Photosensitive system, display device and method for determining positions of human eyes

The invention relates to the technical field of display, and discloses a light sensing system for determining the position of human eyes, a display device and a method, the light sensing system comprises a light sensing array device, an amplification circuit, an analog-to-digital conversion circuit and a coordinate determination circuit which are connected in sequence and arranged in an array, and the light sensing array device comprises a plurality of light sensing triodes; each photosensitive triode is configured to be used for converting an optical signal of a collected human eye image into a current signal, the amplification circuit is configured to perform differential amplification on each current signal to obtain a plurality of voltage difference signals, and the amplification circuit is a single-sampling amplification circuit or a double-sampling amplification circuit. The analog-to-digital conversion circuit is configured to convert each voltage difference signal into a digital signal, and the coordinate determination circuit is configured to determine the digital signal with the minimum numerical value based on each digital signal and further determine the position of the human eyes according to the digital signal with the minimum numerical value, so that the position of the human eyes in the 3D display image can be rapidly and accurately determined.