Abstract: The purpose of the present invention is to provide a stereo x-ray radiation device that is small and for which handling is simple. One cathode that functions as an emitter and two anodes that function as targets are disposed in a single straight-tube shaped vacuum vessel. The stereo x-ray generating device is characterized by the cathode being a cold cathode disposed in the center part of the vessel, the anodes being disposed each to one end of the vessel, and the spaces between the anodes disposed in the two ends of the vessel and the cathode being constituted such that the same can be moved closer or apart along the axial line of the vessel.

Abstract: The purpose of the present invention is to provide a stereo x-ray radiation device that is small and for which handling is simple. One cathode that functions as an emitter and two anodes that function as targets are disposed in a single straight-tube shaped vacuum vessel. The stereo x-ray generating device is characterized by the cathode being a cold cathode disposed in the center part of the vessel, the anodes being disposed each to one end of the vessel, and the spaces between the anodes disposed in the two ends of the vessel and the cathode being constituted such that the same can be moved closer or apart along the axial line of the vessel.

Abstract: Provided is a method for uniformly producing a carbon film at a low cost with low power consumption. The method for producing a carbon film, including: a step of disposing a cylindrical member having an opening in part thereof in a vacuum chamber; a step of disposing a substrate inside the cylindrical member; a step of introducing a gas for carbon film production into the vacuum chamber; and a step of applying a voltage for plasma generation to the cylindrical member to thereby generate a plasma in the cylindrical member and to produce the carbon film on the surface of the substrate by the plasma.

Abstract: In the present invention, heat dissipation is improved by extending the creepage distance in a vacuum vessel according to the size of a flange portion, without lengthening the vacuum vessel in the direction in which an electron beam is emitted. A vacuum vessel (20) in which a flange portion (20a) having a hollow portion between a cold cathode (9) and an anode (11) is formed is used. One example is a vacuum vessel (20) in which a cold cathode vessel (21) and an anode vessel (22), both cylindrically shaped, are communicated with each other and a hollow flange portion (20a) is formed between the vessels (21, 22). A focusing electrode (14) and a getter material (15), for example, are disposed in the hollow portion of the flange portion (20a). A cold cathode (9) which has a guard electrode on the outer side of the periphery of a carbon film structure (10) formed on a substrate (7) may be used. The carbon film structure (10) may be formed in the middle of an electrode surface of the substrate (7).

Abstract: The present invention provides a carbon film that is remarkably excellent in current voltage (IV) characteristics. This is achieved by way of a carbon film structure, two or more carbon film assembly units 12 are formed on a substrate 10. The carbon film assembly units 12 comprise: a stem-like carbon film 14 which is made into a film in the shape of a long and thin needle; and a branch-like carbon film cluster 16 which is made into a film so as to surround the stem-like carbon film 14 from the halfway to the lower part of this stem-like carbon film 14. The stem-like carbon film 14 has the shape of a long and thin needle having a configuration which has a spiral streak-like step part 18 towards the distal end at the circumference face of a near tip and in which the radius becomes small as going to the distal end.

Abstract: A carbon film of the present invention has an elongated needle shape whose radius decreases toward a tip. The shape is, preferably, a shape in which a field concentration coefficient ? in the Fowler-Nordheim equation is expressed by h/r where r denotes the radius in an arbitrary position and h denotes height from the arbitrary position to the tip.

Abstract: An electron emitter includes a guard electrode 13 on the outer circumferential side of a carbon film structure 10 which is formed on a substrate 7 by plasma CVD method. This guard electrode 13 includes a curved surface portion (a curved surface portion that curves from top toward a side opposite to the film-forming direction) 13a convex in a film-forming direction of the carbon film structure 10. A curvature radius R1 of an outer-circumferential-side portion of the curved surface portion 13a is larger than or equal to a curvature radius R2 of a carbon-film-structure-side portion of the curved surface portion 13a.

Abstract: Provided are an electron emitting body having a high electron beam density and an X-ray emitting device embedding the electron emitting body. The electron emitting body has a substrate, the surface of which forms a concave surface, and a carbon film comprising a large number of projections made of carbon and expanded two-dimensionally. The carbon crystal grows such that first a swell portion (22) gradually becomes larger and then a needle-like portion (23) grows from the head of the swell portion (22). The needle-like portion (23) has a graphene sheet obliquely wound therearound in a multi-layer fashion and has a hollow inside. The axis of a carbon projection (21) thus formed is substantially orthogonal to a line tangent to the concave surface (11), so that the axes of a plurality of the carbon projections (21) intersect with each other at the focal point (F) of the concave surface (11).

Abstract: An electron emitter includes a guard electrode 13 on the outer circumferential side of a carbon film structure 10 which is formed on a substrate 7 by plasma CVD method. This guard electrode 13 includes a curved surface portion (a curved surface portion that curves from top toward a side opposite to the film-forming direction) 13a convex in a film-forming direction of the carbon film structure 10. A curvature radius R1 of an outer-circumferential-side portion of the curved surface portion 13a is larger than or equal to a curvature radius R2 of a carbon-film-structure-side portion of the curved surface portion 13a.

Abstract: A carbon film of the present invention has an elongated needle shape whose radius decreases toward a tip. The shape is, preferably, a shape in which a field concentration coefficient ? in the Fowler-Nordheim equation is expressed by h/r where r denotes the radius in an arbitrary position and h denotes height from the arbitrary position to the tip.

Abstract: The present invention provides a carbon film that is remarkably excellent in current voltage (IV) characteristics. This is achieved by way of a carbon film structure, two or more carbon film assembly units 12 are formed on a substrate 10. The carbon film assembly units 12 comprise: a stem-like carbon film 14 which is made into a film in the shape of a long and thin needle; and a branch-like carbon film cluster 16 which is made into a film so as to surround the stem-like carbon film 14 from the halfway to the lower part of this stem-like carbon film 14. The stem-like carbon film 14 has the shape of a long and thin needle having a configuration which has a spiral streak-like step part 18 towards the distal end at the circumference face of a near tip and in which the radius becomes small as going to the distal end.

Abstract: A carbon film of the present invention has an elongated needle shape whose radius decreases toward a tip. The shape is, preferably, a shape in which a field concentration coefficient ? in the Fowler-Nordheim equation is expressed by h/r where r denotes the radius in an arbitrary position and h denotes height from the arbitrary position to the tip.

Abstract: Problem: To generate long plasma easily at low cost and to perform a plurality of film deposition methods using a single plasma generating device. Means for Solving the Problem A plasma generating device is provided with, in the vacuum inside thereof, a cylindrical electrode comprising an opening in a part thereof and generating plasma therein when gas is introduced thereinto and a direct-current negative voltage is applied thereto.

Abstract: A backlight 23 of the present invention has a panel case 24 and plural phosphor-coated anode sections 25 each arranged flatly in the panel case and plural linear cathode sections 26. Each of the plural linear cathode sections 26 has a conductive wire 33 having a great number of field concentration assisting concave/convex sections 34 formed on its outer peripheral surface and a carbon-based film 35 having, as a field electron emitter, a great number of sharp microscopic sections on the field concentration assisting concave/convex sections 34, wherein the field electron emitter emits electrons toward each of the plural phosphor-coated anode sections 25 so as to be radially widespread, when DC voltage is applied between the phosphor-coated anode sections 25 and the linear cathode sections 26.

Abstract: A lighting device of the present invention has a wire-shaped cathode provided along an axial direction, a phosphor-coated anode that opposes to the wire-shaped cathode in the axial direction and a vacuum sealing tube that vacuum-seals these cathode and anode, wherein the wire-shaped cathode has a wire and a carbon film provided on the entire circumference of this wire, and the phosphor-coated anode has an anode section and a phosphor section provided on this anode section.

Abstract: Provided is a method for uniformly producing a carbon film at a low cost with low power consumption. The method for producing a carbon film, including: a step of disposing a cylindrical member having an opening in part thereof in a vacuum chamber; a step of disposing a substrate inside the cylindrical member; a step of introducing a gas for carbon film production into the vacuum chamber; and a step of applying a voltage for plasma generation to the cylindrical member to thereby generate a plasma in the cylindrical member and to produce the carbon film on the surface of the substrate by the plasma.

Abstract: A carbon film of the present invention has an elongated needle shape whose radius decreases toward a tip. The shape is, preferably, a shape in which a field concentration coefficient ? in the Fowler-Nordheim equation is expressed by h/r where r denotes the radius in an arbitrary position and h denotes height from the arbitrary position to the tip.

Abstract: A backlight of the present invention has a panel case and phosphor-coated anode section arranged in the panel case and linear cathode section. The linear cathode section has a conductive wire having carbon nano-wall formed on its outer peripheral surface. A field electron emitter emits electrons toward the phosphor-coated anode section so as to be radially widespread, when DC voltage is applied between the phosphor-coated anode section and the linear cathode section.

Abstract: A backlight 23 of the present invention has a panel case 24 and plural phosphor-coated anode sections 25 each arranged flatly in the panel case and plural linear cathode sections 26. Each of the plural linear cathode sections 26 has a conductive wire 33 having a great number of field concentration assisting concave/convex sections 34 formed on its outer peripheral surface and a carbon-based film 35 having, as a field electron emitter, a great number of sharp microscopic sections on the field concentration assisting concave/convex sections 34, wherein the field electron emitter emits electrons toward each of the plural phosphor-coated anode sections 25 so as to be radially widespread, when DC voltage is applied between the phosphor-coated anode sections 25 and the linear cathode sections 26.

Abstract: A display panel according to the present invention has plural light-emitting units arranged every housing space for the respective display pixels. Each of the light-emitting units has a vacuum sealing tube, phosphor-coated anode section and linear cathode section, wherein the linear cathode section has a conductive wire, a great number of field concentration assisting concave/convex sections and a carbon-based film provided with a great number of sharp microscopic sections formed as a field electron emitter.