| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile phone set in which a light switch is not provided on an outer face of a set case but a user can check information even in a dark place with an operation as simple as pressing the light switch. SOLUTION: The foldable mobile phone set 10 is provided with a back face liquid crystal display 15 placed on the outer face in a folded state, a display light 34 used as backlight for the back face liquid crystal display 15. The display light 34 is configured to be turned on if the mobile phone set 10 in the folded state is opened and closed in a predetermined period. COPYRIGHT: (C)2004,JPO
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