Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 7675226 | High-frequency, high-voltage electron switch A high-frequency, high-voltage electron switch includes an electron source, a steering mechanism, a mask or anode plate, and a target. The electron source produces a beam of electrons with a voltage of at least about 1 kV that impinges upon the anode plate. The stee... | 03/09/2010 |
| 7411342 | Deflection unit for self-converging cathode-ray tubes with reduced trapezoid differential Electromagnetic deflection unit for colour cathode-ray tubes, including a pair of frame deflection coils and a pair of line deflection coils, at least one of these two pairs of coils having the shape of a saddle, each saddle-shaped deflection coil having a rear bund... | 08/12/2008 |
| 7385341 | Cathode-ray tube apparatus with magnetic spacers between magnetic rings A plurality of magnet rings for correcting a convergence are arranged in a tube axis direction with spacers interposed therebetween, on an outer circumferential surface of a neck. A velocity modulation coil for modulating a scanning velocity in a horizontal directio... | 06/10/2008 |
| 7355331 | Cathode-ray tube apparatus In a cross-section including a tube axis, assuming that T1 represents a thickness of a funnel at a point on an outer circumferential surface of the funnel, which is placed at the same position in a tube axis direction as that of an end of a horizontal deflect... | 04/08/2008 |
| 7355332 | Cathode ray tube An image display device includes a cathode ray tube. The cathode ray tube includes a panel with an inner phosphor screen, and a funnel connected to the panel with a cone portion mounting a deflection unit on the outer circumference thereof. A neck is connected to th... | 04/08/2008 |
| 7309953 | Electron beam pumped laser light source for projection television An electron beam pumped laser including a surface-emitting laser faceplate oriented at a non-perpendicular angle. Embodiments are described in which a bending coil bends the electron beam, or in which the faceplate is situated in the direct path of the e-beam emissi... | 12/18/2007 |
| 7283118 | Back light unit and liquid crystal display apparatus A back light unit includes a lamp, a lamp house where the lamp is housed, a diffusion plate provided parallel to a main surface of the lamp house, a display part receiving light irradiated from the lamp and displaying, a frame member that has a structure in which th... | 10/16/2007 |
| 7274135 | Color picture tube apparatus with particular deflection yoke structure A deflection yoke includes ferrite core, horizontal deflection coil, vertical deflection coil, and insulating frame for insulating the horizontal and vertical deflection coils. The deflection yoke has a cross section that satisfies the following A to C. A: A plurali... | 09/25/2007 |
| 7211941 | Deflection yoke and cathode-ray tube apparatus A deflection yoke includes a horizontal deflection coil, a vertical deflection coil, an insulating frame made of an insulating material, a deflection adjusting plate attached to an outer circumferential surface of the insulating frame, and a ferrite core covering at... | 05/01/2007 |
| 7205559 | Electron beam apparatus and device manufacturing method using same An electron beam apparatus including an electron gun for directing a plurality of primary electron beams onto a sample, an objective lens for forming an electric field to accelerate a plurality of secondary electron beams emitted from the sample, and a separator for... | 04/17/2007 |
| 7183703 | Cathode ray tube and manufacturing method of deflection coil A cathode ray tube comprises a panel having a fluorescent screen on an inner surface; a funnel connected to the panel, an electron gun housed in the funnel; emitting electron beams; and a shadow mask for selecting colors of the electron beams emitted from the electr... | 02/27/2007 |
| 7061170 | Deflection yoke having magnets for correcting raster distortion and cathode-ray tube apparatus having the deflection yoke A permanent magnet is selectively picked for a deflection yoke and provided on the periphery of the cathode ray tube for controlling the direction of an electron beam emitted towards a screen from an electron gun. The permanent magnet can adjust an irradiating point... | 06/13/2006 |
| 7005789 | Method and apparatus for magnetic focusing of off-axis electron beam Axially symmetric magnetic fields are provided about the longitudinal axis of each beam of a multi-beam electron beam device. The magnetic field symmetry is independent of beam voltage, beam current and applied magnetic field strength. A flux equalizer assembly is d... | 02/28/2006 |
| 6975064 | Cathode ray tube having funnel with a reverse curvature This invention relates to a cathode ray tube having a funnel in the shape of a reverse curvature designed to improve the strength for the glass manufacturing process and test specification. In the present invention, a reverse radius is applied to the whole of the re... | 12/13/2005 |
| 6952077 | Electron gun for cathode ray tube An electron gun for a cathode ray tube includes a cathode for radiating electron beams, a scanning velocity modulation coil for synchronizing the electron beams with an image signal, a focus electrode having first and second sub-electrodes disposed with a gap throug... | 10/04/2005 |
| 6894430 | Color cathode-ray tube A rectangular-shaped deflection yoke, RTC (Round Core Tetra Coil Combined Deflection Yoke) enhances deflection sensitivity of a cathode-ray tube. More specifically, a deflection yoke structure for a cathode-ray tube is mounted with rectangular shaped deflection coil... | 05/17/2005 |
| 6891340 | Tracking picture tube The present invention relates to a tracking picture tube of the type in which comb-shaped electrodes or optical detecting means (12, 13) are used for generating a signal related to the position of an electron beam with respect to the strips (5). The tu... | 05/10/2005 |
| 6888298 | Cathode ray tube with convergence unit The invention relates to a color display device comprising an electron gun (5) for generating three electron beams (6,7,8), and convergence means (14) for dynamically influencing the convergence of the electron beams. The convergence means (1... | 05/03/2005 |
| 6882097 | Deflection yoke A deflection yoke apparatus include a saddle-type coil bobbin, first guide grooves, second guide groove, third guide groove, and a multi-wire conductor. The saddle-type coil bobbin has a front end portion and a rear end portion. The first guide grooves is formed in ... | 04/19/2005 |
| 6879095 | Deflection yoke and cathode ray tube apparatus provided with the same A deflection yoke on a yoke mounting portion with a truncated pyramid shape has a pair of saddle-type horizontal deflecting coils that is located symmetrically with a central axis and has a truncated pyramid shape. A core with a truncated cone shape is coaxially loc... | 04/12/2005 |
| 6856081 | Method and apparatus for magnetic focusing of off-axis electron beam Axially symmetric magnetic fields are provided about the longitudinal axis of each beam of a multi-beam electron beam device. The magnetic field symmetry is independent of beam voltage, beam current and applied magnetic field strength. A flux equalizer assembly is d... | 02/15/2005 |
| 6825603 | Deflection yoke structure for cathode ray tube The present invention relates to a cathode ray tube having a deflection yoke including a circular ferrite core and a deflection coil whose cross-section is in a rectangular shape for improving a deflection sensitivity of the cathode-ray tube, and more particularly t... | 11/30/2004 |
| 6824625 | Magnetostriction control alloy sheet, a part of a braun tube, and a manufacturing method for a magnetostriction control alloy sheet The invention relates to a magnetostriction control alloy sheet advantageously used as a high resolution shadow mask having a low coefficient of thermal expansion, superior magnetic properties and a high Young's modulus after a blackening process, a manufacturing pr... | 11/30/2004 |
| 6798130 | Deflection yoke and cathode ray tube apparatus provided with the same A deflection yoke of a cathode ray tube apparatus comprises a pair of saddle-type horizontal deflection coils located symmetrically with respect to a central axis and substantially in the shape of a truncated pyramid. A magnetic core substantially in the shape of a ... | 09/28/2004 |
| 6744192 | Multipole unit for a color picture tube with integrated spring element A multipole unit normally consists of a support tube, a threaded ring, a plurality of magnetic rings, a plurality of spacer rings and a spring ring. According to the present invention, the structural design of a multipole unit is simplified in that the threaded ring... | 06/01/2004 |
| 6741021 | Electron gun and production method thereof An electron gun includes a grid electrode having a thin plate portion in which an electron beam aperture is formed, wherein the thin plate portion is formed by using a die and punch die to bulge a portion of a metal plate in the plate thickness direction to such an ... | 05/25/2004 |
| 6734613 | Electron beam controlling device for CRT display system A thin cathode ray tube display system and associated components are disclosed. The system includes a thin cathode ray tube, a body having a substantially flat back element and a front element attached wherein a vacuum is maintained in the body, a neck element attac... | 05/11/2004 |
| 6717347 | Funnel-and-neck sealing body for projection tube A funnel-and-neck sealing body comprises a funnel having a substantially rectangular large opening to which a panel for projection tube is sealed, and a circular small opening; and a neck tube of substantially a cylindrical shape sealed to the small opening of the f... | 04/06/2004 |
| 6686708 | Display device comprising a deflection unit A color display device comprising a cathode ray tube and a deflection unit is described. The display device includes compensation coils for correcting a raster distortion in the raster displayed on the screen and means for providing correction currents th... | 02/03/2004 |
| 6635986 | Flat CRT display A plurality of field emission device cathodes each generate emission of electrons, which are then controlled and focused using various electrodes to produce an electron beam. Horizontal and vertical deflection techniques, similar to those used within a ca... | 10/21/2003 |
| 6624578 | Cathode ray tube having multiple field emission cathodes Apparatus and method are provided for using a multi-element field emission cathode in a color cathode ray tube. The field emission cathode may have from four to ten field emission arrays linearly arranged. The arrays are preferably formed from carbon-base... | 09/23/2003 |
| 6603252 | Space-saving cathode ray tube A cathode ray tube includes an electron gun directing electrons towards a faceplate having an electrode biased at screen potential. The electron beam is magnetically deflected to scan across the faceplate to impinge upon phosphors thereon to produce light... | 08/05/2003 |
| 6590327 | Color cathode ray tube having flat outer face A color cathode ray tube comprises a panel which outside surface is flat and inside surface has curvature, and a pressed shadow mask having a curved surface opposed to the panel inside surface. The curved surface of the shadow mask is such that the radius... | 07/08/2003 |
| 6577082 | Deflection yoke for braun tube In a deflection yoke for a braun tube deflecting an electron beam radiated from an electron gun to a screen and including a horizontal deflection coil, a vertical deflection coil and a ferrite core, the horizontal deflection coil is installed inside a fun... | 06/10/2003 |
| 6541903 | Cathode ray tube and method for punched electrode profile with predetermined angular range The profile lines of plate-like grid electrodes are formed by a first punching step and separation lines of the plate-like grid electrodes are formed by a subsequent punching step. The angle of a crossing portion formed by the profile line and the separat... | 04/01/2003 |
| 6541902 | Space-saving cathode ray tube A cathode ray tube includes an electron gun directing electrons towards a faceplate having an electrode biased at screen potential. The electron beam is magnetically deflected to scan across the faceplate to impinge upon phosphors thereon to produce light... | 04/01/2003 |
| 6522090 | Cathode ray tube display device and cathode ray tube display method When an interval between a Gm electrode and a cathode is broadened with temperature, a potential change similar to a case that a Gm electrode voltage is lowered is generated. If a cathode voltage is constant, a quantity of electrons which pass is decrease... | 02/18/2003 |
| 6472808 | Color cathode ray tube having electrostatic quadrupole lenses A color cathode ray tube includes third, fourth and fifth electrodes and an anode in its electron beam focusing section. A first-type electrostatic quadrupole lens is formed between first and second members of the fifth electrode for focusing electron bea... | 10/29/2002 |
| 6452321 | Deflection device for a cathode ray tube having a correction coil with a non-circular shape A vacuum envelope of a cathode ray tube includes a face panel having a phosphor screen formed on the inner surface, a funnel joined to the face panel and having a yoke-mounting section, and an electron gun for emitting electron beams toward the phosphor s... | 09/17/2002 |
| 6437500 | Seamless electron transfer for multiple-gun direct view CRTS A CRT for the display of a large screen television set which includes a tube envelope having a pair of tube necks and a phosphor display screen, a pair of electron guns arranged in a same horizontal plane and each positioned in a different one of the tube... | 08/20/2002 |
