Electrostatic detection apparatus and method, and coordinate...

Details Electrostatic detection apparatus and method, and coordinate... Electrostatic detection apparatus and method, and coordinate...

2008-04-15

2008-04-15

Hirshfeld, Andrew H. (Department: 2858)

Electricity: measuring and testing

Electrostatic field

C324S662000, C324S688000

Reexamination Certificate

active

11136597

ABSTRACT:
A shielding member is provided as an electrostatic protection device in extension lines that extend from a sensing area to switching devices via extension areas correspondingly. As a result, even if a body to be detected such as a finger contacts the extension area, it is possible to reduce the amount of the change of an electrostatic capacitance with respect to the movement of the body to be detected. Therefore, it is possible to reduce influences exerted on data to be detected, and an electrostatic detection apparatus having improved coordinate detection accuracy can be provided.

REFERENCES:
patent: 6707093 (2004-03-01), Siegel et al.
patent: 6828806 (2004-12-01), Hirota et al.
patent: 2002/0121909 (2002-09-01), Sato et al.
patent: 2003/0052867 (2003-03-01), Shigetaka et al.
patent: 2003/0080755 (2003-05-01), Kobayashi

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