ORGANIC LIGHT EMITTING DISPLAY HAVING DC-DC CONVERTER
First Claim
1. An organic light emitting display having a power supplier, a DC-DC converter, a scan driver, a data driver, and an organic light emitting display panel, wherein the DC-DC converter comprises:
- a boost converter comprising a first switch electrically coupled to the power supplier and a second switch electrically coupled to the power supplier, the first switch, and the organic light emitting display panel;
an inverter comprising a third switch electrically coupled to the power supplier and a fourth switch electrically coupled to the third switch and the organic light emitting display panel; and
a switching controller electrically coupled to the boost converter and the inverter.
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Accused Products
Abstract
An organic light emitting display having a DC-DC converter with freewheel diodes replaced by switches integrated into a switching controller. This way, power consumption is reduced by truly shutting down a current path when the DC-DC converter does not operate, and the size and weight of the DC-DC converter may be reduced. One embodiment of the DC-DC converter has a boost converter with a first switch coupled to a power supplier and a second switch, functioning as a freewheel diode, coupled to an organic light emitting display panel, and an inverter with a third switch coupled to the power supplier and a fourth switch, functioning as a freewheel diode, coupled to the organic light emitting display panel. A switching controller is coupled to the boost converter and the inverter. The second and fourth switches, which function as the freewheel diodes, are integrated into the switching controller.
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Citations
23 Claims
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1. An organic light emitting display having a power supplier, a DC-DC converter, a scan driver, a data driver, and an organic light emitting display panel, wherein the DC-DC converter comprises:
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a boost converter comprising a first switch electrically coupled to the power supplier and a second switch electrically coupled to the power supplier, the first switch, and the organic light emitting display panel; an inverter comprising a third switch electrically coupled to the power supplier and a fourth switch electrically coupled to the third switch and the organic light emitting display panel; and a switching controller electrically coupled to the boost converter and the inverter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification