Abstract:
Image intensifiers may include a photocathode that emits photoelectrons in proportion to the rate photons impact the photocathode. The photoelectrons are multiplied using a microchannel plate that includes a plurality of microchannels. Photoelectrons are scattered by the microchannel plate when the photoelectrons strike the surface of the microchannel plate rather than enter one of the microchannels. Electron scatter within an image intensifier results in a halo or bloom around bright or luminous objects. Halo or bloom may be minimized by reducing the electron scatter within the image intensifier. Deposition of an anti-scattering layer on the surface of the microchannel plate within the image intensifier can absorb photoelectrons that fail to enter a microchannel and may thus reduce the incidence of halo or bloom.
Abstract:
A cathodoluminescent device, including a luminescent layer having a first side, called the front side, that is intended to receive incident electrons, the luminescent layer being suitable for absorbing incident electrons and for emitting light radiation in response, wherein the front side of the luminescent layer is coated with a layer including electrically conductive nanowires.
Abstract:
An electron emission device includes a number of electron emission units spaced from each other, wherein each of the number of electron emission units includes a first electrode, a semiconductor layer, an electron collection layer, an insulating layer, and a second electrode stacked with each other, the electron collection layer is in contact with the semiconductor layer and the insulating layer, and the electron collection layer is a conductive layer.
Abstract:
An electron emission device includes a number of first electrodes and a number of second electrodes intersected with each other to define a number of intersections. An electron emission unit is sandwiched between the first electrode and the second electrode at each of the number of intersections, wherein the electron emission unit includes a semiconductor layer and an insulating layer stacked together, the semiconductor layer defines a number of holes, the carbon nanotube layer covers the number of holes, and a portion of the carbon nanotube layer is suspended on the number of holes.
Abstract:
Disclosed are violet, blue, and green phosphors having excellent durability and high luminance. Specifically disclosed is a phosphor which contains a metal element M (M is at least one element selected from among Mn, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Tm and Yb) for constituting a metal ion, which is solid-solubilized in an AlON crystal, an AlON solid solution crystal or an inorganic crystal having the same crystal structure as AlON. The phosphor is capable of emitting fluorescence having a peak in the wavelength range from 300 nm to 700 nm. Also disclosed is a method for producing such a phosphor. Further disclosed are an illuminating device and an image display each containing such a phosphor.
Abstract:
In a cathode ray tube including a panel provided with a phosphor screen, a funnel integrated with the panel, an electron gun disposed inside the funnel, a magnetic shield (1) for shielding an electron beam (5) emitted from the electron gun against an external magnetic field, and a frame (2) for holding the magnetic shield (1), the magnetic shield (1) includes, at a portion to be joined with the frame (2), a bent portion (20) bent toward a tube axis side, and a thickness T of the bent portion (20) at its edge on the tube axis side is 0.08 mm or less. By making the thickness T small, halation that is liable to occur in a cathode ray tube with a large deflection angle can be suppressed because electron beams reflected from an end face (11) and allowed to reach the screen without being shielded by the frame (2) are reduced.
Abstract:
An object of the present invention is to provide a high definition PDP screen without lowering the PDP luminescence efficiency. The display panel is provided with a plurality of cells that are arranged in a matrix, each of the plurality of cells emitting a different unique luminescent color; wherein a plurality of cells each bearing first luminescent color are disposed on every other line in a vertical direction, and a line of cells each having second luminescent color and a line of cells each having third luminescent color are alternated with a line of said plurality of cells having first luminescent color respectively therebetween.
Abstract:
A pixel for a display device has a shape outlined by a black matrix or a barrier. The pixel is shaped with a polygon having 2(n+1) angled portions where n is a natural number of 2 or more. Such a pixel may be also processed without a previously formed black matrix.
Abstract:
A display device (1) with a display window (3) provided with an anti-static, light-absorbing coating (9) on the basis of silicon dioxide comprising an electroconductive, light-absorbing pigment or dye, for example soot (carbon black). A method of providing the display window (3) with an anti-static, light-absorbing coating (9).
Abstract:
A color cathode ray tube is disclosed, that comprises an optical filter layer 2 formed on an inner surface of a glass panel 1, a thin film formed on a front surface of the optical filter layer 2 and composed of a metal oxide, and a fluorescent substance layer 4 formed on the thin film 3 corresponding to a pattern of the optical filter layer 2. The surface state of the thin film 3 is rougher than the surface state of the optical filter layer 2 and similar to the surface state of the fluorescent substance layer 4. Thus, the optical filter layer 2 sparsely contacts the fluorescent substance layer 4. Thus, the influence of the optical filter layer 2 to the fluorescent substance layer 4 can be reduced. Consequently, fluorescent substance particles of the fluorescent substance layer 4 can be suppressed from breaking, dropping, and so forth. Thus, an excellent fluorescent surface can be obtained at high throughput.