Integrated charge pump DC/DC conversion circuits using thin film transistors
AssigneeToppoly Optoelectronics Corp.
InventorChing-Wei Lin
Life of this patent
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Abstract
A DC/DC conversion circuit for a display panel. The DC/DC conversion circuit converts an input voltage into a boosted voltage, in which first and second charge pump circuits are coupled to first and second clock signals respectively and output a boosted voltage to a load alternately. Under the control of the first and second clock signals, the first charge pump circuit outputs a first signal to disable the output of the second charge pump circuit or the second charge pump circuit output a second signal to disable the output of the first charge pump circuit.
Claims23
A DC/DC conversion circuit, for converting an input voltage to an output voltage, comprising:
- a first charge pump circuit, converting the input voltage to a first boosted output voltage;
- and
- a second charge pump circuit, converting the input voltage to a second boosted output voltage,
- wherein the first boosted output voltage is coupled to the second charge pump circuit to control operation of the second charge pump circuit, and the second boosted output voltage is coupled to the first charge pump circuit to control operation of the first charge pump circuit.
A DC/DC conversion circuit, for converting an input voltage to an output voltage, comprising:
- a first charge pump circuit, converting the input voltage to a first boosted voltage and producing a first signal;
- and
- a second charge pump circuit, converting the input voltage to a second boosted voltage and producing a second signal, wherein the first signal is operatively coupled to the second charge pump circuit and the second signal is operatively coupled to the first charge pump circuit;
- wherein the first boosted output voltage is coupled to the second charge pump circuit to control operation of the second charge pump circuit, and the second boosted output voltage is coupled to the first charge pump circuit to control operation of the first charge pump circuit.
Dependencies are inferred from the claim text.