| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a touch panel device having excellent water resistance/hygienic characteristics. <P>SOLUTION: This touch panel device has: an operation part 54 having a plurality of input operation faces; a transmission part 51 having a transmission antenna transmitting an electric wave beam; a reception part 53 having a plurality of reception antennas receiving the electric wave beam emitted from the transmission antenna, and a plurality of diodes each detecting a current component flowing through each of the plurality of reception antennas; and a control part 53 deciding that a finger of a user contacts or approaches the operation part 54 based on detection results (reception power) of the plurality of diodes, and performing output to the outside. In the touch panel device, the operation part 54 is disposed on radiative lines of the electric wave beam toward the reception antennas from the transmission antenna, and the control part 53 decides that the finger of the user contacts or approaches the input operation face on a distant side to a front edge of the operation part 54 when the current components flowing through at least two of the plurality of reception antennas corresponding to the plurality of input operation faces become a prescribed threshold value or below. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
