| 摘要 |
PROBLEM TO BE SOLVED: To remarkably raise the position accuracy of the detection electrode of an electric potential sensor. SOLUTION: The potential sensor is composed by arranging a tuning fork which provides a chopper for cutting by a predetermined period lines of electric force radiated from a substance to be measured, and a detection electrode for receiving the lines of electric force and picking an output up, in a case having a base member. The detection electrode in the potential sensor is formed by a technique of forming a printed circuit on a board. By this sensor, the position accuracy of the detection electrode can be raised remarkably, and solder, an adhesive, etc., for fixing and wiring-connection of the detection electrode, the base member, etc. can be dispensed with also. Not to mention of improvement of the noise-proof properties of products and cost reduction in their manufacture, variations in the products are suppressed, and the yield rate can be increased. Besides, further miniaturization, precision increase, and stability enhancement of the products can be acquired. COPYRIGHT: (C)2005,JPO&NCIPI
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