Semiconductor integrated circuit with voltage generation...

Details Semiconductor integrated circuit with voltage generation... Semiconductor integrated circuit with voltage generation...

2005-05-24

2005-05-24

Nguyen, Matthew V. (Department: 2838)

Electric power conversion systems

Current conversion

Integrated circuit

C327S534000

Reexamination Certificate

active

06898096

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.

REFERENCES:
patent: 5313583 (1994-05-01), Yokota et al.
patent: 5680068 (1997-10-01), Ochi et al.
patent: 6456153 (2002-09-01), Buck et al.
patent: 4-371999 (1992-12-01), None
patent: 5-150748 (1993-06-01), None
patent: 7-181913 (1995-07-01), None
patent: 7-199148 (1995-08-01), None
patent: 8-62577 (1996-03-01), None
patent: 11-143432 (1999-05-01), None

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