Fukui Precision Component (shenzhen) Co., Ltd.

Hongqisheng Precision Electronics (qinhuangdao) Co., Ltd.

Zhen Ding Technology Co., Ltd.

Garuda Technology Co., Ltd.

Wen-Hsin Yu

Ming-Jaan Ho

Xian-Qin Hu

Yan-Lu Li

Rui-Wu Liu

Yu-Hsien Lee

A flexible circuit board includes an insulating layer, a linear signal line, a plurality of grounding lines, a metal coating layer, a circuit layer and an electromagnetic shielding layer. The insulating layer includes a first face and a second face. The metal coating layer covers the linear signal line on the first face. The metal coating layer has a thickness less than that of the linear signal line, and an electrical conductivity larger than that of the linear signal line. The grounding lines are at two opposite sides of the linear signal line on the first face. The circuit layer is on the second face. The electromagnetic shielding layer covers the linear signal line and the grounding lines. The linear signal line and the grounding lines are between the electromagnetic shielding layer and the circuit layer. A method for manufacturing the flexible circuit board is also provided.

Flexible circuit board and method for manufacturing same

A method for manufacturing a PCB includes certain steps. A printed circuit board sheet is provided. The printed circuit board includes an unwanted portion and a printed circuit board unit which includes a plurality of contact pads. An imaginary boundary line is defined between the printed circuit board unit and the unwanted portion. Each of the contact pads defines an outline. A nearest distance between the outline and the imaginary boundary line is less than 4 millimeters. The printed circuit board sheet is punched along the imaginary boundary line, forming one hollow portion or a plurality of through slots. A plurality of burrs is generated on an inner surface of the hollow portion or the through slots. The burrs are removed using a low-energy laser cutting process, thereby obtaining a printed circuit board. A laser power used in the low-energy laser cutting process is 5-8 watts.

Method for manufacturing printed circuit board

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Taipei, Taiwan

Wen-Hsin Yu