Title:
PITCH CONVERSION UNIT AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/080206
Kind Code:
A1
Abstract:
Provided is a pitch conversion unit for converting the pitch of a plurality of contact-terminal-side electrodes to the pitch of a plurality of device-side electrodes, the pitch conversion unit being configured such that the joining strength between an electroconductive layer and an electroconductive via penetrating through an insulation layer in a thickness direction can be improved. This pitch conversion unit 1 has: a plurality of resin layers 12 laminated in a thickness direction; a plurality of penetrating electroconductive bodies 33 that penetrate through the resin layers 12 in the thickness direction; a pair of electroconductive layers 36 positioned on facing sides of two resin layers 12 that are adjacent in the thickness direction, the electroconductive layers 36 being electrically connected to the penetrating electroconductive bodies 33 that penetrate through each of the two adjacent resin layers in the thickness direction, among the plurality of penetrating electroconductive bodies 33; an insulation layer 13 positioned between the pair of electroconductive layers 36; and an electroconductive via 34 penetrating through the insulation layer 13 in the thickness direction, end sections of the electroconductive via 34 being joined to the pair of electroconductive layers 36. One of the pair of electroconductive layers 36 has, in at least one section of the portion joined to the electroconductive via 34, a recess 40 that is sunken in the thickness direction.
Inventors:
SAKAI SHIGEKI (JP)
KIMURA KAZUO (JP)
YAGI MASANOBU (JP)
KIMURA KAZUO (JP)
YAGI MASANOBU (JP)
Application Number:
PCT/JP2022/041213
Publication Date:
May 11, 2023
Filing Date:
November 04, 2022
Export Citation:
Assignee:
NIDEC ADVANCE TECH CORPORATION (JP)
International Classes:
G01R1/073; G01R31/26
Domestic Patent References:
| WO2013031822A1 | 2013-03-07 |
Foreign References:
| JP2007115952A | 2007-05-10 | |||
| JP2009236721A | 2009-10-15 | |||
| JP2011023694A | 2011-02-03 | |||
| JP2009236639A | 2009-10-15 |
Attorney, Agent or Firm:
KAJIHARA Kei (JP)
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