Patent ID: 8188666
Filing Date: 2012-05-29
Classification: G09G,H05B,Y02B

Abstract:
1. A control circuit for adjusting a backlight color, comprising: an input device receiving a plurality of external messages to generate a corresponding plurality of control signals; a control unit having a plurality of pins, implementing a plurality of calculations based on the plurality of control signals, and simultaneously generating a plurality of light-adjusting signals, each of which has a respective pulse width; a backlight having a plurality of light sources for a color mixing; a plurality of pulse-width modulation (PWM) units, each of which is correspondingly coupled to each of the pins and to each of the light sources, and adjusts a light of the each light source based on the respective pulse width; and a display device, wherein the control unit generates a plurality of display signals, and the display device displays the light of the each light source based on the display signals.