Title:
WIRELESS COMMUNICATIONS DEVICE AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/141663
Kind Code:
A1
Abstract:
In order to increase connection reliability in coil antennas, this production method for wireless communications devices includes: a step in which a circuit board is prepared that comprises an RFIC element mounted to a first surface and an interlayer conductor connected to the RFIC element and extending from the first surface to a second surface facing the first surface; a step in which at least the first surface of the circuit board is covered by an element block; and a step in which a coil-shaped conductor encircling the circuit board and the element block and connected to an end section of the interlayer conductor is used and a coil antenna connected to the RFIC element via the interlayer conductor is formed.
Inventors:
KATO NOBORU (JP)
OZAWA MASAHIRO (JP)
OZAWA MASAHIRO (JP)
Application Number:
PCT/JP2017/002888
Publication Date:
August 24, 2017
Filing Date:
January 27, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01Q7/00; G06K19/02; G06K19/077; H01L21/56; H01L25/00; H01P11/00; H05K1/11; H05K3/00; H05K3/18
Domestic Patent References:
| WO2010119854A1 | 2010-10-21 |
Foreign References:
| JP2007280343A | 2007-10-25 | |||
| JP2011211748A | 2011-10-20 | |||
| JP2006333403A | 2006-12-07 | |||
| JP5477459B2 | 2014-04-23 |
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (JP)
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