Patent ID: 9691803
Date: 2017-06-27
CPC Classifications: H01L

Claim:
1. A semiconductor wafer comprising: a semiconductor substrate; a dielectric multilayer film formed above the semiconductor substrate and serving as an optical filter of a light receiving sensor; and a light detection region formed in the semiconductor substrate, wherein the Poisson ratio VS of the semiconductor substrate, Young's modulus ES of the semiconductor substrate, the radius r of the semiconductor substrate, the thickness b of the semiconductor substrate, stress σ in the dielectric multilayer film, and the thickness d of the dielectric multilayer film satisfy a relationship expressed by the following Expression (1): wherein the dielectric multilayer film comprises a first group of refractive index layers and a second group of refractive index layers with the first group of refractive index layers attenuating a first frequency band and the second group of refractive index layers attenuating a second frequency band, wherein a third frequency band between the first frequency band and the second frequency band is a pass band of the optical filter; and wherein the first group of refractive index layers and the second group of refractive index layers are each comprised of 20 to 40 layers.