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    • 6. 发明申请
    • Field effect trench transistor
    • 场效应沟槽晶体管
    • US20060071276A1
    • 2006-04-06
    • US11230705
    • 2005-09-20
    • Markus ZundelNorbert KrischkeThorsten Meyer
    • Markus ZundelNorbert KrischkeThorsten Meyer
    • H01L23/62
    • H01L29/7808H01L27/0255H01L29/0696H01L29/7813H01L29/866
    • One embodiment of the invention relates to a field effect trench transistor with a multiplicity of transistor cells that are arranged like an array and whose gate electrodes are arranged in active trenches formed in a semiconductor body. Inactive trenches are arranged in the array of the transistor cells, there being no gate electrodes situated in said inactive trenches, and a series of polysilicon diodes are integrated in one or more of the inactive trenches which diodes, for protection against damage to the gate oxide through ESD pulses, are contact-connected to a source metallization at one of their ends and to a gate metallization at their other end, and/or alternatively or additionally one or more polysilicon zener diodes connected in series is or are integrated in the inactive trench or trenches and contact-connected to the gate metallization by one of its or their ends and to drain potential by its or their other end.
    • 本发明的一个实施例涉及具有多个晶体管单元的场效应沟槽晶体管,其排列成阵列并且其栅电极被布置在形成于半导体本体中的有源沟槽中。 在晶体管单元的阵列中布置非活性沟槽,不存在位于所述非活性沟槽中的栅电极,并且一系列多晶硅二极管集成在一个或多个非活性沟槽中,这些二极管用于防止对栅极氧化物的损伤 通过ESD脉冲,在它们的一端处的源极金属化和其另一端的栅极金属化接触连接,和/或可选地或另外地一个或多个串联连接的多晶硅齐纳二极管被集成在非活性沟槽中 或沟槽,并且通过其端点之一与栅极金属化接触连接,并通过其或其另一端漏极电位。