Invention Grant
- Patent Title: Thin-film capacitor
- Patent Title (中): 薄膜电容器
-
Application No.: US12103234Application Date: 2008-04-15
-
Publication No.: US07898792B2Publication Date: 2011-03-01
- Inventor: Yutaka Takeshima , Masanobu Nomura , Takeshi Inao
- Applicant: Yutaka Takeshima , Masanobu Nomura , Takeshi Inao
- Applicant Address: JP Kyoto-fu
- Assignee: Murata Manufacturing Co., Ltd
- Current Assignee: Murata Manufacturing Co., Ltd
- Current Assignee Address: JP Kyoto-fu
- Agency: Dickstein Shapiro LLP
- Priority: JP2005-303143 20051018; JP2006-135571 20060515
- Main IPC: H01G4/06
- IPC: H01G4/06 ; H01G4/20

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
- US20080186654A1 THIN-FILM CAPACITOR Public/Granted day:2008-08-07
Information query