Patent ID: 9209218
Filing Date: 2015-12-08
Classification: H01L

Abstract:
1. An infrared solid-state imaging device provided with a plurality of unit detecting sections in a matrix form, each unit detecting section comprising: an infrared light guiding layer; a first reflecting layer provided on the infrared light guiding layer; an infrared light detecting section provided on the first reflecting layer, the infrared light detecting section comprising an infrared light absorbing layer for absorbing infrared light, an upper contact layer provided on the infrared light absorbing layer, and a lower contact layer provided under the infrared light absorbing layer; and first metal wiring electrically connected to the upper contact layer, wherein a side wall of each unit detecting section is inclined at a taper angle smaller than 45° with respect to a normal direction of a bottom surface of the infrared light guiding layer, to form a groove between the unit detecting sections adjacent to each other, a first insulating layer is provided on the side wall of the unit detecting section and second metal wiring is provided on the first insulating layer, and a refractive index of the first reflecting layer is lower than a refractive index of the lower contact layer.