Writing instrument for electrostatic capacitance type touch panel
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United States of America Patent
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Jun 16, 2015
Grant Date -
May 8, 2014
app pub date -
Nov 5, 2013
filing date -
Nov 8, 2012
priority date (Note) -
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Abstract
A writing instrument for an electrostatic capacitance type touch panel is provided which includes a main body shaft having a hollow portion and made of non-conductive material, a core portion composed of a member having base material made of non-conductive material and modified with conductive material, and a brush tip including conductive material. The core portion is provided in the hollow portion, and the brush tip and the core portion are in contact with each other. The member is a conductive fiber having base material made of polyester-based synthetic fiber, acrylic synthetic fiber, or polyamide-based synthetic fiber and covered with conductive material. Further, the core portion is formed by filling a cylindrical body with the conductive fiber. This writing instrument can employ non-conductive material for the main body shaft, and capable of performing touch-panel operation stably.
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