DISPLAY APPARATUS

A display apparatus includes a circuit board having a driving circuit, and a pixel array on the circuit board, and including pixel units including a plurality of sub-pixels. The pixel array further includes a semiconductor stack including a first semiconductor region on the circuit board and divided into a plurality of LED cells, and a second semiconductor region on the first semiconductor region and having a partition structure defining a plurality of sub-pixel spaces, a plurality of wavelength converters respectively disposed in the plurality of sub-pixel spaces, a partition reflective layer having a first portion on an upper surface of the partition structure, and a second portion on sidewalls of the partition structure, the first portion having a thickness greater than a thickness of the second portion, and a first electrode and a second electrode electrically connecting each of the plurality of LED cells to the driving circuit.