Patent ID: 6906342
Filing Date: 2005-06-14
Classification: H01L

Abstract:
1. An optical detecting sensor, comprising: a sensor thin film transistor (TFT) generating optical current, the sensor TFT having source and drain electrodes; a storage capacitor storing charges of the optical current generated in the sensor thin film transistor; and a switching TFT controlling a release of the stored charges, the switching TFT having a gate electrode, an insulating layer on the gate electrode, an active layer on the insulating layer, an ohmic contact layer on the active layer, and dual layered source and drain electrodes that are each comprised of a transparent conductive material and a metal material, at least one layer of the dual layered drain electrode of the switching TFT connected to the source electrode of the sensor TFT, wherein both of the transparent conductive material and the metal material of the dual layered source and drain electrodes contact the ohmic contact layer.