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Infrared sensor module, touch sensing method thereof, and auto calibration method applied to the same

  • US 8,723,122 B2
  • Filed: 11/02/2011
  • Issued: 05/13/2014
  • Est. Priority Date: 11/02/2010
  • Status: Active Grant
First Claim
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1. An infrared sensor module including a sensor block with a light receiving region, wherein:

  • the sensor block is perpendicular to a surface of a display panel;

    the light receiving region is divided into ‘



    n’

    blocks (where, each of ‘

    m’ and



    n’

    is a natural number of two or more) arranged in ‘

    m’

    rows by ‘

    n’

    columns, and each of the blocks includes a plurality of light receiving pixels arranged in the same row; and

    optical signals of a particular block, to which light is received, are transmitted to a touch control unit, wherein the particular block is selected from at least one of the ‘

    m’

    rows with respect to each of the ‘

    n’

    columns,wherein the infrared sensor module is formed on an inner surface of a case top encasing the display panel and the light receiving region has a height under a height of the inner surface of the case top andwherein a block which is selected during an auto-calibration is activated as a Region of Interest (ROI) during detection of a touch.

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