A display apparatus of a plurality of display apparatues constituting a wall display includes a first board, a second board, and a plurality of display modules. The first board includes a first communication interface including a circuitry for wireless transmission, and a timing controller configured to, in response to information on an image being received, generate a plurality of driving signals for driving the plurality of display modules based on the received information and transmit the plurality of driving signals to the second board through the first communication interface. The second board includes a second communication interface including circuitry for wireless reception, a plurality of interfaces electrically connected to the plurality of display modules, and an IC chip configured to, based on the plurality of driving signals being received through the second interface, provide each of the received driving signals to each of the display modules.