Patent ID: 8115417

Claim:
A color management system for light emitting diode (LED) backlights, connected with an LED array, comprising: a collection device adapted to collect optical signals of the LED array, transform the optical signals into electric signals and send the electric signals; a control device connected with the collection device, and adapted to process the electric signals to get coordinate values of white points in a color coordinate, compare the coordinate values of the white points with calibration values of the coordinate values of the white points and output brightness control signals according to comparison results, wherein the control device comprises: a control module connected with the collection device and the driver device, and adapted to process the electric signals received to get the coordinate values of the white points in the color coordinate, compare the coordinate values of the white points with the calibration values of the coordinate values of the white points, compute the comparison results and output the brightness control signals according to computing results; and a micro control unit connected with the control module, and adapted to control work status of the control module, control communication between the control module and the driver device, and control communication between the control module and the collection device; and a driver device connected with the control device and adapted to output brightness adjustment currents for adjusting brightness of the LED array according to the brightness control signals.