Patent ID: 8884241

Claim:
A capacitive sensor device comprising: a substrate including a first sensor region and a second sensor region, the first sensor region and the second sensor region are of a material conducive to electron-hole pair generation when being struck by radiation having a parameter value in a range of radiation parameter values, wherein when the first sensor region is struck by radiation having a parameter value in the range of radiation parameter values during operation, a first inversion layer in the first sensor region acting as a first electrode for a first capacitor is modified by the radiation, wherein when the second sensor region is struck by radiation having a parameter value in the range of radiation parameter values during operation, a second inversion layer in the second sensor region acting as a first electrode for a second capacitor is modified by the radiation; a separation region in the substrate located between the first sensor region and the second sensor region, the separation region inhibiting the flow of carriers between the first sensor region and the second sensor region; a top plate structure located over the substrate, wherein the top plate structure includes a blocking structure that is opaque to radiation having a parameter value in the range, the top plate structure includes an electrically conductive structure and a dielectric layer located between the electrically conductive structure and the substrate, wherein the top plate structure is located over a first portion of the first sensor region and a first portion of the second sensor region, wherein the electrically conductive structure is located over a portion of both the first sensor region and the second sensor region, the electrically conductive structure includes one or more contiguous electrically conductive layers wherein the one or more contiguous electrically conductive layers serves as a second electrode for both the first capacitor and the second capacitor; wherein the blocking structure is positioned with respect to the first sensor region and the second sensor region to selectively and differentially block radiation having a parameter value in the range from the first sensor region and the second sensor region so as to differentially impact electron-hole pair generation of the first sensor region with respect to electron-hole pair generation in the second sensor region at selected angles of incidence of the radiation.