Title:
半導体装置およびその製造方法
Document Type and Number:
Japanese Patent JP5633581
Kind Code:
B2
Abstract:
A purpose is to reliably laser-weld a plurality of lead frames with less inconsistency, and to improve the visibility of the camera to reduce false detection of the sections to be welded. Arranging the direction (rolling direction) of the rolling traces (19) of each of the lead frames (10, 11) in the same direction allows uniform absorption of the laser beam (14) on each of the lead frames (10, 11), which reduces the fluctuations of laser welding in each of the lead frames (10, 11). As a result, the number of points to be welded can be reduced, lowering the manufacturing costs. In addition, fluctuations in the intensity of the light reflected off of each of the lead frames (10, 11) can be reduced by arranging the direction (rolling direction) of the rolling traces (19) of each of the lead frames (10, 11) in the same direction, which improves the visibility of the camera (25) and reduces false detection of the sections to be welded.
Inventors:
宮坂 利幸
Application Number:
JP2012551794A
Publication Date:
December 03, 2014
Filing Date:
November 14, 2011
Export Citation:
Assignee:
富士電機株式会社
International Classes:
H01L21/60; B23K26/20; H01L23/48; H01L25/07; H01L25/18
Domestic Patent References:
| JP2008042039A | 2008-02-21 | |||
| JP2008028286A | 2008-02-07 | |||
| JP2007134584A | 2007-05-31 | |||
| JPH1166968A | 1999-03-09 | |||
| JP2008042039A | 2008-02-21 | |||
| JP2008028286A | 2008-02-07 | |||
| JP2007134584A | 2007-05-31 | |||
| JPH1166968A | 1999-03-09 |
Attorney, Agent or Firm:
Kiyoshi Hattori