The problem of oil leakage from back drilling solder mask plug hole with high aspect ratio has always been a difficult problem in solder mask manufacturing.There are many factors that affect back drilling oil leakage,and the actual back drilling oil leakage will be affected by ink characteristics,product design and process control.In this paper,materials selection,data optimization and other directions are explored,and high solid content plug hole ink and data optimization are introduced to prevent and reduce the back drilling oil leakage and improve the ink holes and cracks in the hole.This study provides certain reference for the production of high aspect ratio back drilling solder mask plug holes,and achieves the dual effects of improving quality and efficiency.
high aspect ratioback drillingsolder mask plug holeoil leakage
NETL
NSTL
万方数据
