Power circuit of displaying device

A power circuit of a displaying device, comprising:

• a timing controller, outputting a timing control signal, and said timing of said timing control signal related to a plurality of scan driving signals of said displaying device;
• a control circuit, receiving said timing control signal from said timing controller, said control circuit:
• generating a first clock signal and a second clock signal according to said timing control signal, wherein said first and said second clock signals are different from each other;
• and
• further generating a capacitance adjusting signal according to said timing control signal;
• said
• capacitance adjusting signal controlling the capacitance of a charge pump by connecting or disconnecting a plurality of charging capacitors selectively interconnected inside said charge pump;
• said charge pump being selectively altered in capacitance value responsive to said capacitance adjusting signal, said charge pump including a plurality of consecutive charging stages respectively interconnected by a plurality of interconnection switches, each of said consecutive charging stages including one of said charging capacitors and at least one other of said charging capacitors selectively interconnected in parallel thereto by a capacitance switch;
• said charge pump receiving an input voltage, producing an output voltage according to said capacitance adjusting signal, said consecutive charging stages being alternately coupled to one of said first and second clock signals and interconnected by respective ones of said interconnection switches each controlled by one of said first and second clock signals;
• wherein adjacent interconnection switches are controlled by different ones of said first and second clock signals, and said charging capacitors of adjacent consecutive charging stages are connected with different ones of said first and second clock signals;
• wherein each of said consecutive charging stages further includes said capacitance switch located in between said one of said charging capacitors and said at least one other of said charging capacitors with one of said first and second clock signals coupled between said capacitance switch and said one of said charging capacitors, and said capacitance switch is controlled by said capacitance adjusting signal.