| 摘要 |
<p>Disclosed is an electric field sensor using electric field changes, wherein the electric field sensor can solve the disadvantages of a conventional touch panel like an ultrasonic panel, infrared panel, resistive panel, or capacitive panel. The electric field sensor includes multiple conductive lines which receives electric field input signals from a signal generator supplying the electric field input signals having a predetermined amplitude and frequency to output the changes in the electric field as an output signal; an amplifier amplifying the output signal; and a control unit which uses the amplified output signals to extract the coordinates touched by a touch means.</p> |
