Patent ID: 7507998

Claim:
A system for displaying images, comprising: an active matrix organic electroluminescent device, comprising: a substrate; a plurality of scan lines and data lines disposed on the substrate, for defining a plurality of pixel regions, wherein each pixel structure comprises: a switching thin film transistor, comprising a first channel layer, first source/drain regions disposed at both sides of the first channel layer, a first gate electrode disposed above the first channel layer, and a first conductive layer disposed under the first channel layer; a driving thin film transistor, comprising a second channel layer, second source/drain regions disposed at both sides of the second channel layer, a second gate electrode disposed under the second channel layer, and a second conductive layer disposed above the second channel layer; a storage capacitor, comprising two first electrodes, and a second electrode disposed between the first electrodes, wherein the first conductive layer, the second gate electrode and the lower first electrode are of the same material and formed by the same process; and a pixel electrode electrically connected to the second source/drain regions of the driving thin film transistor via a first contact; and wherein, the second electrode electrically connects to the second source/drain regions of the driving thin film transistor via a second contact, and the two first electrodes electrically connect to the first source/drain regions of switching thin film transistor via a third contact.