Electric power conversion systems – Current conversion – Integrated circuit
Reexamination Certificate
2008-01-08
2008-01-08
Nguyen, Matthew V. (Department: 2838)
Electric power conversion systems
Current conversion
Integrated circuit
C327S534000, C345S087000
Reexamination Certificate
active
11797793
ABSTRACT:
There is to be provided a liquid crystal drive controller with a built-in power supply circuit wherein latch-up is made difficult to arise even if one amplitude level of the segment line drive voltage is set to the ground potential and the levels of other liquid crystal drive voltages are determined accordingly. A semiconductor integrated circuit with a built-in power supply circuit, wherein a negative voltage generated in a power supply circuit is applied to a substrate or a well region as a bias voltage, is provided with a switch for temporarily applying the ground potential to the substrate or well region to be biased with the negative voltage at the time of starting up the power supply circuit.
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Endo Kazuya
Miyamoto Naoki
Mizuno Toshio
Nakaji Takayuki
Ookado Kazuo
Mattingly, Stanger Malur & Brundidge PC
Nguyen Matthew V.
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