APPARATUS AND METHOD FOR SHIELDING A WAFER FROM CHARGED PARTICLES DURING PLASMA ETCHING
    2.
    发明申请
    APPARATUS AND METHOD FOR SHIELDING A WAFER FROM CHARGED PARTICLES DURING PLASMA ETCHING 审中-公开
    用于在等离子蚀刻期间从带电粒子屏蔽晶片的装置和方法

    公开(公告)号:WO2004053922A3

    公开(公告)日:2004-09-10

    申请号:PCT/GB0305265

    申请日:2003-12-02

    Applicant: IBM IBM UK

    CPC classification number: H01J37/32623 H01J37/3266

    Abstract: 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

    Abstract translation: 一种等离子体蚀刻系统,其具有带磁体的晶圆吸盘,该磁体在晶圆上施加磁场以将晶圆从带电粒子屏蔽。 磁场与晶圆平行,在晶圆表面附近最强。 磁场可以是直的,也可以是圆形的。 在操作中,电子通过洛伦兹力从晶片偏转,晶片获得正电荷,并且离子通过静电排斥偏转。 允许中性物质通过磁场,并与晶圆碰撞。 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。 而且,磁场可以保护晶片避免设计成从腔室表面清洗不需要的膜的调味过程,因为调味过程通常依赖于带电粒子的蚀刻

    Apparatus and method for shielding wafer from charged particles during plasma etching
    6.
    发明专利
    Apparatus and method for shielding wafer from charged particles during plasma etching 有权
    用于在等离子体蚀刻期间从充电颗粒屏蔽波浪的装置和方法

    公开(公告)号:JP2010251799A

    公开(公告)日:2010-11-04

    申请号:JP2010167117

    申请日:2010-07-26

    CPC classification number: H01J37/32623 H01J37/3266

    Abstract: PROBLEM TO BE SOLVED: To provide a plasma etching system having a wafer chuck including a magnet that applies a magnetic field over a wafer to shield the wafer from charged particles.
    SOLUTION: The magnetic field is parallel to the wafer, and the intensity thereof is highest 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 is positively charged, and ions are deflected by electrostatic repulsion. Neutral chemical species are allowed to pass through the magnetic field, and collide with the wafer. Neutral chemical species generally provide higher isotropic and material-selective etching than charged particles, so that this magnetic field tends to increase etching isotropy and material selectivity. The magnetic field can protect the wafer from seasoning processes designed to remove unwanted films from the chamber surface because seasoning processes generally rely on etching by charged particles.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种具有晶片卡盘的等离子体蚀刻系统,该晶片卡盘包括在晶片上施加磁场以使晶片免受带电粒子的磁体。

    解决方案:磁场平行于晶片,其强度在晶片表面附近最高。 磁场可以是直的或圆形的。 在操作中,电子通过洛仑兹力从晶片偏转,晶片带正电,离子被静电排斥偏转。 允许中性化学物质通过磁场,并与晶片碰撞。 中性化学物质通常提供比带电粒子更高的各向同性和材料选择性蚀刻,使得该磁场倾向于增加蚀刻各向同性和材料选择性。 磁场可以保护晶片免受设计用于从腔室表面去除不需要的膜的调味过程,因为调味过程通常依赖于带电粒子的蚀刻。 版权所有(C)2011,JPO&INPIT

    WIRING STRUCTURE FOR INTEGRATED CIRCUIT WITH REDUCED INTRALEVEL CAPACITANCE
    8.
    发明申请
    WIRING STRUCTURE FOR INTEGRATED CIRCUIT WITH REDUCED INTRALEVEL CAPACITANCE 审中-公开
    具有降低入侵电容的集成电路的接线结构

    公开(公告)号:WO2005104212A3

    公开(公告)日:2006-07-20

    申请号:PCT/US2005013601

    申请日:2005-04-21

    Abstract: A method of forming a wiring structure for an integrated circuit includes the steps of forming a plurality of features (16) in a layer of dielectric material (13), and forming spacers (20) on sidewalls (16s) of the features. Conductors (25) are then formed in the features, being separated from the sidewalls by the spacers. The spacers are then removed, forming air gaps (40) at the sidewalls so that the conductors are separated from the sidewalls by the air gaps. Dielectric layers (42, 12) above and below the conductors may be low-k dielectrics having a dielectric constant less than that of the dielectric between the conductors. A cross-section of each of the conductors (25) has a bottom in contact with a low-k dielectric layer (12), a top in contact with another low-k dielectric (42), and sides in contact only with the air gaps (40). The air gaps serve to reduce the intralevel capacitance.

    Abstract translation: 形成用于集成电路的布线结构的方法包括以下步骤:在介电材料层(13)中形成多个特征(16),以及在特征的侧壁(16s)上形成间隔物(20)。 然后,导体(25)形成在特征中,通过间隔件与侧壁分离。 然后去除间隔物,在侧壁处形成气隙(40),使得导体通过气隙与侧壁分离。 在导体上方和下方的介电层(42,12)可以是介电常数小于导体之间的电介质的介电常数的低k电介质。 每个导体(25)的横截面具有与低k电介质层(12)接触的底部,与另一低k电介质(42)接触的顶部和仅与空气接触的侧面 间隙(40)。 气隙用于降低电容值。

    10.
    发明专利
    未知

    公开(公告)号:AT504079T

    公开(公告)日:2011-04-15

    申请号:AT05746299

    申请日:2005-04-21

    Applicant: IBM

    Abstract: A method of forming a wiring structure for an integrated circuit includes the steps of forming a plurality of features in a layer of dielectric material, and forming spacers on sidewalls of the features. Conductors are then formed in the features, being separated from the sidewalls by the spacers. The spacers are then removed, forming air gaps at the sidewalls so that the conductors are separated from the sidewalls by the air gaps. Dielectric layers above and below the conductors may be low-k dielectrics having a dielectric constant less than that of the dielectric between the conductors. A cross-section of each of the conductors has a bottom in contact with the a low-k dielectric layer, a top in contact with another low-k dielectric, and sides in contact only with the air gaps. The air gaps serve to reduce the intralevel capacitance.

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