The present invention provides for a field emission device including an anode assembly and a cathode assembly, wherein the cathode assembly further includes a substrate, a plurality of electrically conducting strips deposited on the substrate, and a continuous layer of diamond material deposited over the plurality of electrically conducting strips and portions of the substrate exposed between the plurality of electrically conducting strips. The field emission device may further include a grid assembly including a perforated silicon substrate, a first dielectric layer deposited on the silicon substrate, and a first conducting layer deposited on the first dielectric layer, wherein the first dielectric layer and the first conducting layer have perforations coinciding with perforations of the silicon substrate. The grid assembly may further include a second dielectric layer deposited on an underside of the silicon substrate, wherein the second dielectric layer has perforations coinciding with perforations of the silicon substrate.
An electron emission device includes a substrate, an anode electrode formed on the substrate, phosphor layers formed on the anode electrode, and resistance layers formed on the substrate and electrically connected to the anode electrode.
A tetraode field-emission display and a method of fabricating the same are disclosed. A mesh is disposed between an anode plate and a cathode plate. The mesh has a gate layer and a converging electrode layer separated by an insulation layer to form a sandwich structure. The mesh has a plurality of apertures in correspondence with each set of anode and cathode. The converging electrode layer is facing the anode plate, such that the divergent range of an electron beam emitted by an electron emission source can be restricted. Thereby, the electron beam can impinge the corresponding anode more precisely.
A method of fabricating a tetraode field-emission display. A mesh is disposed between an anode plate and a cathode plate. The mesh has a gate layer and a converging electrode layer separated by an insulation layer to form a sandwich structure. The mesh has a plurality of apertures in correspondence with each set of anode and cathode. The converging electrode layer is facing the anode plate, such that the divergent range of an electron beam emitted by an electron emission source can be restricted. Thereby, the electron beam can impinge the corresponding anode more precisely.
A method for fabricating a mesh structure of a tetraode field-emission display is disclosed. The mesh has a tri-layer structure including a gate layer, an insulation layer and a converging electrode layer. The converging electrode layer is selected from a metal conductive plate with a plurality of aperture, the insulation layer is coated on the converging electrode layer, and a gate is formed on the insulation layer.
A rim made of glass or ceramic material is attached to an alloy sheet with through holes therein at an elevated temperature. Voltages applied to the sheet may be used for focusing electrons passing there through onto a phosphor layer for displaying images. An optional insulating layer is formed on the sheet and optional grid electrodes are formed on the insulating layer for addressing and focusing. Upon cooling, the rim maintains the alloy sheet in tension. Holes in the alloy sheet and the grid electrodes are therefore maintained in proper alignment with cathodes and pixel dots despite temperature variations. The rim also forms a portion of the side wall of the display device, so that once the rim has been aligned with and attached to a cathode plate and face plate, the accurate alignment process has been completed and the assembly of the device is much simplified. By employing a thin rim and substrate, the combined electrode structure may be as thin as 3 millimeters or less, so that the distance between the face and back plates is no more than 10 millimeters, suitable for an ultrathin large screen display.
