Control circuit for charging and discharging, illuminating...

Details Control circuit for charging and discharging, illuminating... Control circuit for charging and discharging, illuminating...

2005-01-25

2005-01-25

Tso, Edward H. (Department: 2838)

Electricity: battery or capacitor charging or discharging

Capacitor charging or discharging

Reexamination Certificate

active

06847193

ABSTRACT:
It is an object of the present invention to provide a control circuit for charging and discharging (43) etc., which can prevent an undesirable-emission caused by a residual charge, capable of obtaining a high-quality display and so on. The control circuit for charging and discharging (43) includes a driven element (E1,1-E256,64) with a driving-on status and a driving-off status; a charging element, whose one end is grounded; and a driving circuit (44), which is connected to the driven element (E1,1-E256,64), for controlling the driving-on status or the driving-off status in the driven element. The control circuit further includes a charging path, which is connected to the driven element (E1,1-E256,64), for charging the charging element with a residual charge, which is produced in the driven element (E1,1-E256,64) and/or a line connected to the driven element (E1,1-E256,64) during the driving-on status, and a discharging path, which is connected to the charging path, for discharging the residual charge from the charging element to a ground in the driving-on status.

REFERENCES:
patent: 5844368 (1998-12-01), Okuda et al.
patent: 6339415 (2002-01-01), Ishizuka
patent: 20020093469 (2002-07-01), Suzuki et al.
patent: 20040066357 (2004-04-01), Kawasaki
patent: 20040164301 (2004-08-01), Suzuki et al.
patent: 9-232074 (1997-09-01), None
patent: 11-161219 (1999-06-01), None
patent: 2001-109433 (2001-04-01), None

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