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    • 77. 发明授权
    • Method of making alternative to dual gate oxide for MOSFETs
    • 制造用于MOSFET的双栅极氧化物的替代方法
    • US06362056B1
    • 2002-03-26
    • US09511567
    • 2000-02-23
    • William R. TontiJack A. Mandelman
    • William R. TontiJack A. Mandelman
    • H01L218234
    • H01L21/82345
    • A method for forming depleted conductor regions in MOSFET arrays includes the steps of preparing a substrate, forming a conductor layer on the substrate, implanting a dopant species into the conductor layer, masking portions of the doped conductor layer, and counterdoping unmasked portions of the doped conductor layer to form said depleted conductor regions on the substrate. This method provides an alternative to dual gate oxide for MOSFETS wherein low voltage regions at doped layers are used for support devices and high voltage regions at counterdoped portions are used for memory arrays such as DRAM, EDRAM, SRAM and NVRAM. This method is also applicable for all chips requiring high and low voltage integral device operation.
    • 用于在MOSFET阵列中形成耗尽导体区域的方法包括以下步骤:制备衬底,在衬底上形成导体层,将掺杂物种类注入导体层,掺杂导体层的掩模部分和掺杂的掺杂物的未掺杂部分 导体层以在衬底上形成所述耗尽导体区域。 该方法提供了用于MOSFET的双栅极氧化物的替代方案,其中在掺杂层处的低电压区域用于支撑器件,并且在反向掺杂部分处的高电压区域用于诸如DRAM,EDRAM,SRAM和NVRAM的存储器阵列。 该方法也适用于需要高,低电压一体化器件工作的所有芯片。
    • 78. 发明授权
    • Structure and method for dual gate oxidation for CMOS technology
    • 用于CMOS技术的双栅极氧化的结构和方法
    • US06344383B1
    • 2002-02-05
    • US09421853
    • 1999-10-20
    • Wayne S. BerryJeffrey P. GambinoJack A. MandelmanWilliam R. Tonti
    • Wayne S. BerryJeffrey P. GambinoJack A. MandelmanWilliam R. Tonti
    • H01L218238
    • H01L21/823481H01L21/76224H01L21/823462
    • The present invention provides an integrated circuit which comprises a substrate having a plurality of device regions formed therein, said plurality of device regions being electrically isolated from each other by shallow trench isolation (STI) regions and said plurality of device regions each having opposing edges abutting its corresponding STI region; selected ones of said devices regions having a preselected first device width such that an oxide layer formed thereon includes substantially thicker perimeter regions, along said opposing edges, compared to a thinner central region that does not abut its corresponding STI region; and selected other ones of the device regions having a preselected device width substantially narrower in width than the first device width such that an oxide layer formed thereon includes perimeter regions, along opposing edges, that abut each other over its central region thereby preventing formation of a corresponding thinner central region.
    • 本发明提供一种集成电路,其包括其中形成有多个器件区的衬底,所述多个器件区通过浅沟槽隔离(STI)区域彼此电隔离,并且所述多个器件区域各自具有相对的边缘邻接 其对应的STI区域; 所选择的所述器件区域具有预先选择的第一器件宽度,使得形成在其上的氧化物层与不相邻其对应的STI区的较薄的中心区域相比,沿着所述相对的边缘包括基本上较厚的周边区域; 以及选定的其它器件区域具有基本上比第一器件宽度窄的宽度的预选器件宽度,使得形成在其上的氧化物层包括沿相对边缘的周边区域,该周边区域在其中心区域上彼此邻接,从而防止形成 相应较薄的中心区域。