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Mobile terminal comprising stylus pen and touch panel

  • US 10,228,786 B2
  • Filed: 08/25/2014
  • Issued: 03/12/2019
  • Est. Priority Date: 08/30/2013
  • Status: Active Grant
First Claim
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1. A mobile terminal having a stylus pen, the mobile terminal comprising:

  • a touch panel having a plurality of touch panel electrodes;

    a display disposed to overlap the touch panel;

    a controller operably coupled with the display; and

    a stylus pen configured to transmit and receive an electrical signal to and from the touch panel using capacitive coupling,wherein the stylus pen comprises;

    a main body;

    a pen tip formed of a conductor and protruding to outside of the main body to apply a touch to the touch panel; and

    an LC circuit provided within the main body, configured to include an inductor and a capacitor, and electrically connected to the pen tip to generate capacitive coupling between the touch panel and the stylus pen,wherein the controller is configured to cause the display to;

    display an image corresponding to a touch trace of the stylus pen on the basis of a touch applied by the stylus pen; and

    display the image in different manners according to a degree to which the pen tip is tilted, andwherein, in a state in which the image is displayed, when a drag touch is applied in a state in which the pen tip is tilted at a slope equal to or greater than a preset slope, the controller is further configured to delete the image overlapping a trace of the drag touch.

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