Invention Grant
- Patent Title: Thin-film capacitor having a connecting part of a lead conductor disposed within an opening in a protective layer
- Patent Title (中): 薄膜电容器具有设置在保护层的开口内的引线导体的连接部分
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Application No.: US13009395Application Date: 2011-01-19
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Publication No.: US08390982B2Publication Date: 2013-03-05
- Inventor: Yutaka Takeshima , Masanobu Nomura , Takeshi Inao
- Applicant: Yutaka Takeshima , Masanobu Nomura , Takeshi Inao
- Applicant Address: JP Nagaokakyo-Shi, Kyoto-fu
- Assignee: Murata Manufacturing Co., Ltd.
- Current Assignee: Murata Manufacturing Co., Ltd.
- Current Assignee Address: JP Nagaokakyo-Shi, Kyoto-fu
- Agency: Dickstein Shapiro LLP
- Priority: JP2005-303143 20051018; JP2006-135571 20060515
- Main IPC: H01G4/228
- IPC: H01G4/228 ; H01G4/06

Abstract:
A thin-film capacitor and a method for making the thin-film capacitor having a structure that can prevent vertical stress acting on outer connecting terminals, such as bumps, from concentrating on electrode layers, and capable of easily increasing the equivalent series resistance to a desired value. The thin-film capacitor includes a substrate, a capacitor unit disposed above the substrate and composed of at least one dielectric thin film and two electrode layers, a protective layer covering at least part of the capacitor unit, a lead conductor electrically connected to one of the electrode layers of the capacitor unit, and a bump disposed above the lead conductor. The lead conductor includes a connecting part disposed in an opening in the protective layer and electrically connected to one of the electrode layers of the capacitor unit, and a wiring part extending over the protective layer. The bump is disposed above the wiring part.
Public/Granted literature
- US20110110016A1 THIN-FILM CAPACITOR Public/Granted day:2011-05-12
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