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    • 12. 发明专利
    • SCHOTTKY BARRIER DIODE AND MANUFACTURE THEREOF
    • JPS63221668A
    • 1988-09-14
    • JP5594287
    • 1987-03-10
    • MITSUBISHI ELECTRIC CORP
    • YUYA NAOKI
    • H01L29/47H01L29/861H01L29/872
    • PURPOSE:To achieve the miniaturization of a Schottky barrier diode and to improve the accuracy of the diode by forming an annular second electrode around a first electrode on an insulating film. CONSTITUTION:A thin oxide film 4 and a thick oxide film 2 are formed on a semiconductor substrate 1 made of a P-type silicon substrate, and a channel stopper 3 made of a P type impurity diffused layer is formed under the film 2. Then, a polysilicon layer is formed on the films 2, 4, and patterned to form a polysilicon electrode 5 which planely becomes annular. When the film 4 exposed in the annular interior of the electrode 5 is, for example, removed by etching with solution of hydrogen fluoride or the like, the electrode 5 is not etched but performs as a mask, an opening 6 is formed to expose part of the substrate 1. When platinum or the like is then deposited by a depositing method or the like in the opening 6 on the substrate 1 and the electrode 5 and heat treated, a metal electrode 7a made of platinum silicide is formed on the substrate 1, and a metal electrode 7b made of platinum silicide is formed on the electrode 5. Then, unreacted platinum remaining on the oxide 2 is selectively removed by aqua regia. Thus, reverse dielectric strength is improved, a guard ring is eliminated, and a miniaturization is further improved.
    • 15. 发明专利
    • Manufacture of semiconductor device
    • 半导体器件的制造
    • JPS6165447A
    • 1986-04-04
    • JP18840284
    • 1984-09-07
    • Mitsubishi Electric Corp
    • HINE SHIROYAMAWAKI MASAOYUYA NAOKIUENO MASAFUMIYAMAKAWA SATOSHIKIMATA MASAAKI
    • H01L21/205H01L21/76
    • H01L21/76
    • PURPOSE:To obtain epitaxial layers uncovered with the second insulation films as active regions without defects, by a method wherein the second insulation film is formed on the surface in the neighborhood of the interface between the first insulation film by applying selective oxidation to the epitaxial layer formed after formation of the first insulation film. CONSTITUTION:The first insulation film 2 is formed on a substrate 1, and epitaxial layers 3 are formed on the surface of the substrate 1 in parts of removal of this film by using the selective epitaxial growing method. Selective oxide films 5 are formed on the surface in the neighborhood of interfaces between the second insulation films 2 by applying selective oxidation to the epitaxial layers 3. As a result, the epitaxial layers 3 whose surfaces are not covered with the oxide films 5 are formed as active regions. This manner prevents the cover of defective regions over the active regions and reduces the leakage current.
    • 目的:为了获得用第二绝缘膜未覆盖的外延层作为无缺陷的有源区,通过这样一种方法,其中第二绝缘膜通过向外延层施加选择性氧化而形成在第一绝缘膜之间的界面附近的表面上 在形成第一绝缘膜之后形成。 构成:在基板1上形成第一绝缘膜2,并且通过使用选择性外延生长方法去除该膜的部分,在基板1的表面上形成外延层3。 通过对外延层3施加选择性氧化,在第二绝缘膜2之间的界面附近的表面上形成选择性氧化物膜5.结果,形成表面未被氧化物膜5覆盖的外延层3 作为活跃区域。 通过这种方式防止有源区域上的缺陷区域覆盖,并且减少漏电流。
    • 17. 发明专利
    • INFRARED RAY IMAGE PICKUP DEVICE
    • JPS6014578A
    • 1985-01-25
    • JP12290483
    • 1983-07-04
    • MITSUBISHI ELECTRIC CORP
    • YUYA NAOKIDENDA MASAHIKO
    • H04N5/33
    • PURPOSE:To attain a small-sized, lightweight device at low power consumption and to improve the reliability by using plural infrared ray solidstate image pickup elements having different infrared ray spectral sensitivity characteristic so as to image pickup the same thermal ray image of an object thereby obtaining the temperature distribution and absolute temperature value of the object from a picture signal. CONSTITUTION:The infrared ray solid-state image pickup elements 10, 11 and 12 have different infrared ray spectral sensitivity characteristic from each other by infrared ray band pass filters 13, 14 and 15. Then a picture signal I1 of an infrared ray image having lambda1+ or -DELTAlambda1/2 is outputted to a signal processing circuit 16 from the infrared ray solid-state image pickup element 10, a picture signal I2 of the infrared ray image having lambda2+ or -DELTAlambda2 is outputted to the signal processing circuit 16 from the element 11 and a picture signal I3 of the infrared ray image having lambda3+ or -DELTAlambda3 is outputted to the signal processing circuit 16 from the element 12. The signal processing circuit 16 converts the picture signals I1, I2 and I3 outputted from the infrared ray solid-state image pickup elements 10, 11 and 12 into a picture signal I representing the temperature distribution of the object 50, a signal representing the absolute temperature T of the object 50 and a signal representing the radiation factor epsilon of the object 50 and outputs them.
    • 19. 发明专利
    • Method of manufacturing silicon carbide semiconductor device
    • 制造碳化硅半导体器件的方法
    • JP2013161805A
    • 2013-08-19
    • JP2012019760
    • 2012-02-01
    • Mitsubishi Electric Corp三菱電機株式会社
    • CHIKAMORI DAISUKENISHIO YASUHIKOYUYA NAOKI
    • H01L21/285C23C14/14C23C14/34C23C14/58H01L21/28H01L29/47H01L29/872
    • H01L29/872C23C14/185C23C14/3492C23C14/35H01J37/32082H01J37/34H01L21/0495H01L29/1608H01L29/47H01L29/6606
    • PROBLEM TO BE SOLVED: To provide a method of manufacturing a silicon carbide semiconductor device capable of suppressing damages generated at an interface between silicon carbide and metal when a metal material is sputtered to deposit a metal film on a silicon carbide substrate, and of manufacturing a silicon carbide semiconductor device having constant electric characteristics with stability.SOLUTION: A target 23 made of a metal material is sputtered to deposit a metal film on a silicon carbide substrate 10. At this time, the metal film is deposited on a condition that an incident energy to the silicon carbide substrate 10, of the metal material sputtered from the target 23 and a sputtering gas flowed in from a gas introduction port 27 is smaller than a binding energy of silicon carbide, in concrete terms, on a condition that the incident energy is smaller than 4.8 eV. For example, a high-frequency voltage applied between a cathode 21 and an anode 22 is set to be 20 V or more and 300 V or less to deposit the metal film.
    • 要解决的问题:提供一种制造碳化硅半导体器件的方法,其能够抑制当溅射金属材料以在碳化硅衬底上沉积金属膜时在碳化硅和金属之间的界面处产生的损伤,并且制造 具有稳定的电特性的碳化硅半导体器件。解决方案:溅射由金属材料制成的靶23,以在碳化硅衬底10上沉积金属膜。此时,金属膜以事件 从靶23溅射的金属材料和从气体导入口27流入的溅射气体的碳化硅衬底10的能量,具体而言小于碳化硅衬底10的入射能量 小于4.8 eV。 例如,施加在阴极21和阳极22之间的高频电压设定为20V以上且300V以下,以沉积金属膜。
    • 20. 发明专利
    • Silicon carbide semiconductor device
    • 硅碳化硅半导体器件
    • JP2013098316A
    • 2013-05-20
    • JP2011239016
    • 2011-10-31
    • Mitsubishi Electric Corp三菱電機株式会社
    • YUYA NAOKI
    • H01L27/04H01L21/822H01L21/8234H01L27/06H01L29/06H01L29/12H01L29/78
    • PROBLEM TO BE SOLVED: To provide a silicon carbide semiconductor device with a temperature sensor which can be formed with a small number of steps and has excellent heat resistance.SOLUTION: A silicon carbide semiconductor device comprises: a semiconductor element formed on an active region AR of a silicon carbide substrate 1; a well region 5 formed in the silicon carbide substrate 1 so as to surround the active region AR; a gate electrode 8 composed of polycrystalline silicon and disposed on the silicon carbide substrate 1; and a resistance temperature detector 17 formed simultaneously with the gate electrode 8 and formed using a part thereof.
    • 要解决的问题:为了提供具有能够以少量步骤形成并且具有优异的耐热性的温度传感器的碳化硅半导体器件。 解决方案:碳化硅半导体器件包括:形成在碳化硅衬底1的有源区域AR上的半导体元件; 形成在碳化硅衬底1中以围绕有源区域AR的阱区域5; 设置在碳化硅基板1上的由多晶硅构成的栅电极8; 以及与栅电极8同时形成并使用其一部分形成的电阻温度检测器17。 版权所有(C)2013,JPO&INPIT