| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that power consumption is increased since electric power for use is increased in proportion to the number of screens when a plurality of screens are arranged.SOLUTION: This portable terminal device is comprised of a first case which has a first display part and a second case that has a second display part. When a detected remaining value of a battery is lower than a first value, the brightness of the first display part and that of the second display part are set according to a position of the second case relative to the first case. |
