Invention Grant
US07662694B2 Capacitor having adjustable capacitance, and printed wiring board having the same
有权
具有可调电容的电容器和具有其的印刷电路板
- Patent Title: Capacitor having adjustable capacitance, and printed wiring board having the same
- Patent Title (中): 具有可调电容的电容器和具有其的印刷电路板
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Application No.: US11495668Application Date: 2006-07-31
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Publication No.: US07662694B2Publication Date: 2010-02-16
- Inventor: Hajime Sakamoto , Takashi Kariya , Yasuhiko Mano
- Applicant: Hajime Sakamoto , Takashi Kariya , Yasuhiko Mano
- Applicant Address: JP Ogaki
- Assignee: Ibiden Co., Ltd.
- Current Assignee: Ibiden Co., Ltd.
- Current Assignee Address: JP Ogaki
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Main IPC: H01L21/20
- IPC: H01L21/20 ; H01L21/02 ; H01G4/005
Abstract:
The capacitance of a capacitor is adjusted by forming openings in one of a pair of electrodes of the capacitor, the openings having different sizes d1, d2, d3, . . . , wherein d1>d2>d3> . . . and being arranged in numbers n1, n2, n3, . . . , respectively; and sequentially filling a necessary number of the openings with an electroconductive material in descending order of the size so as to adjust the capacitance gradually with an increasing degree of precision. The resulting capacitor is mounted to a printed wiring board.
Public/Granted literature
- US20080024953A1 Capacitor having adjustable capacitance, and printed wiring board having the same Public/Granted day:2008-01-31
Information query
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