Invention Grant
- Patent Title: Radio frequency circuit, wireless communication device, and method of manufacturing radio frequency circuit
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Application No.: US15945778Application Date: 2018-04-05
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Publication No.: US10403587B2Publication Date: 2019-09-03
- Inventor: Masaru Sato , Yukiyasu Furukawa
- Applicant: FUJITSU LIMITED
- Applicant Address: JP Kawasaki
- Assignee: FUJITSU LIMITED
- Current Assignee: FUJITSU LIMITED
- Current Assignee Address: JP Kawasaki
- Agency: Fujitsu Patent Center
- Priority: JP2017-087500 20170426
- Main IPC: H01L23/66
- IPC: H01L23/66 ; H01L23/492 ; H01L23/498 ; H01L21/48 ; H01L25/065 ; H01L25/00 ; H01Q1/22 ; H01Q1/48 ; H01L23/049

Abstract:
A radio frequency circuit includes, a multilayer substrate having a grounded base metal and a plurality of insulating layers and wiring layers formed over the grounded base metal and having a recess surrounded by the plurality of insulating layers and wiring layers over the grounded base metal, an upper substrate having a through-hole penetrating the upper substrate, a first semiconductor chip mounted on the upper surface of the upper substrate and electrically coupled to a metal film formed on the lower surface of the upper substrate, a metal pillar formed on the upper surface of the grounded base metal in the recess, and a solder buried in the through-hole and bonded to the metal film and the upper surface of the metal pillar. The metal film is bonded to a ground wiring layer electrically coupled to the grounded base metal among the plurality of wiring layers.
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Information query
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