DISPLAY APPARATUS

A display apparatus comprises an at least partially transparent display, the display configured to generate light to form an image for display to a user positioned in front of the display, and at least one of light-transmitting device or light-receiving device positioned behind the display, wherein the at least one of light-transmitting device or light-receiving device is configured to at least one of transmit or receive light through at least part of the display, wherein the at least one of light-transmitting device or light-receiving device comprises or forms part of an optical wireless communications (OWC) apparatus configured to at least one of transmit or receive the light through the at least part of the display.