Development of Multilayer Flex Substrate with Liquid ...

Development OF Multilayer flex Substrate WITH Liquid CRYSTAL POLYMER film Hiroyuki Okabe, Nagayoshi Matsuo, and Kenji Saito Hitachi Cable, Ltd. Hitachi-shi, Ibaraki, Japan Kazunori Ueda Nippon Steel Chemical Co., Ltd. ABSTRACTIn accordance with prevalence of wireless Local Area Network (LAN) and electrical mobile devices such as cellular phones, Personal Digital Assistants (PDA) and notebook personal computers, massive and fast data transmission for handling sound and pictures is being required in small body size of a semiconductor package.

transparent. It is thought that the reflection rate of the UV light at the interface between solder mask and LCP base film is much higher than that of polyimide.

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  Development, Multilayer, Flex, Substrates, Film, Polyimide, Development of multilayer flex substrate

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