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    • 2. 发明授权
    • Compound semiconductor field effect transistor
    • 复合半导体场效应晶体管
    • US06534790B2
    • 2003-03-18
    • US09796803
    • 2001-03-02
    • Takehiko KatoKazuki OtaHironobu MiyamotoNaotaka IwataMasaaki Kuzuhara
    • Takehiko KatoKazuki OtaHironobu MiyamotoNaotaka IwataMasaaki Kuzuhara
    • H01L2915
    • H01L29/66462H01L29/7785
    • The present invention provides a field effect transistor (FET) having, on a semi-insulating compound semiconductor substrate, a buffer layer; an active layer that includes a channel layer made of a first conductive-type epitaxial growth layer (e.g. InGaAs); source/drain electrodes formed on a first conductive-type contact layer which is formed either on said active layer or on a lateral face thereof; a gate layer made of a second conductive-type epitaxial growth layer (e.g. p+-GaAs); and a gate electrode formed on said gate layer; which further has, between said second conductive-type gate layer and said channel layer, a semiconductor layer (e.g. InGaP) that rapidly lowers the energy of the valance band spreading from said gate layer to said channel layer. The present invention improves withstand voltage characteristic of a FET having a pn junction in a gate region (JFET) and realizes stable operations of a JFET.
    • 本发明提供一种在半绝缘化合物半导体衬底上具有缓冲层的场效应晶体管(FET) 包括由第一导电型外延生长层(例如InGaAs)制成的沟道层的有源层; 源极/漏极,形成在形成在所述有源层上或其侧面上的第一导电型接触层上; 由第二导电型外延生长层(例如p + -GaAs)制成的栅极层; 以及形成在所述栅极层上的栅电极; 在所述第二导电型栅极层和所述沟道层之间还具有快速降低从所述栅极层扩散到所述沟道层的能带的能量的半导体层(例如InGaP)。 本发明提高了在栅极区(JFET)中具有pn结的FET的耐压特性,并且实现了JFET的稳定操作。
    • 10. 发明授权
    • Fuel injection valve
    • 燃油喷射阀
    • US07066408B2
    • 2006-06-27
    • US10826355
    • 2004-04-19
    • Tomojiro SugimotoKeiso TakedaShigeo FurunoKimitaka SaitoYasuhide TaniAtsuya OkamotoTakehiko KatoTatsushi Nakashima
    • Tomojiro SugimotoKeiso TakedaShigeo FurunoKimitaka SaitoYasuhide TaniAtsuya OkamotoTakehiko KatoTatsushi Nakashima
    • B05B1/26F02M61/00
    • F02M61/1846F02M61/162F02M61/1833F02M61/1853
    • There is provided a fuel injection valve in which nozzle holes are formed on a metering plate and fuel flowing on a face of the metering plate on the upstream side is injected outside of a face of the metering plate on the downstream side through the nozzle holes. The fuel injection valve includes a vortex flow generator means for changing a flow of fuel passing in each nozzle hole into a vortex flow, wherein the vortex flow generator means is provided on the upstream side of the metering plate. The vortex flow means is a vortex flow generator groove provided on an upper face of the metering plate and connected with a wall face of an entrance of the nozzle hole, and a main stream of fuel flowing in the groove is directed to a position shifted from the center of the nozzle hole. Alternatively, the vortex flow means is a protrusion formed on an upper face of the metering plate. A flow of fuel is changed into a vortex flow in the nozzle hole and injected from the nozzle hole. Therefore, fuel can be excellently atomized and diffused as a megaphone-shape without being formed into a liquid column spray.
    • 提供了一种燃料喷射阀,其中在计量板上形成喷嘴孔,并且在上游侧的计量板的表面上流动的燃料通过喷嘴孔被喷射到下游侧的计量板的表面之外。 燃料喷射阀包括用于将通过每个喷嘴孔的燃料流改变为涡流的涡流发生器装置,其中涡流产生装置设置在计量板的上游侧。 涡流装置是设置在计量板的上表面上并与喷嘴孔的入口的壁面连接的涡流发生器槽,并且在槽中流动的主燃料流被引导到从 喷嘴孔的中心。 或者,涡流装置是形成在计量板的上表面上的突起。 燃料流变成喷嘴孔中的涡流并从喷嘴孔喷出。 因此,燃料可以作为扩音器形状而被非常雾化和扩散,而不会形成液柱喷雾。