Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1996-09-19
1998-11-17
Reinhart, Mark J.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
B41J 247
Patent
active
058383611
ABSTRACT:
A laser marking apparatus and method for marking the surface of a semiconductor chip are described herein. A laser beam is directed to a location on the surface of the chip where a laser reactive material, such as a pigment containing epoxy is present. The heat associated with the laser beam causes the laser reactive material to fuse to the surface of the chip creating a visibly distinct mark in contrast to the rest of the surface of the chip. Only reactive material contacted by the laser fuses to the chip surface, and the remaining residue on the non-irradiated portion can be readily removed.
REFERENCES:
patent: 3751587 (1973-08-01), Insler et al.
patent: 4148057 (1979-04-01), Jesse
patent: 4375025 (1983-02-01), Carlson
patent: 4585931 (1986-04-01), Duncan et al.
patent: 4638144 (1987-01-01), Latta, Jr.
patent: 4707722 (1987-11-01), Folk et al.
patent: 4719502 (1988-01-01), Ikeya et al.
patent: 4753863 (1988-06-01), Spanjer
patent: 4861620 (1989-08-01), Azuma et al.
patent: 4945204 (1990-07-01), Nakamura et al.
patent: 5030551 (1991-07-01), Herren et al.
patent: 5157412 (1992-10-01), Kleinschmidt et al.
patent: 5206280 (1993-04-01), Williams
patent: 5262470 (1993-11-01), Shimotsuma et al.
patent: 5329090 (1994-07-01), Woelki et al.
patent: 5346802 (1994-09-01), Ohbachi et al.
patent: 5357077 (1994-10-01), Tsuruta
patent: 5373039 (1994-12-01), Sakai et al.
patent: 5413629 (1995-05-01), Yasui et al.
patent: 5445923 (1995-08-01), Takahashi et al.
Micro)n Technology, Inc.
Reinhart Mark J.
LandOfFree
Laser marking techniques does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser marking techniques, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser marking techniques will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-889299