitting diode (OLED) display comprising: a substrate main body; a plurality of pixels formed above the substrate main body, each pixel comprising an organic light emitting diode (OLED) and emitting light of at least one color among red, green and blue; and an encapsulation substrate coupled to the substrate main body in a sealed manner to cover the OLED, wherein the OLED comprises: a first electrode injecting holes, a second electrode injecting electrons, an emissive layer formed between the first and second electrodes, and a hole injection layer and a hole transport layer sequentially formed between the first electrode and the emissive layer, wherein the OLEDs in the red and green pixels further comprise a semi-transparent layer formed between the first electrode and the emissive layer wherein the semi-transparent layer is formed in at least one of the hole injection layer, the hole transport layer, between the hole injection layer and the hole transport layer, and between the hole transport layer and the emissive layer.