WIRING BOARD AND METHOD OF FORMING HOLE THEREOF
A wiring board includes a photosensitive insulating layer and a first wiring layer. The photosensitive insulating layer has a hole, a first surface and a second surface opposite to each other. The hole has a first end opening formed in the first surface, a second end opening formed in the second sur...
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Format: | Patent |
Sprache: | chi ; eng |
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