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    • 23. 发明专利
    • INTER DIGITAL CAPACITOR
    • JPH07169911A
    • 1995-07-04
    • JP31621193
    • 1993-12-16
    • NEC CORP
    • HOSOYA KENICHIINOUE TAKASHI
    • H01L27/04H01L21/822
    • PURPOSE:To fix a distance from an input power supply terminal to an output power supply terminal without increasing an occupancy area and a propagation distance without depending on a route and avoiding high frequency characteristics deteriorated resultant from a phase difference. CONSTITUTION:This invention relates to an interdigital capacitor which connects an input power supply terminal 1 to the end of an input connection electrode 3 and connects an output power supply terminal 2 to the end of an output connection electrode 4 which is the opposite side of the input power supply terminal 1. This construction makes it possible to fix the distance from the input power supply terminal 1 to the output power supply terminal 2 without increasing an occupancy area or a signal propagation distance not based on its route and avoid high frequency characteristics deteriorated resultant from a phase difference.
    • 25. 发明专利
    • Field effect transistor, and manufacturing method of field effect transistor
    • 场效应晶体管和场效应晶体管的制造方法
    • JP2010245268A
    • 2010-10-28
    • JP2009092109
    • 2009-04-06
    • Nec Corp日本電気株式会社
    • INOUE TAKASHIANDO YUJINAKAYAMA TATSUO
    • H01L21/338H01L21/283H01L21/314H01L29/41H01L29/778H01L29/812
    • PROBLEM TO BE SOLVED: To improve an increase of an on-resistance and an increase of a current collapse in a field effect transistor.
      SOLUTION: The field effect transistor includes a semiconductor structure including a first semiconductor layer 6 and a second semiconductor layer 4 in heterojunction with the first semiconductor layer 6, a source electrode 8, a drain electrode 10, a gate electrode 9, each formed on the first semiconductor layer 6, and a protective film 11 including at least a metal-doped fullerene formed on the first semiconductor layer 6. A material of the protective film 11 may be a mixture of the metal-doped fullerene and an insulating material, or a mixture of the metal-doped fullerene and non-metal doped fullerene.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了改善场效应晶体管中导通电阻的增加和电流崩溃的增加。 解决方案:场效应晶体管包括半导体结构,其包括与第一半导体层6异质结的第一半导体层6和第二半导体层4,源电极8,漏电极10,栅电极9,各自 形成在第一半导体层6上的保护膜11和至少包含在第一半导体层6上形成的掺杂金属的富勒烯的保护膜11.保护膜11的材料可以是金属掺杂的富勒烯和绝缘材料的混合物 ,或金属掺杂的富勒烯和非金属掺杂的富勒烯的混合物。 版权所有(C)2011,JPO&INPIT
    • 28. 发明专利
    • Nitride semiconductor transistor
    • 氮化物半导体晶体管
    • JP2009246247A
    • 2009-10-22
    • JP2008093067
    • 2008-03-31
    • Nec Corp日本電気株式会社
    • MIYAMOTO HIRONOBUANDO YUJINAKAYAMA TATSUOOKAMOTO YASUHIROOTA KAZUKIINOUE TAKASHI
    • H01L21/338H01L29/778H01L29/812
    • PROBLEM TO BE SOLVED: To provide a normally-off type field effect transistor that is used for a power control device in which a drain current density equivalent to a high-frequency transistor in an on-state is available and a forward leakage current density of a gate electrode is suppressed when a positive voltage of 10-volt is applied to the gate electrode. SOLUTION: A field effect transistor is produced. It adopts an MIS-type structure in which a gate electrode is provided on the surface of an electron supply layer consisting of a nitride semiconductor through an insulation film to suppress a forward leakage current density of the gate electrode. A drain electrode has such a structure that an ohmic contact is formed on a p-type nitride semiconductor layer formed on the surface of the electron supply layer. The field effect transistor has a function to inject holes from the drain electrode portion into a channel layer beyond the electron supply layer in an on-state during a high-voltage operation. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种用于功率控制装置的常关型场效应晶体管,其中等效于处于导通状态的高频晶体管的漏极电流密度可用,并且正向泄漏 当对栅电极施加10伏的正电压时,抑制栅电极的电流密度。 解决方案:产生场效应晶体管。 采用MIS型结构,其中通过绝缘膜在由氮化物半导体构成的电子供给层的表面上设置栅极,以抑制栅电极的正向漏电流密度。 漏电极具有在形成在电子供给层的表面上的p型氮化物半导体层上形成欧姆接触的结构。 场效应晶体管具有在高电压操作期间将导通状态的漏极电极部分的空穴注入超过电子供给层的沟道层的功能。 版权所有(C)2010,JPO&INPIT
    • 29. 发明专利
    • Field-effect transistor and manufacturing method thereof
    • 场效应晶体管及其制造方法
    • JP2009206396A
    • 2009-09-10
    • JP2008049367
    • 2008-02-29
    • Nec Corp日本電気株式会社
    • INOUE TAKASHIYAMANOGUCHI KATSUMIANDO YUJIOKAMOTO YASUHIROMIYAMOTO HIRONOBU
    • H01L29/80H01L21/027H01L21/822H01L27/04
    • PROBLEM TO BE SOLVED: To solve a problem that, in an epitaxy for GaN-based or GaAs-based FET, there is recently a trend using a high-resistance epitaxy for a buffer layer in order to improve a withstand voltage of the buffer layer, but a charge-up phenomenon is generated during lithography by electron beam exposure for the patterning of a fine gate.
      SOLUTION: A path for electrons to be discharged is formed by metal wiring. More specifically, the metal wiring is arranged in a portion corresponding to a scribe line or an etch cut portion of a peripheral portion of each chip on a wafer on which an FET is manufactured, a portion which serves as a positive electrode or a grounding conductor for an electron beam on the wafer and the metal wiring are connected by metal, and furthermore, in a chip, a source electrode of the FET is made to be connected to the metal wiring around the chip by metal.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 解决的问题为了解决在GaN系或GaAs系FET的外延中存在的问题,为了提高缓冲层的耐电压性,近来存在使用高电阻外延的趋势 缓冲层,但是通过用于精细栅极图案化的电子束曝光在光刻期间产生电荷现象。 解决方案:通过金属布线形成电子放电的路径。 更具体地说,金属布线被布置在对应于在其上制造FET的晶片上的每个芯片的周边部分的划线或蚀刻切割部分的部分,用作正极的部分或接地导体 对于晶片上的电子束和金属布线通过金属连接,此外,在芯片中,通过金属将FET的源电极连接到芯片周围的金属布线。 版权所有(C)2009,JPO&INPIT
    • 30. 发明专利
    • Iii-v nitride semiconductor field-effect transistor and its manufacturing method
    • III-V氮化物半导体场效应晶体管及其制造方法
    • JP2008306083A
    • 2008-12-18
    • JP2007153537
    • 2007-06-11
    • Nec Corp日本電気株式会社
    • WAKEJIMA AKIOMIYAMOTO HIRONOBUINOUE TAKASHIOKAMOTO YASUHIRONAKAYAMA TATSUOKURODA NAOTAKAOTA KAZUKITANOMURA MASAHIROMURASE YASUHIROANDO YUJI
    • H01L21/338H01L21/28H01L29/778H01L29/812
    • PROBLEM TO BE SOLVED: To provide an FET which suppresses current collapse, relaxes an electric field generated at a drain side edge of a gate, and is operable at a high voltage.
      SOLUTION: A GaN buffer layer 102 and an AlGaN layer 103 are formed on a substrate 101. A source electrode 104 and a drain electrode 105 are formed on a surface of the AlGaN layer 103. Space between the source electrode 104 and the drain electrode 105 is covered by an SiN film 106. An opening is formed in the SiN film 106, while a recess is done in the AlGaN layer 103, and a gate electrode 107 is formed burying the opening and the recess. A bottom face portion of the gate electrode 107 includes a bottom flat portion 201 parallel to an AlGaN layer/GaN layer interface, and an inclination changing portion 202 not parallel to the interface. In a curve of the inclination changing portion 202, a slope of a tangent line changes continuously, and forms a projected shape downward.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了提供一种抑制电流崩溃的FET,可以松弛在栅极的漏极侧边缘处产生的电场,并且可以在高电压下工作。 解决方案:在衬底101上形成GaN缓冲层102和AlGaN层103.源电极104和漏极105形成在AlGaN层103的表面上。源电极104和 漏电极105被SiN膜106覆盖。在AlGaN层103中进行凹陷时,在SiN膜106中形成开口,并且形成埋入开口和凹部的栅电极107。 栅电极107的底面部分包括平行于AlGaN层/ GaN层界面的底部平坦部分201和不与界面平行的倾斜改变部分202。 在倾斜变化部分202的曲线中,切线的斜率连续变化,并且向下形成投影形状。 版权所有(C)2009,JPO&INPIT