Apparatus and method for shielding a wafer from charged particles during plasma etching
    4.
    发明申请
    Apparatus and method for shielding a wafer from charged particles during plasma etching 失效
    在等离子体蚀刻期间屏蔽晶片与带电粒子的装置和方法

    公开(公告)号:US20060037940A1

    公开(公告)日:2006-02-23

    申请号:US11260375

    申请日:2005-10-28

    IPC分类号: C23F1/00 H01L21/306

    CPC分类号: H01J37/32623 H01J37/3266

    摘要: A plasma etching system having a wafer chuck with a magnet that applies a magnetic field over a wafer to shield the wafer from charged particles. The magnetic field is parallel with the wafer, and is strongest near the wafer surface. The magnetic field may be straight, or circular. In operation, electrons are deflected from the wafer by the Lorentz force, the wafer acquires a positive charge, and ions are deflected by electrostatic repulsion. Neutral species are allowed through the magnetic field, and they collide with the wafer. Neutral species generally provide more isotropic and material-selective etching than charged particles, so the present magnetic field tends to increase etch isotropy and material selectivity. Also, the magnetic field can protect the wafer from seasoning processes designed to clean unwanted films from the chamber surface as seasoning processes typically rely on etching by charged particles.

    摘要翻译: 一种等离子体蚀刻系统,其具有带有磁体的晶片卡盘,该磁体在晶片上施加磁场以将晶片免受带电粒子的影响。 磁场与晶片平行,并且在晶片表面附近最强。 磁场可以是直的或圆形的。 在操作中,电子通过洛伦兹力从晶片偏转,晶片获得正电荷,离子被静电排斥偏转。 允许中性物质通过磁场,并且它们与晶片碰撞。 中性物质通常提供比带电粒子更多的各向同性和材料选择性蚀刻,因此目前的磁场倾向于增加蚀刻各向同性和材料选择性。 此外,由于调味过程通常依赖于带电粒子的蚀刻,所以磁场可以保护晶片免受调节过程的调节过程,以便从室表面清洁不需要的膜。

    Apparatus and method for shielding a wafer from charged particles during plasma etching
    5.
    发明授权
    Apparatus and method for shielding a wafer from charged particles during plasma etching 失效
    在等离子体蚀刻期间屏蔽晶片与带电粒子的装置和方法

    公开(公告)号:US07438822B2

    公开(公告)日:2008-10-21

    申请号:US11260375

    申请日:2005-10-28

    IPC分类号: C23F1/00

    CPC分类号: H01J37/32623 H01J37/3266

    摘要: A plasma etching system having a wafer chuck with a magnet that applies a magnetic field over a wafer to shield the wafer from charged particles. The magnetic field is parallel with the wafer, and is strongest near the wafer surface. The magnetic field may be straight, or circular. In operation, electrons are deflected from the wafer by the Lorentz force, the wafer acquires a positive charge, and ions are deflected by electrostatic repulsion. Neutral species are allowed through the magnetic field, and they collide with the wafer. Neutral species generally provide more isotropic and material-selective etching than charged particles, so the present magnetic field tends to increase etch isotropy and material selectivity. Also, the magnetic field can protect the wafer from seasoning processes designed to clean unwanted films from the chamber surface as seasoning processes typically rely on etching by charged particles.

    摘要翻译: 一种等离子体蚀刻系统,其具有带有磁体的晶片卡盘,该磁体在晶片上施加磁场以将晶片免受带电粒子的影响。 磁场与晶片平行,并且在晶片表面附近最强。 磁场可以是直的或圆形的。 在操作中,电子通过洛伦兹力从晶片偏转,晶片获得正电荷,离子被静电排斥偏转。 允许中性物质通过磁场,并且它们与晶片碰撞。 中性物质通常提供比带电粒子更多的各向同性和材料选择性蚀刻,因此目前的磁场倾向于增加蚀刻各向同性和材料选择性。 此外,由于调味过程通常依赖于带电粒子的蚀刻,所以磁场可以保护晶片免受调节过程的调节过程,以便从室表面清洁不需要的膜。

    Endpoint detection for the patterning of layered materials
    6.
    发明授权
    Endpoint detection for the patterning of layered materials 有权
    分层材料图案化的端点检测

    公开(公告)号:US07285775B2

    公开(公告)日:2007-10-23

    申请号:US10904883

    申请日:2004-12-02

    IPC分类号: G01N23/227

    CPC分类号: G01N23/227 H01L22/26

    摘要: Photoelectron emissions are used to detect an endpoint of a thickness alteration of a topmost layer in a set of layers undergoing patterning. The set of layers are irradiated, which causes an emission of photoelectrons. Upon receipt of or absence of a photoelectron emission, patterning endpoint is detected.

    摘要翻译: 光电子发射用于检测经历图案化的一组层中最上层的厚度变化的端点。 该层被照射,这导致光电子的发射。 在接收到或不存在光电子发射时,检测到图案化端点。

    SILICON NITRIDE ETCHING METHODS
    7.
    发明申请
    SILICON NITRIDE ETCHING METHODS 有权
    硅氮蚀刻方法

    公开(公告)号:US20060252269A1

    公开(公告)日:2006-11-09

    申请号:US10908252

    申请日:2005-05-04

    IPC分类号: H01L21/461 H01L21/302

    CPC分类号: H01L21/31116 H01L21/3185

    摘要: Methods of etching silicon nitride material, and more particularly, etching nitride selective to silicon dioxide or silicide, are disclosed. The methods include exposing a substrate having silicon nitride thereon to a plasma including at least one fluorohydrocarbon and a non-carbon containing fluorine source such as sulfur hexafluoride (SF6). The plasma may also include oxygen (O2) and the fluorohydrocarbons may include at least one of: trifluoromethane (CHF3), difluoromethane (CH2F2), and methyl fluoride (CH3F). In an alternative embodiment, the plasma includes one of hydrogen (H2) and nitrogen trifluoride (NF3) and one of tetrafluoromethane (CF4) and octafluorocyclobutane (C4F8). The methods are preferably carried out using a low bias voltage, e.g.

    摘要翻译: 公开了蚀刻氮化硅材料的方法,更具体地说,蚀刻对二氧化硅或硅化物有选择性的氮化物。 所述方法包括将其上具有氮化硅的衬底暴露于包括至少一种氟代烃和不含碳的氟源如六氟化硫(SF 6 N 6)的等离子体。 等离子体还可以包括氧(O 2 H 2),并且氟代烃可以包括以下中的至少一种:三氟甲烷(CHF 3 N 3),二氟甲烷(CH 2 N 2) > F 2)和氟化氟(CH 3 N 3 F)。 在替代实施方案中,等离子体包括氢(H 2 H 2)和三氟化氮(NF 3 N)之一和四氟甲烷(CF 3 SO 3) )和八氟环丁烷(C 4 H 8 F 8)。 该方法优选使用低偏置电压进行,例如, <100 V.

    METHOD AND APPARATUS FOR PRECISE TEMPERATURE CYCLING IN CHEMICAL/BIOCHEMICAL PROCESSES
    8.
    发明申请
    METHOD AND APPARATUS FOR PRECISE TEMPERATURE CYCLING IN CHEMICAL/BIOCHEMICAL PROCESSES 审中-公开
    化学/生物过程中精确温度循环的方法和装置

    公开(公告)号:US20060154280A1

    公开(公告)日:2006-07-13

    申请号:US11307936

    申请日:2006-02-28

    IPC分类号: C12Q1/68 C12P19/34

    摘要: A method for implementing a temperature cycling operation for a biochemical sample to be reacted includes applying an infrared (IR) heating source to the sample at a first infrared wavelength selected so as to generate a first desired temperature for a first duration and produce a first desired reaction within the sample. Following the first desired reaction, applying the infrared (IR) heating source to the sample at a second infrared wavelength selected so as to generate a second desired temperature for a second duration and produce a second desired reaction within the sample.

    摘要翻译: 用于实施待反应的生物化学样品的温度循环操作的方法包括以选择的第一红外波长将红外(IR)加热源施加到样品,以便产生第一期望温度并产生第一期望值 样品内的反应。 在第一期望的反应之后,将红外(IR)加热源以选择的第二红外波长施加到样品,以便产生第二期望温度并在样品内产生第二期望的反应。

    METHOD AND APPARATUS FOR PRECISE TEMPERATURE CYCLING IN CHEMICAL/BIOCHEMICAL PROCESSES
    9.
    发明申请
    METHOD AND APPARATUS FOR PRECISE TEMPERATURE CYCLING IN CHEMICAL/BIOCHEMICAL PROCESSES 审中-公开
    化学/生物过程中精确温度循环的方法和装置

    公开(公告)号:US20050244933A1

    公开(公告)日:2005-11-03

    申请号:US10709318

    申请日:2004-04-28

    摘要: A method for implementing a temperature cycling operation for a biochemical sample to be reacted includes applying an infrared (IR) heating source to the sample at a first infrared wavelength selected so as to generate a first desired temperature for a first duration and produce a first desired reaction within the sample. Following the first desired reaction, applying the infrared (IR) heating source to the sample at a second infrared wavelength selected so as to generate a second desired temperature for a second duration and produce a second desired reaction within the sample.

    摘要翻译: 用于实施待反应的生物化学样品的温度循环操作的方法包括以选择的第一红外波长将红外(IR)加热源施加到样品,以便产生第一期望温度并产生第一期望值 样品内的反应。 在第一期望的反应之后,将红外(IR)加热源以选择的第二红外波长施加到样品,以便产生第二期望温度并在样品内产生第二期望的反应。

    Method of improving etch uniformity in deep silicon etching
    10.
    发明授权
    Method of improving etch uniformity in deep silicon etching 失效
    提高深硅蚀刻蚀刻均匀性的方法

    公开(公告)号:US06806200B2

    公开(公告)日:2004-10-19

    申请号:US10291951

    申请日:2002-11-08

    IPC分类号: H01L21302

    CPC分类号: H01L21/3065

    摘要: A method is disclosed for improving etch uniformity in deep silicon etching of a monocrystalline silicon wafer. Such method includes forming a pad dielectric layer on a wafer including monocrystalline silicon, forming a silicon layer over the pad dielectric layer, and then applying a clamp to an edge of the wafer. The silicon layer is then removed except in areas protected by the clamp. Thereafter, a hardmask layer is applied and patterned on the wafer; and the wafer is then directionally etched with the patterned hardmask to etch trenches in the monocrystalline silicon. In such manner, a source of silicon (in the silicon layer) is provided at the wafer edge, such that the silicon loading is improved. In addition, the silicon layer at the wafer edge forms a blocking layer which prevents formation of black silicon.

    摘要翻译: 公开了一种用于改善单晶硅晶片的深硅蚀刻中的蚀刻均匀性的方法。 这种方法包括在包括单晶硅的晶片上形成焊盘电介质层,在焊盘介电层上形成硅层,然后在晶片的边缘上施加夹具。 然后除去在被夹具保护的区域之外除去硅层。 此后,将硬掩模层施加和图案化在晶片上; 然后用图案化的硬掩模对晶片进行定向蚀刻,以蚀刻单晶硅中的沟槽。以这种方式,在晶片边缘处提供硅源(在硅层中),使得硅负载得到改善。 此外,晶片边缘处的硅层形成防止形成黑色硅的阻挡层。