On -vehicle LCD information screen of adaptive is shaded

The utility model relates to an on -vehicle LCD information screen of adaptive is shaded, its characterized in that still includes ARM the control unit, and ARM the control unit's control signal inputand the signal output part of the ware of calling out the stops link to each other, ARM the control unit's drive end via display driver circuit connection LCD information screen body, still includinglocating the photosensitive sensor in the carriage, photosensitive sensor connects ARM the control unit's collection signal input part to on -vehicle LCD information screen, and ARM the control unit's PWM control output links to each other with switching power supply module in a poor light, and the switching power supply module's that is shaded voltage output in a poor light end links to each other with the LED backlight. The utility model discloses can slow down the optical attenuation of LED backlight, prolong on -vehicle LCD information screen's life, the demonstration luminance that makesthe screen accords with am