Patent ID: 9368543
Filing Date: 2016-06-14
CPC Classification: H01L

Claim Text:
1. An image sensor device, comprising: a silicon-based substrate having a top surface and a bottom surface opposite to the top surface of the silicon-based substrate; a silicon-germanium epitaxy layer on the silicon-based substrate and connected to the top surface of the silicon-based substrate, the silicon-germanium epitaxy layer having a top surface and a bottom surface opposite to the top surface of the silicon-germanium epitaxy layer, wherein the silicon-germanium epitaxy layer is formed from Si an isolation feature disposed in the silicon-germanium epitaxy layer and between a pixel region and a periphery region of the silicon-germanium epitaxy layer, wherein the isolation feature extends from the silicon-based substrate to the top surface of the silicon-germanium epitaxy layer; an active pixel cell disposed in the pixel region of the silicon-germanium epitaxy layer; and a logic circuit disposed in the periphery region of the silicon-germanium epitaxy layer.