Key sheet and production method thereof
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United States of America Patent
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Aug 24, 2010
Grant Date -
Sep 24, 2009
app pub date -
Oct 24, 2006
filing date -
Oct 24, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Portable phones are getting a trend that s design and thinner configuration becomes more important. Therefore, in order to meet this demand, the entire key top is made of a thin metal, and a thin resin layer is provided on the back surface of the key top and further letter holes are filled with a resin. According to those, the adhesiveness of the key top is improved as well as improvement of hand feeling. In addition, a printed layer for coloring the letters can be provided on the back surface of the key top.
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