Title:
BOX-TYPE ELECTRONIC UNIT AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2020/262218
Kind Code:
A1
Abstract:
Provided is a box-type electronic unit which can exert a desired electromagnetic wave shielding function even when the relative position of a resin case and an electromagnetic wave shield member shifts due to a difference in thermal expansion coefficient. A box-type electronic unit (1) comprises: an electronic circuit board (30); a case (10) for accommodating the electronic circuit board (30); electromagnetic wave shield members (50, 60) which are formed, separately from the case (10), from a material having a thermal expansion coefficient different from that of the case (10), and are attached to the case (10) such that at least a portion thereof is exposed; and a viscoelastic shield layer (90) which is formed from a viscoelastic polymer material having electromagnetic wave shielding properties and is disposed, in contact with the case (10) and the electromagnetic wave shield members (50, 60), across the case (10) and the electromagnetic wave shield members (50, 60).
Inventors:
ONISHI MASAHIRO (JP)
SHINOZAKI TAKAHIRO (JP)
MIWA YASUYUKI (JP)
FUNAHASHI MASAHIRO (JP)
SHINOZAKI TAKAHIRO (JP)
MIWA YASUYUKI (JP)
FUNAHASHI MASAHIRO (JP)
Application Number:
PCT/JP2020/024084
Publication Date:
December 30, 2020
Filing Date:
June 19, 2020
Export Citation:
Assignee:
SUMITOMO RIKO CO LTD (JP)
International Classes:
C09J183/04; B60R16/02; F16J15/10; H05K5/00; H05K5/06; H05K9/00
Foreign References:
| JP2014017479A | 2014-01-30 | |||
| JP2001111282A | 2001-04-20 | |||
| JP2014003206A | 2014-01-09 | |||
| JP2007195319A | 2007-08-02 | |||
| JPH06260785A | 1994-09-16 |
Attorney, Agent or Firm:
KYORITSU INTERNATIONAL (JP)
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