发明申请
US20110008145A1 METHOD OF, AND APPARATUS FOR, SEPARATING WAFERS FROM A WAFER STACK 审中-公开
用于从WAFER STACK隔离WAF的方法和装置

  • 专利标题: METHOD OF, AND APPARATUS FOR, SEPARATING WAFERS FROM A WAFER STACK
  • 专利标题(中): 用于从WAFER STACK隔离WAF的方法和装置
  • 申请号: US12814200
    申请日: 2010-06-11
  • 公开(公告)号: US20110008145A1
    公开(公告)日: 2011-01-13
  • 发明人: Reinhard Huber
  • 申请人: Reinhard Huber
  • 申请人地址: DE Freudenstadt
  • 专利权人: Gebr. Schmid GmbH & Co.
  • 当前专利权人: Gebr. Schmid GmbH & Co.
  • 当前专利权人地址: DE Freudenstadt
  • 优先权: DE102007061410.3 20071211
  • 主分类号: H01L21/67
  • IPC分类号: H01L21/67 B65G59/02
METHOD OF, AND APPARATUS FOR, SEPARATING WAFERS FROM A WAFER STACK
摘要:
In a method of separating wafers (12) from a vertical wafer stack (16), the wafers (12) are transported away individually from above via movement means (23). The movement means (23) include circulating belts (24), with a suction surface (25) against which the uppermost wafer (12) abuts, the abutment of the wafer against the suction surface (25) being enhanced by negative pressure. To separate a plurality of wafers (12) located one upon another, the movement means (23) are subjected to at least one of the following two steps: a) water (30) is forcefully jetted against the leading edge of the uppermost wafer (12), the water being directed obliquely from beneath the latter, or b) the movement means (23) guide the wafer (12) over a stripping device (32) which butts against the underside of the moving wafer and both forces the wafer against the suction surface (25) and generates a braking action thereon. Thereafter, the wafer (12) is moved to a transporting path (35, 37) to be transported for further processing.
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