| 摘要 |
PROBLEM TO BE SOLVED: To control a refresh operation for a display means performing a display operation by using a charged object moved according to an applied voltage, according to the present use situation. SOLUTION: In a mobile phone provided with a sub-screen SD performing the display operation by using the charged object moved according to the applied voltage, a central control section 11 controls whether or not the refresh operation of the sub-screen SD is performed according to the present use situation of the mobile phone. The refresh operation of the sub-screen SD is performed in such a style that the sub-screen SD hides, when the possibility not to use the sub-screen SD is high, and when the possibility for user not to see the sub-screen SD is high, that is, during the change of the style, in a specific style, during charging, during installation on an installation base, during the operation of a specific function, etc. COPYRIGHT: (C)2009,JPO&INPIT
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