ELIC Rigid-Flex PCB is the interconnection hole technology in any layer. This technology is the patent process of Matsushita Electric Component in Japan. It is made of short fiber paper of DuPont's "poly aramid" product thermount, which is impregnated with high-function epoxy resin and film. Then it is made of laser hole forming and copper paste, and copper sheet and wire are pressed on both sides to form a conductive and interconnected double-sided plate. Because there is no electroplated copper layer in this technology, the conductor is only made of copper foil, and the thickness of the conductor is the same, which is conducive to the formation of finer wires.

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