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    • 1. 发明授权
    • Process of making field effect transistor having improved threshold
stability by ion-implantation
    • 通过离子注入制造具有改善的阈值稳定性的场效应晶体管的工艺
    • US4154626A
    • 1979-05-15
    • US881095
    • 1978-02-24
    • Richard C. JoyIngrid E. MagdoAlfred Phillips, Jr.
    • Richard C. JoyIngrid E. MagdoAlfred Phillips, Jr.
    • H01L21/331H01L29/73H01L29/78H01L21/20H01L21/263
    • H01L29/7836Y10S148/053Y10S148/167
    • An improved field effect transistor device in a monocrystalline semiconductor body provided with source and drain regions and a gate electrode disposed over the channel between the source and drain regions wherein at least the drain region is formed of a first region where the impurity concentration increases with depth with the peak concentration being spaced inwardly from the major surface, and a second region located within the first region having a peak impurity concentration at the major surface. The drain region structure in operation promotes the current flow between the source and drain to flow deeper in the channel region and spaced from the gate dielectric layer.In the method for forming the field effect transistor, an impurity is introduced into the semiconductor body underlying at least the ultimate drain region, an epitaxial semiconductor layer deposited, and a second impurity region formed over the first region to form the drain contact.In an alternate embodiment of the method for forming a field effect transistor, a first ion implantation is formed in the drain region, such that the peak impurity concentration is located well within the body spaced from the surface thereof, and a second ion implantation, or diffusion, performed forming the source and also the ohmic contact for the drain which is located over the first region and within the first implanted region.
    • 设置有源极和漏极区域的单晶体半导体本体中的改进的场效应晶体管器件和设置在源极和漏极区域之间的沟道上的栅极电极,其中至少漏极区域由杂质浓度随深度增加的第一区域形成 峰值浓度与主表面向内间隔开,并且位于第一区域内的第二区域在主表面具有峰值杂质浓度。 在操作中的漏极区域结构促使源极和漏极之间的电流流动在沟道区域中更深地流动并且与栅极介电层间隔开。
    • 2. 发明授权
    • Field effect transistor having improved threshold stability
    • 具有改善的阈值稳定性的场效应晶体管
    • US4028717A
    • 1977-06-07
    • US615251
    • 1975-09-22
    • Richard C. JoyIngrid E. MagdoAlfred Phillips, Jr.
    • Richard C. JoyIngrid E. MagdoAlfred Phillips, Jr.
    • H01L21/331H01L29/73H01L29/78
    • H01L29/7836Y10S148/053Y10S148/167
    • An improved field effect transistor device in a monocrystalline semiconductor body provided with source and drain regions and a gate electrode disposed over the channel between the source and drain regions wherein at least the drain region is formed of a first region where the impurity concentration increases with depth with the peak concentration being spaced inwardly from the major surface, and a second region located within the first region having a peak impurity concentration at the major surface. The drain region structure in operation promotes the current flow between the source and drain to flow deeper in the channel region and spaced from the gate dielectric layer.In the method for forming the field effect transistor, an impurity is introduced into the semiconductor body underlying at least the ultimate drain region, an epitaxial semiconductor layer deposited, and a second impurity region formed over the first region to form the drain contact.In an alternate embodiment of the method for forming a field effect transistor, a first ion implantation is formed in the drain region, such that the peak impurity concentration is located well within the body spaced from the surface thereof, and a second ion implantation, or diffusion, performed forming the source and also the ohmic contact for the drain which is located over the first region and within the first implanted region.
    • 设置有源极和漏极区域的单晶体半导体本体中的改进的场效应晶体管器件和设置在源极和漏极区域之间的沟道上的栅极电极,其中至少漏极区域由杂质浓度随深度增加的第一区域形成 峰值浓度与主表面向内间隔开,并且位于第一区域内的第二区域在主表面具有峰值杂质浓度。 在操作中的漏极区域结构促使源极和漏极之间的电流流动在沟道区域中更深地流动并且与栅极介电层间隔开。
    • 6. 发明授权
    • Epitaxial process for the fabrication of a field effect transistor
having improved threshold stability
    • 用于制造具有改进的阈值稳定性的场效应晶体管的外延工艺
    • US4089712A
    • 1978-05-16
    • US797895
    • 1977-05-17
    • Richard C. JoyIngrid E. MagdoAlfred Phillips, Jr.
    • Richard C. JoyIngrid E. MagdoAlfred Phillips, Jr.
    • H01L21/331H01L29/73H01L29/78H01L21/20
    • H01L29/7836Y10S148/053Y10S148/167
    • An improved field effect transistor device in a monocrystalline semiconductor body provided with source and drain regions and a gate electrode disposed over the channel between the source and drain regions wherein at least the drain region is formed of a first region where the impurity concentration increases with depth with the peak concentration being spaced inwardly from the major surface, and a second region located within the first region having a peak impurity concentration at the major surface. The drain region structure in operation promotes the current flow between the source and drain to flow deeper in the channel region and spaced from the gate dielectric layer.In the method for forming the field effect transistor, an impurity is introduced into the semiconductor body underlying at least the ultimate drain region, an epitaxial semiconductor layer deposited, and a second impurity region formed over the first region to form the drain contact.In an alternate embodiment of the method for forming a field effect transistor, a first ion implantation is formed in the drain region, such that the peak impurity concentration is located well within the body spaced from the surface thereof, and a second ion implantation, or diffusion, performed forming the source and also the ohmic contact for the drain which is located over the first region and within the first implanted region.
    • 设置有源极和漏极区域的单晶体半导体本体中的改进的场效应晶体管器件和设置在源极和漏极区域之间的沟道上的栅极电极,其中至少漏极区域由杂质浓度随深度增加的第一区域形成 峰值浓度与主表面向内间隔开,并且位于第一区域内的第二区域在主表面具有峰值杂质浓度。 在操作中的漏极区域结构促使源极和漏极之间的电流流动在沟道区域中更深地流动并且与栅极介电层间隔开。