Patent ID: 8164252
Filing Date: 2012-04-24
Classification: C08G,H01L

Abstract:
1. An organic light emitting diode (OLED) display apparatus, comprising: a substrate; a first thin film transistor (TFT) on the substrate; an insulating layer covering the first TFT and having a via hole and a groove, the groove extending between the first TFT and a second TFT, the second TFT being adjacent to the first TFT; a first electrode on the insulating layer and electrically connected to the first TFT through the via hole, the first electrode being patterned to cover a top surface of the insulating layer covering the first TFT without extending into the groove; a pixel define layer on the first electrode and the groove, wherein a portion of the pixel define layer completely fills the groove, the pixel define layer having a tapered opening that exposes the first electrode and such that the pixel define layer covers edge portions of the first electrode at the top surface of the insulating layer; an intermediate layer contacting to the first electrode through the tapered opening and covering a portion of the pixel define layer covering the edge portions of the first electrode, the intermediate layer including an organic emissive layer; and a second electrode on the intermediate layer.