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US6136419A Ceramic substrate having a sealed layer 失效
具有密封层的陶瓷基板

Ceramic substrate having a sealed layer
摘要:
Disclosed is a multilayer ceramic substrate, and a method for forming same, which has an outer unsealed layer having a metallic via, an inner sealed layer having a composite via of metallic and ceramic materials and a further unsealed layer having a metallic via.
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