Patent ID: 9508681
Filing Date: 2016-11-29
CPC Classification: G01S,G06T,H01L,H04N

Claim Text:
1. An apparatus, comprising: a first semiconductor chip having a first pixel array, said first pixel array having visible light sensitive pixels; and, a second semiconductor chip having a second pixel array, said first semiconductor chip stacked on said second semiconductor chip such that said second pixel array resides beneath said first pixel array, said second pixel array having IR light sensitive pixels for time-of-flight based depth detection, wherein, an IR sensitive pixel resides directly beneath one or more of the visible light sensitive pixels such that incident IR light received by the IR sensitive pixel passes through the one or more visible light pixels, and wherein, a light guide structure resides directly beneath the one or more visible light pixels and between the one or more visible light pixels and the IR sensitive pixel, the light guide structure to receive the IR light that has passed through the one or more visible light pixels and direct the IR light to the IR sensitive pixel so that the IR sensitive pixel can respond to the IR light.