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    • 3. 发明专利
    • Method for manufacturing silicon carbide semiconductor device
    • 制造碳化硅半导体器件的方法
    • JP2011187675A
    • 2011-09-22
    • JP2010051371
    • 2010-03-09
    • Mitsubishi Electric Corp三菱電機株式会社
    • UDA YUKIOSEKIYA KOICHIKOBAYASHI KAZUOTARUI YOICHIRO
    • H01L21/205C23C16/26H01L21/265H01L21/336H01L29/12H01L29/78
    • C23C16/325C23C16/56H01L21/046H01L22/12H01L29/0657H01L29/1608H01L29/66068H01L29/7802Y10S438/931
    • PROBLEM TO BE SOLVED: To provide a manufacturing method capable of carrying out, with high accuracy and at low cost, the film thickness measurement of a protecting film which prevents the evaporation of silicon and carbon in annealing treatment in a method for manufacturing a silicon carbide semiconductor device. SOLUTION: A wafer WF is laid on a substrate holder 35 and then placed in a film formation furnace 32, the inside of the film formation furnace 32 is evacuated by a vacuum pump through a gas exhaust portion 33, after removing remaining oxygen as much as possible, a temperature in the film formation furnace 32 is heated in a range of 800-950°C under reduced pressure while introducing inert gas such as Ar, helium (He) through a gas introduction portion 31. When the furnace reaches the temperature, by stopping the inflow of the inert gas and then introducing evaporated ethanol as source gas into the film formation furnace 32 through the gas introduction portion 31, a graphite film is deposited on the whole surface of the wafer WF. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种能够以高精度和低成本执行在制造方法中防止退火处理中的硅和碳的蒸发的保护膜的膜厚度测量的制造方法 碳化硅半导体器件。 解决方案:将晶片WF放置在基板保持器35上,然后放置在成膜炉32中,在除去剩余的氧气之后,成膜炉32的内部通过真空泵通过排气部分33抽真空 尽可能地将成膜炉32中的温度在减压下在800-950℃的范围内加热,同时通过气体引入部分31引入诸如Ar,氦(He)的惰性气体。当炉到达时 通过停止惰性气体的流入,然后通过气体引入部分31将蒸发的乙醇作为源气体引入成膜炉32中,在晶片WF的整个表面上沉积石墨膜。 版权所有(C)2011,JPO&INPIT