Patent ID: 8537099
Filing Date: 2013-09-17
Classification: G09G

Abstract:
1. An IC voltage supply for LCD, the voltage supply comprises: a DC voltage regulator coupled between a positive voltage and a negative voltage, the DC regulator receiving a reference voltage and a feedback voltage and providing an output voltage; a resistor network that includes a plurality of parallel branches, each branch having at least one resistor and one node, coupled to the output voltage of the DC voltage regulator; an LCD module coupled to each of the nodes of each parallel branch; and a plurality of diodes each comprising an anode and each disposed between the node of each branch and a common feedback diode, the common feedback diode comprising an anode coupled to the anodes of the plurality of diodes and the common feedback diode coupled to provide the feedback voltage, wherein the DC voltage regulator keeps the feedback voltage from each LCD module not lower than the reference voltage independently of each module's consumption of current.