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    • 52. 发明授权
    • Method of manufacturing a MOSFET structure
    • 制造MOSFET结构的方法
    • US07687336B2
    • 2010-03-30
    • US12058507
    • 2008-03-28
    • James D. Beasom
    • James D. Beasom
    • H01L21/337
    • H01L29/0847H01L29/0615H01L29/0619H01L29/0634H01L29/0696H01L29/402H01L29/66659H01L29/735H01L29/7835H01L29/8611H01L2924/0002H03K17/941H01L2924/00
    • A method of forming a MOSFET is provided. The method comprises forming a relatively thin layer of dielectric on a substrate. Depositing a gate material layer on the relatively thin layer of dielectric. Removing portions of the gate material layer to form a first and second gate material regions of predetermined lateral lengths. Introducing a first conductivity type dopant in the substrate to form a top gate using first edges of the first and second gate material regions as masks, Introducing a second conductivity dopant of high dopant density in the substrate to form a drain region adjacent the surface of the substrate using a second edge of the second gate material region as a mask to form a first edge of the drain region, wherein a spaced distance between the top gate and the drain region is determined by the lateral length of the second gate material region.
    • 提供一种形成MOSFET的方法。 该方法包括在衬底上形成相当薄的电介质层。 在较薄的电介质层上沉积栅极材料层。 去除栅极材料层的部分以形成具有预定横向长度的第一和第二栅极材料区域。 在衬底中引入第一导电型掺杂剂,以使用第一和第二栅极材料区域的第一边缘作为掩模形成顶栅极;在衬底中引入高掺杂物密度的第二导电掺杂剂,以形成邻近 使用第二栅极材料区域的第二边缘作为掩模以形成漏极区域的第一边缘的衬底,其中顶部栅极和漏极区域之间的间隔距离由第二栅极材料区域的横向长度确定。
    • 53. 发明授权
    • JFET with built in back gate in either SOI or bulk silicon
    • JFET内置在SOI或体硅中的背栅
    • US07645654B2
    • 2010-01-12
    • US12270964
    • 2008-11-14
    • Madhukar B. Vora
    • Madhukar B. Vora
    • H01L21/337
    • H01L29/42316H01L29/1066H01L29/66901H01L29/808
    • A process for manufacturing a Junction Field-Effect Transistor, comprises doping a semiconductor material formed on an insulating substrate with impurities of a first conductivity type to form a well region. The process continues by implanting impurities of a second conductivity type into said well region to form a channel region, and by implanting impurities of the first conductivity type in said well region to form a back gate region. The process continues by forming a trench to expose at least one sidewall of said channel region, wherein the trench extends far enough along the sidewall to expose at least a portion of said back gate region. The process continues by depositing polysilicon to fill said trench along the at least one sidewall of said channel region and at least a portion of said back gate region, wherein at least a portion of the polysilicon will form a gate contact. The polysilicon is then doped with impurities of a first conductivity type. The process concludes by annealing the polysilicon to activate the doped impurities and to cause the doped impurities to diffuse along the at least one sidewall of said channel region so as to form a top gate region. The top gate region extends far enough to make electrical contact with said back gate region.
    • 一种用于制造结型场效应晶体管的工艺,包括用绝缘衬底上形成的具有第一导电类型杂质的半导体材料掺杂以形成阱区。 该过程通过将第二导电类型的杂质注入到所述阱区中以形成沟道区,并且通过在所述阱区中注入第一导电类型的杂质以形成背栅区而继续。 该过程通过形成沟槽以暴露所述沟道区域的至少一个侧壁而继续,其中沟槽沿着侧壁延伸足够远以露出所述背栅区域的至少一部分。 该过程通过沉积多晶硅来沿着所述沟道区的至少一个侧壁和所述背栅区的至少一部分沉积多晶硅,其中多晶硅的至少一部分将形成栅极接触。 然后,多晶硅掺杂有第一导电类型的杂质。 该过程通过退火多晶硅来终止激活掺杂杂质并使掺杂的杂质沿着所述沟道区的至少一个侧壁扩散,从而形成顶栅区。 顶栅区延伸得足够远以与所述背栅区电接触。
    • 54. 发明授权
    • LDMOS with channel stress
    • LDMOS具有通道压力
    • US07645651B2
    • 2010-01-12
    • US11951702
    • 2007-12-06
    • Xiaoqiu HuangVeeraraghavan DhandapaniBich-Yen NguyenAmanda M. KrollDaniel T. Pham
    • Xiaoqiu HuangVeeraraghavan DhandapaniBich-Yen NguyenAmanda M. KrollDaniel T. Pham
    • H01L21/00H01L21/84H01L21/337H01L21/8238H01L21/8236H01L21/336
    • H01L29/7835H01L29/1054H01L29/161H01L29/165H01L29/66659H01L29/7781
    • A method of forming a metal oxide semiconductor (MOS) device comprises defining an active area in an unstrained semiconductor layer structure, depositing a hard mask overlying the active area and a region outside of the active area, patterning the hard mask to expose the active area, selectively growing a strained semiconductor layer overlying the exposed active area, and forming a remainder of the MOS device. The active area includes a first doped region of first conductivity type and a second doped region of second conductivity type. The strained semiconductor layer provides a biaxially strained channel for the MOS device. During a portion of forming the remainder of the MOS device, dopant of the first conductivity type of the first doped region of the active area and dopant of the second conductivity type of the second doped region of the active area diffuses into overlying portions of the strained semiconductor layer to create a correspondingly doped strained semiconductor layer, thereby providing corresponding doping for the biaxially strained channel.
    • 一种形成金属氧化物半导体(MOS)器件的方法包括:在非限制性半导体层结构中限定有源区,沉积覆盖有源区的硬掩模和有源区外的区域,使硬掩模图形化以暴露有源区 选择性地生长覆盖暴露的有源区的应变半导体层,以及形成MOS器件的其余部分。 有源区包括第一导电类型的第一掺杂区和第二导电类型的第二掺杂区。 应变半导体层为MOS器件提供双向应变通道。 在形成MOS器件的其余部分的部分期间,有源区的第一掺杂区的第一导电类型的掺杂剂和有源区的第二掺杂区的第二导电类型的掺杂剂扩散到应变的上覆部分 以产生相应掺杂的应变半导体层,从而为双轴应变通道提供相应的掺杂。
    • 58. 发明授权
    • Method of manufacturing semiconductor device, and semiconductor device
    • 制造半导体器件的方法和半导体器件
    • US07510925B2
    • 2009-03-31
    • US11739792
    • 2007-04-25
    • Yuki Miyanami
    • Yuki Miyanami
    • H01L21/337H01L21/8234H01L21/8238
    • H01L29/7834H01L29/165H01L29/66628H01L29/66636H01L29/7848
    • A method of manufacturing a semiconductor device includes: the first step of forming a gate electrode over a silicon substrate, with a gate insulating film; and the second step of digging down a surface layer of the silicon substrate by etching conducted with the gate electrode as a mask. The method of manufacturing the semiconductor device further includes the third step of epitaxially growing, on the surface of the dug-down portion of the silicon substrate, a mixed crystal layer including silicon and atoms different in lattice constant from silicon so that the mixed crystal layer contains an impurity with such a concentration gradient that the impurity concentration increases along the direction from the silicon substrate side toward the surface of the mixed crystal layer.
    • 一种制造半导体器件的方法包括:第一步骤,在栅极绝缘膜上形成在硅衬底上的栅电极; 以及通过用栅电极作为掩模进行的蚀刻来挖掘硅衬底的表面层的第二步骤。 制造半导体器件的方法还包括在硅衬底的下陷部分的表面上外延生长包含硅和晶格常数不同于硅的原子的混合晶体层的第三步骤,使得混合晶体层 含有这样的浓度梯度的杂质,杂质浓度沿着从硅衬底侧朝向混晶层的表面的方向增加。
    • 59. 发明申请
    • JFET With Built In Back Gate in Either SOI or Bulk Silicon
    • 具有内置背栅的JFET或SOI
    • US20090075435A1
    • 2009-03-19
    • US12270964
    • 2008-11-14
    • Madhukar B. Vora
    • Madhukar B. Vora
    • H01L21/337
    • H01L29/42316H01L29/1066H01L29/66901H01L29/808
    • A process for manufacturing a Junction Field-Effect Transistor, comprises doping a semiconductor material formed on an insulating substrate with impurities of a first conductivity type to form a well region. The process continues by implanting impurities of a second conductivity type into said well region to form a channel region, and by implanting impurities of the first conductivity type in said well region to form a back gate region. The process continues by forming a trench to expose at least one sidewall of said channel region, wherein the trench extends far enough along the sidewall to expose at least a portion of said back gate region. The process continues by depositing polysilicon to fill said trench along the at least one sidewall of said channel region and at least a portion of said back gate region, wherein at least a portion of the polysilicon will form a gate contact. The polysilicon is then doped with impurities of a first conductivity type. The process concludes by annealing the polysilicon to activate the doped impurities and to cause the doped impurities to diffuse along the at least one sidewall of said channel region so as to form a top gate region. The top gate region extends far enough to make electrical contact with said back gate region.
    • 一种用于制造结型场效应晶体管的工艺,包括用绝缘衬底上形成的具有第一导电类型杂质的半导体材料掺杂以形成阱区。 该过程通过将第二导电类型的杂质注入到所述阱区中以形成沟道区,并且通过在所述阱区中注入第一导电类型的杂质以形成背栅区而继续。 该过程通过形成沟槽以暴露所述沟道区域的至少一个侧壁而继续,其中沟槽沿着侧壁延伸足够远以露出所述背栅区域的至少一部分。 该过程通过沉积多晶硅以沿着所述沟道区的至少一个侧壁和所述背栅区的至少一部分沉积所述沟槽继续,其中多晶硅的至少一部分将形成栅极接触。 然后,多晶硅掺杂有第一导电类型的杂质。 该过程通过退火多晶硅来终止激活掺杂杂质并使掺杂的杂质沿着所述沟道区的至少一个侧壁扩散,从而形成顶栅区。 顶栅区延伸得足够远以与所述背栅区电接触。