发明授权
US06168972A Flip chip pre-assembly underfill process 失效
倒装芯片预组装底部填充工艺

Flip chip pre-assembly underfill process
摘要:
An encapsulation process for flip-chip bonding chips to a substrate encapsulates solder balls on the chip in a separate encapsulation process in which the chip is coated with encapsulation layer and then a portion of the encapsulation layer is removed to expose a portion of the solder balls.
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