Light emission device and display device using the light emission device as a light source

A display device comprising:

• a display panel configured for displaying an image;
• and
• a light emission device configured for providing light to the display panel,
• wherein the light emission device comprises:
• a front substrate and a rear substrate facing each other;
• an electron emission unit disposed on a surface of the front substrate facing the rear substrate, the electron emission unit comprising a plurality of electron emission elements;
• and
• a light emission unit comprising a metal reflective layer disposed on the rear substrate and a phosphor layer disposed on a surface of the metal reflective layer facing the front substrate,
• wherein each electron emission element comprises:
• a first electrode, wherein the first electrodes of the plurality of electron emission elements of the electron emission unit are disposed with a predetermined spacing therebetween along a first direction of the front substrate,
• a second electrode, wherein the second electrodes of the plurality of electron emission elements are disposed between the first electrodes along the first direction, and
• first electron emission regions electrically coupled to the first electrode, wherein the first electron emission regions are thinner than the first electrode.