Method of manufacturing printed circuit board
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United States of America Patent
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May 14, 2013
Grant Date -
Nov 17, 2011
app pub date -
Apr 8, 2011
filing date -
May 17, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A resist film is formed on a conductor layer of a two-layered base material composed of a carrier layer and the conductor layer. Next, the resist film is exposed and developed, so that an etching resist pattern is formed. A region of the conductor layer that is exposed while not covered with the etching resist pattern is removed by etching. A conductor pattern is formed by removing the etching resist pattern. Then, an adhesive layer precursor is applied on an entire surface including an upper surface of the conductor pattern. The adhesive layer precursor is exposed and developed, so that an adhesive pattern is formed on the conductor pattern. After that, a base insulating layer is joined onto the conductor pattern with the adhesive pattern sandwiched therebetween. Finally, a carrier layer is separated from the conductor pattern, so that the FPC board is manufactured.
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