Dynamic voltage supply for lcd timing controller

An IC multiple voltage supply system for LCD, comprising:

• a timing controller controlling image data scanning timing on LCD;
• a digital-to-analog converter (DAC) outputting a plurality of reference voltages;
• a plurality of IC voltage supplies, each IC voltage supply including:
• 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;
• a plurality of diodes each disposed between the node of each branch and a common feedback diode, the common feedback diode coupled to provide the reference voltage;
• and
• 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.

A method of managing a voltage supply for an LCD display, comprising:

• providing a DC voltage regulator;
• supplying a reference voltage input signal to the first input terminal of the DC voltage regulator;
• connecting a plurality of LCD modules in parallel on the output of the DC voltage regulator;
• and
• connecting a plurality of diodes each between at least one LCD module and the second input terminal of the DC voltage regulator, wherein the diodes provide a feedback voltage input for the DC voltage regulator.

A method of managing a multiple voltage supply for an LCD display, comprising:

• providing a timing controller and outputting to a digital-analog-converter (DAC);
• generating a plurality of reference voltage signals from the DAC;
• providing a plurality of DC voltage regulators, each DC voltage regulator comprising;
• applying one of the plurality of reference voltage signals to a first input terminal of the DC voltage regulator;
• connecting a plurality of LCD modules in parallel to the output of the DC voltage regulator;
• and
• connecting a plurality of diodes each between at least one LCD module and a second input terminal of the DC voltage regulator, wherein the diodes provide a feedback voltage input for the DC voltage regulator.