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    • 2. 发明专利
    • n-TYPE ALN CRYSTAL AND METHOD FOR MANUFACTURING THE SAME
    • n型ALN晶体及其制造方法
    • JP2007261883A
    • 2007-10-11
    • JP2006089897
    • 2006-03-29
    • Sumitomo Electric Ind Ltd住友電気工業株式会社
    • TAKEUCHI HISAOCHIKUNO TAKASHIMIYANAGA TOMOMASA
    • C30B29/38C01B21/072H01L21/203H01L21/205
    • PROBLEM TO BE SOLVED: To obtain a low-resistance n-type AlN semiconductor crystal with improved productivity and carrier concentration, and to obtain a short wavelength light emitting element and a power device.
      SOLUTION: A low-resistance n-type AlN crystal is obtained by substituting a part of Al atoms in an AlN crystal with group IIIa elements (such as Sc, Y and La) or/and group IIIb elements (such as B, Ga and In), and substituting one adjoining nitrogen (N) atom with an oxygen (O) atom to form a shallow impurity level. In particular, the total concentration (C
      3A ) of the group IIIa elements and/or group IIIb elements is preferably 1×10
      18 cm
      -3 or more, and the O concentration (Co) is preferably in a range of 0.01C
      3A 3A . Well-known methods such as CVD, MBE and sublimation methods can be employed as a method for manufacturing the AlN crystal.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:获得具有提高的生产率和载流子浓度的低电阻n型AlN半导体晶体,并获得短波长发光元件和功率器件。 解决方案:通过用IIIa族元素(例如Sc,Y和La)或/和IIIb族元素(例如B)代替AlN晶体中的一部分Al原子,获得低电阻n型AlN晶体 ,Ga和In),并且用氧(O)原子代替一个相邻的氮(N)原子以形成浅杂质水平。 特别地,IIIa族元素和/或IIIb族元素的总浓度(C 3A )优选为1×10 -3 SP / >以上,并且O浓度(Co)优选在0.01℃<3A> 的范围内。 作为制造AlN晶体的方法,可以采用CVD,MBE,升华法等众所周知的方法。 版权所有(C)2008,JPO&INPIT
    • 4. 发明专利
    • Ceramic sintered compact with metallized layer and its manufacturing method
    • 陶瓷烧结与金属层及其制造方法
    • JP2004237642A
    • 2004-08-26
    • JP2003030565
    • 2003-02-07
    • Sumitomo Electric Ind Ltd住友電気工業株式会社
    • HIROSE YOSHIYUKICHIKUNO TAKASHI
    • B28B11/00H05K3/26H05K3/40
    • PROBLEM TO BE SOLVED: To provide a ceramic sintered compact which is free from the generation of cracks in a via part or the ceramics around the via part in a ceramic substrate with the via part formed thereon, and a method for manufacturing this ceramic compact. SOLUTION: This method manufactures the ceramic sintered compact with a metallized layer by perforating a through hole in a ceramic green sheet composed mainly of a ceramic powder and simultaneously sintering the whole paste containing a metal powder and a solvent after filling the interior of the through hole with the paste. In this method, the ceramic sintered compact with a metallized layer is obtained by charging the paste into a process to dry the solvent of the paste within 20 minutes of the packing of the paste. The ceramic sintered compact is finished by grinding or polishing a manufactured sintered compact. COPYRIGHT: (C)2004,JPO&NCIPI
    • 要解决的问题:提供一种陶瓷烧结体,其在其上形成有通孔部分的陶瓷基板中的通孔部分或通孔部分周围的陶瓷中不产生裂纹,以及制造该陶瓷烧结体的方法 陶瓷结构。 解决方案:该方法通过在主要由陶瓷粉末组成的陶瓷生坯片中穿孔,同时在填充内部含有金属粉末和溶剂的整个糊料之后,对具有金属化层的陶瓷烧结体制造 通孔用糊。 在该方法中,具有金属化层的陶瓷烧结体通过将糊状物填充到糊料包装后20分钟内干燥糊剂的溶剂的工序而得到。 通过研磨或研磨制造的烧结体来完成陶瓷烧结体。 版权所有(C)2004,JPO&NCIPI
    • 7. 发明专利
    • Switching power supply
    • 切换电源
    • JP2012120278A
    • 2012-06-21
    • JP2010265959
    • 2010-11-30
    • Sumitomo Electric Ind Ltd住友電気工業株式会社
    • CHIKUNO TAKASHI
    • H02M3/155
    • H02M1/08H02M3/1588H02M7/5387H03K17/663H03K2217/0045Y02B70/1466
    • PROBLEM TO BE SOLVED: To solve the problem that high-speed driving of a switching power supply has limitation due to delay of a photocoupler.SOLUTION: In the switching power supply which includes a first transistor and a second transistor, the first transistor is connected to a positive electrode of a DC voltage generating source and the second transistor is connected to between the first transistor and a negative electrode of the DC voltage generating source, the first transistor and the second transistor are alternately conducted, a gate signal is applied to a gate terminal of the first transistor by using a voltage of the terminal of the first transistor connected to the positive electrode as a reference, a gate signal is applied to a gate terminal of the second transistor by using a voltage of the terminal of the second transistor connected to the negative electrode as a reference, and the first transistor and the second transistor include a wideband gap semiconductor formed of different materials.
    • 要解决的问题:为了解决由于光电耦合器的延迟而导致的开关电源的高速驱动的限制的问题。 解决方案:在包括第一晶体管和第二晶体管的开关电源中,第一晶体管连接到直流电压产生源的正极,第二晶体管连接到第一晶体管和负极之间 直流电压产生源,第一晶体管和第二晶体管交替导通,栅极信号通过​​使用连接到正极的第一晶体管的端子的电压作为参考而施加到第一晶体管的栅极端子 通过使用连接到负极的第二晶体管的端子的电压作为参考,将栅极信号施加到第二晶体管的栅极端子,并且第一晶体管和第二晶体管包括由不同的形成的宽带隙半导体 材料。 版权所有(C)2012,JPO&INPIT