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Forum FPC成为环氧覆铜板重要品种及特点
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FPC成为环氧覆铜板重要品种及特点

YYD
YYD over 14 years ago

具有柔性功能、以环氧树脂为基材的挠性覆铜板(FPC),由于拥有特殊的功能而使用越来越广泛,正在成为环氧树脂基覆铜板的一个重要品种。但我国起步较晚有待迎头赶上。

  环氧挠性印制线路板自实现工业生产以来,至今已经历了30多年的发展历程。从20世纪70年代开始迈入了真正工业化的大生产,直至80年代后期,由于一类新的聚酰亚胺薄膜材料的问世及应用,挠性印制电路板使FPC出现了无粘接剂型的FPC(一般将其称为“二层型FPC”)。进入90年代世界上开发出与高密度电路相对应的感光性覆盖膜,使得FPC在设计方面有了较大的转变。由于新应用领域的开辟,它的产品形态的概念又发生了不小的变化,其中把它扩展到包括TAB、COB用基板的更大范围。在90年代的后半期所兴起的高密度FPC开始进入规模化的工业生产。它的电路图形急剧向更加微细程度发展,高密度FPC的市场需求量也在迅速增长。

特点

优缺点:

  1.可自由弯曲、折叠、卷绕,可在三维空间随意移动及伸缩。

  2.散热性能好,可利用F-PC缩小体积。

  3.实现轻量化、小型化、薄型化,从而达到元件装置和导线连接一体化。

  4.工艺设计比较复杂、困难,客户产品结构变化多样,要求各不相同,不能达成稳定的工艺

  5.返工的可能性低,特别在压制、蚀刻、电镀等

  6.检查困难,线细、孔铜等给检测带来不便。

  7.不能单一承载较重的物品

  8.软板较薄,容易产生折皱、卷曲、压伤等

  9.产品的成本较高,原材料的PI主要还是靠进口日本、美国、台湾等地的FPC应用领域、MP3、MP4播放器、便携式CD播放机、家用VCD、DVD 、数码照相机、手机及手机电池、医疗、汽车,航天及军事领域

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