Patent ID: 8643587
Filing Date: 2014-02-04
Classification: G09G,H05B,Y02B

Abstract:
1. A field sequential color (FSC) mode liquid crystal display (LCD), comprising: a controller configured to operate in response to an external adjustment; a direct-current-to-direct-current (DC/DC) converter configured to convert a battery voltage into a driving voltage under control of the controller; a color light emitting diode (LED) backlight including first, second, and third color LED arrays connected in parallel and configured to be operated by the driving voltage outputted from the DC/DC converter; an FSC generator configured to generate first, second, and third color PWM signals as field sequential signals according to an internal sawtooth voltage and a dimming voltage; and a 3-channel current source configured to generate first, second, and third driving currents flowing through the first, second, and third color LED arrays of the color LED backlight, respectively, the 3-channel current source comprising respective on/off switching paths for the first, second, and third driving currents respectively controlled according to the first, second, and third color PWM signals generated from the FSC generator to adjust luminances of the first, second, and third color LED arrays of the color LED backlight, wherein the FSC generator comprises: the FSC logic unit comprises: