| 摘要 |
PURPOSE: A device for displaying luminance of a button is provided to made a keypad with an opaque material, and to locally display a display symbol only of a functional button for light of a display lamp, thereby improving display quality by preventing interference between neighboring functional buttons. CONSTITUTION: A functional button(310) is made of an opaque material, and is pressed by an exposed part through an insertion hole(301) of a front case(300). A keypad(320) has a rising part(321) risen when the functional button(310) is pressed. A conductive contact is formed on a lower side of the rising part(321). Pierced holes(327) are formed in display symbol type so as to display functions of the functional button(310). A PCB(330) has a switch pattern in a position opposite to the conductive contact, and has a display lamp(333) for displaying a display symbol of the functional button(300).
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