Patent ID: 8597968
Filing Date: 2013-12-03
Classification: H01L

Abstract:
1. An active device array substrate, comprising: a substrate having a display area and a photo sensing area; a first patterned conductor layer disposed on the display area of the substrate; a gate insulator disposed on the substrate to cover the first patterned conductor layer; a patterned semiconductor layer disposed on the gate insulator; a second patterned conductor layer comprising a source electrode, a drain electrode and a lower electrode, wherein the source electrode and the drain electrode are disposed in the display area and cover a part of the patterned semiconductor layer, and the lower electrode is disposed on the gate insulator in the photo sensing area of the substrate; a patterned photosensitive silicon rich dielectric layer comprising an interface protection layer and a photo-sensing layer, wherein the interface protection layer is disposed on the source electrode and the drain electrode, and the photo-sensing layer is disposed on the lower electrode; a passivation layer disposed on the substrate to cover the patterned photosensitive silicon rich dielectric layer and the gate insulator, wherein the passivation layer and patterned photosensitive silicon rich dielectric layer have a first contact window to expose one of the source electrode and the drain electrode, and the passivation layer has a second contact window to expose a portion of the photo-sensing layer; and a third patterned conductor layer comprising a pixel electrode and an upper electrode, wherein the pixel electrode is electrically connected to one of the source electrode and the drain electrode through the first contact window, and the upper electrode covers the photo-sensing layer through the second contact window, wherein the photo-sensing layer is sandwiched between the lower electrode and the upper electrode.