Light intensity detection circuit, light intensity detector, detection method thereof and display device

A light intensity detection circuit, comprising a first reverser, a second reverser, a third reverser, a photosensor and an energy storage element, wherein

• the first reverser is electrically connected with a signal input terminal, a first voltage terminal, a second voltage terminal and the energy storage element of the light intensity detection circuit and configured to respectively output a voltage of the first voltage terminal or the second voltage terminal to the energy storage element under the control of the signal input terminal of the light intensity detection circuit;
• the second reverser is electrically connected with one end of the photosensor, the energy storage element and a ground terminal;
• the third reverser is electrically connected with the other end of the photosensor, a third voltage terminal and the energy storage element;
• the second reverser and the third reverser are configured to control transmission of photocurrent generated by the photosensor along a first direction or a second direction, in which the first direction is opposite to the second direction;
• and
• the energy storage element is further electrically connected with a signal output terminal of the light intensity detection circuit and configured to control a voltage of the signal output terminal of the light intensity detection circuit through voltage storage or voltage release.