Patent ID: 7795793

Claim:
A surface light source comprising: a body including a first body part and a second body part, wherein the second body part faces the first body part and wherein the first and second body parts are substrates comprising transparent material; an electrode disposed on the first body part; a transparent electrode disposed on the second body part; an electron-emitting member disposed on the electrode to emit an electron toward the transparent electrode; a conductive grid member disposed between the electrode and the transparent electrode to accelerate the electron emitted from the electron-emitting member; a fluorescent layer disposed on the transparent electrode to convert the electron into visible light; and first and second supporting parts integrally formed with the body to support the first body part and the second body part, wherein the first and second supporting parts, the first body part, and the second body part comprise the same transparent material, and wherein the first and second supporting parts are separated from each other inside the body.