Display apparatus

A method of receiving an optical wireless communication data signal comprising:

• receiving with a display apparatus, modulated light comprising an optical wireless communication data signal, wherein;
• the display apparatus comprises an optical wireless communication (OWC) apparatus and a display,
• the OWC apparatus is configured to decode the received modulated light to obtain the data signal;
• the display comprises an array of elements comprising a plurality of display elements configured to display an image to a user and a plurality of light-receiving elements configured to receive the modulated light;
• and
• the light-receiving elements are distributed in the display in groups of one or more light-receiving elements, wherein at least some of said groups are at least partially surrounded by display elements, such that the array of elements comprises a repeating arrangement of unit cells, each unit cell comprising at least one light-receiving element, at least one red element, at least one green element and at least one blue element;
• and
• decoding the received modulated light to obtain the optical wireless communication data signal encoded in the received modulated light.