Title:
可変容量コンデンサおよび位置指示器
Document Type and Number:
Japanese Patent JP5483430
Kind Code:
B2
Abstract:
A variable capacitor is disclosed, including: a dielectric having a first surface and a second surface opposing the first surface; a first electrode disposed on the first surface of the dielectric; a second electrode disposed to face the second surface of the dielectric; and a pressing member configured to cause the second electrode and the dielectric to contact each other when a pressing force is applied thereto (e.g., when a pen-shaped position indicator including the variable capacitor is pressed against a tablet). In the variable capacitor, the second electrode includes at least one electrode piece having an abutting central portion, against which the pressing member transmits a pressing force applied thereto, and an extension portion that radially extends from the abutting central portion toward a circumferential portion of the dielectric. A contact area between the dielectric and the second electrode is changed in accordance with a pressing force applied to the pressing member, to thereby change a capacitance of the variable capacitor.
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Inventors:
Fukushima Yasuyuki
Hiroyuki Fujitsuka
Hiroyuki Fujitsuka
Application Number:
JP2010080242A
Publication Date:
May 07, 2014
Filing Date:
March 31, 2010
Export Citation:
Assignee:
Wacom Co., Ltd.
International Classes:
H01G5/04; G06F3/03; G06F3/041; H01G5/01; H01G5/011; H01G5/16
Domestic Patent References:
| JP4096212A | ||||
| JP5275283A | ||||
| JP2009076492A | ||||
| JP10149951A | ||||
| JP2011186803A | ||||
| JP2010129920A | ||||
| JP2010117943A | ||||
| JP2009130135A | ||||
| JP2009105290A |
Attorney, Agent or Firm:
Masami Sato