Abstract: On a back surface of a back substrate on which electron emission sources are formed, a getter room is formed by the back substrate and a cup-shaped room member. In the inside of the getter room, a getter assembly which includes a getter housing which holds a getter and a getter support which supports the getter housing is arranged. End portions of the getter support are fixed to and arranged between the back substrate and the room member by a sealing material. The present invention provides an image display device which prevents the occurrence of cracks in the getter room thus suppressing the degradation of a display characteristic of the image display device.

Abstract: In a display device, to ensure sufficient electron source regions on cathode lines formed on a back substrate, cathode lines are divided into line portions and cathode portions, wherein the line portions are made narrow to a width which is a required minimum for transmitting signals, and the area of the cathode portions which form an electron source has a wide island shape. Further, a plurality of cathode lines are formed into groups, and respective cathode portions are formed at positions corresponding to electron passing apertures formed in the control electrodes. Also, the gap between the wiring portions is made small, so that a relatively large space is ensured between neighboring groups of the cathode lines. Thus, the tolerance in mounting the control electrodes and the tolerance in mounting the distance holding members can be increased, whereby the alignment between electron passing apertures and cathode lines is facilitated.

Abstract: The present invention provides an image display device which can realize the recycling at a low cost by shortening a disassembling time of a face substrate and a back substrate. In a support frame which is bonded and fixed to a face substrate and a back substrate by way of sealing materials respectively, a cut portion whose spatial region expands from the inside to the outside is integrally formed on an end surface at a corner portion thereof. To outer portions of the cut portions, the sealing materials 10a, 10b are not fixed.

Abstract: The present invention suppresses the generation of deterioration of degree of vacuum attributed to a chemical reaction between an insulation film and an adhesive agent for adhering a sealing frame. An insulation film formed between first electrodes and first electrode lead terminals and second electrodes and second electrode lead terminals on a back panel is formed except for a sealing region where the back panel and a face panel are sealed. In a second electrode lead terminal side of the sealing region, only an adhesive-agent layer which adheres the back panel and the sealing frame and the second electrode lead terminals are present between a sealing frame and a back substrate.

Abstract: An image display device includes a front substrate having anodes and phosphors, a rear substrate having plural video signal wirings and plural electron sources each formed on a corresponding one of the video signal wirings, and disposed to face the front substrate with a predetermined spacing between the front and rear substrates and a support member which is sandwiched between the front and rear substrates, surrounds a display area formed therebetween and maintains the predetermined spacing. The support member is includes long-side portions of a uniform width disposed on long sides of the front substrate and short-side portions of a uniform width disposed on short sides of the front substrate. At least the long-side portions are curved convexly toward an outside of the display area.

Abstract: A cold cathode display device includes a plurality of spacers in a space defined between a face substrate and a back substrate. The spacers are held by two fixing means consisting of fixing by fusion of a fixing material and fixing by dissolution of the fixing material. The invention provides an image display device which can realize the large-sizing of display size, the high-quality display and the prolonged lifetime by preventing the inclination and the removal of the spacers thus assuring the fixing strength and ensuring the parallelism and the panel strength of both substrates.

Abstract: A display device includes a front substrate having an anode and fluorescent materials on an inner surface, and a back substrate having a plurality of cathode lines and include electron sources, and a plurality of control electrodes allow electrons from the electron sources to emit to the front substrate side, on an inner surface thereof. The back substrate is arranged to face the front substrate in an opposed manner with a given gap therebetween, and an outer frame for holding the given gap is interposed between the front substrate and the back substrate and extends around the display region. An inner frame is arranged outside the display region and inside the outer frame, and a getter is provided between the outer frame and the inner frame.

Abstract: The present invention eliminates the influence attributed to a residue of an electrode forming material which is generated in a recessed portion formed in an inner surface of a back substrate thus preventing the generation of sparks whereby an image display device which possess a long lifetime and can exhibit a high-quality display can be realized. A non-displayed island-like electrode which is held at a given potential is arranged in a state that the island-like electrode surrounds a recessed portion of an opening of a through hole which is provided on an inner surface side of the back substrate.

Abstract: A plurality of spacers are arranged between a face substrate and a back substrate of a planar image display device and both ends of each spacer are respectively fixed to the face substrate and the back substrate using a fixing material which contains a conductive component and 10 to 90 wt % of vitrifying component. Due to such a constitution, the display device can ensure the parallelism of both substrates and a panel strength by ensuring a fixing strength and conductive properties of the spacers. Accordingly, the display device can realize the large-sizing of a display size and the high-quality display. The display device also can prolong the lifetime.

Abstract: Inside an outer frame, which is interposed at between opposedly facing peripheries between a back substrate and a front substrate, there is an inner frame which fixes both end portions of plate member control electrodes, which are constituted of a large number of parallel strip-like electrode elements. By integrally forming the plate member control electrodes such that the plate member control electrodes are fixed to both end portions of a display region, a single part is formed. Further, a getter chamber is formed between the outer frame and the inner frame and getters are accommodated in the getter chamber. Due to such a constitution, the operability and yield rate of products at the time of assembling can be enhanced. Further, it is possible to hold a desired degree of vacuum in the space between the substrates for a long time.

Abstract: An image display device is constructed to prevent warping of a face substrate and a back substrate, can ensure the hermetic bonding of a support body, which is interposed between both substrates and is constituted of a combined body formed of a plurality of members, can easily from a large screen of the display device, and can enhance a hermetic property maintaining function. For this purpose, the support body, which is interposed between the face substrate and the back substrate and surrounds a display region, is formed of a projected parallel assembled body formed by combining a plurality of rod-like members having joining portions that cross each other at an approximately right angle. Projecting portions, which are constituted of distal end portions of the rod-like members, extend outwardly and are provided on a side of the support body outside of the display region.

Abstract: The present invention provides an image display device in which it is possible to obtain an image display of high brightness and high contrast by preventing the halation which may be generated in a peripheral portion of a display image. By providing a carbon film which attenuates the reentry of secondary electrons, which are generated when electron beams impinge on an anode, to a back surface of the anode, even when primary electrons impinge on the anode, the secondary electrons are hardly emitted from the anode. At the same time, a trace amount of emitted secondary electrons are mainly formed of electrons having a small energy. Hence, these emitted secondary electrons are scattered and hardly reenter the anode.

Abstract: A highly reliable display device is provided, in which a high quality display is possible and in which there is no fear of damage to a substrate, and the like by setting the buckling strength and the number of spacing retaining members (spacers) disposed in a display region. A self-sustainable spacer assembly is constituted by combining plural spacers; and, by dispersion-disposing the spacer assemblies in a display region, the spacing between both substrates is kept constant.

Abstract: A gap formed between cathode wires 2 (electron emitting sources 2a) and control electrodes 4 is made uniform and a gap formed between a rear panel 100 and a face panel 200 is held at a predetermined value with high accuracy. Plate-like members are used as the control electrodes 4. Holes 4a which allow electrons emitted from the electron emitting sources 2a provided to the cathode wires 2 to pass through the control electrodes 4 toward the face panel 200 side are formed in pixel regions which are defined by the cathode wires 2 and the control electrodes 4 crossing the cathode wires 2 both of which are formed on the rear panel 100. Contact portions 10 which are projected toward the rear panel 100 side and support the control electrodes 4 are provided between the neighboring cathode wires 2. Further, gap holding members 9 which hold the gap between the face panel 200 and the rear panel 100 at the predetermined value are provided right above the contact portions 10 and at the face panel 200 side.

Abstract: The present invention ensures the hermetic bonding of a support body which is interposed between a face substrate and a back substrate and is formed of a plurality of members thus easily realizing the large-sizing of a screen of a display image and, at the same time, enhancing a hermetic property holding function of the image display device. A support body is interposed between a face substrate and a back substrate while surrounding a display region and hermetically seals both substrates using a sealing material. The support body is formed by hermetically bonding a plurality of support body members each other using a bonding material which has a softening point higher than a softening point of the sealing material.

Abstract: Inside an outer frame, which is interposed at between opposedly facing peripheries between a back substrate and a front substrate, there is an inner frame which fixes both end portions of plate member control electrodes, which are constituted of a large number of parallel strip-like electrode elements. By integrally forming the plate member control electrodes such that the plate member control electrodes are fixed to both end portions of a display region, a single part is formed. Further, a getter chamber is formed between the outer frame and the inner frame and getters are accommodated in the getter chamber. Due to such a constitution, the operability and yield rate of products at the time of assembling can be enhanced. Further, it is possible to hold a desired degree of vacuum in the space between the substrates for a long time.

Abstract: To obtain a paste for electron sources which can enhance heat resistance of carbon nanotubes, which can suppress burn-out of the carbon nanotubes even during heating at a high temperature, and can exhibit a high electron emission performance, boron (B) is added to the paste formed of the carbon nanotubes and metal. Due to the addition of boron, the oxidation of the carbon nanotubes can be suppressed, and the degradation of the electron emission characteristics and the degradation of the uniformity of the emission of electrons during the heating process such as baking can be prevented.

Abstract: A display device of the present invention reduces the occurrence of cracks and breaking of plate-like control electrodes, enhances the operability of assembling and suppresses the reduction of a yield factor of products. The display device includes a back substrate which has a plurality of cathode lines which extend in one direction, are arranged in parallel in another direction which crosses one direction and include electron sources respectively, and a plurality of control electrodes which cross the cathode lines in a non-contact manner within a display region, extend in another direction and are arranged in parallel in one direction on an inner surface thereof, and a front substrate which has anodes and phosphors on an inner surface thereof and faces the back substrate with a given distance therebetween. The control electrodes are formed of plate-like control electrodes.

Abstract: In a display device which includes a back substrate, a face substrate, a support body which is interposed between both substrates and surrounds a display region, thus forming an inner space, and a sealing material is provided which hermetically seals the support body and both substrates, thereby to provide a display device having a long lifetime and in which the desired degree of vacuum can be ensured in the inner spaces. A partition wall body is arranged substantially in parallel at the outside of the display region and at the inside of the support body, and getters are arranged in a space defined between the partition wall body and the support body.

Abstract: To realize a field emission type image display device which can obtain a high current density at low voltage driving, assuming a diagonal screen size of the display region as D(mm), the number of the pixels which are arranged in the x direction as Nh, the number of the pixels which are arranged in the y direction as Nv, a distance between the electron passing apertures formed in the strip-like electrode elements which constitute the control electrodes as db(mm), a distance between the electron source and the strip-like electrode element as Lkg(mm), and an aperture diameter of the electron passing apertures as &phgr;G(mm),