Patent ID: 6657175
Filing Date: 2003-12-02
Classification: H01L

Abstract:
A thin film transistor-type optical detecting sensor, comprising:an array substrate provided with a plurality of regions, each region including a plurality of sensor thin film transistors each generating an optical current in response to light reflected from a subject for detection, a plurality of storage capacitors each connected with a corresponding one of the plurality of sensor thin film transistors for storing charge representative of the optical current, a plurality of switch thin film transistors each connected with a corresponding one of the plurality of storage capacitors for selectively outputting the stored charge, and a plurality of output lines each connected with a corresponding one of the plurality of switch thin film transistors; a backlight unit disposed beneath the array substrate to provide the light to a single one of the plurality of regions such that the light is withheld from other ones of the plurality of regions; and a drive IC including a plurality of sub-circuits, wherein an nth sub-circuit is connected with an nth output line of each region of the array substrate.