An electron emission device, optimizes positional relation of the electron emission region to the beam passage hole of the grid electrode, thereby enhance the screen brightness and the color representation. It includes first and second substrates facing each other with a distance, and first and second electrodes formed on the first substrate. Electron emission regions contact the second electrodes, and are located corresponding to pixel regions established on the first substrate. A grid electrode is disposed between the first and the second substrates, and has electron beam passage holes corresponding to the respective electron emission regions. With the electron emission device, the positional relation of the electron emission region to the beam passage hole of the grid electrode is optimally made to thereby enhance the screen brightness and the color representation. |