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PURPOSE : A portable terminal is provided to independently operate two or more functions of a key button by including an independent key button structure.CONSTITUTION : One or more parts of a display unit are covered by a case. A key button(200) is installed on one or more areas of the case. The key button is divided from a predetermined space. The key button includes a base plate(210) and a protrusion unit(211). Two or more input units are installed on a front base plate. The protrusion unit is extended from the rare surface of the base plate to the case. The protrusion unit is fixed to the case.COPYRIGHT KIPO 2013