Process method to optimize fully silicided gate (FUSI) thru PAI implant
    11.
    发明申请
    Process method to optimize fully silicided gate (FUSI) thru PAI implant 审中-公开
    通过PAI植入物优化完全硅化栅(FUSI)的工艺方法

    公开(公告)号:US20080206973A1

    公开(公告)日:2008-08-28

    申请号:US11710769

    申请日:2007-02-26

    IPC分类号: H01L21/3205

    摘要: An improved method of forming a fully silicided (FUSI) gate in both NMOS and PMOS transistors of the same MOS device is disclosed. In one example, the method comprises forming oxide and nitride etch-stop layers over a top portion of the gates of the NMOS and PMOS transistors, forming a blocking layer over the etch-stop layer, planarizing the blocking layer down to the etch-stop layer over the gates, and removing a portion of the etch-stop layer overlying the gates. The method further includes implanting a preamorphizing species into the exposed gates to amorphize the gates, thereby permitting uniform silicide formation thereafter at substantially the same rates in the NMOS and PMOS transistors. The method may further comprise removing any remaining oxide or blocking layers, forming the gate silicide over the gates to form the FUSI gates, and forming source/drain silicide in moat areas of the NMOS and PMOS transistors.

    摘要翻译: 公开了在相同MOS器件的NMOS和PMOS晶体管中形成完全硅化(FUSI)栅极的改进方法。 在一个示例中,该方法包括在NMOS和PMOS晶体管的栅极的顶部部分上形成氧化物和氮化物蚀刻停止层,在蚀刻停止层上形成阻挡层,将阻挡层平坦化到蚀刻停止 并且去除覆盖在栅极上的蚀刻停止层的一部分。 该方法还包括将预变质物质注入到暴露的栅极中以使栅极非晶化,从而在NMOS和PMOS晶体管中以基本上相同的速率允许均匀的硅化物形成。 该方法还可以包括去除任何剩余的氧化物或阻挡层,在栅极上形成栅极硅化物以形成FUSI栅极,以及在NMOS和PMOS晶体管的护环区域中形成源极/漏极硅化物。

    Forming a trench to define one or more isolation regions in a semiconductor structure
    12.
    发明授权
    Forming a trench to define one or more isolation regions in a semiconductor structure 有权
    形成沟槽以限定半导体结构中的一个或多个隔离区

    公开(公告)号:US06905943B2

    公开(公告)日:2005-06-14

    申请号:US10703387

    申请日:2003-11-06

    IPC分类号: H01L21/762 H01L21/76

    CPC分类号: H01L21/76232

    摘要: In one embodiment, a method for forming a semiconductor structure in manufacturing a semiconductor device includes providing a pad layer on a surface of a substrate, providing a nitride layer on the pad layer, and providing a sacrificial oxide layer on the nitride layer. In a first etching step, at least the sacrificial oxide and nitride layers are etched to define opposing substantially vertical surfaces of at least the sacrificial oxide and nitride layers. In a second etching step, the nitride layer is etched such that the opposing substantially vertical surfaces of the nitride layer are recessed from the opposing substantially vertical surfaces of the sacrificial oxide layer, the sacrificial oxide layer substantially preventing the nitride layer from decreasing in thickness as a result of the etching of the nitride layer. In a third etching step, the substrate is etched to form a trench extending into the substrate for purposes of defining one or more isolation regions adjacent the trench.

    摘要翻译: 在一个实施例中,在制造半导体器件中形成半导体结构的方法包括在衬底的表面上提供焊盘层,在焊盘层上提供氮化物层,并在氮化物层上提供牺牲氧化物层。 在第一蚀刻步骤中,至少牺牲氧化物层和氮化物层被蚀刻以限定至少牺牲氧化物层和氮化物层的相对的基本垂直的表面。 在第二蚀刻步骤中,蚀刻氮化物层,使得氮化物层的相对的基本上垂直的表面从牺牲氧化物层的相对的基本上垂直的表面凹陷,牺牲氧化物层基本上防止氮化物层的厚度减小 蚀刻氮化物层的结果。 在第三蚀刻步骤中,蚀刻衬底以形成延伸到衬底中的沟槽,用于限定与沟槽相邻的一个或多个隔离区域。

    Multi-layer silicide block process
    13.
    发明授权
    Multi-layer silicide block process 有权
    多层硅化物块工艺

    公开(公告)号:US06730554B1

    公开(公告)日:2004-05-04

    申请号:US10301246

    申请日:2002-11-21

    IPC分类号: H01L218238

    CPC分类号: H01L28/20 H01L27/0629

    摘要: An integrated circuit resistor (170) is formed on an isolation dielectric structure (20) formed in a semiconductor (10). A patterned silicon nitride layer (125) and an optional patterned silicon oxide layer (135) is formed on the surface of the resistor polysilicon layer (40) that functions to mask the surface of the integrated circuit resistor (170) during the formation of metal silicide regions (160) on the integrated circuit resistor (170).

    摘要翻译: 在形成在半导体(10)中的隔离电介质结构(20)上形成集成电路电阻(170)。 在电阻器多晶硅层(40)的表面上形成图案化的氮化硅层(125)和任选的图案化氧化硅层(135),其在金属形成期间用于掩蔽集成电路电阻器(170)的表面 集成电路电阻器(170)上的硅化物区域(160)。

    Source line fabrication process for flash memory
    16.
    发明授权
    Source line fabrication process for flash memory 有权
    闪存的源线制造过程

    公开(公告)号:US6071779A

    公开(公告)日:2000-06-06

    申请号:US225436

    申请日:1999-01-05

    IPC分类号: H01L21/8247

    CPC分类号: H01L27/11521

    摘要: A method of fabricating a semiconductor device having a memory array (9) that includes a source line (24) is provided. The method of forming the source line (24) may include providing a semiconductor substrate (52) having a source region (60) separated from a drain region (62) by a channel region (64). An isolation structure (70) may be formed in the semiconductor substrate (52). The isolation structure (70) may cross the source region (60), the drain region (62), and the channel region (64) of the semiconductor substrate (52). An isolation dielectric material (78) may be formed within the isolation structure (70). A continuous stack structure (50) may be formed outwardly from the channel region (64) of the semiconductor substrate (52) and the isolation structure (70). A first photomask (100) may be formed outwardly from the continuous stack structure (50) and the semiconductor substrate (52). The first photomask (100) may expose a strip region (102) of the semiconductor substrate (52) and the isolation structure (70). The isolation dielectric material (78) may be removed from the exposed portion the isolation structure (70) to expose the semiconductor substrate (52). A dopant may be implanted into the exposed semiconductor substrate (52) to form the source line (24) in the semiconductor device.

    摘要翻译: 提供一种制造具有包括源极线(24)的存储器阵列(9)的半导体器件的方法。 形成源极线(24)的方法可以包括提供具有通过沟道区(64)与漏极区(62)分离的源极区(60)的半导体衬底(52)。 隔离结构(70)可以形成在半导体衬底(52)中。 隔离结构(70)可以穿过半导体衬底(52)的源极区域(60),漏极区域(62)和沟道区域(64)。 隔离电介质材料(78)可以形成在隔离结构(70)内。 可以从半导体衬底(52)的沟道区(64)和隔离结构(70)向外形成连续堆叠结构(50)。 可以从连续堆叠结构(50)和半导体衬底(52)向外形成第一光掩模(100)。 第一光掩模(100)可以暴露半导体衬底(52)和隔离结构(70)的条带区域(102)。 隔离电介质材料(78)可以从隔离结构(70)的暴露部分去除以暴露半导体衬底(52)。 可以将掺杂剂注入到暴露的半导体衬底(52)中以在半导体器件中形成源极线(24)。

    Extended-life method for soft-programming floating-gate memory cells
    17.
    发明授权
    Extended-life method for soft-programming floating-gate memory cells 失效
    软编程浮栅存储器单元的扩展寿命方法

    公开(公告)号:US5576992A

    公开(公告)日:1996-11-19

    申请号:US521555

    申请日:1995-08-30

    申请人: Freidoon Mehrad

    发明人: Freidoon Mehrad

    CPC分类号: G11C16/3409 G11C16/3404

    摘要: An extended-life method for soft-programming at least one floating gate memory cell (10) includes connecting the substrate and the source (11) to a reference voltage, then applying to the control gate (13) a soft-programming voltage, the soft-programming voltage being between thirty and sixty percent of the voltage used to hard-program the cell. Increasing voltages are applied to the drain (12), while measuring the current flow into the drain (12). A specific drain (12) voltage, less than or equal to that value of drain (12) voltage at which the current flow into the drain (12) reaches a first peak, is chosen. With the substrate at reference voltage, the cell (10) is soft-programmed by applying to the drain (12) a first voltage slightly less than or equal to the specific drain (12) voltage; by applying to the source (11) a non-negative second voltage less than the specific drain (12) voltage; and by applying to the control gate (13) a third voltage no greater than the soft-programming voltage.

    摘要翻译: 用于软编程至少一个浮动栅极存储单元(10)的延长寿命方法包括将衬底和源极(11)连接到参考电压,然后向控制栅极(13)施加软编程电压, 软编程电压是用于硬编程单元的电压的三十到百分之六十。 在测量进入漏极(12)的电流的同时,向漏极(12)施加增加的电压。 选择小于或等于流入漏极(12)的电流的漏极(12)电压达到第一峰值的特定漏极(12)电压。 在衬底处于参考电压的情况下,电池(10)通过向漏极(12)施加稍微小于或等于特定漏极(12)电压的第一电压而进行软编程; 通过向源极(11)施加小于特定漏极(12)电压的非负第二电压; 并且通过向控制栅极(13)施加不大于软编程电压的第三电压。

    Method to attain low defectivity fully silicided gates
    18.
    发明授权
    Method to attain low defectivity fully silicided gates 有权
    获得低缺陷性全硅化物门的方法

    公开(公告)号:US08273645B2

    公开(公告)日:2012-09-25

    申请号:US12537336

    申请日:2009-08-07

    IPC分类号: H01L21/3205 H01L21/4763

    摘要: A method of forming fully silicided (FUSI) gates in MOS transistors which is compatible with wet etch processes used in source/drain silicide formation is disclosed. The gate silicide formation step produces a top layer of metal rich silicide which is resistant to removal in wet etch processes. A blocking layer over active areas prevents source/drain silicide formation during gate silicide formation. Wet etches during removal of the blocking layer and source/drain metal strip do not remove the metal rich gate silicide layer. Anneal of the gate silicide to produce a FUSI gate with a desired stoichiometry is delayed until after formation of the source/drain silicide. The disclosed method is compatible with nickel and nickel-platinum silicide processes.

    摘要翻译: 公开了一种在MOS晶体管中形成完全硅化(FUSI)栅极的方法,其与源极/漏极硅化物形成中使用的湿蚀刻工艺兼容。 栅极硅化物形成步骤产生富含金属的硅化物的顶层,其耐湿蚀刻工艺中的去除。 有源区域上的阻挡层防止栅极硅化物形成期间的源/漏硅化物形成。 去除阻挡层和源极/漏极金属带期间的湿蚀刻不能去除富金属栅极硅化物层。 栅极硅化物的退火以产生具有所需化学计量的FUSI栅极被延迟直到形成源极/漏极硅化物。 所公开的方法与镍和镍 - 铂硅化物工艺兼容。

    METHOD OF SIMULTANEOUSLY SILICIDING A POLYSILICON GATE AND SOURCE/DRAIN OF A SEMICONDUCTOR DEVICE, AND RELATED DEVICE
    19.
    发明申请
    METHOD OF SIMULTANEOUSLY SILICIDING A POLYSILICON GATE AND SOURCE/DRAIN OF A SEMICONDUCTOR DEVICE, AND RELATED DEVICE 审中-公开
    同时硅化多晶硅栅极和半导体器件的源极/漏极的方法及相关器件

    公开(公告)号:US20100176462A1

    公开(公告)日:2010-07-15

    申请号:US12731932

    申请日:2010-03-25

    IPC分类号: H01L29/78

    摘要: A method of simultaneously siliciding a polysilicon gate and source/drain of a semiconductor device, and related device. At least some of the illustrative embodiments are methods comprising forming a gate stack over a semiconductor substrate (the gate stack comprising a first polysilicon layer, a first nitride layer, and a second polysilicon layer), forming a second nitride layer over an active region in the semiconductor substrate adjacent to the gate stack, performing a chemical mechanical polishing that stops on the first nitride layer and on the second nitride layer, removing the first nitride layer and the second nitride layer, and performing a simultaneous silicidation of the first polysilicon layer and the active region.

    摘要翻译: 同时硅化半导体器件的多晶硅栅极和源极/漏极的方法以及相关器件。 示例性实施例中的至少一些是包括在半导体衬底上形成栅极堆叠的方法(栅堆叠包括第一多晶硅层,第一氮化物层和第二多晶硅层),在有源区上形成第二氮化物层 所述半导体衬底与所述栅极堆叠相邻,执行停止在所述第一氮化物层和所述第二氮化物层上的化学机械抛光,去除所述第一氮化物层和所述第二氮化物层,以及执行所述第一多晶硅层的同时硅化;以及 活跃区域。

    Method of simultaneously siliciding a polysilicon gate and source/drain of a semiconductor device, and related device
    20.
    发明授权
    Method of simultaneously siliciding a polysilicon gate and source/drain of a semiconductor device, and related device 有权
    同时硅化半导体器件的多晶硅栅极和源极/漏极的方法及相关器件

    公开(公告)号:US07727842B2

    公开(公告)日:2010-06-01

    申请号:US11741519

    申请日:2007-04-27

    IPC分类号: H01L21/8234

    摘要: A method of simultaneously siliciding a polysilicon gate and source/drain of a semiconductor device, and related device. At least some of the illustrative embodiments are methods comprising forming a gate stack over a semiconductor substrate (the gate stack comprising a first polysilicon layer, a first nitride layer, and a second polysilicon layer), forming a second nitride layer over an active region in the semiconductor substrate adjacent to the gate stack, performing a chemical mechanical polishing that stops on the first nitride layer and on the second nitride layer, removing the first nitride layer and the second nitride layer, and performing a simultaneous silicidation of the first polysilicon layer and the active region.

    摘要翻译: 同时硅化半导体器件的多晶硅栅极和源极/漏极的方法以及相关器件。 示例性实施例中的至少一些是包括在半导体衬底上形成栅极堆叠的方法(栅堆叠包括第一多晶硅层,第一氮化物层和第二多晶硅层),在有源区上形成第二氮化物层 所述半导体衬底与所述栅极堆叠相邻,执行停止在所述第一氮化物层和所述第二氮化物层上的化学机械抛光,去除所述第一氮化物层和所述第二氮化物层,以及执行所述第一多晶硅层的同时硅化;以及 活跃区域。