Patent ID: 7405519

Claim:
A flat fluorescent lamp, comprising: a chamber having a first inner wall and a second inner wall disposed oppositely; a discharge gas disposed inside the chamber; a fluorescent material disposed on the first inner wall and the second inner wall; a plurality of first electrode sets disposed on the first inner wall, and each first electrode set comprising: two first electrodes; and a second electrode disposed between the first electrodes; a plurality of second electrode sets aligned with the first electrode sets and disposed on the second inner wall, and each second electrode set comprising: two third electrodes; and a fourth electrode disposed between the third electrodes, wherein a first light-emitting area and a second light-emitting area are formed in each pair of the first electrode set and the second electrode set that are disposed oppositely, and the projections of the first light-emitting area and the second light-emitting area on the first inner wall are not overlaid or just partially overlaid; and a dielectric layer overlying the first electrode sets and the second electrode sets.