Abstract:
A method of making an electron emissive material using combinatorial chemistry techniques is provided. The method includes providing a plurality of pixels of the electron emissive material, each pixel having at least one different characteristic from any other one of the plurality of pixels, and measuring at least one property of each pixel. The measurement may include a measurement of the electron emissive material work function using a Kelvin probe or other work function measurement systems.
Abstract:
A glow discharge lamp has a discharge vessel, a pair of electrodes mounted in the discharge vessel, ionizable filling which is principally made of rare gas and filled in the discharge vessel, and emissive material containing zinc alloy and provided on at least one of the electrodes.
Abstract:
A cold cathode discharge device with high efficiency of light emission and long life is prepared by a cold cathode having both high secondary electron emission and anti-spattering property. Using carbon system cold cathodes constituted of a mixed phase of diamond and graphite, a cold cathode discharge device with high efficiency of light emission and long life is realized. It is desirable that an element having a wavelength of light emission equal to or shorter than 200 nanometers should be mixed in the discharge gas.
Abstract:
A fluorescent lamp comprises a glass tubular body defining a discharge space, and first and second electrode assemblies mounted in the discharge space in opposition to each other, each of the electrode assemblies comprising a first electrode and a second electrode. Each of the first electrodes comprises a metal lead wire with an electron-emitting material disposed on a free end thereof, and each of the second electrodes comprises a cup-shaped tube coaxially surrounding one of the first electrodes and the electron-emitting material disposed on the first electrode. The second electrode tube and the electron emitting material therein form an annular gap therebetween.
Abstract:
A field emission cathode for use in flat panel displays is disclosed comprising a layer of conductive material and a layer of amorphic diamond film, 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. Use of the cathode to form a computer screen is also disclosed along with the use of the cathode to form a fluorescent light source.
Abstract:
A cold cathode electrode for a discharge lamp has a metal substrate supporting a layer of diamond, so as to increase the electron yield of the electrode. The substrate may be a helical nickel wire with a layer of diamond forming it into a continuous tube.
Abstract:
Applicants have discovered methods for making electron emitters using commercially available diamond particles treated to enhance their capability for electron emission under extremely low electric fields. Specifically, applicants have discovered that electron emitters comprising ultra-fine (5-10,000 nm) diamond particles heat-treated by a hydrogen plasma, can produce electron emission current density of at least 0.1 mA/mm.sup.2 at extremely low electric fields of 0.5-1.5 V/.mu.m. These field values are about an order of magnitude lower than exhibited by the best defective CVD diamond and almost two orders of magnitude lower than p-type semiconducting diamond. Emitters are preferably fabricated by suspending the ultra-fine diamond particles, preferably in the nanometer size range, in an aqueous solution, applying the suspension as a coating onto a conducting substrate such as n-type Si or metal, and then subjecting the coated substrate to a plasma of hydrogen, preferably at temperatures above 300.degree. C. for a period of 30 minutes or longer. The resulting emitters show excellent emission properties such as extremely low turn-on voltage, good uniformity and high current densities. It is further found that the emission characteristics remain the same even after the plasma treated diamond surface is exposed to air for several months.
Abstract translation:申请人已经发现使用经过处理以提高其在极低电场下电子发射能力的市售金刚石颗粒来制造电子发射体的方法。 具体地,申请人已经发现,包含由氢等离子体热处理的超细(5-10,000nm)金刚石颗粒的电子发射体可在0.5-1.5的极低电场下产生至少0.1mA / mm 2的电子发射电流密度 V /亩。 这些场值比由最好的有缺陷的CVD金刚石显示的低一个数量级,比p型半导体金刚石低两个数量级。 优选地,通过将优选在纳米尺寸范围的超细金刚石颗粒悬浮在水溶液中,将悬浮液作为涂层施涂到诸如n型Si或金属的导电基材上,然后对涂覆的基材 至氢的等离子体,优选在高于300℃的温度下持续30分钟或更长时间。 所得到的发射体显示出优异的发射特性,例如极低的导通电压,良好的均匀性和高的电流密度。 进一步发现即使在等离子体处理的金刚石表面暴露于空气几个月之后,发射特性也保持不变。
Abstract:
A field emission cathode for use in flat panel displays is disclosed comprising a layer of conductive material and a layer of amorphic diamond film, 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. Use of the cathode to form a computer screen is also disclosed along with the use of the cathode to form a fluorescent light source.
Abstract:
A display device for use in conjunction with a computer system includes a cathode having a layer of conductive material and a layer of low-effective work function material deposited over the conductive material wherein the low-effective work function material has an emission surface comprising a plurality of distributed localized electron emission sites. The emission sites may have electrical properties which are discontinuous from each other. The emission surface may be relatively flat.
Abstract:
A field emission cathode is provided which includes a substrate and a conductive layer disposed adjacent the substrate. An electrically resistive pillar is disposed adjacent the conductive layer, the resistive pillar having a substantially flat surface spaced from and substantially parallel to the substrate. A layer of diamond is disposed adjacent the surface of the resistive pillar.