Search International and National Patent Collections

1. (WO2015044701) TOUCHPEN FOR CAPACITIVE TOUCH PANEL AND METHOD OF DETECTING A POSITION OF A TOUCHPEN

Pub. No.:    WO/2015/044701    International Application No.:    PCT/IB2013/002142
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Fri Sep 27 01:59:59 CEST 2013
IPC: G06F 3/044
G06F 3/0354
Applicants: SONY CORPORATION
Inventors: JOHANSSON, Magnus
LJUNG, Peter
HUNT, Alexander
Title: TOUCHPEN FOR CAPACITIVE TOUCH PANEL AND METHOD OF DETECTING A POSITION OF A TOUCHPEN
Abstract:
The disclosure relates to the technical field of capacitive touch panels and discloses a touchpen which may be used in mobile phones, computers and other devices with touch panels for writing characters, letters and other symbols. In particular it relates to a capacitive touchpen (10) for inputting information into an electronic device (1) through touching of a capacitive touch panel (30), the capacitive pen comprising an elongated body member (11) comprising a conductive part (13) and a tip (12) disposed at one end of the body member (11) having a contact surface (14) for contacting the capacitive touch panel (30). The conductive part (13) is configured such that the distortion of the touch panel's electrostatic field caused by the conductive part (13) when changing the position of the touch pen (10) in relation to the capacitive touch panel (30), when the contact surface is kept in contact with the touch panel (30), is sufficient to register a change in capacitance by the capacitive touch panel (30). The disclosure further relates to methods for detecting the position of a touch pen as well as to an electronic device and a computer program.