This study proposes a method to improve the manufacturing process of a surface anchor structure for the injection molding along with bonding properties of the plating layer for antennas, which can be applied to the Laser Direct Plating (LDP) process for the production of a three-dimensional antenna integrated with a mobile device case. By adjusting parameters such as the output of the laser processing, scanning speed, and pulse recurrence frequency, a micro anchor structure was developed on the surface of the injection mold. The measurement of the surface roughness using a 3D surface profiler showed that the roughness improved by approximately 3.6 times, from 0.96 to 3.24 µm. In addition, the zigzag arrangement of the micro anchor structure was improved by 1.2 times compared to the even arrangement. Furthermore, if the micro anchor structure contained a wall after laser processing, the bonding strength of the plating solution was 69%; with no wall, it was 94% or higher. Thus, the existence of walls resulted in a difference of 1.4 times in the bonding strength. The laser processing improved the bonding strength of the plating solution on the micro anchor structure by approximately 19 times.

这项研究提出了一种方法，以改善用于注模的表面锚固结构的制造工艺以及天线镀层的粘结性能，该方法可以应用于激光直接镀（LDP）工艺来生产三层结构。尺寸天线与移动设备外壳集成在一起。通过调整诸如激光加工的输出，扫描速度和脉冲重复频率之类的参数，在注射模具的表面上形成了微锚结构。使用3D表面轮廓仪进行的表面粗糙度测量表明，粗糙度从0.96到3.24 µm改善了约3.6倍。另外，与均匀布置相比，微锚结构的之字形布置改善了1.2倍。此外，如果微锚结构在激光处理后包含壁，则镀液的结合强度为69％；没有墙，则为94％或更高。因此，壁的存在导致粘结强度相差1.4倍。激光处理将电镀液在微锚结构上的结合强度提高了约19倍。