| 摘要 |
PURPOSE: An integrated structure of a printed circuit board is provided to utilize a narrow space of the printed circuit board by installing a via hole for connecting a circuit line of each layer on the printed circuit board where a switching terminal is installed. CONSTITUTION: A switching terminal(20) has a copper foil(22) formed to expose an upper part of a film(21) to the exterior and a lead provided on both ends of the copper foil and coupled to a predetermined circuit(13) on the printed circuit board(10). A key pad(30) installed spaced apart from the switching terminal has a carbon layer(32) formed on an opposed plane to the switching terminal, and is closely connected to the switching terminal according to a push by a user so as to flow a predetermined electric signal. At least one via hole(15) electrically connects a circuit line of a layer to the printed circuit board where the switching terminal is installed.
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