To provide an FPC connection method for a protection panel with a touch input function at a low cost and with a high degree of freedom in component packaging or material selection.
The present invention relates to a method for electrically connecting an FPC with a lower circuit and an upper circuit via a through-hole provided in a lower electrode panel for a protection panel with a touch input function. In the FPC, a circuit is provided on one side of a film substrate, and a charging hole passing through both the film substrate and the circuit is opened at a connecting-side terminal portion. In the connecting-side terminal portion of the FPC, an insulated adhesive layer is provided while leaving the surroundings of the charging hole, the FPC is adhered to a lower surface of the lower electrode panel by the insulated adhesive layer, the FPC is then electrically connected with the lower circuit and the upper circuit by charging the inside of a cavity facing the charging hole with a conductive adhesive, and after the conductive adhesive is cured while being exposed to the charging hole, the charging hole is finally sealed by a sealing material.
HASHIMOTO TAKAO
NISHIKAWA KAZUHIRO
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