Patent ID: 8575713
Filing Date: 2013-11-05
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate; and an optical sensor unit formed on said substrate for sensing light and generating a sensing signal, said optical sensor unit including a first thin film diode for sensing light of a first wavelength range, and a second thin film diode for sensing light of a second wavelength range including a wavelength longer than the maximum wavelength of said first wavelength range, wherein said first thin film diode and said second thin film diode are connected in parallel, wherein said sensing signal is generated based on output of one of said first thin film diode and said second thin film diode, wherein said first thin film diode has a first semiconductor layer; said second thin film diode has a second semiconductor layer; and the bandgap of said first semiconductor layer is greater than the bandgap of said second semiconductor layer, and wherein the crystalline state of said first semiconductor layer differs from the crystalline state of said second semiconductor layer.