Abstract: A gap defined between cathode wires 2 having electron emitting sources 2a and control electrodes 4 is made uniform and a thickness of an insulation layer 3 interposed between both of them is made thin or the insulation layer 3 is eliminated whereby the electron emission characteristics and the high-frequency driving of high performance can be realized. The control electrodes 4 which have recessed portions 4c in plate-like members and have holes 4a for allowing electrons to pass therethrough in bottom portions thereof restrict the gap defined between the cathode wires 2 and the control electrodes 4 by adjusting a plate-thickness direction size of the holes 4a formed in the control electrodes 4.

Abstract: A display device can realize the highly efficient electron emission characteristics by ensuring the exposure of carbon nanotubes 13 in the inside of a vacuum by fixing the carbon nanotubes 13 to cathode wires 12 such that the carbon nanotubes 13 are not easily removed from the cathode wires 12 with the small resistance which enables the carbon nanotubes 13 to have the enough electron emission ability. Some end portions or some intermediate portions of the carbon nanotubes 13 are embedded into the cathode wires 12 formed on a rear substrate 11 and, at the same time, contact points where the carbon nanotubes 13 cross each other or portions in the vicinity of the crossing portions are bonded to each other by bonding films 14.

Abstract: A field emission type display device adopts the structure in which one pixel is constituted of a combination of a plurality of small apertures and a plurality of small electron sources. Due to such a constitution, it is possible to reduce undesired electrons to control electrodes and to enhance of the heat resistance of the carbon nanotubes of electron sources, whereby it is possible to obtain a display device of high quality and long lifetime exhibiting the high-performance electron emission characteristic. Boron (B) is adhered to carbon nanotubes which constitute electron sources through the small apertures of the control electrodes and hence, the alignment of the small apertures and the small electron sources is ensured and the area of the electron source is set equal to or less than the area of the aperture.

Abstract: To provide a display device having the long lifetime and the high reliability by preventing the generation of a spark or a dark current between terminals of cathode lines and an anode, a shielding member is arranged between the terminals of the cathode lines and the anode so as to ensure shielding between the terminals and the anode.

Abstract: The present invention can suppress rupture of distance holding members, a back substrate or a front substrate attributed to atmospheric pressure. In a display device of the present invention, between the back substrate having cathode lines and plate-member control electrodes and the front substrate, a large number of distance holding members which hold a distance between the substrates are mounted in an erected manner. At portions where the distance holding members are brought into contact with the back substrate and/or the front substrate, a buffering/fixing material which is constituted of a buffering material having high resiliency and an adhesive is interposed for dispersing the atmospheric pressure applied from the back substrate and the front substrate substantially uniformly. Further, the distance holding members are fixed between the back substrate and the front substrate by a heat treatment and pressurizing step.

Abstract: 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 an area of the cathode portions which form an electron source is formed in a wide island shape.

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: 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: In a display device, a distance (a gap) between cathode lines (electron sources) and control electrodes is made uniform and a stray discharge attributed to the electron sources attached to the cathode lines which are exposed through between the neighboring plate-like control electrodes can be prevented. A display device comprises a back panel and a front panel on an inner surface of a back substrate. The back panel includes a plurality of cathode lines which have electron sources on an inner surface of the back panel and extend in parallel to each other, and a plurality of plate-like control electrodes which have electron passing holes which allow electrons emitted from the electron sources to pass therethrough to a front panel side, cross the cathode lines in a non-contact manner and are formed in parallel to each other. The front panel includes anodes and phosphors formed on an inner surface of a front substrate which faces the back substrate.

Abstract: The present invention provides a display device which can maintain a gap between a front surface panel 1 and a back surface panel 2 at a given value and maintain the air-tightness of a sealed space defined between the front surface panel 1 and the back surface panel 2 even when the gap is relatively large. To achieve such an object, the display device includes the back surface panel 1, the front surface panel 2 and the outer frame 3, the outer frame 3 is constituted of a plurality of divided wall members 3X1, 3X2, 3Y1, 3Y2 and 3C1 to 3C4. Further, at least at some portions where neighboring wall members are engaged with each other, oblique surfaces 3P are formed and a crossing angle which is made by a normal line of the oblique surfaces 3P and a normal line of the back surface panel 1 or the front surface panel 2 is set to an acute angle.

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: A display device can realize the highly efficient electron emission characteristics by ensuring the exposure of carbon nanotubes 13 in the inside of a vacuum by fixing the carbon nanotubes 13 to cathode wires 12 such that the carbon nanotubes 13 are not easily removed from the cathode wires 12 with the small resistance which enables the carbon nanotubes 13 to have the enough electron emission ability. Some end portions or some intermediate portions of the carbon nanotubes 13 are embedded into the cathode wires 12 formed on a rear substrate 11 and, at the same time, contact points where the carbon nanotubes 13 cross each other or portions in the vicinity of the crossing portions are bonded to each other by bonding films 14.

Abstract: A gap defined between cathode wires 2 having electron emitting sources 2a and control electrodes 4 is made uniform and a thickness of an insulation layer 3 interposed between both of them is made thin or the insulation layer 3 is eliminated whereby the electron emission characteristics and the high-frequency driving of high performance can be realized. The control electrodes 4 which have recessed portions 4c in plate-like members and have holes 4a for allowing electrons to pass therethrough in bottom portions thereof restrict the gap defined between the cathode wires 2 and the control electrodes 4 by adjusting a plate-thickness direction size of the holes 4a formed in the control electrodes 4.

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 provides a display device which can maintain a gap between a front surface panel 1 and a back surface panel 2 at a given value and maintain the air-tightness of a sealed space defined between the front surface panel 1 and the back surface panel 2 even when the gap is relatively large. To achieve such an object, the display device includes the back surface panel 1, the front surface panel 2 and the outer frame 3, the outer frame 3 is constituted of a plurality of divided wall members 3X1, 3X2, 3Y1, 3Y2 and 3C1 to 3C4. Further, at least at some portions where neighboring wall members are engaged with each other, oblique surfaces 3P are formed and a crossing angle which is made by a normal line of the oblique surfaces 3P and a normal line of the back surface panel 1 or the front surface panel 2 is set to an acute angle.