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    • 8. 发明专利
    • METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE
    • JP2003203969A
    • 2003-07-18
    • JP2002001899
    • 2002-01-09
    • HITACHI LTDHITACHI ULSI SYS CO LTD
    • OTA HIROSHIHIRATA KOJIKIKAWA TAKESHI
    • H01L21/331H01L21/338H01L21/76H01L29/737H01L29/778H01L29/812
    • PROBLEM TO BE SOLVED: To solve the problem in the case of isolation of semiconductor elements, such as deterioration of characteristics due to deterioration in crystallinity, increase of leakage current due to contact of an active layer with electrode metal, and step cut of the electrode metal and wiring metal in a step difference part. SOLUTION: In a method for forming an active layer in an element part of a semiconductor wafer by using an ion implanting method or a diffusion method, or an element isolation method of a semiconductor element, by increasing electrical resistance of a part except an element part after the active layer is formed over the whole semiconductor wafer, this method for manufacturing a semiconductor device includes a process for forming the active layer on a semiconductor substrate, a process for forming a spacer layer for lift-off on an upper layer of the active layer, a process for anisotropically working the spacer layer, a process for working a semiconductor layer containing the active layer, by using the spacer layer or mask material for working the spacer layer as a mask, a process for directivity-depositing an insulating film on the spacer layer and on the entire surface of an exposed semiconductor layer, and a process for eliminating the spacer layer, by using an etching agent for etching and eliminating only the spacer layer. COPYRIGHT: (C)2003,JPO