Patent ID: 8058657
Filing Date: 2011-11-15
Classification: H01L,Y02E

Abstract:
1. A display device, comprising: a first transistor region and a second transistor region defined on a substrate; a first transistor disposed on the first transistor region, the first transistor comprises a first semiconductor layer having source, channel, and drain regions defined on the substrate, a first insulating film disposed on the first semiconductor layer, a first transparent electrode disposed on the first insulating film and formed corresponding to the channel region of the first semiconductor layer, and a second insulating film disposed on the first transparent electrode; a second transistor disposed on the second transistor region, the second transistor comprises a second semiconductor layer having source, channel, and drain regions defined on the substrate, the first insulating film disposed on the second semiconductor layer, a second transparent electrode disposed on the first insulating film and formed corresponding to the channel region of the second semiconductor layer, a second gate disposed on the second transparent electrode, and a second insulating film disposed on the second gate; and a pixel comprising an organic light emitting diode disposed on the second transistor, wherein the first transistor is a phototransistor for sensing external light and the second transistor is a switching transistor for driving the organic light emitting diode, wherein the first transistor adjust the luminance of the organic light emitting diode by external light.