Flat Tube Type Patents (Class 313/422)
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Patent number: 6686690Abstract: A process for fabricating a flat panel display having a faceplate and a baseplate comprises creating an electric field between the faceplate and the baseplate to temporarily attract the faceplate to the baseplate and attaching the baseplate and faceplate to each other while the electric field is present. Capacitor(s) are formed on the faceplate and/or baseplate of a flat panel display such that a portion of the capacitor(s) is formed on the faceplate and is aligned with the pixel matrix and/or a portion of the capacitor(s) is formed on the baseplate and is aligned with the cathode member. The first and second portions of the capacitor(s) are energized to opposite polarity voltages, and an electric field is generated which attracts and aligns the two portions of the capacitor(s) to each other. When the two portions of the capacitor(s) are aligned and attracted to each other, the pixel matrix and cathode assembly are inherently aligned with each other.Type: GrantFiled: May 1, 2002Date of Patent: February 3, 2004Assignee: Micron Technology, INCInventor: James J. Alwan
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Patent number: 6686678Abstract: A flat panel display having a mesh grid assembly which includes upper and lower spacers integral therein. The flat panel display includes a faceplate and a backplate provided opposing one another with a predetermined gap therebetween to define an exterior of the display. An illuminating assembly is provided in the display, the illuminating assembly realizing predetermined images. A mesh grid is provided between the backplate and the faceplate. A lower spacer is connected to a surface of the mesh grid opposing the backplate to be supported by the backplate. Upper spacers are connected to a surface of the mesh grid opposing the faceplate to be supported by the faceplate. The mesh grid, the lower spacer, and the upper spacers thereby integrally forming a single structural assembly.Type: GrantFiled: February 21, 2003Date of Patent: February 3, 2004Assignee: Samsung SDI Co., Ltd.Inventors: Bong-Kyung Suk, Cheol-Hyeon Chang, Dong-Su Chang
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Patent number: 6674230Abstract: A cathode ray tube includes an electron gun directing electrons away from a faceplate having an electrode biased at screen potential. One or more electromagnets located on or near the rear wall of the tube envelope are biased with dc currents so that the electron beam (three beams in a color tube) is deflected by the magnetic field produced thereby to impinge upon the faceplate. The electron beam is magnetically deflected over a relatively small angle as it exits the electron gun to scan across the faceplate to impinge upon phosphors thereon to produce light depicting an image or information. The electromagnet closest the electron gun is typically biased to produce a strong magnetic field to deflect electrons to the faceplate near to the electron gun. The electromagnets more distant the electron gun produce magnetic fields to direct electrons towards the faceplate, with the electromagnet most distant the electron gun deflecting the electrons to tend to increase the landing angle thereof on the faceplate.Type: GrantFiled: July 13, 2000Date of Patent: January 6, 2004Assignee: Sarnoff CorporationInventors: Joseph Michael Carpinelli, Dennis John Bechis, George Herbert Needham Riddle
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Patent number: 6664729Abstract: A process for fabricating a face plate for a flat panel display such as a field emission cathode type display is disclosed, the face plate having integral spacer support structures. Also disclosed is a product made by the aforesaid process.Type: GrantFiled: July 1, 2002Date of Patent: December 16, 2003Assignee: Micron Technology, Inc.Inventor: Jason B. Elledge
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Patent number: 6656574Abstract: A structure used in the production of a face plate of a display includes a substrate assembly having a conductive surface at a first side thereof, one or more projections (e.g., spacers) extending from the first side of the substrate assembly, and electrophoretically deposited and patternable material (e.g., photoresist), on the conductive surface and adjacent the projections. The patternable material may define openings to the conductive surface for use in deposition of one or more light emitting elements on the conductive surface. In another embodiment, the structure used in the production of a display may comprise a substrate assembly including a conductive surface, one or more nonconductive regions (e.g., one or more phosphor light emitting elements, black matrix material, nonconductive regions have a thickness less than about 15 microns) formed on the conductive surface, and electrophoretically deposited patternable material formed over the conductive surface and the one or more nonconductive regions.Type: GrantFiled: August 16, 2000Date of Patent: December 2, 2003Assignee: Micron Technology, Inc.Inventor: Jefferson O. Nemelka
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Patent number: 6656007Abstract: The present application discloses a method of manufacturing a spacer having an excellent characteristic, and more particularly a method of efficiently manufacturing the spacer. Specifically, in a method of manufacturing a spacer used in an electron beam generating device, there is provided a step of providing a material for forming a film on a film formation surface of a spacer base substance in a state where the spacer base substance is nipped, wherein the material providing step is achieved in a state where the film formation surface is not projected from an end portion of a nipping member for nipping the spacer base substance.Type: GrantFiled: September 18, 2001Date of Patent: December 2, 2003Assignee: Canon Kabushiki KaishaInventors: Masahiro Fushimi, Yasushi Shioya, Yasushi Shimizu
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Patent number: 6653776Abstract: The present invention relates generally to a new dielectric forming metal/ceramic laminate magnet and process thereof. More particularly, the invention encompasses a new process for fabrication of a large area laminate magnet with a significant number of holes, integrated dielectric forming metal plate(s) and electrodes for electron and electron beam control. The present invention also relates to a magnetic matrix display and electron beam source and methods of manufacture thereof.Type: GrantFiled: June 28, 2000Date of Patent: November 25, 2003Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, John U. Knickerbocker, Srinivasa S. N. Reddy, Rao V. Vallabhaneni
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Publication number: 20030197459Abstract: A spacer assembly has first and second spacers standing on first and second surfaces of a plate-like grid to be integral with them. First and second molds each with a plurality of through holes are arranged on the first and second surfaces of the grid to be in tight contact with them. After that, the through holes of the molds are filled with a glass paste containing an ultraviolet-curing binder, and the glass paste is cured by irradiation with ultraviolet rays. Furthermore, while the molds are held in a tight contact state, the glass paste is calcined at a predetermined temperature. Thus, the first and second spacers are integrally formed on the grid surfaces.Type: ApplicationFiled: April 29, 2003Publication date: October 23, 2003Inventors: Shigeo Takenaka, Kumio Fukuda, Masaru Nikaido, Satoshi Ishikawa
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Patent number: 6635985Abstract: 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 deflection anode having reduced capacitance, the use of a polyimide coating for the grid electrodes, the use of a compliant mounting and adjustment for a grid assembly and the provision of an illuminated border on a magnetic matrix display.Type: GrantFiled: October 19, 2001Date of Patent: October 21, 2003Assignee: International Business Machines CorporationInventors: John Stuart Beeteson, Andrew Ramsay Knox, Christopher Carlo Pietrzak
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Patent number: 6630782Abstract: An image display apparatus comprises, in a vacuum container formed by a rear container and a front glass container, a fluorescent layer, an electron emission source, electrodes to control electron beams emitted from the electron emission source. The electrodes are formed by stringing wires on frames made of a resilient material, and the frames on which the wires are strung have respectively pairs of opposing sides that are flat plates formed on the same surface. The electrodes that are free from waviness or warping have high flatness, control the focusing and deflection of the electron beams appropriately, and prevent deviation of the landing positions of the electron beams and errors including error irradiation. Such an image display apparatus can provide excellent images and high resolution.Type: GrantFiled: November 23, 1998Date of Patent: October 7, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshifumi Nakatani, Takatsugu Kurata, Kanji Imai
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Patent number: 6624566Abstract: A vacuum fluorescent display includes a front glass member, substrate, control electrode, plate-like field emission type electron-emitting source, mesh-like electron extracting electrode, and phosphor film. The front glass member has light transmission properties at least partly, and the substrate opposes the front glass member through a vacuum space. The control electrode is formed on an inner surface of the substrate. The plate-like field emission type electron-emitting source with a plurality of through holes is arranged in the vacuum space to be spaced apart from the control electrode. The mesh-like electron extracting electrode is formed between the field emission type electron-emitting source and the front glass member to be spaced apart from the field emission type electron-emitting source. The phosphor film is formed inside the front glass member.Type: GrantFiled: August 28, 2001Date of Patent: September 23, 2003Assignees: Ise Electronics Corporation, Noritake Co., Ltd.Inventors: Sashiro Uemura, Junko Yotani, Takeshi Nagasako, Hiromu Yamada, Hiroyuki Kurachi
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Publication number: 20030173888Abstract: The present invention relates to a flat panel display, and more particularly, to a flat panel display in which the main skeletal structure of a horizontal deflecting electrode is arranged in a horizontal direction to enhance structural strength and the structure of an electrode to which voltage is applied is shaped symmetric to eliminate over-converging of electron beam.Type: ApplicationFiled: March 12, 2003Publication date: September 18, 2003Inventors: Sung Woo Ko, Nam Jae Koh, In Jue Kim
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Patent number: 6614167Abstract: Uniformity of the electron emission characteristics of electron emitting devices is improved. A substrate is formed with row-directional wires and column-directional wires electrically connected to electron emitting devices disposed in a matrix shape and each having electrodes and an electroconductive film. A pseudo row-directional wire is formed at a position X0 between a position X1 of a row-directional wire and a periphery of the substrate, and a pseudo column-directional wire is formed at a position Y0 between a position Y1 of a column-directional wire and a periphery of the substrate. Pseudo electrodes and are electrically connected to the pseudo row-directional wire and pseudo column-directional wire.Type: GrantFiled: February 23, 2000Date of Patent: September 2, 2003Assignee: Canon Kabushiki KaishaInventors: Takeo Ono, Toru Sugeno
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Patent number: 6605893Abstract: A vacuum container for a flat image display apparatus includes a rear substrate having an electron-emitting device mounted thereon, a face substrate arranged to face the rear substrate, having thereon a phosphor emitting light when the electron emitted from the electron-emitting device collides therewith, and an outer frame arranged between the dace substrate and the rear substrate. For this vacuum container, the outer frame is provided with a plurality of frame members. With the structure thus arranged, this vacuum container contributes significantly to manufacturing a light weight, but highly robust flat image display apparatus at lower cost. By providing a plurality of frame members for the outer frame portion, thinner substrates can be utilized with a good sealing mechanism, while securing the sufficient robustness of the edge circumference of the vacuum container.Type: GrantFiled: February 22, 2000Date of Patent: August 12, 2003Assignee: Canon Kabushiki KaishaInventor: Tomokazu Ando
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Publication number: 20030137230Abstract: The subject of the present invention is a glass spacer intended to keep two substrates spaced apart, its glass matrix having a volume electronic conductivity advantageously between 1031 13 and 1031 5 ohm31 1.cm31 1.Type: ApplicationFiled: October 29, 2002Publication date: July 24, 2003Inventors: Dorethee Martin, Rene Gy, Didier Jousse
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Publication number: 20030122472Abstract: A display device equipped with a display unit for displaying information includes a terminal connected to the display unit and adapted to supply a predetermined potential to an electrode in the display unit, an insulator provided outside the display unit and adapted to cover the terminal, and a support structure for supporting the display unit, the display device characterized by having one of the following featuresType: ApplicationFiled: November 29, 2002Publication date: July 3, 2003Inventor: Toshimitsu Kawase
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Publication number: 20030122471Abstract: A display panel is structured for attachment of multiple circuits using a two-dimensional array of contacts. Components, constituting driver circuits, can be mounted to the back of the panel in a central region of the panel rather than at the edges thereof.Type: ApplicationFiled: January 3, 2002Publication date: July 3, 2003Inventors: Robert C. Sundahl, Lawrence A. Booth
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Publication number: 20030117059Abstract: A flat panel display with a black matrix and a fabrication method of the same. The flat panel display has an insulating substrate at the upper part of which a pixel electrode is equipped; an opaque conductive film formed on the front surface of the insulating substrate except at the pixel electrode; an insulating film equipped with a contact hole exposing a portion of the opaque conductive film; and a thin film transistor equipped with a gate electrode, and conductive patterns for source/drain electrodes connected to the opaque conductive film through the contact hole.Type: ApplicationFiled: November 6, 2002Publication date: June 26, 2003Applicant: Samsung SDI Co., Ltd.Inventors: Jae-Bon Koo, Dong-Chan Shin
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Patent number: 6583549Abstract: A spacer assembly has first and second spacers standing on first and second surfaces of a plate-like grid to be integral with them. First and second molds each with a plurality of through holes are arranged on the first and second surfaces of the grid to be in tight contact with them. After that, the through holes of the molds are filled with a glass paste containing an ultraviolet-curing binder, and the glass paste is cured by irradiation with ultraviolet rays. Furthermore, while the molds are held in a tight contact state, the glass paste is calcined at a predetermined temperature. Thus, the first and second spacers are integrally formed on the grid surfaces.Type: GrantFiled: November 23, 2001Date of Patent: June 24, 2003Assignee: Kabushiki Kaisha ToshibaInventors: Shigeo Takenaka, Kumio Fukuda, Masaru Nikaido, Satoshi Ishikawa
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Patent number: 6583556Abstract: A flat-type fluorescent lamp for LCD devices is provided, which makes it possible to narrow the picture-frame area and to widen the emission area and which facilitates their wiring, connection and assembly operations.Type: GrantFiled: November 28, 2001Date of Patent: June 24, 2003Assignee: NEC LCD Technologies, Ltd.Inventors: Toshiya Oishi, Fumihiko Fujishiro, Tsutomu Kanatsu
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Patent number: 6570315Abstract: A field ion display device comprises a field ion emission plate, a microchannel plate and a fluorescent display plate, said plates being parallel to each other, with gaps there between, and being peripherally sealed with a thin gas filled inside. The device is addressed by X-Y encoding. When a signal is applied to an addressed point, positive ions are emitted from the corresponding point on the emission plate based on the signal strength, pass through the microchannel holes, impinge on the wall of the holes, so that the emission of the multifold secondary electrons is multiplied. Said secondary electrons are accelerated by the accelerating electrode, converted into a strong electron flow, extracted from the other side of the holes, again accelerated by the screen electrode, and finally bombard a corresponding pixel on the screen, thereby forming an image. The image has the advantage of good quality, high efficiency and low cost.Type: GrantFiled: February 8, 2001Date of Patent: May 27, 2003Assignee: Beijing New Century De'en S&T Development Co., Ltd.Inventors: En ze Luo, Hong Luo, Wei Luo
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Patent number: 6555957Abstract: In an electron beam apparatus comprising an enclosure in which an electron-emitting device having an electron-emitting region between opposite electrodes is disposed, the electron-emitting device exhibits such a characteristic as that an emission current is uniquely determined with respect to a device voltage. The interior of the enclosure is maintained under an atmosphere effective to prevent structural changes of the electron-emitting device. An image-forming apparatus comprises an enclosure in which an electron source and an image-forming member are disposed, the electron source comprising the above electron-emitting device. An emission current is stable with a very small change in the amount of electrons emitted, a sharp image is produced with high contrast, and gradation control is easily carried out.Type: GrantFiled: January 6, 1998Date of Patent: April 29, 2003Assignee: Canon Kabushiki KaishaInventors: Ichiro Nomura, Masato Yamanobe, Hidetoshi Suzuki, Toshihiko Takeda, Tatsuya Iwasaki
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Patent number: 6554671Abstract: A process is disclosed for anodically bonding an array of spacer columns to one of the inner major faces on one of the generally planar plates of an evacuated, flat-panel video display. The process includes the steps of: providing a generally planar plate having a plurality of spacer column attachment sites; providing electrical interconnection between all attachment sites; coating each attachment site with a patch of oxidizable material; providing an array of unattached permanent glass spacer columns, each unattached permanent spacer column being of uniform length and being positioned longitudinally perpendicular to a single plane, with the plane intersecting the midpoint of each unattached spacer column; positioning the array such that an end of one permanent spacer column is in contact with the oxidizable material patch at each attachment site; and anodically bonding the contacting end of each permanent spacer column to the oxidizable material layer.Type: GrantFiled: August 2, 2000Date of Patent: April 29, 2003Assignee: Micron Technology, Inc.Inventors: James J. Hofmann, Jason B. Elledge
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Patent number: 6541912Abstract: An apparatus for removing contaminants from a display device is disclosed. In one embodiment, an auxiliary chamber is adapted to be coupled to a surface of a display device such that contaminants within the display device can travel from the display device into the auxiliary chamber. A getter is disposed in the auxiliary chamber. The getter is adapted to capture the contaminants once the contaminants travel from the display device into the auxiliary chamber. In other embodiments, the getter is disposed in the border region surrounding the active area of the display.Type: GrantFiled: July 26, 1999Date of Patent: April 1, 2003Assignee: Candescent Technologies CorporationInventors: William C. Fritz, Igor L. Maslennikov, Robert M. Duboc, Jr., Theodore S. Fahlen, George B. Hopple, Christopher J. Curtin, Colin D. Stanners, Petre H. Vatahov, Christopher J. Spindt, Ronald L. Hansen
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Publication number: 20030045199Abstract: This invention has as its object to easily form a low-cost spacer having a low-resistance film (electrode) without using any exhaust device. This invention provides a method of manufacturing a spacer interposed between the first substrate having an image forming member and the second substrate having an electron-emitting device, including the steps of preparing a glass preform, stretching part of the glass preform while heating the glass preform by a heater, and cutting the stretched glass preform into a desired length, wherein the stretching step has the step of feeding the glass preform at a velocity v1 toward the heater, and stretching the glass preform heated by the heater in a direction away from the heater at a velocity v2, and the velocities v1 and v2 have different speeds and satisfy a relation: v1<v2.Type: ApplicationFiled: October 7, 2002Publication date: March 6, 2003Applicant: CANON KABUSHIKI KAISHAInventors: Nobuhiro Ito, Kunihiro Sakai, Masahiro Fushimi
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Patent number: 6528958Abstract: The invention relates to a display device comprising a cathode ray tube including an electron source and an electron beam guidance cavity having an entrance aperture and an exit aperture for concentrating electrons emitted from the cathode in an electron beam. Furthermore, the cathode ray tube comprises a first electrode which is connectable to a first power supply for applying, in operation, an electric field with a first field strength E1 between the cathode and the exit aperture. &dgr;1 and E1 have values, which allow electron transport through the electron beam guidance cavity. Furthermore, a modulating means positioned between the cathode and the exit aperture is present for modulating a beam current to the display screen. According to the invention, the display device is provided with switching means for preventing the electron beam from passing through the exit aperture in a blanking period and for passing the electron beam through the exit aperture in a display period.Type: GrantFiled: November 16, 2001Date of Patent: March 4, 2003Assignee: Koninklijke Philips Electronics N.V.Inventors: Jozef Johannes Maria Hulshof, Frederik Christiaan Gehring
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Publication number: 20030038580Abstract: A cathode ray tube deflection yoke is provided wherein the deflection yoke includes a plurality of deflection coils. One or more of the deflection coils have a non-constant distribution of turns, whereby an electron beam passing through the deflection yoke is deflected by a magnetic field that varies according to different numbers of turns relative to position of electrons of the electron beam between the entrance and exit of the deflection yoke. The non-constant turns distribution may be linear or non-linear, may be monotonic or non-monotonic, and/or may have a positive or negative turns bias, either in whole or in part. The horizontal deflection coil and/or the vertical deflection coil, or both, may have a non-constant turns distribution.Type: ApplicationFiled: March 22, 2002Publication date: February 27, 2003Inventors: Joseph Michael Carpinelli, Michael Denton Grote, John Richard Fields
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Patent number: 6517399Abstract: This invention has as its object to easily form a low-cost spacer having a low-resistance film (electrode) without using any exhaust device. This invention provides a method of manufacturing a spacer interposed between the first substrate having an image forming member and the second substrate having an electron-emitting device, including the steps of preparing a glass preform, stretching part of the glass preform while heating the glass preform by a heater, and cutting the stretched glass preform into a desired length, wherein the stretching step has the step of feeding the glass preform at a velocity v1 toward the heater, and stretching the glass preform heated by the heater in a direction away from the heater at a velocity v2, and the velocities v1 and v2 have different speeds and satisfy a relation: v1<v2.Type: GrantFiled: September 21, 1999Date of Patent: February 11, 2003Assignee: Canon Kabushiki KaishaInventors: Nobuhiro Ito, Kunihiro Sakai, Masahiro Fushimi
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Patent number: 6512329Abstract: The image forming apparatus comprises an electron source having a substrate on which a plurality of electron emitting devices are arranged, a face plate provided with fluorescent substances for emitting light of different colors and serving to form a color image upon irradiation of electrons by the electron emitting devices. Rectangular spacers are arrange between the substrate and the face plate and are fixed to the face plate and contacted to the substrate via soft members.Type: GrantFiled: March 30, 1998Date of Patent: January 28, 2003Assignee: Canon Kabushiki KaishaInventors: Hideaki Mitsutake, Hiroshi Takagi, Yoichi Ohsato, Noriaki Ohguri, Masahiro Fushimi, Kazuo Kuroda, Yoshimasa Okamura
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Patent number: 6509687Abstract: The present invention relates generally to a new electrode forming metal/magnetic-ceramic laminate with through-holes and process thereof. More particularly, the invention encompasses a new process for fabrication of a large area ceramic laminate magnet with a significant number of holes, integrated metal plate(s) and co-sintered electrodes for electron and electron beam control. The present invention also relates to a magnetic matrix display (MMD), and electron beam source, and methods of manufacture thereof.Type: GrantFiled: November 30, 1999Date of Patent: January 21, 2003Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, Raschid J. Bezama, John U. Knickerbocker, Robert W. Pasco
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Publication number: 20030003838Abstract: There is herein disclosed a manufacturing method of a spacer for an electron-beam apparatus which comprises an airtight container, and an electron source. The spacer is arranged in the airtight container. The method comprises the step of heating and drawing a base material of the spacer to form a desired rough state on the surface of the base material, the step of heating and drawing the base material of the spacer to form the desired rough state and an electroconductive film on the surface of the base material, or the step of heating and drawing the base material of the spacer having the rough state on its surface. According to the present invention, the spacer having a surface structure on which can suppress charging can be manufactured at a low cost, and an electron-beam apparatus such as an image-forming apparatus having a sufficient display luminance can also be manufactured.Type: ApplicationFiled: September 3, 2002Publication date: January 2, 2003Applicant: CANON KABUSHIKI KAISHAInventors: Koji Yamazaki, Nobuhiro Ito, Masahiro Fushimi
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Publication number: 20020195925Abstract: In manufacturing an electron beam apparatus, during a step for heating and drawing a substrate if a supporting member for electron beam apparatus, an electroconcductive film is formed on the substrate. Thereby, the manufacturing process step is made simplified. And, also, the electron beam apparatus having the supporting member with less unevenness of shape and characteristics.Type: ApplicationFiled: August 12, 2002Publication date: December 26, 2002Applicant: CANON KABUSHIKI KAISHAInventor: Masahiro Fushimi
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Patent number: 6495975Abstract: A CRT display apparatus including a CRT having an electron gun is disclosed. The electron gun includes a cathode, and a G1 electrode, a G2 electrode and a G3 electrode disposed in that order for drawing electrons from the cathode. The electron gun further includes a modulating electrode disposed between the G2 electrode and the G3 electrode. The CRT display apparatus is provided with a controller for controlling a value of a voltage applied to the modulating electrode in order to suppress or interrupt an electron beam flowing from the cathode to a screen of the CRT.Type: GrantFiled: January 12, 2001Date of Patent: December 17, 2002Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hironobu Yasui, Akinori Heishi
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Patent number: 6489718Abstract: A spacer (140) suitable for use in a flat panel display is formed with ceramic, transition metal, and oxygen. At least part of the oxygen is bonded to the transition metal or/and constituents of the ceramic to form a uniform electrically resistive material having a resistivity of 105-1010 ohm-cm and a secondary electron emission coefficient of less than 2 at 2 kilovolts.Type: GrantFiled: July 18, 2000Date of Patent: December 3, 2002Assignees: Candescent Technologies Corporation, Candescent Intellectual Property Services, Inc.Inventors: Anthony P. Schmid, Christopher J. Spindt, David L. Morris, Theodore S. Fahlen, Yu Nan Sun
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Patent number: 6486597Abstract: A diamond-like carbon-containing material useful as a coating for electronic devices including field emission devices and color television tubes, the coatings having both low secondary electron emission coefficients of less than unity and electrical resistivity tunable over a range of from about 10e−2 to about 10e16.Type: GrantFiled: October 21, 1999Date of Patent: November 26, 2002Assignee: N.V. Bekaert S.A.Inventors: Arvind Goel, Craig Anthony Outten, Chandra Venkatraman, Philip Swab
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Patent number: 6472813Abstract: This invention discloses an image forming apparatus having an electron source on which a plurality of electron-emitting devices are arranged, an image forming member on which an image is formed by electrons emitted by the electron-emitting devices, and a structure for maintaining an interval between the electron source and the image forming member, in which an interval between two electron-emitting devices adjacent to each other via the structure is larger than an interval between two electron-emitting devices adjacent to each other without the mediacy of the structure, and electrons emitted by the electron-emitting devices are deflected toward the structure.Type: GrantFiled: March 25, 1998Date of Patent: October 29, 2002Assignee: Canon Kabushiki KaishaInventors: Hideaki Mitsutake, Hidetoshi Suzuki, Naoto Nakamura
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Patent number: 6448705Abstract: A structure of a vacuum display device is mainly constructed in a vacuum chamber, which is formed by the enclosure of a surface plate, a base plate, and a spacer plate. The surface plate includes a display matrix and a black matrix, the base plate includes an inner surface and an outer surface, while the spacer plate possesses a plurality of recesses in its edges. The required electrode lead wires are disposed on the inner surface of the base plate and are extended out through the recesses. A plurality of fins are disposed on the spacer plates to support the surface plate, the base plate, and the spacer plate, and are located at the black matrices. Additionally, sealing material is used to seal the connections between the surface plate, the base plate, and the spacer plate, and is also used to fill the gaps in the recesses.Type: GrantFiled: September 5, 2000Date of Patent: September 10, 2002Assignee: Delta Optoelectronics, Inc.Inventors: Lai-Cheng Chen, Chun-Hui Tsai, Shih-Hsien Lin, Ruey-Feng Jean
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Patent number: 6426588Abstract: An airtight vessel is formed with restraining a vacuum leak and without increase in the number of steps. Provided is a method for producing an image-forming apparatus comprising the airtight vessel in which a rear plate having an electron-emitting device and a wire connected to the element, and a face plate having an electrode are joined to each other through a jointing material, the method comprising the following steps: (A) a first step of forming a first wire which is a part of the wire and which passes through the joint part to connect the inside of the vessel to the outside, by applying a paste comprising particles of an electric conductor and baking the paste; and (B) a second step of forming a second wire located in the vessel, by applying a paste comprising particles of an electric conductor so as to be connected to the first wire inside the vessel and baking the paste, after formation of the first wire.Type: GrantFiled: November 8, 1999Date of Patent: July 30, 2002Assignee: Canon Kabushiki KaishaInventor: Yoshihiro Yanagisawa
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Publication number: 20020096992Abstract: This invention is an improved processing method and structure for the packaging technique of a large size field emission display. A large size field emission display includes an indium-tin oxides (ITO) conducting glass substrate, which is covered by the first screen mask and the second screen mask defined to a BM layer area, a multi-phosphor layer area and a hollow area. Each area was coated to form an Al layer, which was formed an AlOx layer through a phosphor sintering process. The spacer was fixed in a hollow area of an AlOx layer through an anodic assembling technique. The next plate was fixed on the spacer to accomplish an aligner process.Type: ApplicationFiled: January 24, 2001Publication date: July 25, 2002Inventors: Ming-Chun Hsiao, Cheng-Chung Lee, Yu-Yang Chang
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Patent number: 6420826Abstract: Thin films of Ti—Cr—Al—O are used as a resistor material. The films are rf sputter deposited from ceramic targets using a reactive working gas mixture of Ar and O2. Resistivity values from 104 to 1010 Ohm-cm have been measured for Ti—Cr—Al—O film <1 &mgr;m thick. The film resistivity can be discretely selected through control of the target composition and the deposition parameters. The application of Ti—Cr—Al—O as a thin film resistor has been found to be thermodynamically stable, unlike other metal-oxide films. The Ti—Cr—Al—O film can be used as a vertical or lateral resistor, for example, as a layer beneath a field emission cathode in a flat panel display; or used to control surface emissivity, for example, as a coating on an insulating material such as vertical wall supports in flat panel displays.Type: GrantFiled: January 3, 2000Date of Patent: July 16, 2002Assignee: The Regents of the University of CaliforniaInventors: Alan F. Jankowski, Anthony P. Schmid
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Patent number: 6414428Abstract: The intensity at which electrons emitted by a first plate structure (10) in a flat-panel display strike a second plate structure (12) for causing it to emit light is controlled so as to reduce image degradation that could otherwise arise from undesired electron-trajectory changes caused by effects such as the presence of a spacer system (14) between the plate structures. An electron-emissive region (20) in the first plate structure typically contains multiple laterally separated electron-emissive portions (201 and 202) for selectively emitting electrons. An electron-focusing system in the first plate structure has corresponding focus openings (42P1 and 42P2) through which electrons emitted by the electron-emissive portions respectively pass. Upon being struck by the so-emitted electrons, a light-emissive region (22) in the second plate structure emits light to produce at least part of a dot of the display's image.Type: GrantFiled: April 30, 1999Date of Patent: July 2, 2002Assignees: Candescent Technologies Corporation, Candescent Intellectual Property Services, Inc.Inventors: Donald R. Schropp, Jr., John E. Field, James C. Dunphy, Lawrence S. Pan, David L. Morris, Ronald S. Besser, Christopher J. Spindt
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Patent number: 6392334Abstract: A process for fabricating a flat panel display having a faceplate and a baseplate comprises creating an electric field between the faceplate and the baseplate to temporarily attract the faceplate to the baseplate and attaching the baseplate and faceplate to each other while the electric field is present. Capacitor(s) are formed on the faceplate and/or baseplate of a flat panel display such that a portion of the capacitor(s) is formed on the faceplate and is aligned with the pixel matrix and/or a portion of the capacitor(s) is formed on the baseplate and is aligned with the cathode member. The first and second portions of the capacitor(s) are energized to opposite polarity voltages, and an electric field is generated which attracts and aligns the two portions of the capacitor(s) to each other. When the two portions of the capacitor(s) are aligned and attracted to each other, the pixel matrix and cathode assembly are inherently aligned with each other.Type: GrantFiled: October 13, 1998Date of Patent: May 21, 2002Assignee: Micron Technology, Inc.Inventor: James J. Alwan
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Patent number: 6391504Abstract: A phosphor pattern for a field emission display panel (FED) is provided. The phosphor pattern is formed by a process whichh comprises the steps of: (I) forming (A) a photosensitive resin composition layer containing a phosphor on a substrate to which a conductive layer is formed; (II) selectively irradiating active light to (A) the photosensitive resin composition layer containing a phosphor, for forming a pattern; (III) selectively removing (A) the photosensitive resin composition layer to which active light has been selectively irradiated by development, to form the pattern; and (IV) calcining the pattern to remove an unnecessary portion, to form the phosphor pattern. Also provided ar this process for forming the phosphor pattern, a photosensitive element for a FED and a field emission display panel.Type: GrantFiled: May 22, 1998Date of Patent: May 21, 2002Assignee: Hitachi Chemical Co., Ltd.Inventors: Seiji Tai, Yoshiyuki Horibe, Hiroyuki Tanaka, Takeshi Nojiri, Kazuya Satou, Naoki Kimura, Mariko Shimamura
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Patent number: 6388375Abstract: A backplate for a display panel, a display panel embodying such backplate, and methods for producing the backplates. The backplate comprises a thin layer of a glass-ceramic that receives the active display material on its surface, the glass-ceramic being sufficiently refractory to withstand a processing temperature of at least 850° C., that has a coefficient of thermal expansion over about 40×10−7/° C., but not over about 100×10−7/° C., and that has a crystal phase selected from spinel, enstatite, wollastonite, diopside, mullite, alpha-quartz, sapphirine, forsterite, beta-quartz, other alkaline earth metal silicates and aluminosilicates and mixtures of these crystal phases.Type: GrantFiled: March 1, 2000Date of Patent: May 14, 2002Assignee: Corning IncorporatedInventors: Linda R. Pinckney, Ronald L. Stewart, Donald M. Trotter, Jr.
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Patent number: 6384527Abstract: A flat panel display is disclosed which includes a faceplate with a faceplate interior side, and a backplate including a backplate interior side in an opposing relationship to the faceplate interior side. Side walls are positioned between the faceplate and the backplate. The side walls, faceplate and backplate form an enclosed sealed envelope. A plurality of phosphor subpixels are positioned at the faceplate interior side. A plurality of field emitters are positioned at the backplate interior side. The field emitters emit electrons which strike corresponding phosphor subpixels. A plurality of scattering shields surround each phosphor subpixel and define a subpixel volume. The scattering shields reduce the number of scattered electrons exiting from their corresponding subpixel volume. This reduces the number of scattered electrons from charging internal insulating surfaces in the envelope, as well as striking the non-corresponding phosphor subpixels.Type: GrantFiled: November 20, 1995Date of Patent: May 7, 2002Assignee: Candescent Technologies CorporationInventors: Christopher J. Spindt, John E. Field, Duane A. Haven
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Patent number: 6377002Abstract: Strips of field emitters arranged in rows overlap grid electrodes when viewed in the viewing direction to define pixel dots. Scanning electrical voltages are applied to the rows of field emitters to perform scanning and data potentials are applied to the grid electrodes to control the brightness of the display. Potentials applied to the grid electrodes also focus the electrons from the field emitters. A metal mesh with grid electrodes fabricated thereon to form an integrated structure greatly simplifies the manufacture of the display.Type: GrantFiled: October 25, 1996Date of Patent: April 23, 2002Assignee: Pixtech, Inc.Inventors: Shichao Ge, Lap Man Yam, Charles S. Leung, Xi Huang
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Patent number: 6373176Abstract: A rim made of glass or ceramic material is attached to an alloy sheet with through holes therein at an elevated temperature. Voltages applied to the sheet may be used for focusing electrons passing there through onto a phosphor layer for displaying images. An optional insulating layer is formed on the sheet and optional grid electrodes are formed on the insulating layer for addressing and focusing. Upon cooling, the rim maintains the alloy sheet in tension. Holes in the alloy sheet and the grid electrodes are therefore maintained in proper alignment with cathodes and pixel dots despite temperature variations. The rim also forms a portion of the side wall of the display device, so that once the rim has been aligned with and attached to a cathode plate and face plate, the accurate alignment process has been completed and the assembly of the device is much simplified.Type: GrantFiled: August 21, 1998Date of Patent: April 16, 2002Assignee: Pixtech, Inc.Inventors: Shichao Ge, Charles S. Leung, Lap Man Yam
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Patent number: 6370019Abstract: A plurality of sealing methods may be used either alone or in combination with each other to seal an electronic display structure. The display module includes a first substrate having a plurality of column electrodes. Each of a plurality of portions of a display material are coupled to one of the plurality of column electrodes and to one of a plurality of row electrodes. A pixel seal may be formed over the display material to encapsulate the display material. An area seal may be formed upon the first substrate to encapsulates the row electrodes, the column electrodes, and the portions of display material. A bead seal may be formed around the perimeter of the first substrate to couple it to a second substrate while sealing the internal display material. An edge seal may be formed by a banded structure spanning from the first substrate to the second substrate and extending around the perimeter of the substrates.Type: GrantFiled: February 16, 1999Date of Patent: April 9, 2002Assignee: Sarnoff CorporationInventors: Dennis Lee Matthies, Zilan Shen, Roger Green Stewart, James Harold Atherton
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Publication number: 20020034916Abstract: The present application discloses a method of manufacturing a spacer having an excellent characteristic, and more particularly a method of efficiently manufacturing the spacer. Specifically, in a method of manufacturing a spacer used in an electron beam generating device, there is provided a step of providing a material for forming a film on a film formation surface of a spacer base substance in a state where the spacer base substance is nipped, wherein the material providing step is achieved in a state where the film formation surface is not projected from an end portion of a nipping member for nipping the spacer base substance.Type: ApplicationFiled: September 18, 2001Publication date: March 21, 2002Inventors: Masahiro Fushimi, Yasushi Shioya, Yasushi Shimizu
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Patent number: 6356013Abstract: A flat panel display and a method for forming a flat panel display. In one embodiment, the flat panel display includes a wall which is held in place by a structure formed either on the faceplate or on the backplate. In one embodiment the supporting structure is formed by two adjacent walls that form a slot which mechanically restrains the wall. In another embodiment a slot is formed within the faceplate and the walls of the slot mechanically restrain the wall. In one embodiment wall segments are inserted into supporting structures that mechanically restrain each wall segment. In another embodiment a UV curable or a heat curable adhesive is used to maintain walls in their proper alignment and position. In yet another embodiment a conductive material is melted so as to bond conductive lines located on the wall and conductive lines located on the faceplate.Type: GrantFiled: September 16, 1999Date of Patent: March 12, 2002Assignee: Candescent Intellectual Property Services, Inc.Inventors: Chungdee Pong, John D. Porter, Theodore S. Fahlen, Christopher J. Curtin, Robert G. Neimeyer, Paul N. Ludwig