Patent ID: 9236518
Filing Date: 2016-01-12
CPC Classification: H01L

Claim Text:
1. A sensor, comprising: a base substrate, a group of gate lines and a group of data lines arranged as crossing each other, and a plurality of sensing elements arranged in an array and defined by the group of gate lines and the group of data lines, each sensing element comprising a TFT device and a photodiode sensing device, wherein: the TFT device comprises: a gate electrode disposed on the base substrate and connected with a gate line; a gate insulating layer disposed on the gate electrode and overlaying the base substrate; a source electrode and a drain electrode disposed on the gate insulating layer and opposed to each other to form a groove, wherein the drain electrode is connected with a data line; an ohmic layer disposed on the source electrode and the drain electrode; and an active layer disposed on the ohmic layer and in the groove; the photodiode sensing device comprises: a receiving electrode disposed on the gate insulating layer and connected with the source electrode; a photodiode disposed on the receiving electrode; a transparent electrode disposed on the photodiode; and a bias line disposed over the transparent electrode and connected with the transparent electrode, wherein the photodiode is a PIN photodiode comprising: an N-type semiconductor, a first part of an I-type semiconductor, a second part of the I-type semiconductor and a P-type semiconductor, the N-type semiconductor is positioned on the receiving electrode and is in the same pattern layer as the ohmic layer, and the first part of the I-type semiconductor is positioned on the N-type semiconductor and is in the same pattern layer as the active layer.