Abstract: A method of aligning carbon nanotubes (CNTs) and a method of manufacturing a field emission device (FED) using the same, wherein a mold having an intaglio pattern is prepared, an aqueous solution containing an amphiphilic organic material and the CNTs are coated on a surface of a substrate, the mold is adhered to the substrate surface to cause the aqueous solution to flow into the intaglio pattern by a capillary force, and the mold is removed from the substrate surface to vertically align the CNTs on the substrate surface.

Abstract: A field emission backlight device may include a first substrate and a second substrate separate from and roughly parallel to each other, a first anode electrode and a second anode electrode that face each other on inner surfaces of the first substrate and the second substrate, and cathode electrodes separate from and roughly parallel to one another between the first substrate and the second substrate. It may also include electron emission sources disposed on the cathode electrodes to emit electrons by an electric field and a phosphorous layer disposed on the first anode electrode or the second anode electrode.

Abstract: A method for driving a field emission device (FED) applies an alternating (AC) voltage as a driving voltage for emitting electrons in a field emission device comprising cathode electrode including an emitter and an anode electrode facing the cathode electrode. A method for aging an FED uses a constant voltage so that electrons cannot be emitted from the electron emission source, and an AC voltage so that electrons can be periodically emitted from the emitter when the FED is aged.

Abstract: A method of aligning carbon nanotubes (CNTs) and a method of manufacturing a field emission device (FED) using the same, wherein a mold having an intaglio pattern is prepared, an aqueous solution containing an amphiphilic organic material and the CNTs are coated on a surface of a substrate, the mold is adhered to the substrate surface to cause the aqueous solution to flow into the intaglio pattern by a capillary force, and the mold is removed from the substrate surface to vertically align the CNTs on the substrate surface.

Abstract: A field emission display device and a field emission type backlight device having a sealing structure for a vacuum exhaust are provided. The field emission display device is constructed with a cathode substrate and an anode substrate attached to each other and facing each other and a vacuum-exhausted panel space formed therebetween to generated a visual image. Also, the field emission display device is constructed with a sealing member disposed along edges of the cathode substrate and the anode substrate to seal the panel space. At least one inlet exposed to the panel space and an exhaust passage through which the inlet communicates with an outside of the field emission display device are formed in the sealing member. The field emission display device and the field emission type backlight device according to the present invention has a reduced number of manufacturing processes and is suitable for a compact, slim and lightweight design, and a large screen by having the sealing structure for the vacuum exhaust.

Abstract: An illuminating device includes: an upper substrate and a lower substrate facing each other and spaced apart from each other; an anode electrode arranged on a lower surface of the upper substrate; a phosphor layer arranged on a lower surface of the anode electrode; a cathode electrode arranged on an upper surface of the lower substrate; an electron emission source arranged on the cathode electrode; and a reflection film arranged between the electron emission source and the phosphor layer and respectively separated therefrom, the reflection film being patterned on a surface facing the phosphor layer to diffuse light emitted from the phosphor layer. The illuminating device provides improved brightness uniformity by forming a pattern on the reflection film so that light can be uniformly diffused or dispersed.

Abstract: A field emission backlight device may include a first substrate and a second substrate separate from and roughly parallel to each other, a first anode electrode and a second anode electrode that face each other on inner surfaces of the first substrate and the second substrate, and cathode electrodes separate from and roughly parallel to one another between the first substrate and the second substrate. It may also include electron emission sources disposed on the cathode electrodes to emit electrons by an electric field and a phosphorous layer disposed on the first anode electrode or the second anode electrode.

Abstract: A field emission backlight unit includes: an upper substrate and a lower substrate spaced apart from each other and facing each other; an anode electrode arranged on a lower surface of the upper substrate; a phosphor layer arranged on a lower surface of the anode electrode; cathode electrodes arranged on an upper surface of the lower substrate; an insulating layer having cavities adapted to expose the cathode electrode; a flat panel shaped gate electrode arranged on the insulating layer and having gate apertures respectively connected to the cavities; and an emitter arranged on the cathode electrode; the gate electrode is adapted to receive a ground voltage and the cathode electrode is adapted to receive a negative voltage

Abstract: A field emission backlight device may include a first substrate and a second substrate separate from and roughly parallel to each other, a first anode electrode and a second anode electrode that face each other on inner surfaces of the first substrate and the second substrate, and cathode electrodes separate from and roughly parallel to one another between the first substrate and the second substrate. It may also include electron emission sources disposed on the cathode electrodes to emit electrons by an electric field and a phosphorous layer disposed on the first anode electrode or the second anode electrode.

Abstract: A field emission backlight unit includes: upper substrate and lower substrate separated from each other and facing each other; an anode formed on a bottom surface of the upper substrate; a phosphor layer formed on a bottom surface of the anode; a plurality of cathodes and gate electrodes alternately formed on a top surface of the lower substrate; and emitters formed on the cathodes; the gate electrodes include first gate electrodes formed of a conductive material on the top surface of the lower substrate and second gate electrodes having a greater thickness than that of the first gate electrodes and formed on a top surface of the first gate electrodes.

Abstract: A ferroelectric cold cathode and a ferroelectric field emission device including the ferroelectric cold cathode includes: a substrate; a lower electrode layer arranged on a upper surface of the substrate, the lower electrode layer including a conductive material; a ferroelectric layer arranged on a upper surface of the lower electrode, the ferroelectric layer including a ferroelectric material; and an upper electrode including an ultrafine linear material net arranged on the ferroelectric layer and exposing a portion of the upper surface of the ferroelectric layer through a plurality of net holes of conductive ultrafine linear material particles distributed in a net structure.

Abstract: A thermal electron emission backlight device comprises: a first substrate and a second substrate disposed in parallel and separated by a predetermined distance from each other; a first anode electrode and a second anode electrode facing the first anode electrode, the first and second anode electrodes being formed on inner surfaces of the first substrate and the second substrate, respectively; cathode electrodes disposed at predetermined intervals and in parallel with each other between the first substrate and the second substrate; a phosphor layer formed on the second anode electrode; and a plurality of spacers disposed between the first substrate and the second substrate so as to maintain the predetermined distance therebetween. When a predetermined voltage is applied to the cathode electrodes, thermal electrons are emitted from the cathode electrodes.

Abstract: A method of making a catalyst layer for synthesis of carbon nanotubes is provided. The method includes: coating a thin film formed of copolymer on a substrate; heat treating the thin film coated on the substrate to form a regular structure; removing a part of block copolymers that form the copolymer; depositing a catalyst base on the thin film from which a part of the block copolymers are removed; and removing the thin film to form a catalyst layer formed of a plurality of metal catalyst dots.

Abstract: In a field emission backlight unit, a method of driving the same, and a method of manufacturing a lower substrate, the field emission backlight unit includes: a lower substrate; first and second electrodes alternately formed in parallel lines on the lower substrate; emitters interposed between the lower substrate and the first electrodes; an upper substrate spaced a predetermined distance from the lower substrate and facing the lower substrate; a third electrode formed on a bottom surface of the upper substrate; and a phosphor layer formed on the third electrode. The driving method comprises applying a cathode voltage to the first electrodes and a gate voltage to the second electrodes, followed by reversing the application of the voltages to the first and second electrodes. The manufacturing method comprises forming and drying or firing a patterned carbon nanotube (CNT) layer, and then pattering, drying and firing a conductive thick film.

Abstract: A method of fabricating a field emission display employing carbon nanotubes (CNTs) as electron emitters is provided. The method includes forming a cathode on a substrate; forming a gate insulation layer having a plurality of gate holes on the cathode; forming a gate electrode having a plurality of via-holes corresponding to the gate holes, respectively, on the gate insulation layer; forming a plurality of conductive columns higher than the gate electrode on the cathode within the respective gate holes; adhering the CNTs to the bottom of a plate template which is separately provided; bringing the bottom of the template having the CNTs to contact the tops of the conductive columns to adhere the CNTs to the tops of the conductive columns; and firing the conductive columns to lower the levels thereof.

Abstract: A field emission backlight device may include a first substrate and a second substrate separate from and roughly parallel to each other, a first anode electrode and a second anode electrode that face each other on inner surfaces of the first substrate and the second substrate, and cathode electrodes separate from and roughly parallel to one another between the first substrate and the second substrate. It may also include electron emission sources disposed on the cathode electrodes to emit electrons by an electric field and a phosphorous layer disposed on the first anode electrode or the second anode electrode.

Abstract: A field emission type backlight device with high light efficiency may include a front substrate, a reflective substrate on the front substrate, a rear substrate separated from the front substrate by a predetermined gap, anode electrodes provided with a predetermined gap between them on the rear substrate, a light-emitting layer on the anode electrode, a cathode electrode and a gate electrode spaced apart on the rear substrate between the anode electrodes, and an electron emission source emitting electrons by electric field on the cathode electrode.

Abstract: A method of forming a carbon nanotube emitter includes: forming a carbon nanotube composite on a substrate with a predetermined shape, coating surface treating material in a liquid phase on the carbon nanotube composite and drying the surface treating material, and peeling the dried surface treating material off of the carbon nanotube composite.

Abstract: A plasma lamp includes a container filled with a discharge gas, a main discharge electrode unit located in the container and including a first electrode and a second electrode, which define a main discharge region of a first gap and generate a main discharge, and a preliminary discharge electrode unit having a high resistance unit and arranged on at least one of the first electrode and the second electrode, and located adjacent to the main discharge region to define a preliminary discharge region of a second gap, which is smaller than the first gap. The preliminary discharge electrode unit of the provided plasma lamp induces a preliminary discharge for a short time at a low voltage. A main discharge occurs conveniently due to charged particles generated by the preliminary discharge.

Abstract: A method of manufacturing a field emitter array using carbon nanotubes, low voltage field emission material, is provided. The method includes the steps of (a) forming a conductive thin film layer on the top of a transparent substrate having a transparent electrode and exposing a predetermined portion of the transparent electrode; (b) forming an opaque thin film layer on the exposed predetermined portion of the transparent electrode; (c) depositing an insulation material on the entire top surface of the transparent substrate and removing the insulation material from the top surfaces of the conductive thin film layer and the opaque thin film layer, thereby forming an insulation layer; (d) forming a gate layer on the top of the insulation layer; and (e) removing the opaque thin film layer and forming carbon nanotube tips on the top of the exposed transparent electrode.