Invention Grant
- Patent Title: Manufacturing method of multilayer printed wiring board
- Patent Title (中): 多层印刷线路板的制造方法
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Application No.: US14008034Application Date: 2012-03-29
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Publication No.: US09585261B2Publication Date: 2017-02-28
- Inventor: Ayumu Tateoka , Shinichi Obata , Toshiyuki Shimizu
- Applicant: Ayumu Tateoka , Shinichi Obata , Toshiyuki Shimizu
- Applicant Address: JP Tokyo
- Assignee: MITSUI MINING & SMELTING CO., LTD.
- Current Assignee: MITSUI MINING & SMELTING CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Greenblum Bernstein, P.L.C.
- Priority: JP2011-075419 20110330
- International Application: PCT/JP2012/058338 WO 20120329
- International Announcement: WO2012/133637 WO 20121004
- Main IPC: H05K3/30
- IPC: H05K3/30 ; H05K3/46 ; H05K3/02

Abstract:
A manufacturing method of a multilayer printed wiring board in which a copper foil with carrier foil consists of at least four layers, a carrier foil/a release layer/a heat-resistant metal layer/a copper foil layer is used; a supporting substrate is manufactured by laminating an insulating layer constituting material on the surface of the copper foil layer constituting the copper foil with carrier foil; a supporting substrate with build-up wiring layer is manufactured by forming a build-up wiring layer on the surface of the carrier foil constituting the copper foil with carrier foil in the supporting substrate; the resulted supporting substrate with build-up wiring layer is separated at the release layer to manufacture a multilayered laminate; the resulted multilayered laminate is processed a necessary procedures to manufacture a multilayer printed wiring board.
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