Patent ID: 8164246

Claim:
A light emission device comprising: a vacuum panel having a first substrate and a second substrate facing each other, and having a sealing member between a planar surface of the first substrate and the second substrate, the first substrate having recesses into the planar surface of the first substrate facing the second substrate; cathode electrodes located below the planar surface in corresponding ones of the recesses, each of the recesses having a planar bottom surface that is parallel to the planar surface; electron emission regions on corresponding ones of the cathode electrodes; a gate electrode fixed at one side of the first substrate and spaced apart from the electron emission regions, the gate electrode including a mesh unit having openings through which an electron beam passes and a supporting member surrounding the mesh unit; and a light emission unit at a side of the second substrate facing the first substrate, wherein the thickness of the first substrate at the planar bottom surface of each of the recesses is substantially constant and is less than the thickness of the first substrate at portions other than the recesses.