| 摘要 |
PROBLEM TO BE SOLVED: To provide a forming method for a fine hole in a printed board which can form even the fine hole of any diameter, make its production speed fast, and achieve effects such as low cost, low contamination, etc. SOLUTION: By this forming method, the fine hole can be formed in the printed board speedily at a low cost by etching other materials (e.g. glass fibers) of the printed board 10 which can not be removed with plasma by using a chemical solution after etching for the fine hole is carried out by mainly using plasma technology and plasma etching is performed.
|
