Patent ID: 6830951
Filing Date: 2004-12-14
Classification: H01L

Abstract:
A process for manufacturing a light sensor device by a standard Complementary Metal Oxide Semiconductor (CMOS) process, comprising:implanting active areas on a semiconductor substrate to obtain at least a first, a second, and a third integrated region of corresponding photosensors; forming a stack of layers having different thickness and refractive index over said photosensors to provide an interferential for said photosensors; said stack of layers having different thickness and refractive index is obtained by a deposition of a first oxide stack including at least a first, a second and a third oxide layer over at least one photosensor, said third oxide layer being obtained by a deposition step of a protecting premetal dielectric layer/and said stack of layers has a thickness value of a multiple of L/2, wherein L is a given wavelength of the incident light that is wanted to be transmitted to the sensor.