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| Number | Title | Issue Date |
| 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 |
| 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 |
| 7227300 | Projection tube apparatus A projection tube apparatus includes: a valve made up of a face panel having a screen face on its external face, a funnel connected to a rear portion of the face panel, and a neck portion; an electron gun that emits an electron beam and is housed in the neck portion... | 06/05/2007 |
| 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 |
| 7105996 | Electron gun for color CRT An electron gun for a color CRT includes a main focusing lens unit that focuses the electron beams generated by a triode unit. The main focusing lens unit includes a first and a second electrostatic screen grid having three electron beam through holes linearly-arran... | 09/12/2006 |
| 7064478 | Color cathode-ray tube having internal magnetic screening The invention is a color cathode-ray tube having a rectangular front face connected to a funnel shaped rear part, a neck connected to the rear part and having an electron gun therein, the gun is used to generate beams intended to scan the front face under the influe... | 06/20/2006 |
| 7038368 | Color picture tube apparatus having a pair of bar shaped magnets for correcting misconvergence due to the rotational shift of the electron beams On an outer circumferential surface of a neck portion of a funnel, a CPU having a pair of quadrupole magnets and a pair of bar-shaped magnets each having magnetic poles on both sides in a major axis direction are provided. The pair of bar-shaped magnets sandwich the... | 05/02/2006 |
| 7015634 | Projection type cathode ray tube device A pair of magnets of which magnetizing direction differs from each other in the horizontal direction (X axis) are arranged at upper and lower portions of a funnel-side opening portion of a deflection yoke. The pair of magnets are held and fixed to a coil support bod... | 03/21/2006 |
| 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 |
| 6946786 | Electron beam device with spacer An electron beam device comprising an electron source having an electron-emitting device, a member to be irradiated with an electron beam disposed opposite to the electron source, and an electrically conductive spacer disposed between the electron source and the mem... | 09/20/2005 |
| 6943490 | Deflection yoke with improved deflection sensitivity A deflection yoke mounted on a rear portion of a cathode ray tube (CRT) to deflect an electron beam emitted from an electron gun of the CRT includes a coil separator mounted on the CRT, a horizontal deflection coil mounted on an inside of the coil separator, having ... | 09/13/2005 |
| 6924589 | Color picture tube device having improved horizontal convergence A color picture tube device that can adjust convergence without causing increases in cost and in power consumption is provided. One pair of magnetic flux generation means for generating a static quadrupole magnetic field are positioned above and below an area where ... | 08/02/2005 |
| 6924590 | Color picture tube device with distortion correction coils A color picture tube device has a funnel glass, a pair of horizontal deflection coils, an insulating frame, and a pair of vertical deflection coils. The pair of horizontal deflection coils are opposed to each other in a vertical direction around the outer surface of... | 08/02/2005 |
| 6861793 | Color picture tube device with improved horizontal resolution A color picture tube device that can suppress the deformation of the electron beam spot shape and improve the horizontal resolution using a simple construction is provided. A horizontal deflection coil generates a horizontal deflection magnetic field that is substan... | 03/01/2005 |
| 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 |
| 6831400 | Color cathode ray tube apparatus having auxiliary magnetic field generator An electron gun assembly of a color cathode ray tube emits at least one electron beam having an oblong cross-sectional shape extending substantially in the horizontal direction, and emits three electron beams in a substantially non-convergent state toward the centra... | 12/14/2004 |
| 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 |
| 6753644 | Color cathode-ray tube and color cathode-ray tube apparatus A color cathode-ray tube including an in-line electron gun and a color cathode-ray tube apparatus including the same are provided. At an end, on a screen side, of the electron gun, two pairs of members for generating a magnetic field are placed above and below side ... | 06/22/2004 |
| 6710533 | Flat cathode-ray tube, electron gun for flat cathode-ray tube and producing method thereof In a flat cathode-ray tube, there are problems that an axis of electron beam is separated before the electron beam enters a main lens due to magnetic field of a magnet disposed outside a neck, and coma aberration is generated to degrade an image quality. It is an ob... | 03/23/2004 |
| 6686687 | Color display tube comprising an internal magnetic shield A color display tube with an elongated phosphor screen having a pattern of discrete phosphor elements. In order to reduce landing errors of the electron beams, in particular in the X direction, and simultaneously minimize the amount of magnetic material u... | 02/03/2004 |
| 6635985 | Grid electrodes formed on a polyimide substrate for a display device that comprises a permanent magnet A magnetic matrix display device has a grid electrode in which differing first grid (G1) and second grid (G2) apertures are used. A sensor element and a second grid electrode are combined as a single structure. Other aspects of the invention relate to a d... | 10/21/2003 |
| 6621204 | Color cathode ray tube having a deflection unit A clamp unit which brings respective vertical and horizontal cores and bias magnets of a magnetic current modulator into close contact with each other in the core arrangement direction is provided to a resin casing of the magnetic current modulator. Due t... | 09/16/2003 |
| 6586870 | Space-saving cathode ray tube employing magnetically amplified deflection A cathode ray tube includes an electron gun directing electrons towards a faceplate having an electrode biased at screen potential. The electron beam (three beams in a color tube) is magnetically deflected to scan across the faceplate to impinge upon phos... | 07/01/2003 |
| 6580208 | Deflection unit for color cathode ray tubes The present invention refers to a deflection unit for mounting on a color cathode ray tube, an associated tube and a corresponding display apparatus. The deflection unit comprises a pair of coils for vertical deflection and a pair of coils for horizontal ... | 06/17/2003 |
| 6525459 | CRT beam landing spot size correction apparatus and method A 90 percent electron gun aperture astigmatism is used in conjunction with a four-pole electromagnet to make a CRT electron beam just focus point and minimum beam width occur closer to the same focus voltage. A single grid may have the 90 percent astigmat... | 02/25/2003 |
| 6495954 | Cathode ray tube having reduction in deflection power consumption relative to funnel condition A cathode ray tube with a central axis includes a panel with an inner phosphor screen, and a funnel connected to the panel. The funnel has a cone portion with a neck sealing side, and a body portion extended from the cone portion to the panel. A deflectio... | 12/17/2002 |
| 6492783 | Deflection yoke and cathode ray tube device Horizontal line misconvergences produced at screen upper and lower portions, among rasters displayed by side electron beams are corrected without producing degradation in vertical deflection sensitivity so much and changing horizontal trapezoidal distorti... | 12/10/2002 |
| 6465944 | Space-saving cathode ray tube employing a six-pole neck coil In a cathode ray tube, an electron beam is directed towards a faceplate having an electrode biased at screen potential and is magnetically scanned across the faceplate to impinge upon phosphors thereon to produce light depicting an image. A six-pole coil ... | 10/15/2002 |
| 6424085 | Cathode ray tube having a deflection unit A deflection unit of a cathode ray tube is provided with a cooling fan. The fan includes means for reducing the disturbing effect of the electric field generated by the fan on the deflection of the electrons, or the fan is arranged in such a manner that t... | 07/23/2002 |
| 6404118 | Deflection yoke with a coil separator firmly engaged to the printed circuit board for preventing fluctuation A deflection yoke for preventing fluctuation of the deflection yoke by maintaining a firmly engaged state while preventing fracture and damage thereof caused by an assembling shock generated when assembling a printed circuit board and a rear cover. The pr... | 06/11/2002 |
| 6396206 | Cathode ray tube having multiple sets of orbital correction coils An electron gun which emits three electron beams consisting of a center beam and paired side beams arranged in line in the horizontal axis is arranged in the neck of the vacuum envelope. A neck-side orbital correction coil unit for over-converging the sid... | 05/28/2002 |
| 6373202 | Color cathode ray tube In a color cathode ray tube having a flat panel exterior surface, the screen distortion and the convergence give rise to problems. To overcome these problems, by arranging bar magnets in such a manner that they are disposed parallel to a screen and are sh... | 04/16/2002 |
| 6335589 | Color cathode ray tube having adjustment magnet assembly at neck portion A color cathode ray tube comprises a vacuum vessel including a panel portion having a phosphor screen on its inner face, a neck portion and a funnel portion joining the neck portion and the panel portion. An inline electron gun is disposed inside of the n... | 01/01/2002 |
| 6317106 | Grid electrodes for a display device A magnetic matrix display device has a grid electrode in which differing first grid (G1) and second grid (G2) apertures are used. A sensor element and a second grid electrode are combined as a single structure. Other aspects of the invention relate to a d... | 11/13/2001 |
| 6281623 | Core for deflecting yoke A core for a deflecting yoke for a CRT includes a first aperture at a neck portion side having a circular configuration, and a second aperture at a funnel portion side, an inner periphery of the second aperture at an edge surface thereof having two major ... | 08/28/2001 |
| 6259196 | CRT deflection-defocusing correcting member therefor, a method of manufacturing same member, and an image display system including same CRT A cathode ray tube including an electron gun including a cathode and a plurality of electrodes and for generating an electron beam, a phosphor screen and an electron beam deflection device. The cathode ray tube includes a deflection-defocusing correcting ... | 07/10/2001 |
| 6215239 | CRT deflection unit having a cooling fin A cathode ray tube includes a deflection unit (11) having a cooling fin (25) which is attached to the surface of a tapering surface on a yoke ring (23) by lugs (27). At least one of the lugs has a free end extending axially and outwardly in thermal contac... | 04/10/2001 |
| 6211610 | Color cathode ray tube with first and second magnetic compensators A cathode ray tube including (a) a panel having a fluorescent film on an inner surface thereof for three primary colors emission, (b) an electron gun for emitting electron beams to the fluorescent film, (c) a deflecting yoke located between the panel and ... | 04/03/2001 |
| 6201344 | CRT having an electron gun with magnetic pieces attached to one of a plurality of electrodes, configured to correct deflection defocusing A cathode ray tube includes a phosphor screen, an electron gun having a plurality of electrodes and a deflection device. Magnetic pieces attached to one of the electrodes and disposed in a magnetic deflection field generated by the deflection device are c... | 03/13/2001 |
| 6194823 | Color cathode ray tube having adjustment magnet assembly at the neck portion of the tube A color cathode ray tube has a vacuum vessel including a panel portion having a phosphor screen on its inner face, a neck portion and a funnel portion jointing the neck portion and the panel portion; an electron gun assembly including an electrostatic mai... | 02/27/2001 |
