摘要:
An internal resistive coating for a cathode ray tube is derived from a suspension which includes electrically conductive particles, electrically insulative particles, silicate solids and a wetting agent of the anionic class. The internal resistive coating is made by mixing the insulative particles, a silicate solution and water, milling the mixture, adding electrically conductive particles to the mixture, milling the electrically conductive particles and mixture to provide a suspension, preparing a stock solution of wetting agent of the anionic class, and stirring the wetting agent stock solution into the suspension to provide a wall dispersed resistive coating suspension.
摘要:
A multistable or memory electron beam addressed electroluminescent display panel is provided. The display panel is electron beam activated in the presence of an A. C. field, without the need of prior art flood guns. The panel may be activated or switched by direct electron beam activation of an electroluminescent film or by electron beam induced light radiation from a cathodoluminescent layer or from an insulating layer.
摘要:
A composition of matter such as an X-ray image intensifying screen which includes halide-containing phosphor particles which are admixed or combined with or have reacted with at least one metal-organic substance such that the fluorescence power of said phosphor particles is less liable to be adversely affected by moisture.
摘要:
An electronic device for processing optic, infrared or electronic signals three dimensions, that is, area and time. The device features an amplification function and includes the use of melt grown oxide metal ceramic substrate material which allows high frequency operation and utilizes microchannel amplifier techniques to reduce operational charge buildup.
摘要:
A superorthicon-type television camera tube with a photoelectric cathode, a target spaced opposite the cathode and including a film and a fine mesh grid arranged between the film and the cathode. A coating is provided on both the grid and the film and is constituted of a semiconductor material having an inelastic electron reflection factor lower than that of the material of the target. The coating of semiconductor material is on the film and on the grid on the side facing the cathode.
摘要:
The structure presents an improved method of mounting targets, such as silicon targets, in camera tubes such as vidicons. The target is mounted in a supporting structure which is held in place between the end of the camera tube bulb and the faceplate of the tube by the seal which holds the faceplate to the bulb.
摘要:
An electro-optical transducer and storage tube employing a bistable semiconductor switching means switched from one state to another responsive to input signals or information for controlling the application of electric fields to areas of a layer of material of the type which provides an optical output responsive to an applied electric field whereby to form an optical display of the signals or information and store the same until the bistable device is switched to its off state. A high density array of bistable switches provides high resolution of optical output, and high current density capability in the bistable switches provides high voltage level switching across the layer providing optical output for optimum brightness of the visual display.
摘要:
A dark trace cathode ray tube comprising an evacuated envelope with a transparent faceplate, a cathodochromic screen mounted within said envelope and adjacent said faceplate comprising a layer of a cathodochromic material on a transparent conductive support, means for scanning selected areas of said cathodochromic screen with electrons, means for flooding said cathodochromic screen with electrons of an energy appropriate to darken said scanned areas but of an energy which substantially is ineffective to darken the unscanned area, a grounded collector mesh positioned adjacent said cathodochromic screen and in the path of said electrons from said flooding means and said scanning means.
摘要:
Herein disclosed is an improved character generation cathode-ray tube having a target made of tantalum and having a patterned tantalum oxide film formed on one surface thereof.
摘要:
An image-retaining panel receives a momentarily projected image, and retains a replica of that image for extended periods irrespective of local lighting. The panel consists of a pair of electroluminescent slabs electrically connected by an opaque layer that conducts only laterally. The viewing image formed on the outer electroluminescent slab does not affect the photoconductivity of the medium which drives the inner electroluminescent slab. Hence, ambient light falling on the outer slab does not affect the image.