Shallow trench isolation process using chemical-mechanical polish with
self-aligned nitride mask on HDP-oxide
    1.
    发明授权
    Shallow trench isolation process using chemical-mechanical polish with self-aligned nitride mask on HDP-oxide 失效
    浅沟槽隔离工艺使用化学机械抛光与自对准氮化物掩模在HDP氧化物上

    公开(公告)号:US6057207A

    公开(公告)日:2000-05-02

    申请号:US47542

    申请日:1998-03-25

    CPC classification number: H01L21/76229 H01L21/76224

    Abstract: A method of planarizing a non-conformal oxide layer 40 forming shallow trench isolation between active areas 12 in a substrate. The invention uses a first chemical-mechanical polish (CMP) step to form openings 50 only over wide active areas. An etch is used to remove oxide 40 from only over the wide active areas 12A. A second CMP step is used to planarized the oxide layer 40. The invention begins by forming spaced trenches 30 in said substrate 10 defining active areas 12. A first insulating layer 40 composed of a non-conformal silicon oxide is formed by a HDPCVD process over the substrate and fills the trenches 30. A etch barrier layer 44 is formed over the first insulating layer 40. In a first chemical-mechanical polish (CMP) step, the conformal etch barrier layer 44 over only the wide raised portions 12A is polished to form a self-aligned first openings 50. The chemical-mechanical polishing of the conformal etch barrier layer forms a self-aligned etch mask. The first insulating layer 40 is then etched through at least the first opening 50 to expose a first barrier layer 24 over the wide active areas 12A. In a second CMP step, the etch barrier layer 44 is removed and the first insulating layer 40 is planarized to fill the shallow trenches 30.

    Abstract translation: 在衬底中的有源区域12之间形成浅沟槽隔离的非保形氧化物层40的平面化方法。 本发明使用第一化学机械抛光(CMP)步骤仅在宽的有效区域上形成开口50。 使用蚀刻仅从宽的有源区域12A移除氧化物40。 使用第二CMP步骤对氧化物层40进行平坦化。本发明通过在限定有源区域12的所述衬底10中形成间隔开的沟槽30开始。由非保形氧化硅构成的第一绝缘层40通过HDPCVD工艺形成 衬底并填充沟槽30.蚀刻阻挡层44形成在第一绝缘层40的上方。在第一化学机械抛光(CMP)步骤中,只有宽的凸起部分12A上的共形蚀刻阻挡层44被抛光到 形成自对准的第一开口50.保形蚀刻阻挡层的化学机械抛光形成自对准的蚀刻掩模。 然后,通过至少第一开口50蚀刻第一绝缘层40,以在宽的有源区域12A上露出第一阻挡层24。 在第二CMP步骤中,去除蚀刻阻挡层44,并且平坦化第一绝缘层40以填充浅沟槽30。

    Semiconductor device with localized stressor
    3.
    发明授权
    Semiconductor device with localized stressor 有权
    具有局部应激源的半导体器件

    公开(公告)号:US08158474B2

    公开(公告)日:2012-04-17

    申请号:US12873889

    申请日:2010-09-01

    Abstract: A semiconductor device, such as a PMOS transistor, having localized stressors is provided. Recesses are formed on opposing sides of gate electrodes such that the recesses are offset from the gate electrode by dummy spacers. The recesses are filled with a stress-inducing layer. The dummy recesses are removed and lightly-doped drains are formed. Thereafter, new spacers are formed and the stress-inducing layer is recessed. One or more additional implants may be performed to complete source/drain regions. In an embodiment, the PMOS transistor may be formed on the same substrate as one or more NMOS transistors. Dual etch stop layers may also be formed over the PMOS and/or the NMOS transistors.

    Abstract translation: 提供具有局部应力源的诸如PMOS晶体管的半导体器件。 凹槽形成在栅电极的相对侧上,使得凹槽通过假间隔件从栅电极偏移。 这些凹部填充有应力诱导层。 去除虚拟凹槽并形成轻掺杂的排水沟。 此后,形成新的间隔物并且应力诱导层凹陷。 可以执行一个或多个附加植入物以完成源极/漏极区域。 在一个实施例中,PMOS晶体管可以形成在与一个或多个NMOS晶体管相同的衬底上。 也可以在PMOS和/或NMOS晶体管上形成双重蚀刻停止层。

    Self-Aligned Spacer Contact
    5.
    发明申请
    Self-Aligned Spacer Contact 审中-公开
    自对准垫片联系人

    公开(公告)号:US20080272410A1

    公开(公告)日:2008-11-06

    申请号:US11743519

    申请日:2007-05-02

    Applicant: Chung-Te Lin

    Inventor: Chung-Te Lin

    Abstract: A metal-oxide-semiconductor field-effect transistor (MOSFET) having self-aligned spacer contacts is provided. In accordance with embodiments of the present invention, a transistor, having a gate electrode and source/drain regions formed on opposing sides of the gate electrode, is covered with a first dielectric layer. A first contact opening is formed in the first dielectric layer to expose at least a portion of one of the source/drain regions. A second dielectric layer is formed over the first dielectric layer. Thereafter, an inter-layer dielectric layer is formed over the second dielectric layer and a second contact opening is formed through the inter-layer dielectric layer. In an embodiment, an etch-back process may be performed on the second dielectric layer prior to forming the inter-layer dielectric layer.

    Abstract translation: 提供了具有自对准间隔触点的金属氧化物半导体场效应晶体管(MOSFET)。 根据本发明的实施例,具有形成在栅电极的相对侧上的栅电极和源极/漏极区的晶体管被​​第一介电层覆盖。 在第一电介质层中形成第一接触开口以暴露源/漏区之一的至少一部分。 在第一电介质层上形成第二电介质层。 此后,在第二电介质层上形成层间电介质层,通过层间电介质层形成第二接触开口。 在一个实施例中,可以在形成层间电介质层之前在第二电介质层上执行回蚀工艺。

    CMOS on SOI substrates with hybrid crystal orientations
    6.
    发明申请
    CMOS on SOI substrates with hybrid crystal orientations 有权
    CMOS在具有杂化晶体取向的SOI衬底上

    公开(公告)号:US20060292770A1

    公开(公告)日:2006-12-28

    申请号:US11290914

    申请日:2005-11-30

    Abstract: Methods and structures for CMOS devices with hybrid crystal orientations using double SOI substrates is provided. In accordance with preferred embodiments, a manufacturing sequence includes the steps of forming an SOI silicon epitaxy layer after the step of forming shallow trench isolation regions. The preferred sequence allows hybrid SOI CMOS fabrication without encountering problems caused by forming STI regions after epitaxy. A preferred device includes an NFET on a {100} crystal orientation and a PFET on a {110} crystal orientation. An NMOS channel may be oriented along the direction, which is the direction of maximum electron mobility for a {100} substrate. A PMOS channel may be oriented along the direction, which is the direction where hole mobility is maximum for a {110} substrate.

    Abstract translation: 提供了使用双重SOI衬底的具有混合晶体取向的CMOS器件的方法和结构。 根据优选实施例,制造顺序包括在形成浅沟槽隔离区的步骤之后形成SOI硅外延层的步骤。 优选的顺序允许混合SOI CMOS制造,而不会遇到在外延后形成STI区域引起的问题。 优选的器件包括{100}晶体取向的NFET和{110}晶体取向的PFET。 可以沿着<100>方向取向NMOS沟道,这是{100}衬底的最大电子迁移率的方向。 可以沿着<110>方向取向PMOS沟道,这是{110}衬底的空穴迁移率最大的方向。

    Self aligned channel implant, elevated S/D process by gate electrode damascene
    7.
    发明授权
    Self aligned channel implant, elevated S/D process by gate electrode damascene 有权
    自对准通道植入,栅电极镶嵌提高S / D工艺

    公开(公告)号:US06287926B1

    公开(公告)日:2001-09-11

    申请号:US09253297

    申请日:1999-02-19

    Abstract: A method for creating a self-aligned channel implant with elevated source/drain areas. Forming a thin dielectric layer on top of a silicon substrate, a thick layer of oxide is deposited over this dielectric. An opening is exposed and etched through the layer of oxide, through the dielectric and into the underlying silicon substrate creating a shallow trench in the substrate. By performing the channel implant LDD implant, pocket implant, forming the gate spacers and electrode, removing the thick layer of oxide and forming the S/D regions a gate electrode has been created with elevated S/D regions. By forming the gate spacers, performing channel implant, forming the gate electrode, removing the thick layer of oxide and performing S/D implant a gate electrode has been created with elevated S/D regions and disposable spacers. By forming the gate spacers and the gate electrode, removing the thick layer of oxide and performing S/D implant a gate electrode has been created with elevated S/D regions and spacers where the gate poly protrudes above the spacers thus enhancing the formation of silicide.

    Abstract translation: 一种用于产生具有升高的源极/漏极区域的自对准沟道植入物的方法。 在硅衬底的顶部形成薄的电介质层,在该电介质上沉积厚层氧化物。 将开口暴露并蚀刻通过氧化物层,通过电介质并进入下面的硅衬底,在衬底中形成浅沟槽。 通过执行通道注入LDD注入,口袋注入,形成栅极间隔物和电极,移除厚层氧化物并形成S / D区域,栅极电极已经产生了升高的S / D区域。 通过形成栅极间隔物,进行沟道注入,形成栅电极,去除厚层氧化物并执行S / D注入,已经产生了具有升高的S / D区域和一次性间隔物的栅电极。 通过形成栅极间隔物和栅电极,去除厚层氧化物并进行S / D注入,已经产生了具有升高的S / D区域和间隔物的栅电极,其中栅极聚合物突出在间隔物上方,从而增强了硅化物的形成 。

    Simplified process for the fabrication of deep clear laser marks using a
photoresist mask
    8.
    发明授权
    Simplified process for the fabrication of deep clear laser marks using a photoresist mask 有权
    使用光刻胶掩模制造深度清晰的激光标记的简化过程

    公开(公告)号:US6063695A

    公开(公告)日:2000-05-16

    申请号:US192451

    申请日:1998-11-16

    Abstract: A process for the formation of deep clear laser marks on silicon wafers is described. Tall ridges of material which is erupted from the wafer surface during the deep laser penetration form adjacent to the marks. These ridges are of the order of 3 to 15 microns in height and must be removed prior to subsequent wafer processing to avoid fragmentation causing scratches and particulate contamination. The process of the invention deposits a non-conformal layer of photoresist or other flowable material on the wafer. The peaks of the ridges protrude above the surface of the conformal layer be a significant amount and are then etched away using an aqueous silicon etch. The non-conformal layer protects the wafer surface from the silicon etch so that only the ridges are removed. After the ridges are etched, the non-conformal layer is removed leaving residual ridges of a height less than or equal to the thickness of the conformal layer.

    Abstract translation: 描述了在硅晶片上形成深度清晰的激光标记的工艺。 在深度激光穿透期间从晶片表面喷出的与标记相邻的材料的高隆起。 这些脊的高度为3至15微米的数量级,并且必须在随后的晶片加工之前被去除,以避免碎片引起划痕和颗粒污染。 本发明的方法在晶片上沉积光致抗蚀剂或其它可流动材料的非共形层。 突起在保形层表面之上的脊的峰值是相当大的量,然后使用含水硅蚀刻蚀刻掉。 非保形层保护晶片表面免受硅蚀刻,从而仅去除脊。 在蚀刻脊之后,去除非共形层,留下高度小于或等于共形层厚度的残留脊。

    Stress engineering to reduce dark current of CMOS image sensors
    9.
    发明授权
    Stress engineering to reduce dark current of CMOS image sensors 有权
    应力工程可以减少CMOS图像传感器的暗电流

    公开(公告)号:US08216905B2

    公开(公告)日:2012-07-10

    申请号:US12768063

    申请日:2010-04-27

    Abstract: The active pixel cell structures and methods of preparing such structures described above enable reduction of dark current and white cell counts for active pixel cells. The process of preparing active pixel cell structures introduces stress on the substrate, which could lead to increased dark current and white cell counts of active pixel cells. By depositing a stress layer as part of a pre-metal dielectric layer with a stress that counters the stress induced, both the dark current and the white cell counts can be reduced. If the transistors of the active pixel cells are NMOS, the carrier mobility can also be increased by a tensile stress layer. Raman Spectroscopy can be used to measure the stress exerted on the substrate prior to the deposition of the stress layer.

    Abstract translation: 上述有源像素单元结构和制备这种结构的方法能够减少有源像素单元的暗电流和白细胞计数。 制备有源像素单元结构的过程在衬底上引入应力,这可能导致有源像素单元的暗电流和白细胞计数增加。 通过沉积应力层作为预金属介电层的一部分,其应力引起应力,暗电流和白细胞计数都可以减小。 如果有源像素单元的晶体管是NMOS,则载流子迁移率也可以通过拉伸应力层增加。 拉曼光谱可用于测量在沉积应力层之前施加在基底上的应力。

    Semiconductor Device With Localized Stressor
    10.
    发明申请
    Semiconductor Device With Localized Stressor 有权
    具有局部应力的半导体器件

    公开(公告)号:US20100330755A1

    公开(公告)日:2010-12-30

    申请号:US12873889

    申请日:2010-09-01

    Abstract: A semiconductor device, such as a PMOS transistor, having localized stressors is provided. Recesses are formed on opposing sides of gate electrodes such that the recesses are offset from the gate electrode by dummy spacers. The recesses are filled with a stress-inducing layer. The dummy recesses are removed and lightly-doped drains are formed. Thereafter, new spacers are formed and the stress-inducing layer is recessed. One or more additional implants may be performed to complete source/drain regions. In an embodiment, the PMOS transistor may be formed on the same substrate as one or more NMOS transistors. Dual etch stop layers may also be formed over the PMOS and/or the NMOS transistors.

    Abstract translation: 提供具有局部应力源的诸如PMOS晶体管的半导体器件。 凹槽形成在栅电极的相对侧上,使得凹槽通过假间隔件从栅电极偏移。 这些凹部填充有应力诱导层。 去除虚拟凹槽并形成轻掺杂的排水沟。 此后,形成新的间隔物并且应力诱导层凹陷。 可以执行一个或多个附加植入物以完成源极/漏极区域。 在一个实施例中,PMOS晶体管可以形成在与一个或多个NMOS晶体管相同的衬底上。 也可以在PMOS和/或NMOS晶体管上形成双重蚀刻停止层。

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