| 摘要 |
<p>PURPOSE: To exclude misinput by arraying light emitting elements and optical sensor elements on the reverse side of a display device alternately two- dimensionally. CONSTITUTION: An optical sensor part 40 has the light emitting elements 20 and optical sensor elements 30 arrayed alternately two-dimensionally and is installed closely in parallel to the reverse surface of a display device part 10. When an operator touches a specific part according to contents displayed at the display device part 10, only the specific optical sensor element 31 arranged at the corresponding specific part of the optical sensor 4 detects an increase in photodetection. The coordinates where the optical sensor element 31 detecting the increase in photodetection is present is judged as the coordinates where the touch input is done.</p> |
