Light emission device and display device using same as light source

A display device comprising:

• a light emission device comprising:
• a first substrate and a second substrate arranged opposite each other with a vacuum region therebetween;
• an electron emission region located at a side of the first substrate facing the second substrate;
• a driving electrode located on the first substrate and for controlling an emitting current of the electron emission region;
• an anode located at a side of the second substrate facing the first substrate;
• a phosphor layer on one surface of the anode and corresponding to pixel areas;
• and
• a spray coated Ag reflective layer covering the phosphor layer and having reflectivity between about 90% and about 99.9%;
• and
• a display panel located in front of the light emission device.