"unleaded gasoline"
本发明涉及一种稀土改性全无铅x射线屏蔽塑料。
High density packaging can he achieved by using leadless ceramic chip carriers (LCCCs).使用无引线陶瓷芯片载体(LCCC)可以达到高密度封装。
The leadless packaging structure reduces the packaging size of the semiconductor device and reduces the product cost.本发明缩小了半导体器件的封装尺寸,降低了产品成本。