Metallization removal under the laser mark area for substrates

摘要

A printed circuit board which has an ink block and a first conductive layer that are attached to a solder mask. A first dielectric layer is attached to the first conductive layer. Indicia is formed in the ink block by a laser ablation process. The first conductive layer has a first non-metallized area located beneath the ink block. Eliminating metal beneath the ink block would reduce the amount of energy that is absorbed by the circuit board during the laser ablation process. The printed circuit board has multiple layers of conductive and dielectric material. Some or all of the conductive layers may have non-metallized areas located beneath the ink block.