| 摘要 |
An object of the present invention is to achieve additional control of power consumption in a display device by performing fine-point switch off control corresponding to a method of a user's touch operation. The display device includes a touch panel and a display unit with a backlight, an area detecting section for detecting a touch area when a touch operation is performed on the touch panel, and a control section for controlling a lighting time interval of the backlight according to the touch area. The method of the touch operation by the user is detected as a difference in touch area and, according to the touch area the lighting time interval of the backlight can be controlled. For example, the lighting time interval can be set short in the case of a light touch, and the lighting time interval can be set long in the case of a firm touch. |
| 主权项 |
1. A display device, comprising:
a touch panel; a display unit with a backlight; a data storage device configured to store, as predetermined system values, a first area value, a second area value larger than the first area value, a first time, a second time longer than the first time, and a third time longer than the second time; an area calculating section that, when a touch operation is performed at an arbitrary position on the touch panel, calculates a size of a touch area corresponding to an area at the arbitrary position that is in contact with a grounding body of a user for performing the touch operation; a control section that controls a lighting time interval of the backlight according to the calculated size of the touch area, a first criteria stored in the storage device, a second criteria stored in the storage device, and a third criteria stored in the data storage device; and a time measuring section that measures a touch time corresponding to a duration throughout which the touch operation is continually performed at the arbitrary position of the touch panel, wherein in accordance with the first criteria, under a condition where a size of the touch area on the touch panel is smaller than the first area value, the lighting time interval of the backlight is set as the first time, wherein, in accordance with the second criteria, under a condition where i) a size of the touch area on the touch panel is equal to or larger than the first area value and is smaller than the second area value, and ii) the touch time measured by the time measuring section is shorter than a predetermined time value, the lighting time interval of the backlight is set as the second time, and wherein, in accordance with the third criteria in place of the second criteria, under a condition where i) a size of the touch area on the touch panel is equal to or larger than the first area value and is smaller than the second area value, and ii) the touch time measured by the time measuring section is longer than the predetermined time value, the lighting time interval of the backlight is set as the third time. |
