摘要:
An image display device is provided in which the overall brightness of an image can be varied without adversely affecting hue and contrast. The image display device includes emitters 16 connected to a cathode electrode 15, a gate electrode 13, an anode electrode 3, transistors Tr1 and Tr2, and a capacitor 12. A voltage applied to the capacitor 12 is varied to display an image. A constant voltage is applied to the gate electrode 13 to change a time ratio Du. Thus, the overall brightness of an image can be adjusted.
摘要:
A hollow carbon nanoballoon structure having a relatively large closed space, and a method of producing a carbon nanoballoon structure capable of easily and stably producing such a structure. The carbon nanoballoon structure is obtained by heating soot prepared by arc discharge using carbon electrodes, soot prepared by vaporizing. carbon by laser irradiation, or carbon black having a specific surface area of 1000 m2/g or more and a primary particle diameter of 20 nm or more at a high temperature in an inert gas atmosphere, and includes graphite sheets linked to form a curved surface.
摘要:
Described herein is a method of preparing nano-carbon; a method of preparing an electron emitting source by supporting the soot; and an apparatus for preparing the same. A torch electrode 10 of an arc torch 1 as a first electrode is placed opposite to a material to be arced 2 using graphite as a second electrode. A voltage is applied between the torch electrode 10 and an edge portion of the material to be arced 2 to generate are discharge, to evaporate the edge portion of the material to be arced 2 exposed to the arc discharge, to generate soot. The soot thus generated is deposited on the surface of a substrate opposite to an arc discharge-generating area through a mask having a patterned opening.
摘要:
A vacuum envelope that can improve the vacuum degree in a field emission device is provided. The vacuum envelope includes the cathode side substrate 2 on which field emission elements are formed and the anode substrate 1 spaced by a predetermined distance in the electron emission direction. At least two openings are formed before sealing the vacuum envelope. The remaining gas is ousted from the vacuum envelope by introducing a high temperature gas inside the vacuum envelope for a predetermined period of time. Thereafter, one of the openings is sealed while the envelope is being evacuated to a vacuum state through the remaining openings.
摘要:
A vacuum container capable of arranging a getter member therein while preventing an increase in overall height of an envelope and therefore the vacuum container. An anode substrate on which anode electrodes providing a display section are formed and a cathode substrate on which field emission cathodes are formed are arranged opposite to each other and sealedly joined to each other through an outer periphery thereof, to thereby provide an envelope. The cathode substrate is formed with a through-hole communicating with an interior of the envelope. The through-hole has a getter member received therein. The cathode substrate is provided on a portion of an outer surface thereof at which the through-hole is formed with an evacuation pipe through which the envelope is evacuated.
摘要:
A field emission type fluorescent display device capable of exhibiting high luminescence under a low voltage while minimizing leakage luminescence and color mixing, to thereby improve display quality. An anode and a field emission cathode are arranged opposite to each other and the cathode is divided into a plurality of unit regions in a matrix-like configuration, which are matrix-driven, resulting in a display being selectively carried out. The unit regions each are divided into a plurality of subregions and the cathode and anode are divided into a plurality of strip-like electrodes perpendicular to each other, respectively. The strip-like electrodes each correspond to each of subregions and are commonly connected to each other at every second interval. Also, a focusing electrode may be arranged between the gate and the anode so as to surround the unit regions.
摘要:
A flat-type fluorescent display device permitting luminous display to be observed through only a front glass cover while substantially increasing luminance. A front glass cover is provided on an inner surface thereof with FECs constituted by cathode lines, insulating layers, emitters and gate lines so as to define light-permeable sections between FECs. A substrate is formed opposite to the light-permeable sections with anodes constituted by anode-lines and phosphor layers. Electrons emitted from the FECs impinge on the anodes, leading to luminescence of the phosphor layer, which is then observed through the light-permeable sections of the front glass cover.
摘要:
A process for manufacturing a field emission element including a substrate, and an emitter and a gate each arranged on the substrate is provided. The emitter is formed at at least a tip portion thereof with an electron discharge section, which is formed of metal or semiconductor into a monocrystalline structure or a polycrystalline structure preferentially oriented in at least a direction perpendicular to the substrate by deposition.
摘要:
A phosphor capable of exhibiting luminescence with high efficiency by excitation due to impingement of electrons accelerated under an anode voltage of hundreds volts to about 2 kV thereon and a method for preparing the same are disclosed. Mn is ion-implanted in ZnGa.sub.2 O.sub.4 which is a matrix crystal of the phosphor deposited on a substrate. Three kinds of implantation energy of 150 keV, 90 keV and 30 keV are selected and the ion implantation is effected three times in the order of the level of the implantation energy. A concentration of Mn is rendered substantially constant within a depth range between 100 angstrom and 1000 angstrom of a depth of 2000 angstrom or less in a luminous region of the phosphor. The ion implantation thus carried out three times permits the phosphor to exhibit increased luminous efficiency as compared with one-time ion implantation. The ion implantation permits Mn acting as a luminous center to be dispersed over a desired depth of the phosphor, resulting in lattice defects in the phosphor being widely distributed, leading to a decrease in the concentration of defects in the phosphor.
摘要翻译:公开了一种荧光体,其能够通过在数百伏特至约2kV的阳极电压下加速的电子冲击而通过激发而以高效率显示发光,以及其制备方法。 在作为沉积在基板上的荧光体的矩阵晶体的ZnGa 2 O 4中离子注入Mn。 选择150keV,90keV和30keV的三种注入能量,并且按照注入能级的顺序进行三次离子注入。 在荧光体的发光区域中,在浓度为100埃至1000埃的深度范围内,Mn的浓度基本上保持恒定。 这样进行三次离子注入使得荧光体与一次离子注入相比表现出增加的发光效率。 离子注入允许作为发光中心的Mn分散在荧光体的所需深度上,导致荧光体中的晶格缺陷广泛分布,导致荧光体中缺陷的浓度降低。
摘要:
A casing for a display device of the tipless type is disclosed which is capable of being readily manufactured, and allowing a display device to have a good space factor and exhibit excellent display characteristics. The casing comprises a casing body formed with an evacuation hole and a planar plate lid member arranged to sealingly close the evacuation hole by means of a sealer when the casing is evacuated.