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    • 4. 发明专利
    • Manufacturing method of silicon carbide semiconductor device
    • 碳化硅半导体器件的制造方法
    • JP2012222060A
    • 2012-11-12
    • JP2011084224
    • 2011-04-06
    • Mitsubishi Electric Corp三菱電機株式会社
    • KONISHI KAZUYANAKAKI YOSHIYUKIFUJII YOSHIO
    • H01L29/47H01L21/329H01L29/872
    • H01L29/872
    • PROBLEM TO BE SOLVED: To provide a manufacturing method of a silicon carbide semiconductor device capable of reducing elimination of ion-implanted players while reducing contact resistance.SOLUTION: A manufacturing method of a silicon carbide semiconductor device comprises: (a) a step of forming oxide film mask layers 21 and 22 on a surface of a silicon carbide semiconductor substrate as a mask and implanting ions in the surface at room temperature; (b) a step of activating and annealing the ion-implanted surface of the silicon carbide semiconductor substrate; (c) a step of dry-etching the surface of the silicon carbide semiconductor substrate after activating and annealing the surface; (d) a step of forming a sacrificial oxide film 5 by sacrificially oxidizing the surface of the silicon carbide semiconductor substrate after dry-etching the surface; (e) a step of removing the sacrificial oxide film 5 by etching it with dilute hydrofluoric acid of concentration of 10% or less in 5 minutes; and (f) a step of forming an ohmic electrode 6 on a rear surface of the silicon carbide semiconductor substrate and a Schottky electrode 7 in a prescribed region on the surface of the silicon carbide semiconductor substrate, respectively.
    • 要解决的问题:提供能够减少离子注入的p + 层的同时降低接触电阻的碳化硅半导体器件的制造方法。 解决方案:碳化硅半导体器件的制造方法包括:(a)在碳化硅半导体衬底的表面上形成氧化膜掩模层21和22作为掩模并在室内将表面注入离子的步骤 温度; (b)激活和退火碳化硅半导体衬底的离子注入表面的步骤; (c)在激活和退火表面之后干法蚀刻碳化硅半导体衬底的表面的步骤; (d)通过在干式蚀刻表面之后牺牲氧化碳化硅半导体衬底的表面形成牺牲氧化膜5的步骤; (e)通过用5分钟内浓度为10%以下的稀氢氟酸蚀刻去除牺牲氧化膜5的步骤; 和(f)分别在碳化硅半导体衬底的表面上形成欧姆电极6的步骤和在碳化硅半导体衬底的表面上的规定区域中的肖特基电极7。 版权所有(C)2013,JPO&INPIT
    • 6. 发明专利
    • Method of manufacturing interboard connection structure, interboard connection structure and package
    • 板间连接结构的制造方法,板间连接结构与包装
    • JP2008130601A
    • 2008-06-05
    • JP2006310424
    • 2006-11-16
    • Mitsubishi Electric Corp三菱電機株式会社
    • OGAWA SHINPEIFUJII YOSHIOFUKUMOTO HIROSHIYUASA TAKESHITAWARA YUKIHIROOHASHI HIDEMASA
    • H01L23/02H05K1/14H05K3/36
    • PROBLEM TO BE SOLVED: To provide an interboard connection structure with appropriate transmission characteristic of electric signal among substrates by preventing deformation or breakage of a first substrate or a conductive layer even if a second substrate is stacked on the first substrate having brittle structure or the conductive layer.
      SOLUTION: The method of manufacturing an interboard connection structure includes a step for fixing a first substrate provided with a conductive layer and a second substrate provided with a through hole at the corresponding position to the conductive layer are fixed by making clearance between the second substrate and the conductive layer and using an area other than the conductive layer area; and a step for inserting a liquid conductive material into the through hole and forming a penetrated conductive part with metal filled in the through hole and in contact with the conductive layer.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使第二基板堆叠在具有脆性结构的第一基板上,通过防止第一基板或导电层的变形或断裂来提供具有适当的基板之间的电信号传输特性的板间连接结构 或导电层。 解决方案:制造板间连接结构的方法包括用于固定设置有导电层的第一基板和在与导电层相对应的位置处设置有通孔的第二基板的步骤, 第二基板和导电层,并且使用除了导电层区域之外的区域; 以及将液体导电材料插入到通孔中并用填充在通孔中并与导电层接触的金属形成穿透导电部分的步骤。 版权所有(C)2008,JPO&INPIT
    • 7. 发明专利
    • Antenna unit
    • 天线单元
    • JP2007324712A
    • 2007-12-13
    • JP2006150024
    • 2006-05-30
    • Mitsubishi Electric Corp三菱電機株式会社
    • YAMASHITA AKIRAYOSHIDA YUKIHISATAGUCHI MOTOHISAFUJII YOSHIOKOGA YOKO
    • H01Q1/38H01L23/12H01Q13/08
    • PROBLEM TO BE SOLVED: To provide an antenna unit in which dielectric loss can be reduced while suppressing increase in cost.
      SOLUTION: The antenna unit comprises a silicon upper substrate 10 and a silicon lower substrate 20, a radiation conductor 30 provided on the major surface of the silicon upper substrate 10, a ground conductor 40 with a slot 400 provided between the silicon upper substrate 10 and the silicon lower substrate 20, a conductive layer 50 provided on the backside of the silicon lower substrate 20 oppositely to the ground conductor 40, and a contact 60 provided in a through-hole 600 formed in the silicon lower substrate 20 in order to connect the ground conductor 40 and the conductive layer 50 electrically. The ground conductor 40 has a three layer structure including a first film 41 touching the contact 60, a second film 42 formed on the first film 41, and a third film 43 formed on the second film 42. The first film 41 exhibits higher wettability to solder 62 contained in the contact 60 than the second film 42.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种在抑制成本增加的同时可以降低介电损耗的天线单元。 解决方案:天线单元包括硅上基板10和硅下基板20,设置在硅上基板10的主表面上的辐射导体30,接地导体40,其具有设置在硅上基板 基板10和硅下基板20,设置在硅下基板20的与接地导体40相反的背面的导电层50以及设置在形成于硅下基板20中的通孔600中的触点60 以电连接接地导体40和导电层50。 接地导体40具有包括接触触点60的第一膜41,形成在第一膜41上的第二膜42和形成在第二膜42上的第三膜43的三层结构。第一膜41表现出较高的润湿性 焊料62比第二膜42包含在触点60中。版权所有:(C)2008,JPO&INPIT