Electric power conversion systems – Current conversion – With voltage multiplication means
Reexamination Certificate
2007-02-27
2007-02-27
Sterrett, Jeffrey (Department: 2838)
Electric power conversion systems
Current conversion
With voltage multiplication means
Reexamination Certificate
active
10971068
ABSTRACT:
In order to restrict variations of an output voltage of a DC—DC conversion circuit using TFTs, in a boost-type, a second n-ch TFT N2and a second p-ch TFT P2are newly provided. With regard to the second n-ch TFT N2, a gate thereof is connected to a second capacitor C2, a source thereof is connected to a first reference voltage source YVDD, and a drain thereof is connected to a first capacitor C1. With regard to the second p-ch TFT P2, a gate thereof is connected to the second capacitor C2, a source thereof is connected to a third capacitor C3, and a drain thereof is connected to the first capacitor C1. Thus, a voltage at the first capacitor C1stops being influenced by the variations of a threshold voltage between a source and drain of a first diode D1.
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Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sterrett Jeffrey
Toshiba Matsushita Display Technology Co., Ltd.
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