Abstract: A cathode ray tube gun structure for minor deflection of an electron beam and employing electrostatic beam deflecting electrodes ultimately controlled by a deflection signal at a low voltage level for minor deflection of the beam. The minor beam deflection electrodes may be positioned in the low beam potential focus region of the gun to provide for minor deflection of the beam. The electrodes may be enclosed in a cylindrical electrode, the latter being used for focusing the beam, or the cylindrical electrode may be omitted in which case focusing and deflection functions are provided by the minor beam deflection electrodes. The minor beam deflection electrodes may be positioned in a high beam potential region, in which case low voltage control is provided by capacitive coupling through the envelope of the tube. The deflection electrodes may also be employed as the conventional second grid structure in a cathode ray tube gun structure.

Abstract: A face plate for a color pick-up tube which comprises a transparent substrate, stripe-like color filters formed on the transparent substrate, a protection layer deposited so as to cover the stripe color filters and the exposed portions of the transparent substrate, stripe-like transparent electrodes formed on predetermined portions of the protection layer, a photoconductive layer, bus bar electrodes and an insulation layer.The insulation layer and the protection layer are, respectively, formed of different materials which have different resistances to an etching solution, whereby the stripe-like filters are protected from the adverse influence of the etching solution used to form the insulation layer by a photoetching treatment.

Abstract: A photoemitter sensitive in the optical range of wavelengths comprises, according to the invention, a substrate made from p-type semiconductor materials of a group of chemical compounds A.sup.II B.sup.IV C.sub.2.sup.V, where A.sup.II are elements belonging to the second subgroup of group II: zinc and cadmium, B.sup.IV are elements belonging to the second subgroup of group IV: germanium, silicon and tin, C.sub.2.sup.V are elements belonging to the second subgroup of group V: phosphorus and arsenic, and a coating of cesium and oxygen. Homogeneity of the bulk and surface properties of the emitter substrate provides high sensitivity in the near-threshold region of photosensitivity corresponding to the width of the forbidden band of the photoemitter substrate.

Abstract: La.sub.2 O.sub.2 S particles are employed as a carrier host in conjunction with terbium activator ions in a cathodo-luminescent penetration phosphor composition for cathode ray display tubes. A thin layer of La.sub.2 O.sub.2 SO.sub.4 :Tb or La.sub.2 O.sub.2 SO.sub.4 :Tb,Eu is utilized to provide a barrier which must be penetrated by excitation electrons to produce green spectral emission from the particle thereby increasing the voltage-turn-on characteristic of the phosphor. Additionally, methods are disclosed for synthesizing the same in addition to an improved method for synthesizing a penetration phosphor particle comprising a core of La.sub.2 O.sub.2 S:Tb and a barrier layer of La.sub.2 O.sub.2 S:Tb,Eu.

Abstract: An electron beam producing arrangement for a cathode ray tube comprises a vessel shaped control electrode with a bore therein for passage of the electron beam and a hat shaped metal foil element with its crown in the bore and apertured for the passage of the electron beam and fixed to the edge of the bore by its brim.

Abstract: An evacuated envelope has a rectangular display section and a gun section at one side of the display section. The display section includes rectangular front and back walls in closely spaced, substantially parallel relation, and a plurality of spaced, substantially parallel support walls between the front and back walls forming a plurality of parallel channels. The gun section extends across one end of the channels and includes gun structure which will selectively direct one or more electron beams along each of the channels. In each of the channels is a beam guide which utilizes "slalom focusing" to confine the electrons in a direction normal to the front and back walls and guide the beam along the length of the channel wherein the electron beam is confined to an undulating path along the channel. The beam guide also includes means for laterally confining the electrons in the beam.

Abstract: A thin target wafer of silicon includes a light receiving surface which is mounted to an inner faceplate surface of a pickup tube envelope by an interposed region of transparent adhesive. The peripheral edge of the adhesive is sealed by a conductive sealant material to substantially prevent outgassing of the adhesive within the interior of the envelope. In one embodiment, a conductive sealant material is provided by which electrical contact from the wafer to an electrical connector, extending external to the envelope, is established.A method of assembly of the wafer with the faceplate is provided wherein residual bubbles of the interposed flowable adhesive are substantially collapsed by assembly of the wafer and the faceplate in a vacuum, and, thereafter, exposing the wafer-faceplate assembly to atmospheric pressure.

Abstract: An evacuated envelope has a rectangular display section and a gun section at one side of the display section. The display section includes rectangular front and back walls in closely spaced, substantially parallel relation, and a plurality of spaced, substantially parallel support walls between the front and back walls forming a plurality of parallel channels. The gun section extends across one end of the channels and includes gun structure which will selectively direct one or more electron beams along each of the channels. In each of the channels is a beam guide which utilizes "slalom focusing" to confine each electron beam in the channel and guide the beam along the length of the channel wherein the electron beam is confined to an undulating path along the channel. The beam guide also permits selective deflection of the electron beam out of the guide toward a phosphor screen on the inner surface of the front wall.

Abstract: 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.

Abstract: An evacuated envelope having substantially flat, spaced apart front and back walls and support walls extending between the front and back walls forming a plurality of parallel channels extending along the front and back walls. In each of the channels is an electron beam guide assembly which includes a pair of spaced, parallel plates fixedly secured together along parallel elongated edges by spacer members which are between the plates and to which the plates are mechanically secured. The plates have a plurality of openings therethrough arranged in rows longitudinally along and transversely across the plates with the openings in one plate being aligned with the openings in the other plate. The beam guide assembly fits in tracks formed along the support wall adjacent the back wall so as to support the beam guide assembly in fixed, spaced relation to the back wall.

Abstract: A shielded cathode support structure for electron gun assemblies of a cathode ray tube includes a cup-shaped control grid electrode, a cathode having emissive coating on a closed end, an eyelet member having one end affixed to and supporting the cathode and the opposite end flared and disposed within the control grid electrode to combine to provide a shield for cathode sublimation, and a support member having an upstanding flared portion surrounding an aperture for receiving the eyelet member and for contacting the flared end of the eyelet member with the support member affixed to an insulator rod of the electron gun assembly.

Abstract: An image intensifier tube having an output imaging screen comprising a scintillator layer of juxtaposed crystalline rods made of doped alkali-halide material, such as cesium iodide doped with sodium or thallium, for example.

Abstract: This disclosure depicts, in a color cathode ray tube, the combination comprising an approximately rectangular, flangeless, curved faceplate supporting on a concave inner surface thereof in a central region a phosphor screen comprising a pattern of red-emissive, blue-emissive and green-emissive phosphor triads. A low mass, approximately rectangular, non-self-rigid shadow mask has a central portion with a pattern of electron-transmissive apertures registered with the pattern of phosphor triads. The mask has a rim portion providing substantial rigidity with respect to axes normal to the sides thereof while providing for flexure of the mask with respect to its diagonals. A mask suspension system for establishing a predetermined position of the mask relative to and at a predetermined spacing from the inner surface of the faceplate includes four suspension means for mechanically coupling the mask directly to corner portions of the faceplate.

Abstract: This disclosure depicts a color television picture tube having an evacuated envelope, an electron gun, a color selection electrode defining a pattern of electron beam passing apertures and a multi-color image screen. The image screen has a corresponding pattern of triads of red-light-emissive, blue-light-emissive and green-light-emissive phosphor elements. The elements are spaced each from one another by a light absorbing material. The tube is characterized by having within at least selected triads in said pattern of triads a first phosphor element and associated electron beam landing area with either a positive or negative tolerance condition. The remaining two phosphor elements and associated beam landing areas have an opposite tolerance condition to that obtained for the first phosphor element.

Abstract: An electron gun system constructed of three electron guns for a color television display tube comprises at least one electrode in each gun located alongside, and electrically connected to, the corresponding electrodes in the other guns. The electrodes are positioned with respect to each other by means of metal braces which are secured thereto and the free ends of which are secured in pairs in insulating supporting members. The electrical interconnection of at least one group of such electrodes is achieved by means of at least two contact springs which are each inserted between one pair of braces secured to adjacent electrodes in the group and to a common insulating member. The springs are inserted after assembly of the guns and are held in place by physical interference with the braces they engage.

Abstract: An evacuated envelope including a plurality of spaced, parallel support walls extending and substantially perpendicular to flat, substantially parallel front and back walls to provide a plurality of parallel channels extending along the front and back walls. Between each of the support walls and the back wall are a plurality of longitudinally spaced spacer members, each of which has a ledge projecting into an adjacent channel but spaced from the back wall. Within each of the channels is an assembly which includes a pair of spaced, parallel focusing guide grid plates. One of the grid plates has spring tabs at spaced points along its edges which tabs fit under the ledges of the spacer members to hold the assembly in fixed position with respect to the back wall. The other grid plate has spaced location tabs along its edges which engage the spacer members to align the assembly in the channel with respect to the support walls.

Abstract: An evacuated envelope includes a transparent front panel having a cathodoluminescent screen thereupon and a back panel interconnectably sealed to the front panel. The back has a plurality of cathode stripes thereon. A plurality of vanes, spaced from and parallel to each other, extend between the front and back panels orthogonal to the cathode stripes. Electrodes to control the operation of the device are formed directly on the vanes. Any two adjacent vanes form an electron multiplier in which a self sustaining source of electrons is created only at a location along the vanes which is determined by the proper energizing of the cathode stripe at that location.

Abstract: In a rectangular aperture mask unit for a color television picture tube composed of a thin metal sheet presenting a mask region of generally rectangular form and a peripheral flange surrounding the mask region and extending at an angle thereto, and a metal frame enclosed by the flange in a telescoping manner and fastened thereto by a plurality of spot welds distributed around the periphery of the flange, the flange is provided, at each corner of the unit, with two spaced cutouts extending from the edge of the flange remote from the mask region and defining a tongue which is curved in the direction of the periphery of the flange, the length of the cutouts being equal to at least one-half the height of the flange, and each tongue is fastened to the frame by at least one spot weld.

Abstract: An improved color display system employing a beam penetration type cathode-ray tube with rapid color switching. The screen electrode is separated from the accelerating electrodes without the use of an isolating mesh so that the voltage applied to the screen electrode is switched across only a relatively small capacitance. The invention may be used in conjunction with either magnetic or electrostatic deflection beam penetration cathode-ray tubes as well as either magnetic or electrostatic focus tubes. Such display systems may be used for radar type random access or scanned raster type displays.

Abstract: This disclosure depicts and describes a unitized, in-line electron gun for television cathode ray tubes having a bead-type structure for mechanically supporting, spacing, aligning and electrically isolating gun components. This disclosure is particularly directed to an improved system of electrode support that absorbs stress induced during the mounting process to leave the gun structure substantially free of residual stress, thus reducing the incidence of bead fracture and electrode displacement.