Patent ID: 7511415

Claim:
A backlight for a liquid crystal display device that is arranged at the backside face of the liquid crystal display device for lighting the backside face, comprising: a panel case provided with a flat panel section opposite to the backside face of the liquid crystal display device; plural phosphor-coated anode sections each arranged flatly at the inner face of the flat panel section of the panel case; and plural linear cathode sections each arranged below each of the plural phosphor-coated anode sections in the panel case, wherein each of the plural linear cathode sections has a conductive wire arranged so as to extend linearly in the direction generally parallel to each of the plural phosphor-coated anode sections, metal field concentration assisting concave/convex sections formed on the outer peripheral surface of the conductive wire and a field electron emitter composed of a carbon-based film having sharp microscopic sections on the metal field concentration assisting concave/convex sections, each field electron emitter of each of the plural linear cathode sections is provided so as to be capable of radially emitting electrons toward each of the plural phosphor-coated anode sections.