Power generator having a power selector and organic light emitting display device using the same
First Claim
Patent Images
1. A power generator, comprising:
- a booster that receives an input power supplied from a power supply unit, generates a first power using the input power, and supplies the first power to an output terminal;
a power selector that receives the input power and the first power, and selects one of the input power and the first power at the output terminal to supply selectively the input power and the first power as a reference power;
a reference voltage generator that receives only one of the input power and the first power as the reference power from the power selector, and generates a reference voltage using the reference power;
a comparator that compares a feedback voltage supplied from the booster and the reference voltage with each other; and
a controller that controls the booster to output a chosen voltage from the output terminal according to a comparison result of the comparator.
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Abstract
A power generator includes a booster that boosts an input voltage supplied from a power supply unit and that supplies a boosted input voltage to an output terminal, a selector that selects one of the input voltage and a voltage at the output terminal as a selected voltage and supplies the selected voltage as an output voltage, a reference voltage generator that generates a reference voltage based on the output voltage, a comparator that compares a feedback voltage supplied from the booster and the reference voltage with each other, and a controller that controls the booster to output a chosen voltage from the output terminal according to a comparison result of the comparator.
1071 Citations
18 Claims
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1. A power generator, comprising:
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a booster that receives an input power supplied from a power supply unit, generates a first power using the input power, and supplies the first power to an output terminal; a power selector that receives the input power and the first power, and selects one of the input power and the first power at the output terminal to supply selectively the input power and the first power as a reference power; a reference voltage generator that receives only one of the input power and the first power as the reference power from the power selector, and generates a reference voltage using the reference power; a comparator that compares a feedback voltage supplied from the booster and the reference voltage with each other; and a controller that controls the booster to output a chosen voltage from the output terminal according to a comparison result of the comparator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An organic light emitting display device, comprising:
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pixels positioned at intersection portions between scan lines and data lines, the pixels controlling an amount of current flowing from a first power supply to a second power supply via an organic light emitting diode; a power supply unit that supplies an input power; and a power generator that boosts the input power to generate a first power, the power generator including; a booster that receives the input power, generates the first power using the input power, and supplies the first power to an output terminal; a power selector that receives the input power and the first power, and selects one of the input power and the first power at the output terminal to supply selectively the input power and the first power as a reference power; a reference voltage generator that receives only one of the input power and the first power as the reference power from the power the power selector, and generates a reference voltage using the reference power; a comparator that compares a feedback voltage supplied from the booster and the reference voltage with each other; and a controller that controls the booster to output a chosen voltage from the output terminal according to a comparison result of the comparator. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification