Patent ID: 7615731

Claim:
A photo-sensor array including a plurality of pixel sensing circuits, each pixel sensing circuit comprising: a backplane comprising: (i) a substrate; (ii) a gate electrode formed on the substrate and connected with a scan line common to a plurality of the pixel sensing circuits; and (iii) a switching element comprising a first terminal and a second terminal, the switching element communicating with the gate electrode to respond to a scan signal from the scan line by electrically connecting the first terminal to the second terminal to provide a first electric signal to pass between the first terminal and the second terminal; an insulating layer disposed on the backplane; a front plane comprising a plurality of layers deposited sequentially from a first side of the front plane proximate the backplane, the plurality of layers forming: (i) a sensing element comprising one or more of the plurality of layers and including a charge collection electrode, the sensing element disposed over the first terminal of the switching element, the sensing element receiving a stimulus and providing a second electric signal indicating a measure of the received stimulus; and (ii) a data electrode disposed over the second terminal of the switching elements and comprising at least one of the plurality of layers distinct from the one or more of the plurality of layers comprising the sensing elements, the at least one of the plurality of layers comprising the data electrode deposited after deposition of all of the plurality of layers comprising the sensing element, the data electrode connected with a data line common to a plurality of pixel sensing circuits; a first via disposed through the insulating layer and forming an electrical connection between the first terminal of the switching element in the backplane and the charge collection electrode of the sensing element in the front plane; and a second via disposed through the insulating layer and forming an electrical connection between the second terminal of the switching element in the backplane and the data electrode in the front plane.