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SEMICONDUCTOR DEVICE AND DRIVING METHOD OF THE SAME

  • US 20140306935A1
  • Filed: 04/02/2014
  • Published: 10/16/2014
  • Est. Priority Date: 04/12/2013
  • Status: Active Grant
First Claim
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1. A semiconductor device comprising:

  • a display portion comprising a plurality of pixels and a plurality of photosensors;

    a first ultrasonic wave transmitter configured to output a first ultrasonic wave;

    a second ultrasonic wave transmitter configured to output a second ultrasonic wave;

    a first ultrasonic wave receiver configured to detect the first ultrasonic wave reflected by an object;

    a second ultrasonic wave receiver configured to detect the second ultrasonic wave reflected by the object;

    an arithmetic unit configured to calculate a distance between the display portion and the object based on the first ultrasonic wave and the second ultrasonic wave detected by the first ultrasonic wave receiver and the second ultrasonic wave receiver,wherein the first ultrasonic wave receiver includes a plurality of ultrasonic wave sensors arranged in a first direction, andwherein the second ultrasonic wave receiver includes a plurality of ultrasonic wave sensors arranged in a second direction different from the first direction.

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