发明公开
EP1074524A1 Glass-ceramic composition, circuit substrate using the same and manufacture method thereof 有权
Glaskeramische Zusammensetzung,aus diesem材料entstandenes Schaltkreissubstrat sowie dessen Herstellung

Glass-ceramic composition, circuit substrate using the same and manufacture method thereof
摘要:
In the glass-ceramic composition, a weight ratio of a glass and a ceramic is 40 to 60:60 to 40. The glass is composed of 40 to 60 wt% of SiO 2 , 5 to 9 wt% of Al 2 O 3 , 1 to 10 wt% of B 2 O 3 , 3 to 5 wt% of Na 2 O+K 2 O, 3 to 15 wt% of CaO+MgO+ZnO, and 15 to 40 wt% of PbO, and does not contain Li 2 O. A softening point of the glass is 650 to 780°C. The circuit substrate includes a laminate substrate formed by laminating insulating substrates, and a conductor circuit formed on a surface of each insulating substrate. The insulating substrate is formed of the glass-ceramic composition. A wiring layer and a via hole conductor are provided inside the laminate substrate.
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