SURFACE WETTABILITY CONTROL MEDIUM, SURFACE WETTABILITY CONTROL METHOD, PRINTED WIRING BOARD, AND ELECTRONIC APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a method for forming, easily and with high dimensional accuracy, a via post that penetrates an insulation film for electrically connecting conductors of wiring patterns or the like via the insulation film with each other.;SOLUTION: A surface wettability control medium for controlling a water contact angle of a contacted part of a contacted body 22 in surface-contact with a smooth or patterned resin surface 10 within a range from 40° to 90° is brought into contact with the resin surface 10.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT