Method and Apparatus for Using Thin-Film Transistors and MIS Capacitors as Light-Sensing Elements in Charge Mapping Arrays

A device, comprising:

• a charge map array including a plurality of pixels, each pixel including a switching element and a light sensing element structured to absorb light;
• a gate driver board coupled to the charge map array and structured to apply a bias stress to the plurality of pixels in the charge map array;
• and
• a data sense board coupled to the charge map array and structured to determine a value shift in first and second portions of the plurality of pixels responsive to a transmission of light toward the plurality of pixels in the charge map array, the data sense board including a comparator to compare the value shift in the first portion of the plurality of pixels to the value shift in the second portion of the plurality of pixels.

A system, comprising:

• a charge map array including a plurality of pixels, each pixel including a switching element and a light sensing element structured to absorb light, each light sensing element having a light absorption range corresponding to one of (a) red color detection, (b) blue color detection, and (c) green color detection;
• a gate driver board coupled to the charge map array and structured to apply a bias stress to the plurality of pixels in the charge map array;
• a data sense board coupled to the charge map array and structured to determine a value shift in first and second portions of the plurality of pixels responsive to a transmission of light toward the plurality of pixels in the charge map array, the data sense board including a comparator to compare the value shift in the first portion of the plurality of pixels to the value shift in the second portion of the plurality of pixels;
• and
• a display device structured to display an image based on pixel information received from the data sense board, wherein the data sense board is structured to transmit the pixel information to the display device, the pixel information including the value shift in the first and second portions of the plurality of pixels.