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Disclosed is a method that uses a leader tape setup to perform process setup and in-process sampling without affecting the product tape. Benefits include an improvement in the process yield.
English (United States)
This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately
99% of the total text.
Reel Design for Flex Tape Setup and in
Disclosed is a method that uses a leader tape setup to perform process setup and
in-process sampling without affecting the product tape. Benefits include an
improvement in the process yield.
Currently, samples are removed from the section of tape that is used
for production units (see Figure 1). The tape is spliced at the location that
the sample was removed from. This in-line product monitoring leads to yield
losses. Yield is also lost due to foreign materials introduced from handling,
and chemical contamination from splicing adhesives.
The disclosed method incorporates a new leader tape layout
to include additional tape in the middle of the leader for in-line product
sampling and process setup.� Figure 2
shows the new leader layout with the setup section included. The sections that
are clear leader tape (flanking the sampling section) are a minimum length that
will span the longest process module, without engaging any process tape (either
sampling tape, or product tape) in the process area of the module.� Attached to the end of the tape is a second
in-line product sampling section that is isolated from the product tape by a
section of leader tape.
The disclosed method
shows immediate improvement in the process yield. The improvement in handling
procedures also results in a yield increase, due to a reduction in risk
associated with acquiring samples in-process.