Patent ID: 6953978
Filing Date: 2005-10-11
Classification: G06K,H01L

Abstract:
1. A thin film transistor type optical sensor, comprising: a light source for radiating light in accordance with a predetermined signal; a window for transmitting the light radiated by the light source; a thin film phototransistor for generating an optical current in accordance with an intensity of received light; a storage capacitor for storing charge information produced by the optical current generated by the thin film phototransistor; a switching thin film transistor for outputting the information stored in the storage capacitor in accordance with an external control signal; an insulating layer for covering the window, the thin film phototransistor, the storage capacitor, and the switching thin film transistor; a protecting layer formed on the insulating layer; and a living object detection pattern formed on the protecting layer for supplying an electrical power supply signal to the light source when a living object contracts the living object detection pattern.