发明申请
US20070130761A1 Method of manufacturing printed circuit board having landless via hole 失效
具有无通孔的印刷电路板的制造方法

Method of manufacturing printed circuit board having landless via hole
摘要:
Disclosed is a method of manufacturing a printed circuit board having a landless via hole. Specifically, this invention provides a method of manufacturing a printed circuit board having a landless via hole without the upper land of a via hole using a photoresist (P-LPR) which is loaded in the via hole. Therefore, in this invention, since a circuit pattern is formed using only copper of a copper clad laminate, the width thereof is minimized, thus easily realizing a fine circuit pattern. Further, the landless via hole structure is applied, resulting in a highly dense circuit pattern.
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