Over erosion
Author:Liu Yuye Time:2021-06-09 15:43 Browse(427)
There are so many reasons for over etching- a) u2 u$ I. A。

Over erosion

The coating quality is not good enough 0 g $V2 \% {9 m # '& D1 KPhotoresist film adhesion is not good enough(H6 B9 m't; M. W; G4 C) process problems (insufficient baking, excessive pressure, too long time). , m3 S. w9 Q + '* E1 I $U9 T, thank you for sharing. thank you!! Praise the landlord!!..
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