Methods and assemblies for gas flow ratio control

    公开(公告)号:US11462426B2

    公开(公告)日:2022-10-04

    申请号:US16659332

    申请日:2019-10-21

    Abstract: In embodiments, a process gas supply provides a carrier gas and one or more process gases to a distribution manifold. A back pressure sensor senses back pressure in the distribution manifold and provides a signal to the first controller based at least in part on the back pressure. The first controller determines a back pressure set point based at least in part on the signal. One or more mass flow controllers control the flow of the gas mixture comprising the carrier gas and the one or more process gases into one or more zones of the process chamber. An upstream pressure controller fluidly and operatively connected to the distribution manifold controls flow of the carrier gas based on the back pressure set point.

    MASS FLOW VERIFICATON BASED ON RATE OF PRESSURE DECAY

    公开(公告)号:US20210080313A1

    公开(公告)日:2021-03-18

    申请号:US17247091

    申请日:2020-11-30

    Abstract: An electronic device manufacturing system includes: a gas supply; a mass flow controller (MFC) coupled to the gas supply; an inlet coupled to the MFC; an outlet; a control volume serially coupled to the inlet to receive a gas flow; and a flow restrictor serially coupled to the control volume and the outlet. A controller is adapted to allow the gas supply to flow gas through the control volume and the flow restrictor to achieve a stable pressure in the control volume, terminate the gas flow from the gas supply, and measure a rate of pressure decay in the control volume over time. A process chamber is coupled to a flow path, which is coupled to the mass flow controller, the process chamber to receive one or more process chemistries via the mass flow controller.

    Methods and assemblies for gas flow ratio control

    公开(公告)号:US10943803B2

    公开(公告)日:2021-03-09

    申请号:US16293341

    申请日:2019-03-05

    Abstract: Methods and gas flow control assemblies configured to deliver gas to process chamber zones in desired flow ratios. In some embodiments, assemblies include one or more MFCs and a back pressure controller (BPC). Assemblies includes a controller, a process gas supply, a distribution manifold, a pressure sensor coupled to the distribution manifold and configured to sense back pressure of the distribution manifold, a process chamber, a one or more mass flow controllers connected between the distribution manifold and process chamber to control gas flow there between, and a back pressure controller provided in fluid parallel relationship to the one or more mass flow controllers, wherein precise flow ratio control is achieved. Alternate embodiments include an upstream pressure controller configured to control flow of carrier gas to control back pressure. Further methods and assemblies for controlling zonal gas flow ratios are described, as are other aspects.

    Methods and apparatus for deposition processes

    公开(公告)号:US10260164B2

    公开(公告)日:2019-04-16

    申请号:US15595079

    申请日:2017-05-15

    Abstract: Methods and apparatus for deposition processes are provided herein. In some embodiments, an apparatus may include a substrate support comprising a susceptor plate having a pocket disposed in an upper surface of the susceptor plate and having a lip formed in the upper surface and circumscribing the pocket, the lip configured to support a substrate on the lip; and a plurality of vents extending from the pocket to the upper surface of the susceptor plate to exhaust gases trapped between the backside of the substrate and the pocket when a substrate is disposed on the lip. Methods of utilizing the inventive apparatus for depositing a layer on a substrate are also disclosed.

    Self-aligned process for sub-10nm fin formation

    公开(公告)号:US10224421B2

    公开(公告)日:2019-03-05

    申请号:US15933072

    申请日:2018-03-22

    Abstract: Methods of sub-10 nm fin formation are disclosed. One method includes patterning a first dielectric layer on a substrate to form one or more projections and a first plurality of spaces, and depositing a first plurality of columns in the first plurality of spaces. The first plurality of columns are separated by a second plurality of spaces. The method also includes depositing a second dielectric layer in the second plurality of spaces to form a plurality of dummy fins, removing the first plurality of columns to form a third plurality of spaces, depositing a second plurality of columns in the third plurality of spaces, removing the one or more projections and the plurality of dummy fins to form a fourth plurality of spaces, and depositing a plurality of fins in the fourth plurality of spaces. The plurality of fins have a width between 5-10 nm.

    METHODS AND ASSEMBLIES FOR GAS FLOW RATIO CONTROL

    公开(公告)号:US20170271184A1

    公开(公告)日:2017-09-21

    申请号:US15070342

    申请日:2016-03-15

    CPC classification number: H01L21/67253 G05D11/132 H01L21/67017

    Abstract: Methods and gas flow control assemblies configured to deliver gas to process chamber zones in desired flow ratios. In some embodiments, assemblies include one or more MFCs and a back pressure controller (BPC). Assemblies includes a controller, a process gas supply, a distribution manifold, a pressure sensor coupled to the distribution manifold and configured to sense back pressure of the distribution manifold, a process chamber, a one or more mass flow controllers connected between the distribution manifold and process chamber to control gas flow there between, and a back pressure controller provided in fluid parallel relationship to the one or more mass flow controllers, wherein precise flow ratio control is achieved. Alternate embodiments include an upstream pressure controller configured to control flow of carrier gas to control back pressure. Further methods and assemblies for controlling zonal gas flow ratios are described, as are other aspects.

    Epitaxy of high tensile silicon alloy for tensile strain applications
    19.
    发明授权
    Epitaxy of high tensile silicon alloy for tensile strain applications 有权
    用于拉伸应变应用的高强度硅合金的外延

    公开(公告)号:US09460918B2

    公开(公告)日:2016-10-04

    申请号:US14133148

    申请日:2013-12-18

    Abstract: Embodiments of the present invention generally relate to methods for forming silicon epitaxial layers on semiconductor devices. The methods include forming a silicon epitaxial layer on a substrate at increased pressure and reduced temperature. The silicon epitaxial layer has a phosphorus concentration of about 1×1021 atoms per cubic centimeter or greater, and is formed without the addition of carbon. A phosphorus concentration of about 1×1021 atoms per cubic centimeter or greater increases the tensile strain of the deposited layer, and thus, improves channel mobility. Since the epitaxial layer is substantially free of carbon, the epitaxial layer does not suffer from film formation and quality issues commonly associated with carbon-containing epitaxial layers.

    Abstract translation: 本发明的实施例一般涉及在半导体器件上形成硅外延层的方法。 所述方法包括在增加的压力和降低的温度下在衬底上形成硅外延层。 硅外延层的磷浓度约为1×1021原子/立方厘米或更大,并且不添加碳形成。 大约1×1021原子/立方厘米或更大的磷浓度增加沉积层的拉伸应变,从而提高通道迁移率。 由于外延层基本上不含碳,外延层不会受到成膜和通常与含碳外延层相关的质量问题的影响。

    LIGHT PIPE WINDOW STRUCTURE FOR LOW PRESSURE THERMAL PROCESSES
    20.
    发明申请
    LIGHT PIPE WINDOW STRUCTURE FOR LOW PRESSURE THERMAL PROCESSES 审中-公开
    用于低压热工艺的轻质管道结构

    公开(公告)号:US20150340257A1

    公开(公告)日:2015-11-26

    申请号:US14645883

    申请日:2015-03-12

    Abstract: Embodiments disclosed herein relate to a light pipe structure for thermal processing of semiconductor substrates. In one embodiment, a light pipe window structure for use in a thermal process chamber includes a transparent plate, and a plurality of light pipe structures formed in a transparent material that is coupled to the transparent plate, each of the plurality of light pipe structures comprising a reflective surface and having a longitudinal axis disposed in a substantially perpendicular relation to a plane of the transparent plate.

    Abstract translation: 本文公开的实施例涉及用于半导体衬底的热处理的光管结构。 在一个实施例中,用于热处理室的光管窗结构包括透明板和形成在透明材料中的多个光管结构,所述多个光管结构联接到透明板,所述多个光管结构中的每一个包括 反射表面并且具有设置在与透明板的平面基本上垂直的方向上的纵向轴线。

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