Title:
LIQUID CRYSTAL PART DRIVING CIRCUIT OF ELECTRONIC EQUIPMENT
Document Type and Number:
Japanese Patent JPH0675202
Kind Code:
A
Abstract:
PURPOSE: To prevent an erroneous display by instantaneous eliminating a leak lighting display of liquid crystal which appears on a liquid crystal display part when the power source is cut off.
CONSTITUTION: An anode is connected to the plus side of a smoothing capacitor C2 and a diode D6 is so inserted that the cathode is connected to the entrance part of a constant-voltage circuit part X; when working electric power E is applied, a voltage charged in the smoothing capacitor C2 is discharged to instantaneously eliminating an unnecessary display which appears at the liquid crystal display part Y when the working electric power E is cut off.
Inventors:
KITAMURA YASUSHI
Application Number:
JP22667992A
Publication Date:
March 18, 1994
Filing Date:
August 26, 1992
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G02F1/133; G09G3/04; G09G3/18; (IPC1-7): G02F1/133; G09G3/04; G09G3/18
Attorney, Agent or Firm:
Ishida Chochichi (2 outside)
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