Field-emission display having filter layer

A field mission display has a filter layer, using three primary colors, green, red and blue, filters or screen printing or spray to form three primary colors on the light source output surface of the anode electrode layer thereof. When a voltage is applied from a driving circuit to the gate conductive layer and the cathode electrode layer, an electron beam is generated from the cathode electrode layer. The electron beam impinges the white phosphor powder of the anode electrode to create a white light source. The white light is then processed three primary color filters or structures to create a color image. Such device simplifies the structure of the anode electrode layer and the driving circuit. In addition, the luminescent efficiency of various colors of phosphor powder is no longer a factor affects the luminescent characteristics display.