Patent ID: 7884370
Filing Date: 2011-02-08
Classification: H01L

Abstract:
1. An organic light emitting diode display comprising: a substrate; a gate line disposed on the substrate; a data line disposed on the substrate substantially perpendicular to the gate line; a driving voltage line disposed substantially parallel to one of the gate line and the data line; a switching thin film transistor connected to the gate line and the data line; a driving thin film transistor connected to the switching thin film transistor and the driving voltage line; and a light emitting diode connected to the driving thin film transistor; wherein the driving thin film transistor comprises: a first semiconductor including a crystalline semiconductor; a driving input electrode disposed on the first semiconductor and connected to the driving voltage line; a driving output electrode disposed on the first semiconductor and connected to the light emitting diode; and a driving control electrode disposed on the driving input electrode and the driving output electrode and connected to the switching output electrode, wherein the switching thin film transistor comprises an amorphous silicon semiconductor and a second semiconductor disposed below the amorphous silicon semiconductor.