Method for etching a poly-silicon layer of a semiconductor wafer
    1.
    发明授权
    Method for etching a poly-silicon layer of a semiconductor wafer 有权
    蚀刻半导体晶片的多晶硅层的方法

    公开(公告)号:US06197698B1

    公开(公告)日:2001-03-06

    申请号:US09340400

    申请日:1999-06-28

    IPC分类号: H01L213065

    摘要: The present invention provides a method for etching a poly-silicon layer of a semiconductor wafer. The semiconductor wafer comprises a dielectric layer, a poly-silicon layer situated on the dielectric layer and containing dopants to a predetermined depth, and a photo-resist layer having a rectangular cross-section above a predetermined area of the poly-silicon layer. The semiconductor wafer is processed in a plasma chamber. A first dry-etching process is performed to vertically etch away the dopant-containing portion of the poly-silicon layer not covered by the photo-resist layer. Then, a second dry-etching process is performed to vertically etch away the residual portion of the poly-silicon layer not covered by the photo-resist layer down to the surface of the dielectric layer. The etching gases used in the first dry-etching process differ from those used in the second dry-etching process, and the main etching gas of the first dry-etching process is C2F6.

    摘要翻译: 本发明提供一种蚀刻半导体晶片的多晶硅层的方法。 半导体晶片包括电介质层,位于电介质层上的多晶硅层,并且含有预定深度的掺杂剂,以及在多晶硅层的预定区域之上具有矩形横截面的光致抗蚀剂层。 半导体晶片在等离子体室中进行处理。 执行第一干蚀刻工艺以垂直蚀刻掉未被光致抗蚀剂层覆盖的多晶硅层的含掺杂物部分。 然后,进行第二干法蚀刻工艺,以将未被光刻胶层覆盖的多晶硅层的剩余部分垂直蚀刻掉到电介质层的表面。 在第一干蚀刻工艺中使用的蚀刻气体与第二干蚀刻工艺中使用的蚀刻气体不同,第一干法蚀刻工艺的主蚀刻气体为C2F6。

    Oxide etching method
    2.
    发明授权
    Oxide etching method 有权
    氧化物蚀刻法

    公开(公告)号:US5994233A

    公开(公告)日:1999-11-30

    申请号:US172507

    申请日:1998-10-14

    CPC分类号: H01L21/31116

    摘要: An oxide etching method using low-medium density plasma includes a first etching step to pre-etch the oxide layer with low etching selectivity etchant to pre-form a contact opening and a monitoring opening. The low etching selectivity etchant can also etch the photoresist layer and the photoresist reaction residue. Then, a second etching with high etching selectivity on the oxide is performed to completely form the contact opening with a SAC property and the monitoring opening. The openings expose the substrate.

    摘要翻译: 使用低介质密度等离子体的氧化物蚀刻方法包括用低蚀刻选择性蚀刻剂预蚀刻氧化物层以预先形成接触开口和监测开口的第一蚀刻步骤。 低蚀刻选择性蚀刻剂也可以蚀刻光致抗蚀剂层和光致抗蚀剂反应残余物。 然后,执行对氧化物具有高蚀刻选择性的第二蚀刻,以完全形成具有SAC特性和监测开口的接触开口。 开口露出基板。

    Method for forming a borderless contact hole
    3.
    发明授权
    Method for forming a borderless contact hole 有权
    无边界接触孔的形成方法

    公开(公告)号:US06180532B2

    公开(公告)日:2001-01-30

    申请号:US09213129

    申请日:1998-12-15

    IPC分类号: H01L213065

    摘要: A method for forming a contact hole in a silicon oxide layer formed over a silicon nitride layer and a substrate performs an etching process with an etchant, C4F8/Ar or C4F8/C2F6/Ar, on an inductively coupled plasma etcher. The inductively coupled plasma etcher contains a chamber, a ring, and a roof. The etchant used in the etching process is controlled by conditions that include a C4F8 flow of about 10 to 20 sccm, a CO flow of less than about 100 sccm, and an Ar flow of about 50 to 500 sccm. In the meantime, the conditions of the inductively coupled plasma etcher include a roof temperature of about 150 to 300 ° C., a ring temperature of about 150 to 400 ° C., and a pressure within the chamber of about 4 to 50 mtorr. By performing a plasma etching process under the foregoing conditions, a properly profiled contact hole is obtained.

    摘要翻译: 在形成在氮化硅层和基板上的氧化硅层中形成接触孔的方法在电感耦合等离子体蚀刻器上用蚀刻剂C4F8 / Ar或C4F8 / C2F6 / Ar进行蚀刻处理。 电感耦合等离子体蚀刻器包含一个室,一个环和一个屋顶。 在蚀刻工艺中使用的蚀刻剂由包括约10至20sccm的C 4 F 8流量,小于约100sccm的CO流量和约50至500sccm的Ar流量的条件控制。 同时,电感耦合等离子体蚀刻器的条件包括约150-300℃的屋顶温度,约150-400℃的环境温度和室内压力为约4-50mtorr。 通过在上述条件下进行等离子体蚀刻工艺,可以获得适当的异型接触孔。

    SEMICONDUCTOR PROCESS
    6.
    发明申请
    SEMICONDUCTOR PROCESS 有权
    半导体工艺

    公开(公告)号:US20130137243A1

    公开(公告)日:2013-05-30

    申请号:US13308513

    申请日:2011-11-30

    IPC分类号: H01L21/20

    摘要: First, a substrate with a recess is provided in a semiconductor process. Second, an embedded SiGe layer is formed in the substrate. The embedded SiGe layer includes an epitaxial SiGe material which fills up the recess. Then, a pre-amorphization implant (PAI) procedure is carried out on the embedded SiGe layer to form an amorphous region. Next, a source/drain implanting procedure is carried out on the embedded SiGe layer to form a source doping region and a drain doping region. Later, a source/drain annealing procedure is carried out to form a source and a drain in the substrate. At least one of the pre-amorphization implant procedure and the source/drain implanting procedure is carried out in a cryogenic procedure below −30° C.

    摘要翻译: 首先,在半导体工艺中设置具有凹部的基板。 第二,在衬底中形成嵌入的SiGe层。 嵌入的SiGe层包括填充凹槽的外延SiGe材料。 然后,在嵌入的SiGe层上进行预非晶化植入(PAI)工艺以形成非晶区域。 接下来,在嵌入的SiGe层上进行源极/漏极注入工艺以形成源极掺杂区域和漏极掺杂区域。 之后,进行源极/漏极退火处理以在衬底中形成源极和漏极。 前非晶化植入程序和源极/漏极注入程序中的至少一个在低于-30℃的低温过程中进行。

    Self-aligned contact set
    9.
    发明授权
    Self-aligned contact set 有权
    自对准触点组

    公开(公告)号:US08058733B2

    公开(公告)日:2011-11-15

    申请号:US12825515

    申请日:2010-06-29

    申请人: Chan-Lon Yang

    发明人: Chan-Lon Yang

    IPC分类号: H01L23/48 H01L23/52 H01L29/40

    摘要: A self-aligned contact includes a lower contact disposed in a dielectric layer of a substrate and an upper contact disposed in the dielectric layer and directly on the lower contact, and electrically connected to the lower contact. The profile of the upper contact and the lower contact is zigzag.

    摘要翻译: 自对准触点包括设置在基板的电介质层中的下触点和设置在电介质层中并直接在下触点上的上接触件,并且电连接到下触点。 上触点和下触点的外形为锯齿形。

    Gate etch process
    10.
    发明授权
    Gate etch process 有权
    门蚀刻工艺

    公开(公告)号:US07112834B1

    公开(公告)日:2006-09-26

    申请号:US10791657

    申请日:2004-03-02

    IPC分类号: H01L29/76

    摘要: A method of making a semiconductor structure includes etching an anti-reflective coating layer at a pressure of 10 millitorr or less; etching a nitride layer with a first nitride etch plasma having a first F:C ratio; and etching the nitride layer with a second nitride etch plasma having a second F:C ratio. The first F:C ratio is greater than the second F:C ratio.

    摘要翻译: 制造半导体结构的方法包括在10毫托或更低的压力下蚀刻抗反射涂层; 用具有第一F:C比率的第一氮化物蚀刻等离子体蚀刻氮化物层; 并用具有第二F:C比率的第二氮化物蚀刻等离子体蚀刻氮化物层。 第一F:C比大于第二F:C比。