A light emission device and a display device having the light emission device as a light source are provided. The light emission device includes first and second substrates facing each other, an electron emission unit that is located on an inner surface of the first substrate and includes a plurality of electron emission elements, a phosphor layer located on an inner surface of the second substrate, and an anode electrode located on the phosphor layer. Each of the electron emission elements includes a plurality of first electrodes arranged in parallel with each other, a plurality of second electrodes arranged in parallel with each other between the first electrodes, and a plurality of electron emission regions that are electrically connected to the first electrodes.