Abstract: A phosphor layer is formed efficiently in a gas discharge tube by drawing a mother material to fabricate a supporting member which is insertable in a small glass tube used for a gas discharge tube, forming a phosphor layer on the supporting member, and inserting and placing the supporting member in the small glass tube.

Abstract: A gas discharge tube includes a plurality of light-emitting portions that are provided outside of the tube, at least two discharge electrodes, and an electron emission film formed on the entire inner wall of the tube for improving discharge characteristics.

Abstract: A display device includes a plurality of emitting tubes constituted by elongated tubes each having a phosphor layer disposed and a discharge gas enclosed inside, a supporter for supporting the plurality of emitting tubes while making contact therewith, and a plurality of electrodes disposed on a surface of the supporter facing the emitting tubes for generation of electric discharges within the emitting tubes. The supporter has a connecting portion at an edge. The connecting portion of the supporter is detachably connected to a connector for applying a voltage to the plurality of electrodes.

Abstract: A display device includes elongated display tubes each of which has a discharge gas filled and a phosphor layer formed in the tube; a flexible sheet; a plurality of electrodes; and an adhesive layer. Each of the tubes is flat elliptical in cross section and has a plane section. The flexible sheet abuts against the plane sections of the tubes to support the tubes. The plurality of electrodes are arranged on the tubes abutting surface of the flexible sheet, for applying a voltage to the tubes to generate discharges within the tubes. The adhesive layer is disposed on the tubes abutting surface of the flexible sheet to bond the flexible sheet to the plane sections of the tubes so that the electrodes of the flexible sheet face the plane sections when the flexible sheet abuts against the plane sections of the tubes.

Abstract: A method for forming a coating film on an internal surface of an elongated tube, includes longitudinally holding the elongated tube, applying a coating solution to the internal surface of the elongated tube; and drying the coating solution while carrying out a heat process for sequentially heating the elongated tube by using a heat source. The heat process includes adjusting the descending rate of the heat source so that a through-hole in the elongated tube is clogged with the coating solution whose viscosity is reduced by heating of the heat source, and sucking the through-hole in the elongated tube from the lower side thereof so that a portion of the through-hole that is clogged with the coating solution moves downwards along the elongated tube.

Abstract: A method for forming a coating film on an internal surface of an elongated tube, includes longitudinally holding the elongated tube, applying a coating solution to the internal surface of the elongated tube; and drying the coating solution while carrying out a heat process for sequentially heating the elongated tube by using a heat source. The heat process includes adjusting the descending rate of the heat source so that a through-hole in the elongated tube is clogged with the coating solution whose viscosity is reduced by heating of the heat source, and sucking the through-hole in the elongated tube from the lower side thereof so that a portion of the through-hole that is clogged with the coating solution moves downwards along the elongated tube.

Abstract: A gas-discharge tube has a glass tube as its main body and a trench is provided in the axial direction of the glass tube on one surface (the surface opposed to the discharge surface) among the external surfaces of the glass tube. An address electrode is placed in the trench. The inner surface of the region of the glass tube where sustain electrodes are placed is formed to have a microscopic unevenness. A secondary electron emission film is formed on this inner surface where the unevenness is formed. In addition, a phosphor support member, whose cross section across the axis is in approximately a C-shape and where a phosphor layer has been formed in advance on the inner surface, is placed inside of the glass tube. Stable discharge characteristics is obtained by eliminating dispersion of the position of an electrode, relative to the gas-discharge tube.

Abstract: A method of forming a phosphor layer of a gas discharge tube provided with the phosphor layer on an internal surface of an elongated tubular vessel forming a discharge space. The method includes the steps of introducing a slurry of phosphor powder and a binding resin dispersed in a medium into the tubular vessel, holding the tubular vessel sideways to deposit the phosphor powder and the binding resin in the tubular vessel, and removing the medium from the tubular vessel, thereby forming a phosphor layer on one side of the internal surface of the tubular vessel.

Abstract: A display device includes a plurality of light-emitting tubes arranged in parallel consisting of narrow tubes having a plurality of light-emitting points formed in a longitudinal direction thereof, a phosphor layer provided to the inside of each of the narrow tubes, and a discharge gas sealed into each of the narrow tubes. The plurality of light-emitting tubes are arranged in accordance with their property previously measured.

Abstract: A display tube is provided that can improve light emission efficiency without raising a breakdown voltage. The display tube has a tubular vessel defining a discharge gas space and a pair of display electrodes for generating surface discharge along the circumferential surface of the vessel and opposing discharge traversing the inside of the vessel.

Abstract: A gas discharge tube having a phosphor layer formed within a tubular vessel defining a discharge space. The gas discharge tube includes a supporting member independent of the tubular vessel. The phosphor layer is formed on the supporting member. The supporting member is inserted within the discharge space.

Abstract: A plasma display panel in which projections are formed in grooves between partitions and phosphor layers are provided on the projections so as to increase the area where phosphor adheres and thereby to increase the luminance. A couple of substrates are opposed to each other to form a discharge space. Band-like partitions partitioning the discharge space are arranged on the back or front substrate. Wall-like projections lower than the partitions and high enough to increase the area where phosphor layers are formed are provided in the region where the discharge space is formed in the long grooves between the partitions or around the discharge space. Phosphor layers are formed in the grooves between the partitions including the wall-like projections. A method for producing such a plasma display panel is also disclosed.

Abstract: A light-emitting tube array display device includes a light-emitting tube array, a flexible sheet and a plurality of electrodes. The light-emitting tube array is constituted of a plurality of light-emitting tubes arranged in parallel. Each of the light-emitting tubes consists of narrow tube having a phosphor layer disposed and discharge gas filled inside. The flexible sheet is capable of flatly supporting the light-emitting tube array and deforming the light emitting tube array in a direction perpendicular to a longitudinal direction of the light-emitting tubes. The plurality of electrodes are formed on a face of the flexible sheet opposed to the light-emitting tubes, which are capable of generating discharge inside the light-emitting tubes by an application of voltage. Each of the electrodes is formed of a metal film having a mesh pattern, a ladder pattern, or a comb-shape pattern.

Abstract: A phosphor layer is formed efficiently in a gas discharge tube by drawing a mother material to fabricate a supporting member which is insertable in a small glass tube used for a gas discharge tube, forming a phosphor layer on the supporting member, and inserting and placing the supporting member in the small glass tube.

Abstract: A light-emitting tube array display device includes a light-emitting tube array constituted of a plurality of light-emitting tubes arranged in parallel with discharge gas filled therein, a light-transmitting supporter abutting the display surface side of the light-emitting tube array for supporting the light-emitting tube array and having electrodes formed on its surface facing the light-emitting tube array for applying a voltage to the light-emitting tubes, and a light-transmitting adhesive layer formed between the supporter and the light-emitting tube array. The adhesive layer has a refractive index equal to or higher than that of a tube body of the light-emitting tube and the supporter has a refractive index equal to or higher than that of the adhesive layer.

Abstract: A plasma display panel and method of producing same, in which projections are formed in grooves between partitions and phosphor layers are provided on the projections so as to increase the area where phosphor adheres and thereby to increase the luminance. A pair of substrates, opposed to each other, form a discharge space. Band-like partitions partitioning the discharge space are arranged on one of the back and front substrates. Wall-like projections, lower than the partitions but high enough to increase the area where phosphor layers are formed, are provided in the region where the discharge space is formed in the long grooves between the partitions or around the discharge space. Phosphor layers are formed in the grooves between the partitions including the wall-like projections.

Abstract: According to the present invention, there is provided a method for forming a metal oxide film comprising, when a metal oxide film is formed by conducting a thermal treatment on a coating film containing an organic metal compound formed on an inner wall of a tube, performing an ultraviolet irradiation treatment or an ozone treatment on the coating film prior to or simultaneously with the thermal treatment.

Abstract: An AC-type gas discharge display includes a base, discharge tubes which are arranged on the base in parallel to each other and which contain fluorescent phosphors, data electrodes formed on the external surfaces of the discharge tubes such that the data electrodes extend in the longitudinal direction of the discharge tubes, and display electrodes formed in pairs on the external surfaces of the discharge tubes at the opposite side of the data electrodes such that the display electrodes intersect the discharge tubes. Each of the discharge tubes has a flattened elliptical shape in cross-section thereof and includes a pair of flat portions. The data electrodes are formed on one of the flat portions and scanning electrodes and common electrodes are alternately arranged on the other one of the flat portions, and the discharge tubes are supported by the base at one or the other one of the flat portions.

Abstract: A display device includes a plurality of emitting tubes constituted by elongated tubes each having a phosphor layer disposed and a discharge gas enclosed inside, a supporter for supporting the plurality of emitting tubes while making contact therewith, and a plurality of electrodes disposed on a surface of the supporter facing the emitting tubes for generation of electric discharges within the emitting tubes. The supporter has a connecting portion at an edge. The connecting portion of the supporter is detachably connected to a connector for applying a voltage to the plurality of electrodes.

Abstract: A light-emitting tube array display device includes a light-emitting tube array, a flexible sheet and a plurality of electrodes. The light-emitting tube array is constituted of a plurality of light-emitting tubes arranged in parallel. Each of the light-emitting tubes consists of narrow tube having a phosphor layer disposed and discharge gas filled inside. The flexible sheet is capable of flatly supporting the light-emitting tube array and deforming the light emitting tube array in a direction perpendicular to a longitudinal direction of the light-emitting tubes. The plurality of electrodes are formed on a face of the flexible sheet opposed to the light-emitting tubes, which are capable of generating discharge inside the light-emitting tubes by an application of voltage. Each of the electrodes is formed of a metal film having a mesh pattern, a ladder pattern, or a comb-shape pattern.