Terminal device with ambient light detection function and ambient light detection method

An ambient light detection method, applied to a terminal device that comprises cover glass, a display screen, an ambient light sensor assembly, and a middle frame and that has an ambient light detection function, wherein the ambient light sensor comprises at least two photosensitive units, the display screen comprises an active area AA and a non-AA, transparent black ink is deployed in a vertical projection area of a photosensitive area of the first photosensitive unit on the cover glass, opaque ink or low light transmittance ink is deployed in a vertical projection area of a photosensitive area of the second photosensitive unit on the cover glass, and the method comprises:

• sensing, by the first photosensitive unit in the at least two photosensitive units, light energy of peripheral ambient light that is of the terminal device and that passes through the transparent black ink and light energy of a light leakage of the display screen to obtain first light energy, wherein the light leakage of the display screen is light leaked from the non-AA by light generated by a light-emitting unit when the AA displays an image;
• sensing, by the second photosensitive unit in the at least two photosensitive units, light energy of peripheral ambient light that is of the terminal device and that passes through the opaque ink or the low light transmittance ink, partial peripheral ambient light energy that passes through the transparent black ink, and the light energy of the light leakage of the display screen to obtain second light energy, wherein the first light energy is greater than the second light energy;
• and
• removing, based on the first light energy and the second light energy by using a differential processing method, the light energy of the light leakage generated by the display screen during content display, to obtain true brightness of the peripheral ambient light to adjust brightness of the display screen.