초록 ▼

An electrostatic capacitance type detecting device which includes a first electrode placed in the proximity of an object to be measured, a second electrode placed in the proximity of the first electrode, a film like dielectric member interposed between the first and the second electrodes, a first re

An electrostatic capacitance type detecting device which includes a first electrode placed in the proximity of an object to be measured, a second electrode placed in the proximity of the first electrode, a film like dielectric member interposed between the first and the second electrodes, a first resistor one end of which is connected to one end of the first electrode, a second resistor one end of which is connected to one end of the second electrode, an a. c. signal generator connected to the other ends of the first and the second resistors and to the ground and a phase difference detecting means connected to the first and the second electrodes.

대표청구항 ▼

An electrostatic capacitance type sensing device comprising: a first electrode to be placed in the proximity of an object to be measured; a second electrode placed in the proximity of said first electrode; a film like dielectric spacer means interposed between said first and said second electrodes;

An electrostatic capacitance type sensing device comprising: a first electrode to be placed in the proximity of an object to be measured; a second electrode placed in the proximity of said first electrode; a film like dielectric spacer means interposed between said first and said second electrodes; a first resistor, one end of which is connected to one end of said first electrode; a second resistor, one end of which is connected to one end of said second electrode; an a.c. signal generator connected to the other ends of said first and the second resistors and to the ground; and a phase difference detecting means connected to said first and the second electrodes.