Apparatus for sensing touch pressure utilizing one or more photo detectors
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United States of America Patent
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Apr 23, 2019
Grant Date -
Jan 25, 2018
app pub date -
Jul 20, 2017
filing date -
Jul 22, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for sensing a touch pressure includes a display panel configured to display images, a window located on the display panel, the window including a display area and a non-display area at the outside of the display area, a first sensor disposed to align with the non-display area, the first sensor including a first optical filter and a first photo detector configured to generate a first sensing value corresponding to an intensity of light transmitted through the first optical filter from the display panel, and a controller configured to calculate a magnitude of a touch pressure based on the first sensing value.
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