Patent ID: 7687779
Filing Date: 2010-03-30
Classification: G01T,H01L

Abstract:
1. An electro-medical imaging apparatus, comprising: a signal generating unit where electron-hole pairs are formed by absorbing an optical energy irradiated from outside; a power source contacting a surface of the signal generating unit and applying an electric signal so as to separate the electron-hole pairs to be accumulated each in opposite sides of the signal generating unit according to their polarities; a signal storage unit connected to the signal generating unit and receiving and storing one of the separated charges; and a signal converter connected to the signal storage unit and applying a control signal to the signal storage unit to convert an electric signal, generated by the charges stored in the signal storage unit, into an image signal, wherein the signal storage unit comprises: a blocking layer allowing the inflow of only one kind of charge separated in the signal generating unit; a second electrode electrically contacting the blocking layer; a device layer electrically contacting the second electrode and comprising a plurality of unit cells, each of which consists of a capacitor and a transistor connected to the capacitor, wherein the capacitor stores one kind of charge that flows through the blocking layer; and a substrate where the blocking layer, the second electrode, and the device layer are formed, wherein the transistor disposed in the device layer comprises an active CIS layer formed with In2Se3 and Cu,Se3.