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STYLUS FOR USE WITH CAPACITIVE TOUCH PANEL

  • US 20150109239A1
  • Filed: 05/02/2014
  • Published: 04/23/2015
  • Est. Priority Date: 10/18/2013
  • Status: Active Grant
First Claim
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1. A stylus for use with a capacitive touch panel, comprising:

  • a housing;

    a magnetic core disposed inside the housing, the magnetic core having an axial through hole which defines a bore diameter; and

    a pen tip disposed at an end of the housing, the pen tip being made of conductor, the pen tip having a rod portion and a contacting portion, wherein the rod portion is inserted into the axial through hole, and the contacting portion protrudes from the pen shell, and wherein the contacting portion has a cylindrical surface and a part spherical surface, the cylindrical surface defining a first diameter, the part spherical surface defining a second diameter, and wherein the first diameter is less than the second diameter, and the first diameter is greater than or equal to the bore diameter, and wherein the part spherical surface defines a radian which is between π

    /2 and 2 π

    /3.

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