Invention Grant
US07678724B2 Electronic device, dielectric ceramic composition and the production method
失效
电子器件,电介质陶瓷组合物及其制备方法
- Patent Title: Electronic device, dielectric ceramic composition and the production method
- Patent Title (中): 电子器件,电介质陶瓷组合物及其制备方法
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Application No.: US11808533Application Date: 2007-06-11
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Publication No.: US07678724B2Publication Date: 2010-03-16
- Inventor: Miyuki Yanagida , Akira Sato
- Applicant: Miyuki Yanagida , Akira Sato
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2006-162796 20060612
- Main IPC: C04B35/468
- IPC: C04B35/468

Abstract:
A production method of a dielectric ceramic composition comprising a main component including at least one selected from BaTiO3, BaCaTiO3, BaTiZrO3 and BaCaTiZrO3, and a fourth subcomponent including rare earth oxide; comprising steps of dividing a material of the main component to a first main component material and a second main component material, obtaining a post-reaction material by making the material of the first main component react in advance with a part of the fourth subcomponent material, and adding the material of the second main component and rest of the fourth subcomponent material into the post-reaction material; wherein, when number of moles of the first main component is n1 and number of moles of the second main component is n2, a ratio is 0.5≦n1/(n1+n2)≦1: by which preferable characteristic can be obtained even when dielectric layers are made thin.
Public/Granted literature
- US20070284792A1 Electronic device, dielectric ceramic composition and the production method Public/Granted day:2007-12-13
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