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, the distance between the electron passing apertures formed in the strip-like electrode elements which constitute the control electrodes as db(mm), the distance between the electron source and the strip-like electrode element as Lkg(mm), and an aperture diameter of the electron passing apertures as ?G(mm), provided that the aperture diameter ?G(mm) is expressed by the following formula (45), D 3 · Nh 2 + Nv 2 - 2 ? db > ( - 0.23 · ln ? ( db ) + 0.49 ) · Lkg + 0.02 · ln ? ( db ) + 0.125 ( 45 ) the following formula (46) is established. (0.46·ln(db)+2.5)·Lkg+0.006·ln(db)+0.04??G?(?0.41·ln(db)?0.68)·Lkg+0.014·ln(db)+0.

Abstract: An image display device includes a rear substrate having electron sources, a front substrate having phosphor layers and an anode, and an exhaust tubulation disposed to communicate with a through hole provided in the rear substrate. The image display device is provided with an anode terminal which is embedded in the front substrate with a portion of the anode terminal exposed on an inner surface of the front substrate, and which is electrically coupled to the anode. The image display device is provided with an anode lead-out wire, one end of the anode lead-out wire is coupled to the anode terminal, and another end of the anode lead-out wire is passed through the through hole, and is hermetically sealed with the exhaust tubulation.

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 space. 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 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: By forming chamfered portions on corner portions of a spacer, a contact area between the spacer and a fixing material is enlarged. Side surfaces of the spacer including the chamfered portions are embedded into the inside of the fixing material and hence, an adhesion area of the spacer with the fixing material is enlarged thus enhancing an adhesion strength. As a result, a fixing strength of the spacers which hold a space between a back panel and a face panel in vacuum is enhanced.

Abstract: An image display device has a front substrate having an anode and phosphors, a rear substrate having electron sources and opposing the front substrate with a specified spacing therebetween, a support member which is sandwiched between the front and rear substrates, surrounds a display region, and maintains the specified spacing, and plural spacing-maintaining members which are sandwiched between the front and rear substrates in the display region, and are fixed at at least one of end faces of each of the spacing-maintaining members to a corresponding one of the front and rear substrates. Both end faces of the support member is hermetically sealed to the rear and front substrates, respectively. A height of the spacing-maintaining members is greater than that of the support member.

Abstract: A display device includes a back substrate having a plurality of cathode lines, and a plurality of control electrodes, which are insulated from the cathode lines on an inner surface thereof, and a front substrate which is arranged to face the back substrate in an opposed manner with a set distance therebetween, and which has phosphors and an anode which constitute a display region, on an inner surface thereof. Distance holding members are provided for maintaining the set distance between the back substrate and the front substrate inside of the display region. The phosphors are constituted of three colors, and the cathode lines are formed into groups each consisting of three cathode lines corresponding to the three colors. The plurality of cathode lines include line portions and cathode portions which are wider than the line portions. Electron sources are formed on the cathode portions.

Abstract: An image display device according to the present invention includes a front-surface panel SUB2, a rear-surface panel SUB1, and an outer frame FR. Here, the front-surface panel SUB2, the rear-surface panel SUB1, and the outer frame FR are fixed to each other by frit glass FT. Also, an internal hermetically-closed space surrounded by the front-surface panel SUB2, the rear-surface panel SUB1, and the outer frame FR is maintained at a lower pressure than that of the outside. Moreover, the outer frame FR is formed of a sintered body of glass paste.

Abstract: To allow an image display device which includes a plurality of distance holding members (spacers) which are arranged in the inside of a display region to acquire a prolonged lifetime, high brightness and high reliability while preventing charging of the spacers, a conductive film is arranged on a bottom surface of the spacer and the conductive film is covered with an adhesive material.

Abstract: The present invention provides a display device which can sufficiently ensure spaces for mounting distance holding members 5 when the distance holding members 5 are mounted, can facilitate the assembling and can realize the electron emission characteristics of high performance. At least two different types of gaps b, c (b<c) are provided among cathode lines 2 (2R, 2G, 2B) and the distance holding members 5 are mounted at portions of the gaps c having a larger size whereby the space for mounting the distance holding members 5 can be sufficiently ensured.

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: 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: 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.