Method for forming structures in finfet devices
    12.
    发明授权
    Method for forming structures in finfet devices 有权
    在finfet装置中形成结构的方法

    公开(公告)号:US06852576B2

    公开(公告)日:2005-02-08

    申请号:US10825175

    申请日:2004-04-16

    摘要: A method forms fin structures for a semiconductor device. The method includes forming a first fin structure including a dielectric material and including a first side surface and a second side surface; forming a second fin structure adjacent the first side surface of the first fin structure; and forming a third fin structure adjacent the second side surface of the first fin structure. The second fin structure and the third fin structure are formed of a different material than the first fin structure.

    摘要翻译: 一种形成半导体器件的鳍结构的方法。 该方法包括形成包括电介质材料并包括第一侧表面和第二侧表面的第一鳍结构; 在所述第一翅片结构的第一侧表面附近形成第二鳍结构; 以及在所述第一翅片结构的所述第二侧表面附近形成第三鳍​​结构。 第二翅片结构和第三翅片结构由与第一翅片结构不同的材料形成。

    Fast Mosfet with low-doped source/drain
    15.
    发明授权
    Fast Mosfet with low-doped source/drain 有权
    具有低掺杂源/漏极的快速Mosfet

    公开(公告)号:US06060364A

    公开(公告)日:2000-05-09

    申请号:US260880

    申请日:1999-03-02

    摘要: A method (100) of forming a transistor (50, 80) includes forming a gate oxide (120) over a portion of a semiconductor material (56, 122) and forming a doped polysilicon film (124) having a dopant concentration over the gate oxide (122). Subsequently, the doped polysilicon film (124) is etched to form a gate electrode (52) overlying a channel region (58) in the semiconductor material (56, 122), wherein the gate electrode (52) separates the semiconductor material into a first region (60) and a second region (68) having the channel region (58) therebetween. The method (100) further includes forming a drain extension region (64) in the first region (60) and a source extension region (72) in the second region (68), and forming a drain region (62) in the first region (60) and a source region (70) in the second region (68). The source/drain formation is such that the drain and source regions (62, 70) have a dopant concentration which is less than the polysilicon film (124) doping concentration. The lower doping concentration in the source/drain regions (62, 70) lowers the junction capacitance and provides improved control of floating body effects when employed in SOI type processes.

    摘要翻译: 形成晶体管(50,80)的方法(100)包括在半导体材料(56,122)的一部分上形成栅极氧化物(120),并形成掺杂浓度超过栅极的掺杂多晶硅膜(124) 氧化物(122)。 随后,蚀刻掺杂多晶硅膜(124)以形成覆盖半导体材料(56,122)中的沟道区域(58)的栅电极(52),其中栅电极(52)将半导体材料分离成第一 区域(60)和在其间具有沟道区(58)的第二区域(68)。 方法(100)还包括在第一区域(60)中形成漏极延伸区域(64)和在第二区域(68)中形成源极延伸区域(72),并且在第一区域 (60)和第二区域(68)中的源极区域(70)。 源极/漏极形成使得漏极和源极区域(62,70)具有小于多晶硅膜(124)掺杂浓度的掺杂剂浓度。 源极/漏极区域(62,70)中的较低掺杂浓度降低了结电容,并且当用于SOI类型工艺时,提供对浮体效应的改进的控制。

    Method for and device having STI using partial etch trench bottom liner
    16.
    发明授权
    Method for and device having STI using partial etch trench bottom liner 有权
    使用局部蚀刻槽底衬的STI和器件的方法

    公开(公告)号:US06486038B1

    公开(公告)日:2002-11-26

    申请号:US09804360

    申请日:2001-03-12

    IPC分类号: H01L2176

    CPC分类号: H01L21/76264 H01L21/76283

    摘要: A method of isolation of active islands on a silicon-on-insulator semiconductor device, comprising the steps of (a) providing a silicon-on-insulator semiconductor wafer having a silicon active layer, a dielectric isolation layer and a silicon substrate, in which the silicon active layer is formed on the dielectric isolation layer and the dielectric isolation layer is formed on the silicon substrate; (b) etching the silicon active layer to form an isolation trench wherein an unetched silicon layer at bottom of the isolation trench remains; (c) oxidizing the layer of silicon at the bottom of the isolation trench to a degree sufficient to oxidize through the layer of silicon at the bottom to the dielectric isolation layer; and (d) filling the isolation trench with a trench isolation material to form a shallow trench isolation structure.

    摘要翻译: 一种隔离绝缘体上半导体器件上的有源岛的方法,包括以下步骤:(a)提供具有硅有源层,介电隔离层和硅衬底的绝缘体上硅半导体晶片,其中 在介电隔离层上形成硅有源层,并在硅衬底上形成电介质隔离层; (b)蚀刻硅有源层以形成隔离沟槽,其中保留隔离沟槽底部的未蚀刻硅层; (c)将隔离沟槽的底部的硅层氧化至足以通过底部的硅层氧化成电介质隔离层的程度; 和(d)用沟槽隔离材料填充隔离沟槽以形成浅沟槽隔离结构。

    Fast MOSFET with low-doped source/drain
    17.
    发明授权
    Fast MOSFET with low-doped source/drain 有权
    具有低掺杂源极/漏极的快速MOSFET

    公开(公告)号:US06238960B1

    公开(公告)日:2001-05-29

    申请号:US09483400

    申请日:2000-01-14

    IPC分类号: H01L21336

    摘要: A method (100) of forming a transistor (50, 80) includes forming a gate oxide (120) over a portion of a semiconductor material (56, 122) and forming a doped polysilicon film (124) having a dopant concentration over the gate oxide (122). Subsequently, the doped polysilicon film (124) is etched to form a gate electrode (52) overlying a channel region (58) in the semiconductor material (56, 122), wherein the gate electrode (52) separates the semiconductor material into a first region (60) and a second region (68) having the channel region (58) therebetween. The method (100) further includes forming a drain extension region (64) in the first region (60) and a source extension region (72) in the second region (68), and forming a drain region (62) in the first region (60) and a source region (70) in the second region (68). The source/drain formation is such that the drain and source regions (62, 70) have a dopant concentration which is less than the polysilicon film (124) doping concentration. The lower doping concentration in the source/drain regions (62, 70) lowers the junction capacitance and provides improved control of floating body effects when employed in SOI type processes.

    摘要翻译: 形成晶体管(50,80)的方法(100)包括在半导体材料(56,122)的一部分上形成栅极氧化物(120),并形成掺杂浓度超过栅极的掺杂多晶硅膜(124) 氧化物(122)。 随后,蚀刻掺杂多晶硅膜(124)以形成覆盖半导体材料(56,122)中的沟道区域(58)的栅电极(52),其中栅电极(52)将半导体材料分离成第一 区域(60)和在其间具有沟道区(58)的第二区域(68)。 方法(100)还包括在第一区域(60)中形成漏极延伸区域(64)和在第二区域(68)中形成源极延伸区域(72),并且在第一区域 (60)和第二区域(68)中的源极区域(70)。 源极/漏极形成使得漏极和源极区域(62,70)具有小于多晶硅膜(124)掺杂浓度的掺杂剂浓度。 源极/漏极区域(62,70)中的较低掺杂浓度降低了结电容,并且当用于SOI类型工艺时,提供对浮体效应的改进的控制。

    Method for fabricating a MOSFET device structure which facilitates mitigation of junction capacitance and floating body effects
    18.
    发明授权
    Method for fabricating a MOSFET device structure which facilitates mitigation of junction capacitance and floating body effects 有权
    制造MOSFET器件结构的方法,其有助于缓解结电容和浮体效应

    公开(公告)号:US06204138B1

    公开(公告)日:2001-03-20

    申请号:US09260821

    申请日:1999-03-02

    IPC分类号: H01L21336

    CPC分类号: H01L29/78612 H01L29/78621

    摘要: A method of forming a MOSFET device is provided. First lightly doped regions are formed, the first lightly doped regions including LDD extension regions of the device. Second very lightly doped regions are formed at least partially below the first lightly doped regions, respectively, the second very lightly doped regions having a dopant concentration less than the first lightly doped regions, and the second very lightly doped regions being implanted at a higher energy level than the first lightly doped regions.

    摘要翻译: 提供了一种形成MOSFET器件的方法。 形成第一轻掺杂区域,第一轻掺杂区域包括器件的LDD延伸区域。 第二非常轻掺杂的区域至少部分地形成在第一轻掺杂区域的下方,第二非常轻掺杂的区域具有小于第一轻掺杂区域的掺杂剂浓度,并且第二极轻掺杂区域以较高能量 水平比第一轻掺杂区域。