公开(公告)号：US06284637B1

公开(公告)日：2001-09-04

申请号：US09280023

申请日：1999-03-29

申请人： Vijai Komar N. Chhagan ,  Yelehanka Machandramurthy Pradee ,  Mei Sheng Zhou ,  Henry Gerung

发明人： Vijai Komar N. Chhagan ,  Yelehanka Machandramurthy Pradee ,  Mei Sheng Zhou ,  Henry Gerung

IPC分类号： H01L218247

CPC分类号： H01L21/28273 ,  H01L29/7883

摘要： A method to fabricate a floating gate with a sloping sidewall for a Flash Memory is described. Field oxide isolation regions are provided in the substrate. A silicon oxide layer is provided overlying the isolation regions and the substrate. A first polysilicon layer is deposited overlying the silicon oxide layer. A photoresist layer is deposited overlying the first polysilicon layer. The photoresist layer is etched to remove sections of the photoresist as defined by photolithographic process. The photoresist layer, the first polysilicon layer, and the silicon oxide layer are etched in areas uncovered by the photoresist layer to create structures with sloping sidewall edges. The photoresist layer is etched away. An interpoly dielectric layer is deposited overlying the structures, the sloping sidewall edges, and the isolation regions. A second polysilicon layer is deposited overlying the interpoly dielectric and the fabrication of the integrated circuit device is completed.

摘要翻译： 描述了一种用于制造具有用于闪存的倾斜侧壁的浮动栅极的方法。 在衬底中提供场氧化物隔离区。 提供覆盖隔离区域和衬底的氧化硅层。 沉积在氧化硅层上的第一多晶硅层。 沉积在第一多晶硅层上的光致抗蚀剂层。 蚀刻光致抗蚀剂层以除去由光刻工艺定义的光致抗蚀剂部分。 光刻胶层，第一多晶硅层和氧化硅层被蚀刻在未被光致抗蚀剂层覆盖的区域中，以产生具有倾斜侧壁边缘的结构。 蚀刻掉光致抗蚀剂层。 叠层介质层沉积在结构上，倾斜的侧壁边缘和隔离区域上。 第二多晶硅层沉积在叠层电介质上，并且完成了集成电路器件的制造。

公开(公告)号：US06303447B1

公开(公告)日：2001-10-16

申请号：US09502036

申请日：2000-02-11

申请人： Vijai Komar Chhagan ,  Yelehanka Ramachandramurthy Pradeep ,  Mei Sheng Zhou ,  Henry Gerung ,  Simon Chooi

发明人： Vijai Komar Chhagan ,  Yelehanka Ramachandramurthy Pradeep ,  Mei Sheng Zhou ,  Henry Gerung ,  Simon Chooi

IPC分类号： H01L21336

CPC分类号： H01L29/66545 ,  H01L21/28044 ,  H01L21/28114 ,  H01L29/41 ,  H01L29/42376 ,  H01L29/4941

摘要： A method for forming an extended metal gate without poly wrap around effects. A semiconductor structure is provided having a gate structure thereon. The gate structure comprising a gate dielectric layer, a gate silicon layer, a doped silicon oxide layer, and a disposable gate layer stacked sequentially. Spacers are formed on the sidewalls of the gate structure. A dielectric gapfill layer is formed over the semiconductor structure and the gate structure and planarized, stopping on the disposable gate layer. A first silicon nitride layer is formed over the disposable gate layer, and a dielectric layer is formed over the first silicon nitride layer. The dielectric layer is patterned to form a trench over the gate structure; wherein the trench has a width greater than the width of the gate structure. The first silicon nitride layer in the bottom of the trench and the disposable gate layer are removed using one or more selective etching processes. The doped silicon oxide layer is removed using an etch with a high selectivity of doped silicon oxide to undoped silicon oxide. A barrier layer is formed over the gate silicon layer, and a metal gate layer is formed on the barrier layer; whereby the metal gate layer has a greater width than the gate structure.

摘要翻译： 一种用于形成不具有聚环绕效应的延伸金属栅极的方法。 提供其上具有栅极结构的半导体结构。 栅极结构包括依次堆叠的栅极介电层，栅极硅层，掺杂氧化硅层和一次性栅极层。 隔板形成在栅极结构的侧壁上。 在半导体结构和栅极结构之上形成电介质间隙填充层，并在一次性栅极层上停止平坦化。 在一次性栅极层上形成第一氮化硅层，并且在第一氮化硅层上形成电介质层。 图案化电介质层以在栅极结构上形成沟槽; 其中所述沟槽的宽度大于所述栅极结构的宽度。 使用一个或多个选择性蚀刻工艺去除沟槽底部中的第一氮化硅层和一次性栅极层。 使用掺杂的氧化硅对未掺杂的氧化硅具有高选择性的蚀刻来去除掺杂的氧化硅层。 在栅极硅层上形成阻挡层，在阻挡层上形成金属栅极层; 由此金属栅极层具有比栅极结构更大的宽度。

公开(公告)号：US06387765B2

公开(公告)日：2002-05-14

申请号：US09946982

申请日：2001-09-06

申请人： Vijai Kumar Chhagan ,  Yelehanka Ramachandramurthy Pradeep ,  Mei Sheng Zhou ,  Henry Gerung ,  Simon Chooi

发明人： Vijai Kumar Chhagan ,  Yelehanka Ramachandramurthy Pradeep ,  Mei Sheng Zhou ,  Henry Gerung ,  Simon Chooi

IPC分类号： H01L21336

CPC分类号： H01L29/66545 ,  H01L21/28044 ,  H01L21/28114 ,  H01L29/41 ,  H01L29/42376 ,  H01L29/4941

摘要： A method for forming an extended metal gate without poly wrap around effects. A semiconductor structure is provided having a gate structure thereon. The gate structure comprising a gate dielectric layer, a gate silicon layer, a doped silicon oxide layer, and a disposable gate layer stacked sequentially. Spacers are formed on the sidewalls of the gate structure. A dielectric gapfill layer is formed over the semiconductor structure and the gate structure and planarized, stopping on the disposable gate layer. A first silicon nitride layer is formed over the disposable gate layer, and a dielectric layer is formed over the first silicon nitride layer. The dielectric layer is patterned to form a trench over the gate structure; therein the trench has a width greater than the width of the gate structure. The first silicon nitride layer in the bottom of the trench and the disposable gate layer are removed using one or more selective etching processes. The doped silicon oxide layer is removed using an etch with a high selectivity of doped silicon oxide to undoped silicon oxide. A barrier layer is formed over the gate silicon layer, and a metal gate layer is formed on the barrier layer; whereby the metal gate layer has a greater width than the gate structure.

摘要翻译： 一种用于形成不具有聚环绕效应的延伸金属栅极的方法。 提供其上具有栅极结构的半导体结构。 栅极结构包括依次堆叠的栅极介电层，栅极硅层，掺杂氧化硅层和一次性栅极层。 隔板形成在栅极结构的侧壁上。 在半导体结构和栅极结构之上形成电介质间隙填充层，并在一次性栅极层上停止平坦化。 在一次性栅极层上形成第一氮化硅层，并且在第一氮化硅层上形成电介质层。 图案化电介质层以在栅极结构上形成沟槽; 其中沟槽的宽度大于栅极结构的宽度。 使用一个或多个选择性蚀刻工艺去除沟槽底部中的第一氮化硅层和一次性栅极层。 使用掺杂的氧化硅对未掺杂的氧化硅具有高选择性的蚀刻来去除掺杂的氧化硅层。 在栅极硅层上形成阻挡层，在阻挡层上形成金属栅极层; 由此金属栅极层具有比栅极结构更大的宽度。

公开(公告)号：US08394724B2

公开(公告)日：2013-03-12

申请号：US11843629

申请日：2007-08-22

申请人： Hai Cong ,  Wei Loong Loh ,  Krishan Gopal ,  Xin Zhang ,  Mei Sheng Zhou ,  Pradeep Ramachandramurthy Yelehanka

发明人： Hai Cong ,  Wei Loong Loh ,  Krishan Gopal ,  Xin Zhang ,  Mei Sheng Zhou ,  Pradeep Ramachandramurthy Yelehanka

IPC分类号： H01L21/312

CPC分类号： H01L21/32137 ,  H01L21/32139

摘要： A method for forming device features with reduced line end shortening (LES) includes trimming the device feature to achieve the desired sub-ground rule critical dimension during the etch to form the device feature.

摘要翻译： 用于形成具有减少的线端缩短（LES）的器件特征的方法包括修整器件特征以在蚀刻期间实现期望的子接地规则临界尺寸以形成器件特征。

公开(公告)号：US08324011B2

公开(公告)日：2012-12-04

申请号：US11853156

申请日：2007-09-11

申请人： Chyiu Hyia Poon ,  Alex See ,  Mei Sheng Zhou

发明人： Chyiu Hyia Poon ,  Alex See ,  Mei Sheng Zhou

IPC分类号： H01L21/00

CPC分类号： H01L21/324 ,  H01L21/268

摘要： The present invention provides a method of annealing a semiconductor by applying a temperature-dependant phase switch layer to a semiconductor structure. The temperature-dependant phase switch layer changes phase from amorphous to crystalline at a predetermined temperature. When the semiconductor structure is annealed, electromagnetic radiation passes through the temperature-dependant phase switch layer before reaching the semiconductor structure. When a desired annealing temperature is reached the temperature-dependant phase switch layer substantially blocks the electromagnetic radiation from reaching the semiconductor structure. As a result, the semiconductor is annealed at a consistent temperature across the wafer. The temperature at which the temperature-dependant phase switch layer changes phase can be controlled by an ion implantation process.

摘要翻译： 本发明提供了一种通过向半导体结构施加温度相关的相位开关层来退火半导体的方法。 温度相关的相位开关层在预定温度下将相从非晶形变化为结晶。 当半导体结构退火时，电磁辐射在到达半导体结构之前通过温度相关的相位开关层。 当达到期望的退火温度时，温度相关的相位开关层基本上阻止电磁辐射到达半导体结构。 结果，半导体在晶片上以一致的温度退火。 温度相关的相位开关层改变相位的温度可以通过离子注入工艺来控制。

公开(公告)号：US20110281410A1

公开(公告)日：2011-11-17

申请号：US13190805

申请日：2011-07-26

申请人： JINPING LIU ,  Alex KH See ,  Mei Sheng Zhou ,  Liang Choo Hsia

发明人： JINPING LIU ,  Alex KH See ,  Mei Sheng Zhou ,  Liang Choo Hsia

IPC分类号： H01L21/8238 ,  H01L21/336

CPC分类号： H01L29/66636 ,  H01L21/823807 ,  H01L29/1054 ,  H01L29/165 ,  H01L29/4958 ,  H01L29/4975 ,  H01L29/51 ,  H01L29/66545 ,  H01L29/66651 ,  H01L29/7848

摘要： A transistor having an epitaxial channel and a method for fabricating a semiconductor device having an epitaxial channel, the method including forming a hardmask on a substrate and forming an opening in the hardmask. The opening is geometrically characterized by a long dimension and a short dimension, and the opening is arranged in a predetermined manner relative to the channel region of a transistor. An epitaxial material is formed in the opening that induces strain in substrate regions proximate to the epitaxial material. The epitaxial material is confined to the opening, such that an epitaxial channel is formed. A transistor is fabricated in proximity to the epitaxial channel, such that the strain induced in the substrate provides enhanced transistor performance. By confining the epitaxial material to a predefined channel in the substrate, plastic strain relaxation of the epitaxial material is minimized and a maximum amount of strain is induced in the substrate.

摘要翻译： 具有外延沟道的晶体管和用于制造具有外延沟道的半导体器件的方法，所述方法包括在衬底上形成硬掩模并在硬掩模中形成开口。 开口的几何特征在于长尺寸和短尺寸，并且开口以相对于晶体管的沟道区域的预定方式布置。 在开口中形成外延材料，其在靠近外延材料的衬底区域中引起应变。 外延材料限于开口，从而形成外延沟道。 在外延沟道附近制造晶体管，使得在衬底中感应的应变提供增强的晶体管性能。 通过将外延材料限制在衬底中的预定通道，外延材料的塑性应变弛豫被最小化，并且在衬底中引起最大量的应变。

公开(公告)号：US08012839B2

公开(公告)日：2011-09-06

申请号：US12040562

申请日：2008-02-29

申请人： Jinping Liu ,  Alex K H See ,  Mei Sheng Zhou ,  Liang Choo Hsia

发明人： Jinping Liu ,  Alex K H See ,  Mei Sheng Zhou ,  Liang Choo Hsia

IPC分类号： H01L21/336

CPC分类号： H01L29/66636 ,  H01L21/823807 ,  H01L29/1054 ,  H01L29/165 ,  H01L29/4958 ,  H01L29/4975 ,  H01L29/51 ,  H01L29/66545 ,  H01L29/66651 ,  H01L29/7848

摘要： A transistor having an epitaxial channel and a method for fabricating a semiconductor device having an epitaxial channel, the method including forming a hardmask on a substrate and forming an opening in the hardmask. The opening is geometrically characterized by a long dimension and a short dimension, and the opening is arranged in a predetermined manner relative to the channel region of a transistor. An epitaxial material is formed in the opening that induces strain in substrate regions proximate to the epitaxial material. The epitaxial material is confined to the opening, such that an epitaxial channel is formed. A transistor is fabricated in proximity to the epitaxial channel, such that the strain induced in the substrate provides enhanced transistor performance. By confining the epitaxial material to a predefined channel in the substrate, plastic strain relaxation of the epitaxial material is minimized and a maximum amount of strain is induced in the substrate.

摘要翻译： 具有外延沟道的晶体管和用于制造具有外延沟道的半导体器件的方法，所述方法包括在衬底上形成硬掩模并在硬掩模中形成开口。 开口的几何特征在于长尺寸和短尺寸，并且开口以相对于晶体管的沟道区域的预定方式布置。 在开口中形成外延材料，其在靠近外延材料的衬底区域中引起应变。 外延材料限于开口，从而形成外延沟道。 在外延沟道附近制造晶体管，使得在衬底中感应的应变提供增强的晶体管性能。 通过将外延材料限制在衬底中的预定通道，外延材料的塑性应变弛豫被最小化，并且在衬底中引起最大量的应变。

公开(公告)号：US07966142B2

公开(公告)日：2011-06-21

申请号：US12103690

申请日：2008-04-15

申请人： Wen Zhan Zhou ,  Zheng Zou ,  Jasper Goh ,  Mei Sheng Zhou

发明人： Wen Zhan Zhou ,  Zheng Zou ,  Jasper Goh ,  Mei Sheng Zhou

IPC分类号： G01D21/00 ,  G06F19/00

CPC分类号： H01L22/12 ,  G01B21/045 ,  G01B2210/56 ,  H01L22/20

摘要： A method for assessing metrology tool accuracy is described. Multi-variable regression is used to define the accuracy of a metrology tool such that the interaction between different measurement parameters is taken into account. A metrology tool under test (MTUT) and a reference metrology tool (RMT) are used to measure a set of test profiles. The MTUT measures the test profiles to generate a MTUT data set for a first measurement parameter. The RMT measures the test profiles to generate RMT data sets for the first measurement parameter, and at least a second measurement parameter. Multi-variable regression is then performed to generate a best-fit plane for the data sets. The coefficient of determination (R2 value) represents the accuracy index of the MTUT.

摘要翻译： 描述了一种评估测量工具精度的方法。 多变量回归用于定义计量工具的准确性，以便考虑不同测量参数之间的相互作用。 被测量的测量工具（MTUT）和参考计量工具（RMT）用于测量一组测试曲线。 MTUT测量测试配置文件，以生成第一个测量参数的MTUT数据集。 RMT测量测试配置文件以生成用于第一测量参数的RMT数据集和至少第二测量参数。 然后执行多变量回归以为数据集生成最佳拟合平面。 测定系数（R2值）表示MTUT的精度指标。

公开(公告)号：US07776699B2

公开(公告)日：2010-08-17

申请号：US12025788

申请日：2008-02-05

申请人： Jin Ping Liu ,  Alex K H See ,  Mei Sheng Zhou ,  Liang Choo Hsia

发明人： Jin Ping Liu ,  Alex K H See ,  Mei Sheng Zhou ,  Liang Choo Hsia

IPC分类号： H01L29/778

CPC分类号： H01L29/7848 ,  H01L21/26506 ,  H01L29/165 ,  H01L29/66636

摘要： A transistor device structure comprising: a substrate portion formed from a first material; and a source region, a drain region and a channel region formed in said substrate, the source and drain regions comprising a plurality of islands of a second material different from the first material, the islands being arranged to induce a strain in said channel region of the substrate.

摘要翻译： 一种晶体管器件结构，包括：由第一材料形成的衬底部分; 以及源区域，漏极区域和形成在所述衬底中的沟道区域，所述源极和漏极区域包括与所述第一材料不同的多个第二材料岛，所述岛被布置成在所述沟道区域中引起应变 底物。

公开(公告)号：US20090218597A1

公开(公告)日：2009-09-03

申请号：US12040562

申请日：2008-02-29

申请人： Jinping Liu ,  Alex KH See ,  Mei Sheng Zhou ,  Liang Choo Hsia

发明人： Jinping Liu ,  Alex KH See ,  Mei Sheng Zhou ,  Liang Choo Hsia

IPC分类号： H01L21/336 ,  H01L29/78

CPC分类号： H01L29/66636 ,  H01L21/823807 ,  H01L29/1054 ,  H01L29/165 ,  H01L29/4958 ,  H01L29/4975 ,  H01L29/51 ,  H01L29/66545 ,  H01L29/66651 ,  H01L29/7848

摘要： A transistor having an epitaxial channel and a method for fabricating a semiconductor device having an epitaxial channel, the method including forming a hardmask on a substrate and forming an opening in the hardmask. The opening is geometrically characterized by a long dimension and a short dimension, and the opening is arranged in a predetermined manner relative to the channel region of a transistor. An epitaxial material is formed in the opening that induces strain in substrate regions proximate to the epitaxial material. The epitaxial material is confined to the opening, such that an epitaxial channel is formed. A transistor is fabricated in proximity to the epitaxial channel, such that the strain induced in the substrate provides enhanced transistor performance. By confining the epitaxial material to a predefined channel in the substrate, plastic strain relaxation of the epitaxial material is minimized and a maximum amount of strain is induced in the substrate.

摘要翻译： 具有外延沟道的晶体管和用于制造具有外延沟道的半导体器件的方法，所述方法包括在衬底上形成硬掩模并在硬掩模中形成开口。 开口的几何特征在于长尺寸和短尺寸，并且开口以相对于晶体管的沟道区域的预定方式布置。 在开口中形成外延材料，其在靠近外延材料的衬底区域中引起应变。 外延材料限于开口，从而形成外延沟道。 在外延沟道附近制造晶体管，使得在衬底中感应的应变提供增强的晶体管性能。 通过将外延材料限制在衬底中的预定通道，外延材料的塑性应变弛豫被最小化，并且在衬底中引起最大量的应变。