FLEXIBLE PRINTED CIRCUIT BOARD AND SLIDE TYPE MOBILE PHONE TERMINAL USING THE SAME

摘要

A flexible printed circuit board and a slide type mobile phone terminal using the same are provided to prevent a short-circuit of the flexible printed circuit board even when a sliding unit is slid hundreds of thousands of times. A flexible printed circuit board(100) includes a substrate(101) and a coverlay(102). The substrate is composed of an electrical insulating layer(11) and a conductive layer(12). The coverlay is composed of an adhesive layer(13) and an electrical insulating layer(14) and formed on the conductive layer of the substrate through the adhesive layer. The adhesive layer has a storage modulus of 1 to 4GPa and a loss modulus of 0.03 to 0.1GPa. The adhesive layer is made of resin having a recovery rate of more than 90% after elongation. The electrical insulating layer of the substrate has a thickness of 7.5 to 20mum. The electrical insulating layer of the coverlay has a thickness of 7.5 to 40mum.