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    • 12. 发明申请
    • MOTOR
    • 发动机
    • US20130002070A1
    • 2013-01-03
    • US13533400
    • 2012-06-26
    • Naoki MATSUMOTO
    • Naoki MATSUMOTO
    • H02K11/02
    • H02K11/026H02K5/225
    • A motor includes an armature, a yoke, and an end bracket. The yoke has a bottom and an open end and accommodates the armature. The end bracket substantially closes the open end of the yoke. A connector portion, which bulges outward of the yoke, and a cutout portion are formed in the circumferential wall of the end bracket. A pair of feed members is provided to extend from the interior of the end bracket to the connector portion through the cutout portion. Each feed member has a plurality of connection portions. Each of a pair of terminals of each of a plurality of noise suppression elements is connected to each connection portion. The connection portions are formed in the feed member and arranged in the radial direction.
    • 电动机包括电枢,轭和端支架。 轭具有底部和开口端并容纳电枢。 端托架基本上封闭轭架的开口端。 在端托架的周壁上形成有一个连接部,该连接部从轭的外侧凸出,切口部形成。 一对进给构件设置成通过切口部分从端托架的内部延伸到连接器部分。 每个进料构件具有多个连接部分。 多个噪声抑制元件中的每一个的一对端子中的每一个连接到每个连接部分。 连接部分形成在馈送部件中并沿径向布置。
    • 14. 发明申请
    • DRIVE CIRCUIT AND TEST APPARATUS
    • 驱动电路和测试装置
    • US20130106450A1
    • 2013-05-02
    • US13562314
    • 2012-07-31
    • Masashi WATANABEKensuke SOEDANaoki MATSUMOTO
    • Masashi WATANABEKensuke SOEDANaoki MATSUMOTO
    • G05F5/00G01R31/28
    • G01R31/31924
    • The response characteristics of an output signal and current consumption are kept constant. A drive circuit for outputting an output signal having a voltage determined by a logic of an input signal includes a constant voltage generating section generating a constant bias voltage, a CML circuit outputting the output signal having the voltage determined by the logic of the input signal, where an amplitude of the output signal is determined by a constant current flowing through the CML circuit and a potential of the output signal is determined by the bias voltage, an adjustment constant current source that allows a constant current to flow out from a bias voltage output end of the constant voltage generating section, and a current setting section that sets in advance the constant current flowing into the adjustment constant current source, according to the constant current flowing through the CML circuit.
    • 输出信号和电流消耗的响应特性保持不变。 用于输出具有由输入信号的逻辑确定的电压的输出信号的驱动电路包括产生恒定偏置电压的恒压产生部分,输出具有由输入信号的逻辑确定的电压的输出信号的CML电路, 其中输出信号的幅度由流过CML电路的恒定电流确定,并且输出信号的电位由偏置电压确定,允许恒定电流从偏置电压输出流出的调节恒流源 恒定电压产生部分的端部和根据流过CML电路的恒定电流预先设定流入调节恒流源的恒定电流的电流设定部分。
    • 18. 发明申请
    • NITRIDE SEMICONDUCTOR WAFER AND METHOD OF PROCESSING NITRIDE SEMICONDUCTOR WAFER
    • 氮化物半导体滤波器和氮化物半导体滤波器的处理方法
    • US20100279440A1
    • 2010-11-04
    • US12836001
    • 2010-07-14
    • Masahiro NAKAYAMANaoki MATSUMOTOKoshi TAMAMURAMasao IKEDA
    • Masahiro NAKAYAMANaoki MATSUMOTOKoshi TAMAMURAMasao IKEDA
    • H01L21/66
    • H01L21/02008B24B37/08H01L21/02024Y10S438/959
    • Nitride semiconductor wafers which are produced by epitaxially grown nitride films on a foreign undersubstrate in vapor phase have strong inner stress due to misfit between the nitride and the undersubstrate material. A GaN wafer which has made by piling GaN films upon a GaAs undersubstrate in vapor phase and eliminating the GaAs undersubstrate bends upward due to the inner stress owing to the misfit of lattice constants between GaN and GaAs. Ordinary one-surface polishing having the steps of gluing a wafer with a surface on a flat disc, bringing another surface in contact with a lower turntable, pressing the disc, rotating the disc, revolving the turntable and whetting the lower surface, cannot remedy the inherent distortion. The Distortion worsens morphology of epitaxial wafers, lowers yield of via-mask exposure and invites cracks on surfaces. Nitride crystals are rigid but fragile. Chemical/mechanical polishing has been requested in vain. Current GaN wafers have roughened bottom surfaces, which induce contamination of particles and fluctuation of thickness.Circular nitride wafers having a diameter larger than 45 mm are made and polished. Gross-polishing polishes the nitride wafers in a pressureless state with pressure less than 60 g/cm2 by lifting up the upper turntable for remedying distortion. Distortion height H at a center is reduced to H≦12 μm. Minute-polishing is a newly-contrived CMP which polishes the nitride wafers with a liquid including potassium hydroxide, potassium peroxodisulfate and powder, irradiates the potassium peroxodisulfate with ultraviolet rays. The CMP-polished top surface has roughness RMS of 0.1 nm≦RMS≦5 nm or more favorably 0.1 nm≦RMS≦0.5 nm. The CMP-polished bottom surface has roughness RMS of 0.1 nm≦RMS≦5000 nm or more favorably 0.1 nm≦RMS≦2 nm. TTV is less than 10 μm.
    • 由氮化物和下衬底材料之间的失配导致的,由外延生长的氮化物膜在气相中的外来下衬衬底产生的氮化物半导体晶片具有很强的内部应力。 通过在气相中在GaAs下衬底上堆叠GaN膜而消除GaAs下衬层而制成的GaN晶片由于内部应力而由于GaN和GaAs之间的晶格常数的失配而向上弯曲。 通常的单面抛光具有将晶片与平面盘上的表面胶合的步骤,使另一表面与下转台接触,按压盘,旋转盘,旋转转台并磨削下表面,不能补救 固有失真。 失真会加剧外延晶片的形态,降低通孔掩模曝光的产量,并引起表面裂纹。 氮化物晶体是刚性但脆弱的。 化学/机械抛光已被要求徒劳。 当前的GaN晶圆已经粗糙化了底面,这引起了颗粒的污染和厚度的波动。 制造和抛光直径大于45mm的圆形氮化物晶片。 粗抛光通过提升上转盘来补偿变形,在压力小于60g / cm2的无压状态下抛光氮化物晶片。 中心处的失真高度H降低到H≦̸ 12μm。 分钟抛光是一种新设计的CMP,它们用包括氢氧化钾,过氧硫酸钾和粉末的液体对氮化物晶片进行抛光,用紫外线照射过氧二硫酸钾。 CMP抛光的顶表面的粗糙度RMS为0.1nm≦̸ RMS≦̸ 5nm或更优选为0.1nm≦̸ RMS≦̸ 0.5nm。 CMP抛光的底表面的粗糙度RMS为0.1nm≦̸ RMS≦̸ 5000nm或更优选为0.1nm≦̸ RMS≦̸ 2nm。 TTV小于10微米。