摘要:
An emitter material for a CRT comprises mixed crystal or solid solution of at least two kinds of alkaline earth metal carbonate, wherein at least one alkaline earth metal carbonate is dispersed or separated in the mixed crystal or solid solution. The alkaline earth metal carbonate, which is an emitter material for the CRT, is coated onto the base metal and thermally decomposed in a vacuum to from an emitter of an alkaline earth metal. This emitter, which is proper for a larger screen size, high brightness and high resolution CRT, can be provided with enough life characteristics even under the operating condition of the emission current density of 2A/cm.sup.2.
摘要:
A cathode for an electron tube is described that has little deterioration of emission current after long operation, is used as a long-life oxide cathode even with high current density in a CRT, and is economical. An emissive material is adhered onto a substrate that is positioned at one opening of a cylindrical sleeve having a built-in heater coil and that includes nickel as a main component by thermally decomposing carbonate including an alkaline earth metal oxide and at least one element selected from the group consisting of titanium, nickel, zirconium, vanadium, niobium and tantalum.
摘要:
An emitter material for a CRT comprises mixed crystal or solid solution of at least two kinds of alkaline earth metal carbonate, wherein at least one alkaline earth metal carbonate is dispersed or separated in the mixed crystal or solid solution. The alkaline earth metal carbonate, which is an emitter material for the CRT, is coated onto the base metal and thermally decomposed in a vacuum to from an emitter of an alkaline earth metal. This emitter, which is proper for a larger screen size, high brightness and high resolution CRT, can be provided with enough life characteristics even under the operating condition of the emission current density of 2A/cm2.
摘要:
A cathode for an electron tube formed by coating the base of the cathode for the electron tube with an alkaline-earth metal carbonate containing at least barium as the alkaline-earth metal, and thermally decomposing in a vacuum to generate an emitter mainly comprising an alkaline-earth metal oxide, wherein a mixture of two or more kinds of alkaline-earth metal carbonate crystalline particles having different shapes is used as the above mentioned alkaline-earth metal carbonate. Since the present invention can provide a cathode for electron tube having improved both cut-off drift and emission characteristic at the same time, it is useful as a cathode for the electron gun of a CRT, or a cathode for the electron gun of an electron microscope.
摘要:
An antireflection structure that can be formed in a desired shape, and a method for manufacturing the same are provided. An antireflection structure 100 includes a resin layer 200 formed in a desired shape, and inorganic material fine particles 201 dispersed inside the resin layer. A plurality of fine concaves 202 having an average inner diameter shorter than or equal to the minimum wavelength of light whose reflection should be suppressed are formed at the surface of the antireflection structure 100, thereby reducing the equivalent refractive index at the surface of the resin layer 200. The fine concaves 202 are formed by, after forming a composite material in which the nanosized inorganic material fine particles 201 are dispersed in the resin layer, dissolving the inorganic material fine particles 201 dispersed at the surface of the resin layer 200, using a solvent that dissolves only the inorganic material fine particles 201.
摘要:
A method for producing an oxide cathode including a sleeve containing a heater coil, a cathode substrate provided on one end of the sleeve, and an emissive material layer formed by thermally decomposing an alkaline earth metal carbonate layer adhered onto the cathode substrate, which method includes adhering the alkaline earth metal carbonate onto the cathode substrate so that it has a bulk density of 0.5 to 0.8 g/cm3, then pressing it so that the bulk density becomes not more than 0.9 g/cm3, and then thermally decomposing it in vacuum. Accordingly, an oxide cathode in which the current density distribution of emission electrons is smooth and an electron emission characteristic is not deteriorated when operated for a long time is realized, and a method for producing a cathode-ray tube with high resolution in which moire is invisible is provided.
摘要翻译:一种制造氧化物阴极的方法,该方法包括:包含加热器线圈的套筒,设置在套筒一端的阴极基板和通过热分解附着在阴极基板上的碱土金属碳酸盐层形成的发光材料层,该方法包括 将碱土金属碳酸盐粘附到阴极基体上,使其具有0.5至0.8g / cm 3的堆积密度,然后压制,使得堆积密度不超过0.9g / cm 3,然后在真空中热分解。 因此,实现了长时间运行时发射电子的电流密度分布平滑且电子发射特性不劣化的氧化物阴极,以及制造高分辨率的阴极射线管的方法,其中莫尔是 提供隐形。