Patent ID: 6943494
Filing Date: 2005-09-13
Classification: H01J

Abstract:
1. A field emitting luminous device comprising: a cathode electron emitting unit, which emits a plurality of primary electrons; an electron amplifying unit, which is installed on top of the cathode electron emitting unit for amplifying the primary electrons and supporting the field emitting luminous device; wherein the electron amplifying unit contains: a plurality of insulator layers and a plurality of electrode layers, the plurality of insulator layers sandwiching the plurality of electrode layers, each of the plurality of electrode layers being a thin metal plate with a plurality of through holes and sandwiched between two of the plurality of insulator layers, the surface of each of the plurality of electrode layers having an electrode amplifying material, and the two of the plurality of insulator layers providing electrical insulation; a panel unit, which contains: an upper electrode layer, which is made of a transparent conductive material and is installed on top of the electron amplifying unit and has a light-emitting layer on its bottom surface; and a transparent panel, which is installed on top of the upper electrode layer; and an electric power supply unit, which provides the required voltages and currents for the operation of the device; wherein the primary electrons are attracted by a potential imposed on the cathode electron emitting unit, the electrode layer, and the upper electrode layer to move toward the panel unit, the primary electrons hit the electron amplifying material on the surface of the electrode layer to produce secondary electrons, and the secondary electrons travel through the through holes and hit the light-emitting layer, producing fluorescence penetrating through the transparent panel, the sizes of the plurality of through holes on the plurality of electrode layers become larger as on goes from the cathode electron emitting unit toward the panel.