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    • 1. 发明授权
    • MEMS based contact conductivity electrostatic chuck
    • 基于MEMS的接触导电静电卡盘
    • US06905984B2
    • 2005-06-14
    • US10683679
    • 2003-10-10
    • Peter L. KellermanShu QinErnie AllenDouglas A. Brown
    • Peter L. KellermanShu QinErnie AllenDouglas A. Brown
    • H01L21/683H01L21/00
    • H01L21/6831Y10S438/964
    • The present invention is directed to a method for clamping and processing a semiconductor substrate using a semiconductor processing apparatus. According to one aspect of the present invention, a multi-polar electrostatic chuck and associated method is disclosed which provides heating or cooling of a substrate by thermal contact conduction between the electrostatic chuck and the substrate. The multi-polar electrostatic chuck includes a semiconductor platform having a plurality of protrusions that define gaps therebetween, wherein a surface roughness of the plurality of protrusions is less than 100 Angstroms. The electrostatic chuck further includes a voltage control system operable to control a voltage applied to the electrostatic chuck to thus control a contact heat transfer coefficient of the electrostatic chuck, wherein the heat transfer coefficient of the electrostatic chuck is primarily a function of a contact pressure between the substrate and the plurality of protrusions.
    • 本发明涉及使用半导体处理装置夹持和处理半导体衬底的方法。 根据本发明的一个方面,公开了一种多极静电卡盘和相关方法,其通过静电卡盘和基板之间的热接触传导来提供加热或冷却基板。 多极静电卡盘包括具有多个突起的半导体平台,所述突起在其间形成间隙,其中多个突起的表面粗糙度小于100埃。 静电卡盘还包括电压控制系统,其可操作以控制施加到静电卡盘的电压,从而控制静电卡盘的接触传热系数,其中静电卡盘的传热系数主要是介于静电卡盘之间的接触压力的函数 基板和多个突起。
    • 2. 发明授权
    • Clamping and de-clamping semiconductor wafers on a J-R electrostatic chuck having a micromachined surface by using force delay in applying a single-phase square wave AC clamping voltage
    • 在具有微加工表面的J-R静电卡盘上夹紧和去夹紧半导体晶片,通过在施加单相方波交流钳位电压时使用力延迟
    • US07072166B2
    • 2006-07-04
    • US10661180
    • 2003-09-12
    • Shu QinPeter L. Kellerman
    • Shu QinPeter L. Kellerman
    • H01H1/00
    • H01L21/6833
    • The present invention is directed to a method and a system for clamping a wafer to a J-R electrostatic chuck using a single-phase square wave AC clamping voltage. The method comprises determining a single-phase square wave clamping voltage for the J-R electrostatic chuck, wherein the determination is based, at least in part, on a minimum residual clamping force associated with the wafer and the electrostatic chuck and a surface topography of a leaky dielectric layer associated therewith. The wafer is placed on the electrostatic chuck; and the determined clamping voltage is applied to the electrostatic chuck, therein electrostatically clamping the wafer to the electrostatic chuck, wherein at least the minimum residual clamping force is maintained during a polarity switch of the single-phase square wave clamping voltage. The determination of the surface topography comprises a first gap and a second gap between the wafer and the electrostatic chuck and an island area ratio, wherein a difference in RC time constants associated with the respective first gap and second gap is provided such that at least the minimum residual clamping force is maintained during the polarity switch. Upon removal of the square wave clamping voltage, the de-clamping time is substantially reduced, and corresponds to the pulse width of the square wave clamping voltage.
    • 本发明涉及一种使用单相方波交流钳位电压将晶片夹持到J-R静电卡盘的方法和系统。 该方法包括确定用于JR静电卡盘的单相方波钳位电压,其中所述确定至少部分地基于与晶片和静电卡盘相关联的最小剩余夹持力和泄漏的表面形貌 与之相关的电介质层。 将晶片放置在静电卡盘上; 并且将确定的钳位电压施加到静电卡盘,其中将晶片静电夹持到静电卡盘,其中在单相方波钳位电压的极性开关期间至少保持最小的剩余钳位力。 表面形貌的确定包括晶片和静电卡盘之间的第一间隙和第二间隙以及岛面积比,其中提供与相应的第一间隙和第二间隙相关联的RC时间常数的差异,使得至少 在极性开关期间维持最小的剩余夹紧力。 在去除方波钳位电压时,去夹紧时间大大降低,并且对应于方波钳位电压的脉冲宽度。
    • 3. 发明授权
    • MEMS based multi-polar electrostatic chuck
    • 基于MEMS的多极静电卡盘
    • US07072165B2
    • 2006-07-04
    • US10642939
    • 2003-08-18
    • Peter L. KellermanShu QinDouglas A. Brown
    • Peter L. KellermanShu QinDouglas A. Brown
    • H01L21/683
    • H01L21/6875H01L21/6833
    • The present invention is directed to a semiconductor processing apparatus and a method for clamping a semiconductor substrate and controlling a heat transfer associated therewith. According to one aspect of the present invention, a multi-polar electrostatic chuck and associated method is disclosed which provides a controlled and uniform heat transfer coefficient across a surface thereof. The multi-polar electrostatic chuck comprises a semiconductor platform having a plurality of protrusions that define gaps therebetween, wherein a distance or depth of the gaps is uniform and associated with a mean free path of the cooling gas therein. The electrostatic chuck is permits a control of a backside pressure of a cooling gas within the plurality of gaps to thus control a heat transfer coefficient of the cooling gas. The plurality of protrusions further provide a uniform contact surface, wherein a contact conductivity between the plurality of protrusions and the substrate is controllable and significantly uniform across the substrate.
    • 本发明涉及一种用于夹持半导体衬底并控制与之相关的热传递的半导体处理装置和方法。 根据本发明的一个方面,公开了一种多极静电卡盘和相关方法,其提供跨越其表面的受控且均匀的传热系数。 多极静电卡盘包括具有限定间隙的多个突起的半导体平台,其中间隙的距离或深度是均匀的,并且与其中的冷却气体的平均自由路径相关联。 静电吸盘可以控制多个间隙内的冷却气体的背侧压力,从而控制冷却气体的传热系数。 多个突起还提供均匀的接触表面,其中多个突起和基底之间的接触导电性在基底上是可控的和显着均匀的。
    • 5. 发明授权
    • Method of making a MEMS electrostatic chuck
    • 制造MEMS静电卡盘的方法
    • US06946403B2
    • 2005-09-20
    • US10695153
    • 2003-10-28
    • Peter L. KellermanShu QinErnie AllenDouglas A. Brown
    • Peter L. KellermanShu QinErnie AllenDouglas A. Brown
    • H01L21/683H01L21/469
    • H01L21/6833
    • The present invention is directed to a method of forming a clamping plate for a multi-polar electrostatic chuck. The method comprises forming a first electrically conductive layer over a semiconductor platform and defining a plurality of portions of the first electrically conductive layer which are electrically isolated from one another. A first electrically insulative layer is formed over the first electrically conductive layer, the first electrically insulative layer comprising a top surface having a plurality of MEMS protrusions extending a first distance therefrom. A plurality of poles are furthermore electrically connected to the respective plurality of portions of the first electrically conductive layer, wherein a voltage applied between the plurality of poles is operable to induce an electrostatic force in the clamping plate.
    • 本发明涉及一种形成多极静电卡盘夹紧板的方法。 该方法包括在半导体平台上形成第一导电层,并且限定彼此电隔离的第一导电层的多个部分。 第一电绝缘层形成在第一导电层之上,第一电绝缘层包括具有从其延伸第一距离的多个MEMS突起的顶表面。 多个极还电连接到第一导电层的相应多个部分,其中施加在多个极之间的电压可操作以在夹持板中引起静电力。