Patent ID: 8531099
Filing Date: 2013-09-10
Classification: G09G,H01L

Abstract:
1. An organic light emitting diode (OLED) display comprising: a substrate; an organic light emitting element including a first electrode, an organic emission layer, and a second electrode on the substrate; a driving thin film transistor that turns on/off first power supplied to the first electrode, and including a first active layer including zinc oxide (ZnO); a photo sensor disposed between the substrate and the organic emission layer, and including a second active layer that senses light emitted from the organic emission layer, the photo sensor including a sensor input end and a sensor output end contacting respective ends of the second active layer, a sensing thin film transistor connected with the sensor input end of the photo sensor; and a controller controlling at least one of the first power and a second power supplied to the second electrode according to an intensity of light sensed by the photo sensor.