| 摘要 |
<p>PROBLEM TO BE SOLVED: To make a touch panel operate normally wherever and in whatever direction the touch panel is installed. SOLUTION: So that light receiving elements 22A and 22B receives infrared rays IR1 and IR2 emitted by light emitting elements 21A and 21B installed in the directions of the longitudinal and lateral axes of a display 24 to detect a place where the infrared rays are not received because of an obstacle such as a finger, a shading plate 23 installed between the light receiving elements 22A arranged longitudinally and laterally is slanted at a specific angleθto the infrared-ray directions of the rising sun, setting sun, etc., so that infrared rays from the rising sun, setting sun, etc., do not impinge on the light receiving element 22A.</p> |
