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公开(公告)号:US20160293334A1
公开(公告)日:2016-10-06
申请号:US15083649
申请日:2016-03-29
Applicant: TDK CORPORATION
Inventor: Shinji EHARA , Ikuhito ONODERA , Eiko WAKATA , Katsunori OSANAI , Masamichi TANIGUCHI
CPC classification number: H01G4/33 , H01G4/008 , H01G4/012 , H01G4/018 , H01G4/224 , H01G4/306 , H01L28/92
Abstract: A lower electrode (4) can have an uneven surface structure. An upper electrode (6) can also have the uneven surface structure. A projecting portion of the upper electrode (6) projecting to the lower electrode side is positioned in a gap between projecting portions of the lower electrode (4) and the lower electrode (4) includes Cu as a main component. Young's moduli of a substrate (1), a stress adjustment layer (2), and the lower electrode (4) have a specific relation. Also, corner portions of radii (R1) of curvature positioned inside a projecting portion (4b) have a specific relation.
Abstract translation: 下电极(4)可以具有不均匀的表面结构。 上电极(6)也可以具有不平坦的表面结构。 上部电极(6)的突出于下部电极侧的突出部分位于下部电极(4)的突出部分之间的间隙中,下部电极(4)包括Cu作为主要部件。 衬底(1),应力调节层(2)和下电极(4)的杨氏模具具有特定的关系。 此外,位于突出部分(4b)内部的曲率半径(R1)的角部分具有特定的关系。