| 摘要 |
<p>PURPOSE:To input coordinate with a pencil and a pen, by forming a conductive surface electrode on the surface of a soft synthetic resin substance and locating the electrode plane so as to be contacted on a pressure sensing rubber sheet. CONSTITUTION:A pressure sensing rubber sheet 2 is placed on the upper surface of a resistive plate 1 and a surface electrode 10 is mounted on the upper surface of this sheet 2. The surface electrode 10 is coated with a thin metallic plate 12 acting like an electrode at the lower side of a soft synthetic resin substance 11 and provided so that the said plate 12 contacts the said sheet 2. The metallic 12 is connected to a terminal b1 via a lead 13. Thus, a voltage is generated between the metallic plate 12 of the surface electrode 10 and a terminal a1 through the pressing of a pen 14 and voltages v1 and v2 corresponding to coordinates of the pen 14 are generated between terminals b1 and b2. Thus, the input of coordinates can be done with a conventional pen 14, allowing to improve the operability.</p> |
