Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7226642 | System and methods for manufacturing a liquid crystal device The invention provides a thin-film forming device, a thin-film forming method, a device for manufacturing a liquid crystal display, a method for manufacturing a liquid crystal display, a device for manufacturing a thin-film structure, a method for a thin-film struct... | 06/05/2007 |
| 7118588 | Scanning treatment laser An therapeutic laser device that incorporates a scanning head to direct low level laser light into a treatment zone that can have any desired shape or energy distribution within a hemisphere forward of the scanning head. The device enables laser light of different p... | 10/10/2006 |
| 6447963 | Method of making a light quantity correction filter and method of manufacturing a color cathode ray tube using the light quantity correction filter made by the method A light quantity correction filter that can implement the desired transmittance distribution precisely and easily without complicating an exposure system, a method of making the light quantity correction filter, and a method of manufacturing a color catho... | 09/10/2002 |
| 6013400 | Method of manufacturing a luminescent screen assembly for a cathode-ray tube The invention relates to a method of manufacturing a luminescent screen structure 22 with a light-absorbing matrix 23, having a plurality of substantially equally sized openings therein, on an inner surface of a CRT faceplate panel 12. A color selection e... | 01/11/2000 |
| 5844355 | Color cathode ray tube and method for manufacturing the same display screen for color A color cathode-ray tube having a good quality of display screen in which a fluorescent dot pattern is formed to have good configuration and positional accuracies. A method for manufacturing the display screen for the cathode-ray tube wherein a correction... | 12/01/1998 |
| 5758221 | Apparatus for photolithographic exposure of cathode ray tube An apparatus for exposing a color cathode ray tube includes a light source producing light for exposing parts of the color cathode ray tube during manufacture of the tube. A slit disposed near the light source permits adjustment of the size of an exposure... | 05/26/1998 |
| 5744270 | Coded marking on an interior surfaces of a CRT faceplate panel and method of making same The novel method for producing a coded marking on a CRT faceplate panel having an exterior and an interior surface with a viewing area surrounded by a periphery and having a luminescent screen with a plurality of different light-emitting phosphors separat... | 04/28/1998 |
| 5671460 | Exposing apparatus In an exposing apparatus for forming a phosphor screen on the inner surface of a panel of a color cathode ray tube by exposure, a photosensitive layer is coated on the inner surface of the panel, and this panel is supported on a support table. Light rays ... | 09/23/1997 |
| 5570145 | Method of forming phosphor screen of color cathode-ray tube and exposure apparatus An exposure apparatus for exposing a resist film coated on the inner surface of a face panel in a color cathode-ray tube through a shadow mask with a number of apertures apparatus comprises an exposure light source having an optical axis coaxial with an a... | 10/29/1996 |
| 5071380 | Method and apparatus for forming patterns of fluorescence on a color CRT A fluorescence pattern forming method and apparatus includes electron beams being irradiated over a face panel, on which a fluorescence layer is formed, to form a fluorescence pattern on a color CRT. The fluorescence layer is formed by coating a slurry of... | 12/10/1991 |
| 4866466 | Method of producing a color picture tube screen A method of producing a color picture tube screen particularly for a high definition tube. In producing a high definition screen light from a point source (S) is directed through a segmented lens (18) and a shadow mask (24) onto a layer of photoresist app... | 09/12/1989 |
| 4707093 | Method and device for illuminating the face plate of a color television tube for formation of the screen Device for illuminating photosensitive light hardenable material for the manufacture of a perforated mask type color cathode ray tube, wherein this device comprises a laser, a light modulator and a deflector to deflect the modulated pencil of light, the l... | 11/17/1987 |
| 4670824 | Light source unit for exposure apparatus A light source unit for an exposure unit is provided. The unit comprises a cylindrical light-emitting tube and a screen sleeve which has a slit in the circumferential direction and with which the tube is covered through water filled therebetween. Accordin... | 06/02/1987 |
| 4634247 | Method for screening line screen slit mask color picture tubes The present invention is an improvement in a method of screening a line screen slit mask color picture tube. Such method includes coating a faceplate panel of the tube with a photosensitive material, inserting a slit shadow mask into the panel and exposin... | 01/06/1987 |
| 4521501 | Method for reducing degradation of an optical image in an exposure lighthouse In the novel method, light passes upwardly from a light source, through an optical element and then is incident upon a photosensitive layer. A transparent optically-neutral sheet, which may be of glass or plastic, closely spaced above the optical element ... | 06/04/1985 |
| 4370036 | System and method for intermittently moving a picture tube panel on a lighthouse The motion of a kinescope panel on a lighthouse is made intermittent by dividing the total excursion distance into intervals. Each interval is segmented into a move time and a dwell time which are expressed as move counts and dwell counts per interval. Th... | 01/25/1983 |
| 4288512 | Method of manufacturing luminescent screens for color picture tubes A rotating diaphragm is used to distribute a predetermined amount of light onto a light-sensitive phosphor layer on a glass faceplate in order to obtain sharp-edged phosphor stripes.... | 09/08/1981 |
| 4256390 | Cathode ray tube screen exposure system The invention relates to an improvement in the photo-exposure system utilized in the forming of stripe-patterned screens on the viewing panels of color cathode ray tubes. The versatile system incorporates an adjustable electronically controlled cam arrang... | 03/17/1981 |
| 4222642 | Exposure device for the manufacture of cathode-ray tubes for displaying colored pictures and cathode-ray tube manufactured by means of such a device An exposure device for the manufacture of cathode-ray tubes for displaying colored pictures comprises an elongate light source shaped so that the amount of light radiated by said light source increases linearly from zero at the ends of the light source to... | 09/16/1980 |
| 4211477 | Light exposing prism system for use in forming phosphor plane of color picture tube A light exposing prism system for use in light exposure process for forming a phosphor plane of a color picture tube is disclosed. The prism system is arranged between a panel of the color picture tube and a linear exposing light source and includes a plu... | 07/08/1980 |
| 4187012 | Method and apparatus for exposure of phosphor screen An exposure method and apparatus for forming phosphor stripes or black matrix stripes on the inner surface of a face plate of a stripe phosphor screen type color picture tube or CRT (cathode-ray tube), in which a single linear light source is used as the ... | 02/05/1980 |
| 4183637 | Method and apparatus for forming phosphor screen of color picture tubes A method of forming a stripe type phosphor screen on inner surface of a face plate of a color picture tube or CRT through the irradiation with light stripes. A single linear light source is employed in combination with a plurality of juxtaposed prisms bet... | 01/15/1980 |
| 4176925 | Laser scanner for photolithography of slotted mask color cathode ray tubes Three scanners are disclosed; common to all is an argon ion laser. In the first two versions, light passes through a telescope, which is provided to expand and collimate the laser beam, through a servo-driven iris whose function is to adjust the length of the ... | 12/04/1979 |
| 4152154 | Method of optically projecting a pattern of substantially circular apertures on a photosensitive layer by rotating light source A window part for a color CRT is coated with a photosensitive layer which is exposed through the apertures of a shadow mask to a rotating light source having a direction of greatest light intensity directed to the center of rotation.... | 05/01/1979 |
| 4122461 | Exposure apparatus and method for manufacturing a cathode ray tube display screen Apparatus for manufacturing cathode ray tube display screens having a face plate with an affixed layer of photosensitive material and an apertured mask spaced from the photosensitive layer and attached to the faceplate includes an exposure chamber having ... | 10/24/1978 |
| 4110760 | Method of manufacturing a cathode ray tube for displaying colored pictures The method of manufacturing a striped screen for a colored cathode-ray tube having a shadow mask with rows of elongate apertures. Adjacent apertures in each row are separated by a solid bridge. The photosensitized screen is exposed to light from a elongat... | 08/29/1978 |
| 4095891 | On-the-fly photoresist exposure apparatus A system for exposing photoresists "on-the-fly" is disclosed. The system incorporates a dye laser having an output pulse duration of less than about 250 nanoseconds to expose the photoresist while the photoresist is moving. Means are provided to synchroni... | 06/20/1978 |
| 4070498 | Method of manufacturing fluorescent screen of color picture tube A method for manufacturing a fluorescent screen of a color picture tube by the steps of forming a coating of opto-hardening material on the inner surface of the faceplate of the panel of a color picture tube and exposing to a light and hardening selective... | 01/24/1978 |
| 4059834 | Light exposing apparatus for forming a phosphor screen of a cathode ray tube A light exposing apparatus for use in forming a phosphor screen of a color cathode ray tube is disclosed in which a control means is connected to a movable platform for relatively moving a light sensitive film mounted on an inner surface of a face panel r... | 11/22/1977 |
| 4053905 | Optical scanning apparatus for photolithography of a color cathode ray tube having an aperture mask In an optical scanning apparatus for photolithographic processing of faceplates intended for color cathode ray tubes, a light beam from a source is first deflected through an angle related to a predetermined angle of incidence that an electron beam in an ... | 10/11/1977 |
| 4053903 | Scanning rate and intensity control for optical scanning apparatus In an optical scanning exposure system for manufacturing cathode ray tubes having a faceplate with an inner surface layer of photosensitive material and an adjacent apertured mask wherein the exposure system includes a light source providing a light beam,... | 10/11/1977 |
| 4053904 | Overlap and overscan exposure control system In an optical scanning exposure system for manufacturing cathode ray tubes having a faceplate with an inner surface layer of photosensitive material and an adjacent apertured mask wherein the exposure system includes a light source providing a light beam,... | 10/11/1977 |
| 4053906 | Control system for an optical scanning exposure system for manufacturing cathode ray tubes In an optical scanning exposure system for manufacturing cathode ray tubes having a faceplate with an inner surface layer of photosensitive material and an adjacent apertured mask wherein the exposure system includes a light source providing a light beam,... | 10/11/1977 |
| 4050081 | Exposure area control for an optical scanning system for manufacturing cathode ray tubes In an optical scanning exposure system for manufacturing cathode ray tubes having a faceplate with an inner surface layer of photosensitive material and an adjacent apertured mask wherein the exposure system includes a light source providing a light beam,... | 09/20/1977 |
| 4027312 | Optical scanning apparatus and method for manufacturing cathode ray tubes An optical scanning apparatus for manufacturing cathode ray tubes having a faceplate with an inner surface layer of photosensitive material and an adjacent apertured mask wherein a light beam from a light source is applied to a deflection device controlle... | 05/31/1977 |
| 4013467 | Method of manufacturing color picture tubes using rotating light attenuator This invention concerns an improvement in manufacturing of color picture tubes wherein photosensitive slurry is applied on the inner surface of a face panel of the tube and dried to form a dried slurry, then a shadow mask is secured to the face panel with... | 03/22/1977 |
| 4001018 | Method for making a stripe screen on a face plate of a cathode ray tube by rotating correction lens In the manufacture of a color cathode ray tube equipped with an in-line electron gun for emitting a central electron beam and a pair of side electron beams, the inner surface of a face plate is exposed to make a stripe screen through a shadow mask using a... | 01/04/1977 |
| 4001842 | Apparatus for making electro-luminescent screens for color cathode-ray tubes of continuous phosphor stripes An electroluminescent screen comprising a plurality of continuous phosphor stripes running the length of the screen formed on a panel for a color cathode-ray tube by applying film containing photosensitive material onto the panel. A shadow mask is attache... | 01/04/1977 |
| 3993487 | Method for manufacture of color television picture tubes using rotating light source The invention discloses a method and apparatus for manufacture of color television picture tubes of the type having a shadow mask with a multiplicity of slots, and more particularly for selectively exposing a light sensitive film uniformly coated over the... | 11/23/1976 |
| 3988777 | Color picture tube A color picture tube, wherein a set of three electron beams emitted from respective three electron-emitting members of an in-line type electron gun, or from respective three electron guns, is projected through slot-shaped apertures of a shadow mask onto a... | 10/26/1976 |
