Patent ID: 7830090

Claim:
A light emission device comprising: a vacuum vessel comprising: a first substrate, a second substrate facing the first substrate with a gap therebetween, the first and second substrates comprising an active area and a non-active area surrounding the active area, and a sealing member disposed between the first and second substrates and surrounding the non-active area; an electron emission unit on the first substrate at the active area; a light emission unit on the second substrate at the active area; a getter unit between the first and second substrates at the non-active area; and a barrier disposed between the getter unit and the active area, wherein the barrier comprises: a first barrier having a length and a height, the height being substantially identical with that of the gap between the first and second substrates; and a pair of second barriers extended from opposite terminal ends of the first barrier toward the sealing member and having a height that is smaller than the height of the first barrier, the opposite terminal ends defining the length of the first barrier.