Patent ID: 9419036
Filing Date: 2016-08-16
CPC Classification: H01L

Claim Text:
1. A solid-state imaging device comprising: a plurality of light-receiving elements each of which photoelectrically converts incident light; and a plurality of dispersive elements disposed on a light-incident side of the light-receiving elements, wherein each of the dispersive elements includes: a first light transmissive film material; and a second light transmissive film material with a property of having a refractive index that is lower than a refractive index of the first light transmissive film material in a first wavelength range of the incident light and higher than the refractive index of the first light transmissive film material in a second wavelength range of the incident light, the second wavelength range being longer in wavelength than the first wavelength range, a volume occupation ratio of the first light transmissive film material in the each of the dispersive elements increases from one end of the each of the dispersive elements towards an other end of the each of the dispersive elements in a direction parallel to a light-receiving surface of the light-receiving elements, while a volume occupation ratio of the second light transmissive film material in the each of the dispersive elements increases from the other end towards the one end in the direction, the other end being opposite the one end, each of the dispersive elements includes first plural portions each comprising the first light transmissive film material and second plural portions each comprising the second light transmissive film material, the first plural portions and the second plural portions are disposed alternately in a direction parallel to the light-receiving surface, and each of the first plural portions and the second plural portions has a width shorter than a wavelength of the incident light.