Abstract: An electron gun of a flat plate type image display apparatus for use in a field of an image information apparatus is described. A rear electrode part of the electron guns is formed by a flat plate type rear electrode which has a conductive film on its surface, and is arranged with a constant distance from the plural line electrodes. Plural spacers are disposed between the plural line electrodes (2), with one end of each fixed on the rear electrode and conductive films formed on the surfaces. The fabrication of the electron gun is simplified and furthermore, electric field is stabilized by prevention of generation of electric charge and generation of unevenness of luminance on a surface of an anode.

Abstract: A picture image display apparatus has a flat type vacuum enclosure having a transparent face panel. A row of parallelly disposed linear thermionic cathodes are provided with an electron beam extractor electrode which produces a predetermined number of two dimensionally disposed electron beams out of the electron emission from the linear thermionic cathodes. A row of control electrodes is disposed parallelly in a direction perpendicular to those of the linear thermionic cathodes. A row of vertical deflection electrodes and a row of horizontal deflection electrodes are provided. A phosphor screen formed on the inner force of the face panel has an anode of thin metal film formed on its surface. A horizontal deflection signal generator issues a horizontal deflection signal having, in 1 cycle, a first scanning period wherein voltage increases and a second scanning period of the same length wherein voltage decreases.

Abstract: In making electrode construction for multiple cathode type flat cathode ray tube, a plural number of parallel strip electrodes are connected to form one sheet by means of connecting means 21, 21 . . . provided between neighboring strips. The connecting means are ribs extending laterally (i.e., in a direction of right angle to said strips from the strip electrodes 33, 33 . . . or 36, 36 . . . . The composite parallel strips formed by connecting by the connecting means are formed by photolithographic process from an Ni-Cr-Fe sheet. The connecting means are cut out by impingement of high energy beams (of laser or electron) after bonding the composite parallel strips onto another higher rigidity electrode member.

Abstract: In a multiple electron beam type flat picture image display apparatus, the disposition of the electrode is improved to the following order:linear cathode 14, first deflection electrodes 17 for vertical deflection, control electrodes 23 for control of electron beam density, second deflection electrodes 26 for horizontal deflection, acceleration electrodes 28 and an anode 31 of thin metal film formed on the back face (on the inner face) of phosphor screen 30.Thus, by isolating the vertical deflection electrodes 17 and the horizontal deflection electrode by the control electrodes 23 disposed in between, and by disposing acceleration electrodes 28 at the final stage of electron beam paths, the distortion of image and smallness of spots are improved and vertical deflection energy becomes smaller.

Abstract: The picture image display apparatus in accordance with the present invention comprises:a flat type vacuum enclosure having a transparent face panel,a row of parallelly disposed linear thermionic cathodes,electron beam forming electrode which produces a predetermined number of two dimensionally disposed electron beams out of the electron emission from said linear thermionic cathodes,a row of control electrodes disposed parallelly in a direction perpendicular to those of said linear thermionic cathodes,a row of deflection electrodes,a phosphor screen formed on the inner face of said face panel, andan anode of thin metal film formed on said surface of said phosphor screen,wherein the improvement is thata row of deflection-aiding electrodes is disposed between said row of deflection electrode and said anode, said post deflection electrodes being impressed with substantially constant positive potential with respect to said linear thermionic cathodes.

Abstract: The picture image display apparatus in accordance with the present invention comprises:a flat type vacuum enclosure having a transparent face panel,an electron beam emitter which emits a predetermined number of electron beams disposed in a row in selected positions,a row of control electrodes to control intensities of said electron beams,a row of parallel deflection electrodes, every other one of them being first electrodes commonly connected each other, the other ones of them being second electrodes commonly connected to each other,a phosphor screen formed on the inner face of said face panel and,an anode of thin metal film formed on said surface of said phosphor screen,wherein the apparatus is characterized in thatevery gap defined by one of said first electrodes and one of said second electrode neighboring thereto form deflection electric fields of opposite directions to each other, and said gaps are disposed in a manner that said electron beams simultaneously pass through every said deflection gap.

Abstract: A picture display device comprising an electron source for producing band-shaped electron beams, electron beam control means for controlling the selective passage of the electron beams, deflection means for horizontally and vertically deflecting the electron beams and display means for emitting light in response to impingement of the electron beams thereon. The electron source comprises a plurality of linear thermionic cathodes, a focusing electrode for focusing the electron beams emitted from each linear thermionic cathode to band-shaped electron beams and an electron beam emitting electrode having a plurality of apertures therethrough, and a negative pulse voltage is sequentially applied to the linear thermionic cathodes to emit the required electron beams for one scanning line.

Abstract: A picture display device comprising an electron source for producing band-shaped electron beams, electron beam control means for controlling the selective passage of the electron beams, deflection means for horizontally and vertically deflecting the electron beams and display means for emitting light in response to impingement of the electron beams thereon. The electron source comprises a plurality of linear thermionic cathodes, a focusing electrode for focusing the electron beams emitted from each linear thermionic cathode to band-shaped electron beams and an electron beam emitting electrode having a plurality of apertures therethrough, and a negative pulse voltage is sequentially applied to the linear thermionic cathodes to emit the required electron beams for one scanning line.