Patent ID: 7830078

Claim:
A field emission backlight module applied in a liquid crystal display (LCD), said LCD including an LCD panel, and said field emission backlight module comprising: a substrate; a plurality of light-emitting units arranged on an upper surface of said substrate in array, and each of said light-emitting units including: a fluorescent powder layer provided on the upper surface of said substrate; a cathode provided on the upper surface of said substrate adjacent to one side of said fluorescent powder layer; and an anode provided on the upper surface of said substrate adjacent to another side of said fluorescent powder layer opposite to said cathode, so that electrons at said cathode are excited to directly penetrate from only a parallel direction said fluorescent powder layer to produce light, said electrons are then attracted by said anode, and a glass substrate provided above said light-emitting units to locate behind said LCD panel, such that light produced by said fluorescent powder layer diverges toward said LCD panel, wherein said substrate is made of an insulating material and said fluorescent powder layer is not in contact with said cathode and said anode.