An IP mobility solution for mobile network that combines features of IP multicast and mobile IPv6. At least some of the sub-pixels are grouped into a sub-pixel group including an \u201ca\u201d\xd7\u201cb\u201d matrix arrangement, the sub-pixel group being connected to an amount \u201ca\u201d of the gate lines and an amount \u201cb\u201d of the data lines, and \u201ca\u201d and \u201cb\u201d are positive integers greater than zero and \u201cb\u201d is greater than \u201ca. The first sensing means is in a first chamber of the enclosure and the second sensing means is in a second chamber. The detector results in voltage differences between the first and second input ends thereof when receiving the alternating current signal output from the sensor, and thus output a signal.