- 专利标题: Method of laser drilling
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申请号: US10076301申请日: 2002-02-19
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公开(公告)号: US06649864B2公开(公告)日: 2003-11-18
- 发明人: Hubert De Steur , Hans Juergen Mayer , Otto Märten , Christian Overmann , Wei Pan , Eddy Roelants , Martin Wehner
- 申请人: Hubert De Steur , Hans Juergen Mayer , Otto Märten , Christian Overmann , Wei Pan , Eddy Roelants , Martin Wehner
- 优先权: DE10145184 20010913
- 主分类号: B23K2600
- IPC分类号: B23K2600
摘要:
In a method for the laser drilling of holes in a circuit substrate with the aid of a perforated mask, a laser beam is moved in the region of the perforated mask on a circular path. The center point of the region lies concentrically with respect to the set position of the respective hole in the mask. Further, the diameter of the region is smaller than the diameter of the hole. At the same time, the diameter of the laser beam spot is chosen to be large enough that it always covers the center point of the perforated mask during the circular motion. As a result, an energy distribution of the laser energy, which is as uniform as possible, is achieved in the region of the perforated mask.
公开/授权文献
- US20030047544A1 Method of laser drilling 公开/授权日:2003-03-13
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