PURPOSE: A three dimensional display apparatus is provided to use 3D glasses for a general purpose by using emitter signals of different pattern according to the 3D glasses applied. CONSTITUTION: A 3D display device includes a plurality of 3D glasses. A first 3D glasses(300A) from the plurality of 3D glasses is used in a first duration and a second 3D glasses(300B) is used in a second duration. An emitter(410) transmits first emitter signals from the first 3D glasses in the first duration and transmits second emitter signals from the second 3D glasses in the second duration.
