Automatic adjusting circuit for brightness of display screen and electronic equipment

The invention belongs to the technical field of electronics, and provides a display screen brightness automatic adjusting circuit, which is suitable for electronic equipment with a display screen and comprises a brightness acquisition circuit, a main control module and a display screen backlight driving circuit, the brightness acquisition circuit acquires an optical signal representing ambient brightness when the electronic equipment is used and converts the optical signal into a brightness characterization electric signal, the main control module is electrically connected with the brightness acquisition circuit and is used for receiving the brightness characterization electric signal and calculating and processing the brightness characterization electric signal to output an adjusting signal, and the display screen backlight driving circuit is electrically connected with the main control module and is used for driving the electronic equipment to display screen backlight. And the control module is used for rec