Provided is an image display device including: a first case that is formed to support a display unit; a second case that is formed to cover a rear surface of a middle case; and a coupling module that couples the first case and the second case to each other, in which the coupling module includes a first member that is formed on the rear surface and has a predetermined length, a second member that is formed on one surface of the second case that faces the rear surface and is formed in parallel with the first member, and a slide member that is formed in such a manner that the slide member is inserted and is able to be moved in a sliding way.