Abstract:
A matrix addressable flat panel display includes a flat cathode (31) operable for emitting electrons to an anode (15) when an electric field is produced across the surface of the flat cathode by two electrodes (34) placed on each side of the flat cathode. The flat cathode (31) may consist of a cermet or amorphic diamond or some other combination of a conducting material and an insulating material such as a low effective work function material. The electric field produced causes electrons to hop on the surface of the cathode (31) at the conducting-insulating interfaces. An electric field produced between the anode (15) and the cathode (31) causes these electrons to bombard a phosphor layer (16) on the anode (15).
Abstract:
A field emission cathode includes a layer of conductive material (14) and a layer of amorphic diamond film (12), functioning as a low effective work-function material, deposited over the conductive material to form emission sites. The emission sites each contain at least two sub-regions having differing electron affinities.
Abstract:
A flat panel display for displaying visual information includes a plurality of corresponding light-emitting anodes (130), and field-emission cathodes (170), each of the anodes emitting light in response to emission from each of the corresponding cathodes, each of the cathodes (170) including a layer of low work function material having a relatively flat emission surface of a plurality of distributed localized electron emission sites and a grid assembly (102) interposed between the corresponding anodes (130) and cathodes (170) to thereby control emission levels to the anodes from the corresponding cathodes.
Abstract:
A matrix addressed diode flat panel display (820) including a diode pixel structure. The flat panel display includes a cathode assembly having a plurality of cathodes (210-280), each cathode including a plurality of cathode conductive material (440) and a layer of low effective work-function material (460) deposited over the cathode conductive material and an anode assembly having a plurality of anodes (290-292), each anode including a layer of anode conductive material (410) and a cathodoluminescent material (430) deposited over the anode conductive material, the anode assembly located proximate the cathode assembly to thereby receive the charged particle emissions from the cathode assembly. The display further includes means (100) for selectively varying field emissions between the plurality of corresponding light-emitting anodes and field-emission cathodes.
Abstract:
A method is provided for fabricating a display cathode which includes forming a conductive line adjacent a face of a substrate. A region of amorphic diamond is formed adjacent a selected portion of the conductive line. The figure is an enlarged exploded cross-sectional view of a diode display unit (10) which includes two primary components: cathode plate (12) and anode plate (14). A vacuum is maintained between the plates by a seal (16). Regularly spaced pillars (26) separate cathode plate (12) and anode plate (14). A plurality of low effective work-function emitter areas (24) are formed by respective layers of amorphic diamond along conductive lines (20) disposed on substrate (18). A layer (34) of photo-emitting material is formed along transparent conductive lines (30) which are disposed upon substrate (28). Enlarge pads or leads (32) allow connection to an external signal source.
Abstract:
A field emission cathode includes a layer of conductive material (14) and a layer of amorphic diamond film (12), functioning as a low effective work-function material, deposited over the conductive material to form emission sites. The emission sites each contain at least two sub-regions having differing electron affinities.
Abstract:
A method is provided for fabricating a display cathode which includes forming a conductive line adjacent a face of a substrate. A region of amorphic diamond is formed adjacent a selected portion of the conductive line. The figure is an enlarged exploded cross-sectional view of a diode display unit (10) which includes two primary components: cathode plate (12) and anode plate (14). A vacuum is maintained between the plates by a seal (16). Regularly spaced pillars (26) separate cathode plate (12) and anode plate (14). A plurality of low effective work-function emitter areas (24) are formed by respective layers of amorphic diamond along conductive lines (20) disposed on substrate (18). A layer (34) of photo-emitting material is formed along transparent conductive lines (30) which are disposed upon substrate (28). Enlarge pads or leads (32) allow connection to an external signal source.
Abstract:
A matrix addressed diode flat panel display (820) including a diode pixel structure. The flat panel display includes a cathode assembly having a plurality of cathodes (210-280), each cathode including a plurality of cathode conductive material (440) and a layer of low effective work-function material (460) deposited over the cathode conductive material and an anode assembly having a plurality of anodes (290-292), each anode including a layer of anode conductive material (410) and a cathodoluminescent material (430) deposited over the anode conductive material, the anode assembly located proximate the cathode assembly to thereby receive the charged particle emissions from the cathode assembly. The display further includes means (100) for selectively varying field emissions between the plurality of corresponding light-emitting anodes and field-emission cathodes.
Abstract:
A flat panel display for displaying visual information includes a plurality of corresponding light-emitting anodes (130), and field-emission cathodes (170), each of the anodes emitting light in response to emission from each of the corresponding cathodes, each of the cathodes (170) including a layer of low work function material having a relatively flat emission surface of a plurality of distributed localized electron emission sites and a grid assembly (102) interposed between the corresponding anodes (130) and cathodes (170) to thereby control emission levels to the anodes from the corresponding cathodes.