公开(公告)号：US06893507B2

公开(公告)日：2005-05-17

申请号：US10200465

申请日：2002-07-18

申请人： Matthew G. Goodman ,  Ivo Raaijmakers ,  Loren R. Jacobs ,  Franciscus B. M. van Bilsen ,  Michael J. Meyer ,  Eric Alan Barrett

发明人： Matthew G. Goodman ,  Ivo Raaijmakers ,  Loren R. Jacobs ,  Franciscus B. M. van Bilsen ,  Michael J. Meyer ,  Eric Alan Barrett

IPC分类号： H01L21/683 ,  C23C16/458 ,  C23C16/48 ,  H01L21/205 ,  H01L21/26 ,  H01L21/687 ,  H01L21/00 ,  C23C16/00

CPC分类号： H01L21/68735 ,  C23C16/4581 ,  C23C16/4585 ,  C23C16/481 ,  H01L21/68721 ,  H01L21/68728 ,  H01L21/68785

摘要： Improvements in the design of a low mass wafer holder are disclosed. The improvements include the use of peripherally located, integral lips to space a wafer or other substrate above the base plate of the wafer holder. A uniform gap is thus provided between the wafer and the base plate, such as will temper rapid heat exchanges, allow gas to flow between the wafer and wafer holder during wafer pick-up, and keep the wafer holder thermally coupled with the wafer. At the same time, thermal disturbance from lip contact with the wafer is reduced. Gas flow during pick-up can be provided through radial channels in a wafer holder upper surface, or through backside gas passages. A thicker ring is provided at the wafer holder perimeter, and is provided in some embodiments as an independent piece to accommodate stresses accompanying thermal gradients. Self-centering mechanisms are provided to keep the wafer holder centered relative to a spider which is subject to differential thermal expansion.

摘要翻译： 公开了一种低质量晶片支架的设计改进。 这些改进包括使用外围定位的整体式唇缘以将晶片或其它基板放置在晶片保持器的基板之上。 因此，在晶片和基板之间提供均匀的间隙，例如将回火快速热交换，允许气体在晶片拾取期间在晶片和晶片保持器之间流动，并保持晶片保持器与晶片热耦合。 同时，与晶片的唇接触的热扰动减小。 拾取期间的气流可以通过晶片保持器上表面中的径向通道或通过背侧气体通道来提供。 在晶片保持器周边处提供较厚的环，并且在一些实施例中作为独立件提供以适应伴随热梯度的应力。 提供自对中机构以保持晶片保持架相对于经受不同热膨胀的蜘蛛座居中。

公开(公告)号：US06454865B1

公开(公告)日：2002-09-24

申请号：US09981537

申请日：2001-10-17

申请人： Matthew G. Goodman ,  Ivo Raaijmakers ,  Loren R. Jacobs ,  Franciscus B. M. van Bilsen ,  Michael J. Meyer ,  Eric Alan Barrett

发明人： Matthew G. Goodman ,  Ivo Raaijmakers ,  Loren R. Jacobs ,  Franciscus B. M. van Bilsen ,  Michael J. Meyer ,  Eric Alan Barrett

IPC分类号： C23C1600

CPC分类号： H01L21/68735 ,  C23C16/4581 ,  C23C16/4585 ,  C23C16/481 ,  H01L21/68721 ,  H01L21/68728 ,  H01L21/68785

摘要： Improvements in the design of a low mass wafer holder are disclosed. The improvements include the use of peripherally located, integral lips to space a wafer or other substrate above the base plate of the wafer holder. A uniform gap is thus provided between the wafer and the base plate, such as will temper rapid heat exchanges, allow gas to flow between the wafer and wafer holder during wafer pick-up, and keep the wafer holder thermally coupled with the wafer. At the same time, thermal disturbance from lip contact with the wafer is reduced. Gas flow during pick-up can be provided through radial channels in a wafer holder upper surface, or through backside gas passages. A thicker ring is provided at the wafer holder perimeter, and is provided in some embodiments as an independent piece to accommodate stresses accompanying thermal gradients. Self-centering mechanisms are provided to keep the wafer holder centered relative to a spider which is subject to differential thermal expansion.