MULTI-LAYER SPACER WITH INHIBITED RECESS/UNDERCUT AND METHOD FOR FABRICATION THEREOF
    11.
    发明申请
    MULTI-LAYER SPACER WITH INHIBITED RECESS/UNDERCUT AND METHOD FOR FABRICATION THEREOF 失效
    具有禁止记忆的多层隔板及其制造方法

    公开(公告)号:US20080116493A1

    公开(公告)日:2008-05-22

    申请号:US11560893

    申请日:2006-11-17

    IPC分类号: H01L21/28 H01L29/78

    摘要: A semiconductor structure includes a multi-layer spacer located adjacent and adjoining a sidewall of a topographic feature within the semiconductor structure. The multi-layer spacer includes a first spacer sub-layer comprising a deposited silicon oxide material laminated to a second spacer sub-layer comprising a material that is other than the deposited silicon oxide material. The first spacer sub-layer is recessed with respect to the second spacer sub-layer by a recess distance of no greater than a thickness of the first spacer sub-layer (and preferably from about 50 to about 150 angstroms). Such a recess distance is realized through use of a chemical oxide removal (COR) etchant that is self limiting for the deposited silicon oxide material with respect to a thermally grown silicon oxide material. Dimensional integrity and delamination avoidance is thus assured for the multi-layer spacer layer.

    摘要翻译: 半导体结构包括位于半导体结构内邻近并毗邻地形特征的侧壁的多层隔离物。 多层间隔物包括第一间隔子层,该第一间隔子层包含层叠到包含不同于沉积氧化硅材料的材料的第二间隔子层的沉积氧化硅材料。 第一间隔子层相对于第二间隔物子层凹陷凹陷距离不大于第一间隔子层的厚度(优选为约50至约150埃)。 通过使用相对于热生长的氧化硅材料对沉积的氧化硅材料来说是自限制的化学氧化物去除(COR)蚀刻剂来实现这种凹陷距离。 因此确保了多层间隔层的尺寸完整性和分层避免。

    Multiple thickness of gate oxide
    15.
    发明授权
    Multiple thickness of gate oxide 失效
    多重厚度的栅极氧化物

    公开(公告)号:US06258673B1

    公开(公告)日:2001-07-10

    申请号:US09470460

    申请日:1999-12-22

    IPC分类号: H01L218234

    CPC分类号: H01L21/823462 Y10S438/981

    摘要: A method of forming an integrated circuit having four thicknesses of gate oxide in four sets of active areas by: oxidizing the silicon substrate to form an initial oxide having a thickness appropriate for a desired threshold voltage transistor; depositing a blocking mask to leave a first and fourth set of active areas exposed; implanting the first and fourth set of active areas with a dose of growth-altering ions, thereby making the first set of active areas more or less resistant to oxidation and simultaneously making the fourth set of active areas susceptible to accelerated oxidation; stripping the blocking mask; forming a second blocking mask to leave the first and second sets of active areas exposed; stripping the initial oxide in exposed active areas; stripping the second blocking mask; surface cleaning the wafer; and oxidizing the substrate in a second oxidation step such that a standard oxide thickness is formed in the second set of active areas, whereby an oxide thickness of more or less than the standard oxide thickness is formed in the first set of active areas, an oxide thickness of greater than the standard oxide thickness is formed in the third set of active areas, and a fourth oxide thickness greater than the third oxide thickness is formed in the fourth set of active areas.

    摘要翻译: 一种通过以下步骤形成具有四组有源区的四种厚度的栅极氧化物的集成电路的方法:氧化硅衬底以形成具有适合于期望阈值电压晶体管的厚度的初始氧化物; 沉积阻挡掩模以留下暴露的第一和第四组有效区域; 用一定剂量的生长变化的离子注入第一组和第四组活性区域,从而使第一组活性区域或多或少抵抗氧化,同时使第四组活性区域易于加速氧化; 剥离阻挡面具; 形成第二阻挡掩模以使第一和第二组有效区域暴露; 剥离暴露的活性区域中的初始氧化物; 剥离第二阻挡面具; 表面清洗晶圆; 以及在第二氧化步骤中氧化所述衬底,使得在所述第二组有源区中形成标准氧化物厚度,由此在所述第一组有源区中形成大于或小于标准氧化物厚度的氧化物厚度, 在第三组有源区中形成大于标准氧化物厚度的厚度,并且在第四组有源区中形成大于第三氧化物厚度的第四氧化物厚度。

    Multi-layer spacer with inhibited recess/undercut and method for fabrication thereof
    17.
    发明授权
    Multi-layer spacer with inhibited recess/undercut and method for fabrication thereof 失效
    具有抑制凹陷/底切的多层间隔物及其制造方法

    公开(公告)号:US07446007B2

    公开(公告)日:2008-11-04

    申请号:US11560893

    申请日:2006-11-17

    IPC分类号: H01L21/336

    摘要: A semiconductor structure includes a multi-layer spacer located adjacent and adjoining a sidewall of a topographic feature within the semiconductor structure. The multi-layer spacer includes a first spacer sub-layer comprising a deposited silicon oxide material laminated to a second spacer sub-layer comprising a material that is other than the deposited silicon oxide material. The first spacer sub-layer is recessed with respect to the second spacer sub-layer by a recess distance of no greater than a thickness of the first spacer sub-layer (and preferably from about 50 to about 150 angstroms). Such a recess distance is realized through use of a chemical oxide removal (COR) etchant that is self limiting for the deposited silicon oxide material with respect to a thermally grown silicon oxide material. Dimensional integrity and delamination avoidance is thus assured for the multi-layer spacer layer.

    摘要翻译: 半导体结构包括位于半导体结构内邻近并毗邻地形特征的侧壁的多层隔离物。 多层间隔物包括第一间隔子层,该第一间隔子层包含层叠到包含不同于沉积氧化硅材料的材料的第二间隔子层的沉积氧化硅材料。 第一间隔子层相对于第二间隔物子层凹陷凹陷距离不大于第一间隔子层的厚度(优选为约50至约150埃)。 通过使用相对于热生长的氧化硅材料对沉积的氧化硅材料来说是自限制的化学氧化物去除(COR)蚀刻剂来实现这种凹陷距离。 因此确保了多层间隔层的尺寸完整性和分层避免。

    GATE STACKS
    18.
    发明申请
    GATE STACKS 有权
    门盖

    公开(公告)号:US20070194385A1

    公开(公告)日:2007-08-23

    申请号:US11463039

    申请日:2006-08-08

    IPC分类号: H01L29/94

    摘要: A gate stack structure. The structure includes (a) a semiconductor region and (b) a gate stack on top of the semiconductor region. The gate stack includes (i) a gate dielectric region on top of the semiconductor region, (ii) a first gate polysilicon region on top of the gate dielectric region, and (iii) a second gate polysilicon region on top of the first gate polysilicon region and doped with a type of dopants. The structure further includes (c) a diffusion barrier region and a spacer oxide region on a side wall of the gate stack. The diffusion barrier region (i) is sandwiched between the gate stack and the spacer oxide region and (ii) is in direct physical contact with both the first and second gate polysilicon regions, and (iii) comprises a material having a property of preventing a diffusion of oxygen-containing materials through the diffusion barrier region.

    摘要翻译: 门堆栈结构。 该结构包括(a)半导体区域和(b)在半导体区域的顶部上的栅极堆叠。 栅极堆叠包括(i)在半导体区域的顶部上的栅极电介质区域,(ii)位于栅极电介质区域顶部的第一栅极多晶硅区域,以及(iii)位于第一栅极多晶硅顶部的第二栅极多晶硅区域 并掺杂一种掺杂剂。 该结构还包括(c)栅叠层的侧壁上的扩散阻挡区和间隔氧化物区。 扩散阻挡区域(i)夹在栅极叠层和间隔氧化物区域之间,(ii)与第一和第二栅极多晶硅区域直接物理接触,并且(iii)包括具有防止 含氧材料通过扩散阻挡区扩散。

    Method for dual sidewall oxidation in high density, high performance DRAMS
    19.
    发明授权
    Method for dual sidewall oxidation in high density, high performance DRAMS 失效
    高密度,高性能DRAMS双壁氧化方法

    公开(公告)号:US06197632B1

    公开(公告)日:2001-03-06

    申请号:US09440776

    申请日:1999-11-16

    IPC分类号: H01L218242

    摘要: This invention relates to integrated circuit product and processes. More particularly, the invention relates to high performance Dynamic Random Access Memory (DRAM) chips and processes for making such chips. An IC fabrication is provided, according to an aspect of the invention, including a silicon wafer, a DRAM array fabrication disposed on said silicon wafer having a first multitude of gate sidewall oxides, and a logic support device fabrication disposed on said wafer adjacent said DRAM array fabrication and having a second multitude of gate sidewall oxides, said first multitude of gate sidewall oxides being substantially thicker than said second multitude of gate sidewall oxides. Methods of making IC fabrications according to the invention are also provided.

    摘要翻译: 本发明涉及集成电路产品和工艺。 更具体地,本发明涉及高性能动态随机存取存储器(DRAM)芯片和用于制造这种芯片的过程。 提供根据本发明的一个方面的IC制造,包括硅晶片,设置在具有第一多个栅极侧壁氧化物的所述硅晶片上的DRAM阵列制造,以及设置在与所述DRAM相邻的所述晶片上的逻辑支持器件制造 阵列制造并具有第二多个栅极侧壁氧化物,所述第一多个栅极侧壁氧化物基本上比所述第二多个栅极侧壁氧化物厚。 还提供了制造根据本发明的IC制造的方法。