Patent Document ID: 10115764
Application ID: 13209953
Patent Status: 1

Claim One:
1. A light detection device, comprising: a first array of pixels formed from a first layer of semiconductor material having a bandgap corresponding to a first range of wavelengths, the first array of pixels disposed along a focal plane, each pixel of the first array of pixels configured as a position sensing pixel and to output one or more first signals in proportion to a position of photons incident thereon that are within the first range of wavelengths, the one or more first signals referenced to a ground common; a first contact disposed on at least a portion of each pixel of the first array of pixels; at least one barrier layer disposed on a surface of the first layer of semiconductor material; a second array of pixels monolithically formed on the first array of pixels and formed from a second layer of semiconductor material disposed on a first portion of a surface of the at least one barrier layer, the second layer of semiconductor material having a bandgap corresponding to a second range of wavelengths different from the first range of wavelengths, the second array of pixels disposed along the focal plane, each pixel of the second array of pixels configured as an image sensing pixel and to generate one or more second signals in proportion to a number of photons incident thereon that are within the second range of wavelengths, the one or more second signals referenced to the ground common, wherein the pixels of the second array are sized to be smaller than the pixels of the first array; a second contact disposed on at least a portion of each pixel of the second array of pixels; and a third contact disposed on a second portion of the surface of the at least one barrier layer, wherein the second array of pixels are formed on and disposed outwardly from the first array of pixels such that a plurality of pixels of the second array are associated with and spatially co-registered along the same axis of an optical path of incident photons with each pixel of the first array of pixels, the first and second arrays of pixels arranged along respective planes that are parallel to each other and to the focal plane and that are perpendicular to the optical path, such that the incident photons travel along the optical path from the first array of pixels to the second array of pixels.