A dialog server which provides dialogs made by at least one user through their respective avatars in a virtual space. The first sharing device is adapted to selectively share the signal with at least a second microelectronic die on one side of the first microelectronic die in response to a first share control signal. An organic light emitting device including the compound represented by Formula 1 can thus have long lifetime. For those sub-carriers in the second subset, perform ISI cancellation then ICI cancellation along with equalization. Therefore, luminous intensity distribution patterns diffused downward can be obtained.