Abstract:
An image display device is provided which is capable of increasing a dielectric voltage while reducing a depth and a frame region. The image display device is provided with a rear plate having surface conduction electron-emitting devices that are electron beam source and a faceplate having an anode electrode and a first potential regulating member on an identical surface. The anode electrode and the first potential regulating member are arranged separately from each other. The anode electrode is regulated to an electron accelerating potential. The first potential regulating member is regulated to a potential lower than that of the anode electrode. A second potential regulating member regulated to a potential lower than that of the anode electrode is provided at least in the vicinity of an end of the first potential regulating member on the anode electrode side on a surface on the opposite side of a surface having the first potential regulating member of the faceplate.
Abstract:
A system and method for controlling an electron beam in accordance with the present invention includes an electron gun, a cathode ray tube with a faceplate, a deflection drive, a pair of positioning electrodes, an electron beam controller, and a pair of capacitors. The electron gun generates an electron beam in the cathode ray tube which is deflected in a desired direction towards and between at least one pair of positioning electrodes formed on the inner surface of the faceplate. Each of the positioning electrodes generates a position signal which is capacitively coupled by the capacitors to the electron beam controller. The electron beam controller adjusts the deflection of the electron beam in response to the position signals. The capacitors comprise a pair of first and second capacitor plates which are separated by the cathode ray tube. The first capacitor plates are disposed on opposing sides of an inner surface of the cathode ray tube adjacent to the faceplate. The second capacitor plates are disposed on the outer surface of the cathode ray tube, each of the second capacitor plates being disposed opposite one of the first capacitor plates.
Abstract:
A pick-up tube includes a generally cylindrical envelope having a faceplate at one end thereof and a cathode in the other end. A photoconductive target electrode is adjacent to the faceplate and a mesh assembly is disposed in spaced relation adjacent to the target electrode, between the target electrode and the cathode. The mesh assembly comprises a mesh electrode disposed between a frusto-conically shaped mesh support ring and a bow-shaped mesh damping ring. The mesh damping ring is fixedly attached at a plurality of points around its outer periphery to the mesh electrode and the mesh support ring. The inner periphery of the mesh damping ring is formed into a plurality of arcuately shaped regions extending therearound. Each of the arcuately shaped regions is interconnected by a portion of the damping ring which is in contact with the mesh electrode. The annular region between the inner periphery and the outer periphery of the bow-shaped damping ring and the axially extending region between the damping ring and the mesh electrode forms a vibration damping chamber having a plurality of entrances formed by the arcuately shaped regions of the damping ring.
Abstract:
The specification describes a video storage system employing a unique memory tube. The tube employs a single read-write electron beam. The storage target is an insulating grid formed directly on a semiconductor substrate. Since the grid is supported, it can be made very fine and the processing advantageously uses photolithographic techniques.
Abstract:
The beam of charged particles of a luminescent screen tube is displaced under the combined action of two orthogonal scans, the spot being constrained to follow guiding strips formed on the luminescent screen surface and responsive to the position of said spot by modulating the control of one of the two scans by means of an error signal which is deduced from the indications supplied by the guiding strips. By means of continuous correspondence control, the spot is initially guided over an entire line entrance surface towards the beginning of the path to be followed by said spot before it passes onto the screen proper.
Abstract:
A field emission device has pixels with cathode and anode provided on the same plane, so that electrons directly penetrate an independently provided fluorescent powder layer to produce light, giving the display the advantages of easy focusing, no dark spots, high brightness, and enhanced light emitting performance. Since the light produced by the fluorescent powder layer is not blocked by the anode, the problem of charge accumulation on the fluorescent powder layer is avoided, and it is not necessary to use expensive light-transmittable conducting glass as the anode. With the cathode and the anode located at the same plane, it is not necessary to use a high precision spacer to maintain a fixed distance between the cathode and the anode, enabling the device to be manufactured at reduced cost and high good yield.