Patent ID: 6617608
Filing Date: 2003-09-09
Classification: H01L

Abstract:
An electro-luminescent display comprising a substrate including a plurality of pixels, each of said pixels including:a switching TFT having a gate electrode connected to a gate line and a source electrode connected to a data line; a driving TFT having a gate electrode connected to a drain of the switching TFT, a source electrode connected to a power line, and a drain electrode connected to an electro-luminescent diode; a capacitor connected between said gate electrode and said source electrode of the driving TFT; an active layer of the driving TFT including a source region on a first side end of the active layer, a drain region on a second end of the active layer, and a channel region at an approximate middle portion of the active layer and in between the drain region and the source region; a gate insulating layer on the channel region and said gate electrode on the gate insulating layer such that the gate insulating layer is disposed between the gate electrode and the active layer; an insulating layer on the substrate including the gate electrode, wherein the insulating interlayer does not substantially cover the source and drain regions so that substantial portions of the source and drain regions are exposed and said source electrode and said drain electrode are in contact electrically with the exposed portions of the source and drain regions, respectively; a passivation layer on the insulating interlayer and arranged to cover the source electrode and the drain electrode; a connect hole in the passivation layer and arranged to expose the drain electrode; an anode electrode on the passivation layer and arranged to electrically contact the drain electrode through the hole; an organic electro-luminescent layer of said electro-luminescent diode on portions of the passivation layer and covering the anode electrode; and a cathode electrode on the organic electro-luminescent layer.