Abstract: A matrix addressed flat panel display, is disclosed herein and includes a lower planar array of spaced apart, parallel, electrically conductive leads and a matrix array of field emission cathodes connected to and extending up from the lower planar array of electrically conductive leads. An upper matrix array of spaced-apart parallel electrically conductive leads is located above and spaced from the lower array of leads and from the cathodes, such that the upper leads extend normal to the lower leads, crossing the latter immediately above the cathodes, and such that those segments of the upper leads that actually cross over the lower leads are positioned in a plane closer to the lower leads than the rest of the upper leads. The upper and lower planar arrays of leads are electrically insulated from one another by means of a pair of separately formed layers of dielectric material disposed therebetween.

Abstract: A convergence correcting device for an in-line type color picture tube is disclosed. The characteristic portion of the invention includes a pair of magnets and a bobbin. The bobbin includes a vertical deflection auxiliary magnetic field generating section, horizontal deflection auxiliary magnetic field generating sections, and magnetic field adjusting sections. The vertical deflection auxiliary magnetic field generating section is disposed at the center of the device, and receives a core and a coil wound thereon. The horizontal deflection auxiliary magnetic field generating sections are disposed at the left and right of the vertical deflection auxiliary magnetic field generating sections, and receive cores and coils wound thereon. The magnetic field adjusting sections are disposed at the outsides of the horizontal deflection auxiliary magnetic field generating sections, and are provided with thread portions for coupling with the magnets.

Abstract: An igniter plug has a tubular metallic shell and an annular ground electrode each connected in series by an interfitting, and fixed by welding. The igniter plug further has a tubular insulator placed within both the metallic shell and the ground electrode, while a center electrode is placed within the insulator to be surrounded by the ground electrode. A plurality of lock arms are provided with a front end of the metallic shell, and each top end of lock arms has a pawl which is brought into an engagement with an inner wall of a groove which is provided with an inner surface of the ground electrode when the metallic shell and the ground electrode are connected, and at the same time, the insulator is brought into an engagement with an inner side of each lock arm to deter the lock arms from being flexed inwardly when the insulator is placed.

Abstract: A shadow mask frame for a color picture tube has side walls which are cut out to form cut-out sections, leaving only a plurality of bridge portions. A separate supporting means for the frame is provided in a direct contact with the shadow mask. According to the shadow mask frame of the present invention, the compensation period or the purity drift period from the starting of the operation of the color picture tube to the stabilization of the screen images will become very short.

Abstract: A TFEL device for producing a high brightness output comprises a substrate supporting a laminar thin film stack including a front electrode layer and a rear electrode layer sandwiching an electroluminescent laminate comprising an electroluminescent layer sandwiched by a pair of insulating layers. A thin film insulating layer is grown by evaporation on the glass substrate and produces a surface having a degree of roughness which is replicated by the remaining thin film layers. The surface contour at the interfaces between each of the thin film layers is convoluted which reduces internal light reflection and provides more light output at the front of the panel.

Abstract: A keyboard (2) has two transverse arrays of conductors (R0-R13, C0-C7) defining a number of rows and columns of cross-points at each of which a key is positioned whereby depression of a key causes the conductors at the corresponding cross-points to be electrically connected. A scanning device (1) connected to each of the conductors and adapted during a scanning operation to apply a high or low potential to all the conductors of the two arrays and subsequently sequentially to apply a potential of the opposite type to each conductor of one array and to monitor the potential of the conductors of the other array such that if the potential of a conductor of the other array changes, this indicates that the key at the corresponding cross-point is depressed.

Abstract: Low-pressure mercury vapor discharge lamp having a discharge vessel filled with mercury and a rare gas, which discharge vessel comprises two substantially parallel, mainly rectangular flat glass plates located at a relatively short distance from each other and being transparent to light, which plates are connected together in a gas-tight manner proximate their circumference and form upright walls. Electrodes, between which a discharge is maintained in the discharge vessel during operation arranged on the outer side of the discharge vessel. The electrodes are in the form of strips of conducting material which are arranged on at least two facing upright walls and which extend substantially throughout the length of these walls.

Abstract: A low work function surface for a dispenser cathode structure. The cathode structure comprising a heater and an electron emitting surface substrate or core composed of a porous tungsten matrix impregnated with a barium containing impregnant distributed therethrough. The structure is made by a method in which a nanometer thick layer of scandium oxide is sputtered onto the outermost surface of the impregnated tungsten core, or substrate, and then oxidized by exposing the sputtered scandium oxide surface layer to an oxygen atmosphere. The oxidized surface layer is activated by turning on the heater, for example, to cause the release of a small portion of the barium in the barium-containing impregnant. Some of the released barium migrates into the scandium oxide surface layer to form a monolayer of barium oxide on at least a portion thereof.

Abstract: A metal halide arc discharge lamp includes an arc tube and a light-transmissive shroud mounted within a lamp envelope. The arc tube and the shroud are mechanically attached to a frame. The frame is mechanically supported within the lamp envelope by resilient spring members. Since the frame is mechanically and electrically isolated from the lamp stem, leakage current between the frame and the electrical inleads is eliminated, thereby reducing sodium loss from the arc tube and extending the operating life of the lamp. The spring-mounted construction enables the lamp to withstand mechanical shock and vibration.

Abstract: An electric field producing structure especially suitable as electron or field forming sources in vacuum devices is disclosed herein along with its method of manufacture. The structure so disclosed includes upper and lower, generally planar electrodes spaced apart in parallel confronting relationship to one another with a dielectric layer therebetween so as to electrically insulate the electrodes from one another. A series of apertures are formed with the upper electrode and the dielectric layer. Each aperture is deeper than it is wide and contains a single electrically conductive protuberance extending up from the lower electrode. Each protuberance is formed in at least two stages by successive physical evaporative deposition processes so that the uppermost tip of each protuberance in its associated aperture is substantially coplanar with the upper electrode.

Abstract: A dispenser cathode for a gas filled tube is fabricated from a porous metal material impregnated with an electron emitting material and has on an emitting surface at least one geometric aperture of a given depth and width and having steep vertical walls which serve to compensate for the deleterious effects of ion back bombardment.

Abstract: A discharge lamp has a lamp assembly including a discharge lamp unit with a pair of lamp leads extending therefrom, and a base assembly including a pair of base leads electrically connected to the pair of lamp leads and mechanically supporting the lamp unit in position with respect to the base assembly. The base assembly comprises a hollow base structure of electrically insulating material molded in one piece with a partition dividing the interior thereof into a pair of completely isolated spaces. Electrically connected to the base leads, a pair of sheet metal conductors are received with clearances in the respective isolated spaces in order to preclude the possibility of an electric discharge taking place between the pair of conductors within the base structure.

Abstract: A directly-heated cathode structure for use in a compact cathode ray tube comprises an insulating support body, a pair of cathode lead pins fixedly carried in the insulating support body, and a filament extending between the leading ends of said cathode lead pins. An electron emitting material is applied to and coated on the filament over its entire length including its two ends joining with the leading ends of the cathode lead pins so that the electron emitting material once hardened ensures that the two ends of the filament are firmly fixed to the leading ends of the cathode lead pins. The insulating support body may have a groove which is formed across the upper face thereof and within which the leading ends of the cathode lead pins are exposed in a spaced relation, which helps confining undesirable scattering of the electron emitting material when sprayed to the filament.

Abstract: A locking device on doors is provided with inner and outer escutcheons (2, 3) and having a lock (5) which is arranged between the two escutcheons to permit actuation from the inside and outside. In order to obtain a substantial advantage by remote inquiry of the locking condition and/or storage of locking conditions which have taken place, the locking device has a simple construction, including at least one switch disk (19, 19a) which is entrained upon the actuation of the lock and contact or switch (S1, S2) associated with the switch disk in order to produce electric recording signals concerning an actuation of the lock and/or inside and outside interrogation takes place.

Abstract: A shadow mask for use in a three-gun color picture tube comprising a number of electron beam transmission holes, the length of the bridge portion between two vertically adjacent ones of said electron beam transmission holes being constant, the vertical pitch of said electron beam transmission holes being varied between Py+.DELTA.x and Py-.DELTA.x so as to reduce moire effect, .DELTA.x being obtained from the following formula when n=3, 4: ##EQU1## wherein Py is the vertical pitch of the electron beam transmission holes of a shadow mask, Ps the pitch of scanning lines, fa the pitch frequency of the shadow mask, and fs the scanning frequency.

Abstract: A ballastless high pressure discharge lamp includes an arc tube, electrodes disposed in the arc tube, a column of mercury disposed in the arc tube and having a volume less than the volume of the arc tube, and cushion material disposed in the arc tube adjacent at least one of the electrodes. The cushion material comprises an inert gas impinging upon at least one end of the column of mercury. At least one of the electrodes extends into the column of mercury. The discharge lamp also includes a heating member disposed adjacent the arc tube to separate the column of mercury into two sub-columns by the vaporization of a portion of the mercury column to thereby form a space between the two sub-columns and compress the cushion material and allow one of the mercury sub-columns to engage one of the electrodes whereby to form an arc in the space between the two sub-columns of mercury.

Abstract: A paging receiver includes a receiver main body and a card-like ROM. The receiver main body includes a receiver circuit for receiving a paging signal, reception controllers for ON/OFF-containing the receiving circuit on the basis of reception control data, address comparators for checking whether a calling signal received in accordance with a reception control signal is assigned to the receiver, a CPU for fetching a message following the calling signal determined to be assigned to the receiver by the address comparators, a message memory for storing a received message, and a display for displaying the message stored in the message memory. The card-like ROM is detachably mounted in the receiver main body, stores at least a part of the reception control data, and supplies the reception control data stored therein to at least one of the reception controller and the address comparator while it is mounted in the receiver main body.

Abstract: An electroluminescent panel lamp being of either a split-electrode or parallel plate type is disclosed wherein the lamp consists of a main body having an electroluminescent layer between first and second conductive layers. An integral electrical connector tab is formed from the materials of the main body. In the parallel plate embodiment the first conductive element is exposed so as to form a front electrode, the rear electrode being the second conductive layer. In the split-electrode embodiment, the second conductive layer on the main body and connector tab is split into two halves, the two halves on the tab being the electrical connections and lying in the same plane. An alternating current charge applied to one half of the split second conductor will capacitively couple it to the other half through the unconnected first conductor. A universal connector that can connect an electrical power source to either the parallel plate or split-electrode embodiment is also disclosed.

Abstract: An electron beam generator which can operate in pulse or continuous mode, has an electron beam which is emitted in a main electron gun including a thermionic cathode and an anode. Used in association with this main electron gun is an auxiliary electron gun including a cathode, a grid intended to modulate an auxiliary electron beam in pulses when it is operating in pulse mode or to adjust the current of the auxiliary electron beam when it is operating in continuous mode, and an anode. The anode is in thermal and electric contact with the cathode of the main electron gun. The auxiliary electron beam controls the emission from the cathode. The electron beam emitted by the main electron gun is not disturbed by crossing the grid. Application of the electron beam generator is notably to microwave longitudinal interaction tubes operating at high average and/or peak power.

Abstract: Low-pressure mercury vapor discharge lamp in which the envelope (1) is provided on its inside with a luminescent layer (5), which comprises green luminescing Zn.sub.2 SiO.sub.4 :Mn.sup.2+ (willemite), while between the luminescent layer (5) and the envelope (1) a luminescent intermediate layer (6) is present, which comprises luminescent Sr.sub.4 Al.sub.14 O.sub.24 : Eu.sup.2+, in which the Sr may be replaced for up to 25 mol. % by Ca.