| 摘要 |
PURPOSE: A high resolution optical touch panel setting a frequency of a modulated light on a neighboring sector differently and recognizing it by an analog level is provided to prevent wrong operation of sensors by using a modulated infrared light, to remove the failure due to the neighboring sensor, and to realize the high resolution of 1 millimeter by improving the impossibility of the high resolution screen configuration. CONSTITUTION: In order to recognize the coordinates in the touch panel, a position of a detected sensor is understood by respectively arranging a light emitting senor and a light receiving sensor parallel to a lengthwise and a crosswise direction. The modulated light completely not affected by the disturbance light is used for a receiving/emitting light diode. The modulated light of the neighboring light emitting sensor uses the modulation frequency different with each other. Thus, the interference between neighboring sensors is completely not occurred. |
