A display apparatus comprising: a first display assembly and a second display assembly adjacent to the first display assembly, each of the first display assembly and the second display assembly including: a display module having a screen; a display module support configured to support the display module, the display module support including: a front frame facing the display module; a rear frame facing the front frame; a side frame connecting the front frame to the rear frame; a coupling unit mounted on the rear frame to couple the first display assembly and the second display assembly to each other and provided with a fastener (35, 36) having a second power terminal; and a slit formed on the side frame to correspond to the coupling unit of the display module support, an operation unit coupled to the coupling unit and configured to operate the coupling unit; and a first power terminal mounted on an inner wall of the side frame to contact the second power terminal of the other of the first display assembly and the second assembly so that power is transmitted between the first display assembly and the second display assembly, wherein the first display assembly and the second display assembly are configured to be coupled to each other and to be electrically connected to each other when the fastener (35, 36) of the coupling unit of one of the first display assembly and the second display assembly, which rotates to protrude to the outside of the slit, is coupled to the slit of the other of the first display assembly and the second display assembly so that the second power terminal is contacted to the first power terminal, and similarly for the coupling of the fastener (35,36) of the coupling unit of the other of the first display assembly (la) and the second assembly. a display module having a screen; a display module support configured to support the display module, the display module support including: a front frame facing the display module; a rear frame facing the front frame; a side frame connecting the front frame to the rear frame; a coupling unit mounted on the rear frame to couple the first display assembly and the second display assembly to each other and provided with a fastener (35, 36) having a second power terminal; and a slit formed on the side frame to correspond to the coupling unit of the display module support, an operation unit coupled to the coupling unit and configured to operate the coupling unit; and a first power terminal mounted on an inner wall of the side frame to contact the second power terminal of the other of the first display assembly and the second assembly so that power is transmitted between the first display assembly and the second display assembly, wherein the first display assembly and the second display assembly are configured to be coupled to each other and to be electrically connected to each other when the fastener (35, 36) of the coupling unit of one of the first display assembly and the second display assembly, which rotates to protrude to the outside of the slit, is coupled to the slit of the other of the first display assembly and the second display assembly so that the second power terminal is contacted to the first power terminal, and similarly for the coupling of the fastener (35,36) of the coupling unit of the other of the first display assembly (la) and the second assembly. a front frame facing the display module; a rear frame facing the front frame; a side frame connecting the front frame to the rear frame; a coupling unit mounted on the rear frame to couple the first display assembly and the second display assembly to each other and provided with a fastener (35, 36) having a second power terminal; and a slit formed on the side frame to correspond to the coupling unit of the display module support, an operation unit coupled to the coupling unit and configured to operate the coupling unit; and a first power terminal mounted on an inner wall of the side frame to contact the second power terminal of the other of the first display assembly and the second assembly so that power is transmitted between the first display assembly and the second display assembly, wherein the first display assembly and the second display assembly are configured to be coupled to each other and to be electrically connected to each other when the fastener (35, 36) of the coupling unit of one of the first display assembly and the second display assembly, which rotates to protrude to the outside of the slit, is coupled to the slit of the other of the first display assembly and the second display assembly so that the second power terminal is contacted to the first power terminal, and similarly for the coupling of the fastener (35,36) of the coupling unit of the other of the first display assembly (la) and the second assembly.