Capacitive load driving circuit and liquid crystal display

Details Capacitive load driving circuit and liquid crystal display Capacitive load driving circuit and liquid crystal display

2006-06-20

2006-06-20

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

Reexamination Certificate

active

07064945

ABSTRACT:
An output circuit may include a power supply terminal, a ground terminal, and an output terminal connected to a capacitive load. Depending on the state of a load control input signal, the output circuit performs selectively a charging-current supplying operation of supplying a charging-current from the power supply terminal to the capacitive load and a discharging-current withdrawing operation of withdrawing a discharging-current from the capacitive load to the ground terminal. An overcharging-current prevention switch is provided to detect a short circuit between the output terminal and the ground terminal so as to stop or suppress the charging-current supplying operation. An overdischarging-current prevention switch is provided to detect a short circuit between the output terminal and the power supply terminal so as to stop or suppress the discharging-current withdrawing operation.

REFERENCES:
patent: 3550025 (1970-12-01), Stodolsky
patent: 4733106 (1988-03-01), Okutsu et al.
patent: 6807040 (2004-10-01), Ivanov et al.
patent: 60-13559 (1985-01-01), None
patent: 2000174601 (2000-06-01), None

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