A power management method a display device utilizes the same are disclosed. The first signal generator generates a first signal capable of notifying an electronic device capable of accepting an operation executed by the active stylus pen that the pen tip is in contact with the electronic device when an operation of bringing the pen tip into contact with the electronic device is executed. Further, conditions allowing third-party recipients to change service parameters include delivery time and place, exchange of purchased service for another service, return of the purchased service, etc. In one embodiment the decorative panel is made from the same mat board used in the inside mat of a double mat, that matches the color of the focal point of a picture, creating a visual progression from frame panel color to inside mat color to the picture focal point color.