Invention Grant
- Patent Title: Circuit board having an asymmetric layer structure
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Application No.: US15534897Application Date: 2015-12-10
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Publication No.: US09967972B2Publication Date: 2018-05-08
- Inventor: Andreas Zluc , Gerald Weidinger , Mario Schober , Hannes Stahr , Timo Schwarz , Benjamin Gruber
- Applicant: AT & S Austria Technologie & Systemtechnik Aktiengesellschaft
- Applicant Address: AT Leoben
- Assignee: AT & S Austria Technologie & Systemtechnik Aktiengesellschaft
- Current Assignee: AT & S Austria Technologie & Systemtechnik Aktiengesellschaft
- Current Assignee Address: AT Leoben
- Agency: Smith Tempel Blaha LLC
- Agent Robert A. Blaha
- Priority: DE102014118464 20141211
- International Application: PCT/EP2015/079200 WO 20151210
- International Announcement: WO2016/091992 WO 20160616
- Main IPC: H05K1/03
- IPC: H05K1/03 ; H05K1/00 ; B32B15/08 ; H05K1/02 ; H05K1/18 ; H01L23/538 ; H01L23/00 ; H05K3/46 ; H05K3/00 ; H01L21/48 ; H01L23/14 ; H05K1/11

Abstract:
A circuit board is described which includes a layer composite with at least one dielectric layer which includes a planar extension in parallel with respect to an xy-plane which is spanned by an x-axis and a y-axis perpendicular thereto, and which includes a layer thickness along a z-axis which is perpendicular with respect to the x-axis and to the y-axis; and at least one metallic layer which is attached to the dielectric layer in a planar manner. The layer composite along the z-axis is free from a symmetry plane which is oriented in parallel with respect to the xy-plane, and the dielectric layer includes a dielectric material which has an elastic modulus E in a range between 1 and 20 GPa and along the x-axis and along the y-axis a coefficient of thermal expansion in a range between 0 and 17 ppm/K. A method of manufacturing such a circuit board is also described. Further, a method of manufacturing a circuit board structure comprising two asymmetric circuit boards and a method of manufacturing two processed asymmetric circuit boards from a larger circuit board structure is described.
Public/Granted literature
- US20170339784A1 Circuit Board Having an Asymmetric Layer Structure Public/Granted day:2017-11-23
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