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公开(公告)号:US5541132A
公开(公告)日:1996-07-30
申请号:US408653
申请日:1995-03-21
申请人: Robert B. Davies , Vida Ilderem , Mark D. Griswold , Diann Dow , James E. Prendergast , Iksung Lim , Juan Buxo , Richard D. Sivan , James D. Burnett , Frank K. Baker
发明人: Robert B. Davies , Vida Ilderem , Mark D. Griswold , Diann Dow , James E. Prendergast , Iksung Lim , Juan Buxo , Richard D. Sivan , James D. Burnett , Frank K. Baker
IPC分类号: H01L21/336 , H01L21/8238 , H01L27/092 , H01L29/10 , H01L29/423 , H01L21/265
CPC分类号: H01L29/66659 , H01L21/823814 , H01L21/823828 , H01L21/823857 , H01L21/823864 , H01L27/092 , H01L29/1045 , H01L29/1083 , H01L29/42368 , Y10S438/981
摘要: An insulated gate field effect transistor (10) having an reduced gate to drain capacitance and a method of manufacturing the field effect transistor (10). A dopant well (13) is formed in a semiconductor material (11). A gate oxide layer (26) is formed on the dopant well (13) wherein the gate oxide layer (26) and a gate structure (41) having a gate contact portion (43) and a gate extension portion (44). The gate contact portion (43) permits electrical contact to the gate structure (41), whereas the gate extension portion (44) serves as the active gate portion. A portion of the gate oxide (26) adjacent the gate contact portion (43) is thickened to lower a gate to drain capacitance of the field effect transistor (10) and thereby increase a bandwidth of the insulated gate field effect transistor (10).
摘要翻译: 具有减小的栅极 - 漏极电容的绝缘栅场效应晶体管(10)和制造场效应晶体管(10)的方法。 掺杂剂阱(13)形成在半导体材料(11)中。 栅极氧化物层(26)形成在掺杂剂阱(13)上,其中栅极氧化物层(26)和具有栅极接触部分(43)和栅极延伸部分(44)的栅极结构(41)。 栅极接触部分(43)允许与栅极结构(41)的电接触,而栅极延伸部分(44)用作有源栅极部分。 与栅极接触部分(43)相邻的栅极氧化物(26)的一部分被加厚以降低场效应晶体管(10)的栅极到漏极电容,从而增加绝缘栅极场效应晶体管(10)的带宽。