Abstract:
A flat panel display and a method for forming a carbon nanotube based flat panel display. In one embodiment, the flat panel display includes a barrier layer formed between a catalyst layer upon which microstructures of carbon nanotubes are formed and a resistor layer. The barrier layer acts as an anti diffusion layer between the catalysts layer and the resistor layer to prevent the catalyst layer from diffusing into the resistor layer during the growing of the carbon nanotubes. The barrier layer also enhances the adhesion characteristics of the catalyst layers to enable the uniform growth of the carbon nanotube structures on the catalyst layer.
Abstract:
An N-channel FDM signal is converted into complex signals of baseband frequencies (1-6) spaced at intervals equal to frequency Δf. The complex baseband signals are converted first into digital samples (7-9)having a frequency NΔf and then into N parallel digital signals (11). A plurality of first FIR subfilters (17-1 through 17-N) respectively perform filtering on each of the parallel digital signals at frequency Δf to produce a first series of filtered digital signals from each of the first FIR subfilters, and (m - 1) groups of second FIR subfilters respectively perform filtering on each of the parallel digital signals at frequency Δf to produce a second series of filtered digital samples from each of the second FIR subfilters at timing displaced with respect to the first series by a/mΔf, where is an integer ranging from unity to (m - 1) and m is an integer equal to or greater than 2. Outputs of the first FIR subfilters are combined with outputs of the second FIR subfilters to produce N summation outputs at frequency mΔf. An N-point Fast Fourier Transform processor (14) performs fast Fourier transform on the N summation outputs at frequency mΔf to derive digital channels. Because of the oversampling at frequency mΔf, each of the digital channels has a frequency response which can be made flat over the bandwidth Δf.
Abstract:
An electron gun device according to the present invention emits an electron beam by means of heating to a high temperature in a vacuum. According to the present invention, the surface of a material (108, 125), which emits an electron beam, is a hydrogenated metal that is melted and in a liquid state during a high-temperature operation; the liquid hydrogenated metal is contained in a hollow cover tube container (102, 124), which is in a solid state during the high-temperature operation, in the form of a hydrogenated liquid metal or in the form of a liquid metal before hydrogenation, and heated together with the cover tube container (102, 124) to a high temperature; subsequently, the hydrogenated liquid metal is exposed from the cover tube container (102, 124) and forms a liquid surface where gravity, the electric field and the surface tension of the liquid surface are balanced; and an electron beam is emitted from the exposed surface of the hydrogenated liquid metal.
Abstract:
Zusammensetzung, enthaltend a) ein duroplastisches, thermoplastisches oder strukturell vernetztes Polymer und b) einen Charge-Transfer Komplex der Formel I in Form eines Netzwerks aus Kristallnadeln in der Polymermatrix,
[A] ⊖· B ⊕ (I),
worin
A eine Verbindung der Formel II oder eine Mischung von Verbindungen der Formel II ist, worin die R gleich sind und für H oder C₁-C₄-Alkyl stehen, oder die benachbarten R zusammen -(CH₂)₃- oder -(CH₂)₄- darstellen; R₁ H oder C₁-C₄-Alkyl bedeutet; X₁ =N-CN darstellt und X₂, X₃ und X₄ unabhängig voneinander =O oder =N-CN bedeuten, und B eine Verbindung der Formel III oder IIIa bedeutet,
worin R₂, R₃, R₄ und R₅ unabhängig voneinander H, lineares oder verzweigtes C₁-C₁₈-Alkyl-(Z₁) n -, unsubstituiertes oder mit C₁-C₄-Alkyl, C₁-C₄-Alkoxy, C₁-C₄-Alkylthio substituiertes Phenyl-(Z₁) n - oder Benzyl-(Z₁) n - bedeuten, oder R₂ und R₃ sowie R₄ und R₅ je zusammen unabhängig voneinander unsubstituiertes oder mit C₁-C₄-Alkyl, C₁-C₄-Alkoxy, C₁-C₄-Alkylthio substituiertes Trimethylen, Tetramethylen, -Z₂-(CH₂)-Z₂-, -Z₂-(CH₂)₂-Z₂-, -Z₁-CH=CH-Z₁- oder -CH=CH-CH=CH- darstellen, n für 0 oder 1 steht, Y₁ und Y₂ unabhängig voneinander -S- oder -Se- sind, Z₁ für -S- oder -Se- steht, Z₂ -O-, -S- oder -Se- darstellt, Z -S-, -Se- oder NR₇ bedeutet und R₇ H, C₁-C₆-Alkyl, Phenyl oder Benzyl ist, und R₆ für H, C₁-C₄-Alkyl, Phenyl oder Benzyl steht. Diese Zusammensetzungen sind elektrische Leiter.
Abstract:
A carbon film (703) used for field emission cathode is a layer of thin carbon film on a substrate (803). The carbon film has a UV Raman band in range of 1578 cm to 1620 cm with full width at half maximum from 25 to 165 cm .
Abstract:
An N-channel FDM signal is converted into complex signals of baseband frequencies (1-6) spaced at intervals equal to frequency Δf. The complex baseband signals are converted first into digital samples (7-9)having a frequency NΔf and then into N parallel digital signals (11). A plurality of first FIR subfilters (17-1 through 17-N) respectively perform filtering on each of the parallel digital signals at frequency Δf to produce a first series of filtered digital signals from each of the first FIR subfilters, and (m - 1) groups of second FIR subfilters respectively perform filtering on each of the parallel digital signals at frequency Δf to produce a second series of filtered digital samples from each of the second FIR subfilters at timing displaced with respect to the first series by a/mΔf, where is an integer ranging from unity to (m - 1) and m is an integer equal to or greater than 2. Outputs of the first FIR subfilters are combined with outputs of the second FIR subfilters to produce N summation outputs at frequency mΔf. An N-point Fast Fourier Transform processor (14) performs fast Fourier transform on the N summation outputs at frequency mΔf to derive digital channels. Because of the oversampling at frequency mΔf, each of the digital channels has a frequency response which can be made flat over the bandwidth Δf.
Abstract:
An industrial scale method for patterning nanoparticle emitters for use as cathodes in a display device is disclosed. The low temperature method can be practiced in high volume applications, with good uniformity of the resulting display device. The method steps involve deposition of CNT emitter material over an entire surface of a prefabricated composite structure, and subsequent removal of the CNT emitter material from unwanted portions of the surface using physical methods.
Abstract:
A flat panel display and a method for forming a carbon nanotube based flat panel display. In one embodiment, the flat panel display includes a barrier layer formed between a catalyst layer upon which microstructures of carbon nanotubes are formed and a resistor layer. The barrier layer acts as an anti diffusion layer between the catalysts layer and the resistor layer to prevent the catalyst layer from diffusing into the resistor layer during the growing of the carbon nanotubes. The barrier layer also enhances the adhesion characteristics of the catalyst layers to enable the uniform growth of the carbon nanotube structures on the catalyst layer.
Abstract:
A field emission device and method of forming a field emission device are provided in accordance with the present invention. The field emission device is comprised of a substrate (12) having a deformation temperature that is less than about six hundred and fifty degrees Celsius and a nano-supported catalyst (22) formed on the substrate (12) that has active catalytic particles that are less than about five hundred nanometers. The field emission device is also comprised of a nanotube (24) that is catalytically formed in situ on the nano-supported catalyst (22), which has a diameter that is less than about twenty nanometers.
Abstract:
A cathode includes a carbon nanotube layer (602), which is optimized with a low work function material, such as an alkali (603). The inclusion of the alkali material improves the field emission properties of the carbon nanotube layer.