Coating Or Shielding Patents (Class 313/479)
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Patent number: 7304250Abstract: An electromagnetic shielding sheet 1 includes: a transparent base 11, and at least an adhesive layer 13, an antirust layer 25A and a mesh metal layer 21 formed on one of the surfaces of the base. A blackened layer 23A is sandwiched between the mesh metal layer 21 and the antirust layer 25A. At least openings 105 of the mesh metal layer 21 are filled up with a resin such that the mesh metal layer 21 has a substantially flat surface.Type: GrantFiled: August 6, 2003Date of Patent: December 4, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventors: Fumihiro Arakawa, Yasuhiko Ishii, Daisuke Hashimoto, Yukihiro Kyoden, Eiji Ohishi
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Patent number: 7298076Abstract: A bezel-less display is disclosed that includes an electronic display device and a cover. The electronic display device has an image-displaying portion and another portion adjacent the image-displaying portion along at least one side. The cover is positioned adjacent the electronic display device and includes a first portion positioned adjacent the image-displaying portion of the display device and a second portion positioned adjacent the other portion of the display device. The optical properties of the first and second portions of the cover are selected to present an appearance of a uniform cover without a bezel when the display device is not displaying an image. The optical properties of the first portion are also selected to transmit images displayed on the image-displaying portion. Preferably, the optical properties of the second portion are selected to mask the other portion of the display device.Type: GrantFiled: March 21, 2005Date of Patent: November 20, 2007Assignee: Bloomberg LPInventors: Helmars E. Ozolins, Masamichi Udagawa
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Patent number: 7297386Abstract: An antireflection structure (10) comprises a base (1), and a finely roughened antireflection part (2) formed in a surface of the base (1). The finely roughened antireflection part (2) includes a plurality of projections and depressions defined by the projections. The projections are distributed such that PMAX??MIN, where PMAX is the biggest one of distances between tips (2t) of the adjacent projections and ?MIN is the shortest one of wavelengths of visible light rays in a vacuum. The sectional area of each projection in a plane parallel to the surface of the base (1) increases continuously from the tip (2t) toward the bottom (2b) of the depression adjacent to the projection. The shape (2Mt) of a tip part (Mt) of each projection in a plane perpendicular to the surface of the base (1) is sharper than the shape (2Mb) of a bottom part (Mb) of each depression in the same plane vertical to the surface of the base (1).Type: GrantFiled: February 20, 2003Date of Patent: November 20, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventors: Toshiyuki Suzuki, Arimichi Ito, Nobuhito Toyama
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Patent number: 7256536Abstract: Cathode-ray tube comprising a glass envelope composed of a substantially rectangular faceplate, of a flared rear part and of a substantially cylindrical neck, the flared part including an anode button for receiving the high voltage, the outer surface of the said flared part being partially covered by an electrically conducting layer, adhering to the said outer surface, the electrically conducting layer being a metallic layer composed mainly of aluminium. This layer makes it possible to improve the image distortions due to the drop in the high voltage during current spikes delivered by the high voltage.Type: GrantFiled: December 23, 2003Date of Patent: August 14, 2007Assignee: Thomson LicensingInventors: Gildo Di Domenico, Paolo Romani, Ivano Domenicali
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Patent number: 7202593Abstract: A steel sheet for an inner magnetic shield has a ratio of the anhysteretic magnetic permeability in the rolling direction to the anhysteretic magnetic permeability in the transversal direction, which is not higher than 0.7 or not lower than 1.4, preferably not higher than 0.5 or not lower than 2.0. A higher value of the two anhysteretic magnetic permeability values in the rolling direction and in the transversal direction is not lower than 18000. The inner magnetic shield formed of the particular steel sheet has a substantially truncated pyramid body which has a pair of short side members of a screen and a pair of long side members of a screen. The short side members are joined to the long side members at edge portions of the truncated pyramidal inner magnetic shield. The direction, in which the anhysteretic magnetic permeability of the steel sheet is the higher value, corresponds to the horizontal plane direction of the short side member.Type: GrantFiled: February 18, 2003Date of Patent: April 10, 2007Assignee: JFE Steel CorporationInventors: Hideki Matsuoka, Reiko Sugihara, Kenji Tahara, Noriko Kubo, Keisuke Fukumizu, Teruo Takeuchi, Hiroaki Kato
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Patent number: 7193779Abstract: Disclosed is a front filter in a plasma display panel (PDP), in which the front filter comprises an impact-absorbing layer attached to a front surface of the panel and composed of one of EVA, acrylic polymers, and PVC to be able to absorb external impacts.Type: GrantFiled: February 12, 2004Date of Patent: March 20, 2007Assignee: LG Electronics Inc.Inventors: Kyung Ku Kim, Hong Rae Cha, Young Sung Kim, Myeong Soo Chang, Byung Gil Ryu
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Patent number: 7183499Abstract: An electromagnetic wave shielding sheet includes a transparent substrate 11 and a metal layer 15 provided on one surface of the transparent substrate 11 through an adhesive layer 13. The metal layer 15 includes a mesh part 103 and a frame part 101 surrounding the mesh part 103. The frame part 101 includes at least one transparent part 105 that is a metal-layer-free area. Preferably, the transparent part 105 includes a metallic portion 105a in a geometric pattern. Light transmitted by or reflected from the transparent part 105 is detected, thereby the transparent part 105 can be used as a register mark for detecting the position of the mesh part 103.Type: GrantFiled: June 15, 2004Date of Patent: February 27, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventors: Daisuke Hashimoto, Fumihiro Arakawa, Yasuhiko Ishii, Yukihiro Kyoden, Eiji Oishi
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Patent number: 7166957Abstract: The invention is a cathode-ray tube (CRT) and method of manufacturing the CRT having a contrast enhancing coating on the exterior surface of the viewing faceplate. The contrast enhancing coating reduces the transmission of faceplate of the CRT by about 50%. The coating also yields gloss values in the range of 70 to 90. The manufacture comprises the steps of preparing an intermediate formulation containing a hydrolyzed organic silicate, diluting the intermediate formulation with an organic solvent and adding a contrast enhancing material to provide a final formulation, spraying the final formulation onto the faceplate to form the coating, heating the faceplate to cure the coating, and rinsing the coating, thereby forming a stable contrast enhancing coating on the faceplate.Type: GrantFiled: August 14, 2002Date of Patent: January 23, 2007Assignee: Thomson LicensingInventors: Donald Walter Bartch, James Francis Edwards
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Patent number: 7148615Abstract: The present invention enhances the quality of displayed images by enhancing the uniformity of the total transmissivity over the whole surface of a panel having a wavelength selective absorption layer imparted with gradation thus reducing the color difference of the body color. A transmissivity ratio between a peripheral portion and a central portion of a panel formed of tinted glass which differs in wall thickness between the peripheral portion and the central portion of a screen before the surface treatment is set to a value not greater than 60%, and the body color of the panel is set such that L*=30 to 40, a*=?8.5 to 1.5, b*=?5 to 5 at the center portion, L*=13.5 to 23.5, a*=?7.5 to 2.5, b*=?6.5 to 3.5 at the peripheral portion, where color difference is set to ?a*b*?3, and the film formed on the outer surface of the panel is constituted of a wavelength selective absorption layer and a conductive layer which is formed over the wavelength selective absorption layer.Type: GrantFiled: February 10, 2004Date of Patent: December 12, 2006Assignee: Hitachi Displays, Ltd.Inventors: Toshio Tojo, Norikazu Uchiyama
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Patent number: 7148617Abstract: A reflection type flat cathode-ray tube enhanced in quality of display image, and its manufacturing method are presented. A flat cathode-ray tube is composed by forming a grid layer, a reflective layer, and a fluorescent layer sequentially at the inner side of a screen panel. The reflective layer is preferably formed at the outer side of the circumference of the fluorescent layer. On a transfer substrate, a transfer foil laminating at least a fluorescent layer, a reflective layer, and a grid layer in this order is prepared, the grid layer side of the transfer foil is heated, pressed and adhered to the inner side of a screen panel, a transfer substrate is peeled off, and a fluorescent screen composed of the fluorescent layer, reflective layer, and grid layer is transferred.Type: GrantFiled: April 6, 2005Date of Patent: December 12, 2006Assignee: Sony CorporationInventors: Jun Miura, Koichi Furui
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Patent number: 7132169Abstract: Disclosed is a composition for forming a coating layer, and a flat monitor panel for a display device comprising the coating layer. The composition for forming the coating layer comprises a metallic oxide particulate, a coloring agent, and a silane coupling agent. The metallic oxide particulate is at least one metallic oxide selected from the group consisting of indium tin oxide (ITO), antimony tin oxide (ATO), aluminum zinc oxide (AZO), SnO2, In2O3, and Sb2O3. The coloring agent includes an organic or an inorganic pigment, or a metal complex.Type: GrantFiled: September 9, 2002Date of Patent: November 7, 2006Assignee: Samsung SDI Co., Inc.Inventors: Ji-Won Lee, Yoon-Ho Jun, Jae-Man Choi, Sang-Min Lee
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Patent number: 7119858Abstract: A front filter being attached to a front surface of a flat panel display device includes a NIR (near infrared ray) blocking film for blocking the emission of near infrared rays to outside; an EMI (electromagnetic interference) shielding film for absorbing electromagnetic waves and for preventing the electromagnetic waves from being emitted to outside; a glass formed on a front surface of the EMI shielding film; and an antireflection coating for preventing incident rays from outside from reflecting back to the outside, in which the EMI shielding film includes a mesh unit formed of conductive meshes that are intersected with each other; and a mesh frame for surrounding the mesh unit to support the mesh unit and to define an effective display area on a screen.Type: GrantFiled: April 1, 2004Date of Patent: October 10, 2006Assignee: LG Electronics Inc.Inventors: Kyung Ku Kim, Hong Rae Cha, Young Sung Kim, Myeong Soo Chang, Byung Gil Ryu
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Patent number: 7074100Abstract: A method for forming a metal back-attached phosphor screen comprises the step of dissolving/removing or rendering highly resistant a specified area of a metal film formed on a phosphor screen by using a liquid that dissolves or oxidizes the metal film. After part of a metal film is removed or rendered highly resistant, an insulating or highly resistant inorganic material may be applied to the remaining ends thereof. Alternatively, an insulating or highly-resistant inorganic material may be added to a dissolving or oxidizing liquid to dissolve/remove or render highly resistant a metal film, and at the same time ends of the metal film are coated with the inorganic material. In this metal back-attached phosphor screen, electron emission elements and the phosphor screen are protected against destruction/deterioration by discharging.Type: GrantFiled: May 9, 2002Date of Patent: July 11, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Takeo Ito, Takashi Nishimura, Tsuyoshi Oyaizu, Hajime Tanaka
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Patent number: 6992431Abstract: An image display device having a vacuum envelope which has a light transmissible panel, a funnel and a neck, its inside held vacuum, a phosphor layer is formed on the inside surface of the light transmissible panel, an electron gun is disposed within the neck. An antistatic film which contains high-resistance fine particles having a specific resistivity of 106 to 109 ?·cm is formed on inside wall of the neck. The image display device is free from deterioration of display characteristics caused by a change of the track of electrons emitted by the application of voltage, a spark in a tube, or a leakage current.Type: GrantFiled: September 11, 2001Date of Patent: January 31, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Takeo Ito, Tsuyoshi Oyaizu, Akira Mikami, Hitoshi Tabata
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Patent number: 6987350Abstract: An inner shield for a cathode ray tube includes a screen opening and an electron gun opening through which electron beams pass, and a main body including a pair of long sections and a pair of short sections interconnected to form the screen opening and the electron gun opening. A cathode ray tube includes the inner shield. Each of the short sections includes a cutaway section having a pair of first cutaway sections formed starting from the electron gun opening and extending at a predetermined angle for a predetermined distance toward the screen opening, and a second cutaway section formed starting from where the first cutaway sections end and extending inwardly toward the screen opening, the second cutaway section being formed to extend past imaginary lines formed from where the first cutaway sections end to a furthermost inward point of the second cutaway section, that is, the point of the second cutaway section closest to the screen opening.Type: GrantFiled: August 12, 2003Date of Patent: January 17, 2006Assignee: Samsung SDI Co., Ltd.Inventors: Jong-Heon Kim, Eung-Suk Lee
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Patent number: 6987351Abstract: A flat panel for a cathode ray tube of the present invention includes a faceplate having a useful screen for displaying an image; a skirt portion which extends from a perimeter of the faceplate and has a seal edge; and a blend round portion joining the faceplate with the skirt portion, wherein when an average outer curvature radius R1 and an average inner curvature radius R2 of the faceplate are equal to or greater than 10,000 mm, an overall height H of the faceplate satisfies a following relationship: T1+10?H?D×0.12 where T1 and D are a face center thickness of the faceplate and a diagonal length of the useful screen, respectively.Type: GrantFiled: August 4, 2003Date of Patent: January 17, 2006Assignee: Samsung Corning Co., Ltd.Inventor: Kyoung Mun Choo
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Patent number: 6958574Abstract: An image display device for providing antireflection and electromagnetic shielding effects is disclosed. The device has a faceplate, a coating panel made of glass, a plurality of coating layers laminated on one surface of the coating panel for performing antireflection and electromagnetic shielding functions, and an adhering layer for adhering the coating panel to the faceplate. The adhering layer may be an ultraviolet curable resin.Type: GrantFiled: November 27, 2000Date of Patent: October 25, 2005Assignee: Samsung SDI Co., Ltd.Inventors: Chong-In Chung, Chang-Seok Rho, Jong-Hwan Park, Tae-Il Yoon, Chang-Sub Lee
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Patent number: 6946785Abstract: An oxide composite particle of the present invention is composed of at least one fine gold particle contained in a matrix of an oxide particle or at least one fine gold particle supported fixedly on the surface of an oxide particle, and absorbs a visible light having a specific wavelength. A phosphor of the invention has a thin film which is composed of such oxide composite particles on the surface of a phosphor particle of red or the like. The phosphor can be obtained by mixing phosphor particles into a dispersion of gold colloid/oxide composite particles, agitating the resultant mixture, and taking out the precipitated phosphor particles, followed by drying. Further, in a color filter of the invention, a filter layer of at least one color formed on an inner surface of a panel is a thin film composed of the above-described oxide composite particles.Type: GrantFiled: April 6, 2001Date of Patent: September 20, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Takeo Ito, Koji Washiyama, Tsuyoshi Oyaizu, Hiroshi Makihara, Toshimi Fukui
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Patent number: 6940226Abstract: Disclosed is a plasma display apparatus in which film-type front filter is connected. A plasma display apparatus of the present invention includes a panel formed by attaching an upper substrate to a lower substrate, an front filter attached to an entire surface of the panel and including extensions extending by predetermined lengths from edges of the panel in omni-directions, a back cover formed on a rear surface of the chassis base, and a filter supporter for electrically connecting the extensions to the back covers. The filter supporter is connected to the compass.Type: GrantFiled: March 31, 2004Date of Patent: September 6, 2005Assignee: LG Electronics Inc.Inventors: Young Sung Kim, Kyung Ku Kim, Hong Rae Cha, Myeong Soo Chang, Byung Gil Ryu
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Patent number: 6924591Abstract: An implosion preventing band for a cathode ray tube includes a main band formed around an outer surface of a skirt of a face panel, and including a pair of long sides provided on opposite sides of the skirt in a direction corresponding to long sides of a screen, a pair of short sides provided on opposite sides of the skirt in a direction corresponding to short sides of a screen, and corners formed between the long sides and the short sides to interconnect the same; and degaussing coil supports formed raised from the main band on long and short sides of the main band, and each having formed one or more openings that allow passage in a direction of a width of the main band, a degaussing coil(s) being supported using the openings. A plurality of the openings is formed continuously in the degaussing coil supports in a circumferential direction of the main band.Type: GrantFiled: March 31, 2003Date of Patent: August 2, 2005Assignee: Samsung SDI Co., Ltd.Inventors: Tok-Chin Woo, Hyung-Seok Oh, Woo-Seok Yang
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Patent number: 6922012Abstract: A panel (2) of a vacuum envelope includes a substantially rectangular effective portion (8) having a substantially flat outer surface and also having a phosphor screen 1 formed on an inner surface, and a skirt portion (9) provided along a peripheral part of the effective portion and extended substantially perpendicularly to the effective portion. A funnel (3) is bonded to the skirt portion. A reinforcing band for fastening the skirt portion is attached round an outer surface of the skirt portion. When a distance in a direction of the tube axis from a bonding part between the panel and the funnel to an end of the reinforcing band on the outer surface side of the effective portion is represented by a and a distance in the direction of the tube axis from the bonding part to a central position of the outer surface of the effective portion is represented by h, the reinforcing band is arranged to satisfy a ?0.9h.Type: GrantFiled: February 15, 2000Date of Patent: July 26, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Takuya Mashimo, Norio Shimizu, Masatsugu Inoue
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Patent number: 6919678Abstract: A bezel-less display is disclosed that includes an electronic display device and a cover. The electronic display device has an image-displaying portion and another portion adjacent the image-displaying portion along at least one side. The cover is positioned adjacent the electronic display device and includes a first portion positioned adjacent the image-displaying portion of the display device and a second portion positioned adjacent the other portion of the display device. The optical properties of the first and second portions of the cover are selected to present an appearance of a uniform cover without a bezel when the display device is not displaying an image. The optical properties of the first portion are also selected to transmit images displayed on the image-displaying portion. Preferably, the optical properties of the second portion are selected to mask the other portion of the display device.Type: GrantFiled: November 20, 2002Date of Patent: July 19, 2005Assignee: Bloomberg LPInventors: Helmars E. Ozolins, Masamichi Udagawa
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Patent number: 6906455Abstract: A reflection type flat cathode-ray tube enhanced in quality of display image, and its manufacturing method are presented. A flat cathode-ray tube is composed by forming a grid layer, a reflective layer, and a fluorescent layer sequentially at the inner side of a screen panel. The reflective layer is preferably formed at the outer side of the circumference of the fluorescent layer. On a transfer substrate, a transfer foil laminating at least a fluorescent layer, a reflective layer, and a grid layer in this order is prepared, the grid layer side of the transfer foil is heated, pressed and adhered to the inner side of a screen panel, a transfer substrate is peeled off, and a fluorescent screen composed of the fluorescent layer, reflective layer, and grid layer is transferred.Type: GrantFiled: June 27, 2001Date of Patent: June 14, 2005Assignee: Sony CorporationInventors: Jun Miura, Koichi Furui
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Patent number: 6902815Abstract: There is provided a coating liquid for forming a colored transparent conductive film using ruthenium in a fine particle form, which has a satisfactory electromagnetic wave shielding effect, which is excellent in transparency, chemical resistance, and abrasion resistance, and which achieves a neutral transmitted color tone. There are provided a substrate with the colored transparent conductive film and a method for its production, and a display device having the substrate as a front panel. A coating liquid for forming a colored transparent conductive film is one characterized by containing noble metal-supporting ruthenium in a fine particle form wherein a noble metal except for ruthenium is supported in a fine particle form on ruthenium. A method for making the noble metal supported in the fine particle form is a method of adding a reducing agent into a dispersing liquid containing ruthenium particles and then adding thereinto a solvent containing a compound of a noble metal.Type: GrantFiled: December 4, 2003Date of Patent: June 7, 2005Assignee: Asahi Glass Company, LimitedInventors: Satoshi Kashiwabara, Satoshi Mototani
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Patent number: 6881357Abstract: Provided a transparent conductive layer and an image display device employing the transparent conductive layer. The transparent conductive layer includes a conductive layer containing a metal oxide and a protective layer formed on the conductive layer. The protective layer contains a hydrolyzed and polycondensated product of silicon alkoxide and at least one of mercapto compound and its hydrolyzed and polycondensated product.Type: GrantFiled: February 12, 2002Date of Patent: April 19, 2005Assignee: Samsung SDI Co., Ltd.Inventors: Sang-min Lee, Ji-won Lee, Kang-il Seo, Jae-man Choi
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Patent number: 6861795Abstract: A funnel for a cathode ray tube has a relationship 0<?(z)<d in an arbitrary cross section P(z) parallel with a plane including an open end portion, where ?(z) is an angle (°) defined between a line and a major axis (LA) of the funnel, the line being connecting an outermost part D(z) on at least one of an outer surface and an inner surface of the body portion and a center axis (C) of the funnel, and d is an angle (°) defined between a diagonal axis (DA) of the funnel and the major axis (LA).Type: GrantFiled: April 17, 2002Date of Patent: March 1, 2005Assignee: Nippon Electric Glass Co., Ltd.Inventor: Hiroshi Kakigi
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Patent number: 6858977Abstract: The cathode-ray tube according to the present invention has on the inner surface of the funnel section of the body thereof a laminated layer comprising a first layer of black material, a metal backing layer and a second layer of black material. According to the configuration of the cathode-ray tube of the present invention, stray light reflected within the body of the cathode-ray tube is absorbed by the first layer of black material on the inner surface of the funnel, while stray light reflected off the inner surface of the funnel is absorbed by the second layer of black material. This makes it possible to reduce the amount of stray light incident upon the effective screen area of the panel section.Type: GrantFiled: May 23, 2002Date of Patent: February 22, 2005Assignee: Sony CorporationInventors: Tsuneharu Nomura, Norihiro Ohse, Tomohiko Abe, Michihisa Yano, Seiji Kawaberi, Hisashi Kimura, Tsutomu Arai
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Patent number: 6856080Abstract: A vacuum tube having its anode/collector coated with carbonized resin plus pyrocarbon material to reduce out-gassing and secondary electron emission and the method of coating the anode/collector.Type: GrantFiled: August 28, 2001Date of Patent: February 15, 2005Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Donald A. Shiffler, Jr., Michael D. Haworth
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Patent number: 6856082Abstract: This is a cathode ray tube having a panel provided with a colored layer on an outer surface of a face portion, wherein an emission luminance ratio is 75% or higher in a lowest part relative to a highest part, and a diffuse reflectance ratio is 90% or higher in a lowest part relative to a highest part in an image display area of the face portion. Due to this configuration, a cathode ray tube with a natural appearance can be obtained in which a luminance difference or a contrast difference is not perceived in the entire area of the face portion.Type: GrantFiled: July 11, 2001Date of Patent: February 15, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Atsushi Suzuki, Masahiro Yamamura, Yasunori Miura
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Patent number: 6844667Abstract: A panel for a cathode ray tube having an inner surface with predetermined roughness, including a plurality of black matrix layers formed on the inner surface and a phosphor layer composed of red, green and blue phosphors between the black matrix layers, and the phosphor layer and the black matrix layer are formed on the inner surface of the panel after forming a transparent dielectric film, can prevent degradation of brightness and color purity of a screen caused as a result of grinding process which gives roughness to an inner surface of the panel in order to prevent mirror surface reflection on the inner surface of the panel caused by external light.Type: GrantFiled: April 2, 2003Date of Patent: January 18, 2005Assignee: Lg. Philips Displays Korea Co., Ltd.Inventors: Jong-Tae Choi, Bum-Sik Seo
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Publication number: 20040263052Abstract: A cathode ray tube comprises a panel of which outer surface is substantially flat and inner surface has a designated radius of curvature, a shadow mask coupled to the panel, the shadow mask having electron beam passing holes, and a reinforcing band mounted on the outer surface of the panel, wherein a diagonal size of an effective surface of the panel is in the range of 571-610 mm, and a thickness at a central portion of the panel is in the range of 9.5-12.4 mm.Type: ApplicationFiled: November 10, 2003Publication date: December 30, 2004Inventors: Gyung Rae Kim, Sung Han Jung
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Publication number: 20040263051Abstract: A cathode ray tube comprises a panel of which outer surface is substantially flat and inner surface has a designated radius of curvature, a shadow mask coupled to the panel, the shadow mask having electron beam passing holes, and a reinforcing band mounted on the outer surface of the panel, wherein a diagonal size of an effective surface of the panel is in the range of 397-463 mm, and a thickness of a diagonal end of the effective surface of the panel is in the range of 20-23 mm.Type: ApplicationFiled: November 10, 2003Publication date: December 30, 2004Inventors: Gyung Rae Kim, Yong Hoon Choi
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Patent number: 6833664Abstract: Implosion proof structure in a flat cathode ray tube having a panel to which the atmospheric pressure is exerted as the flat cathode ray tube is evacuated, including implosion proof means strapped or coated on an outer circumferential surface of a funnel in the vicinity of the panel, thereby enhancing an implosion proof strength of the flat cathode ray tube.Type: GrantFiled: December 8, 2000Date of Patent: December 21, 2004Assignee: LG Electronics Inc.Inventors: Sang Yoon Park, In Joo Kim
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Patent number: 6833665Abstract: A flat display panel comprising a flat display panel main body, and a front protective plate which comprises an antireflection layer, a translucent electrically conductive layer, containing a metal having an electromagnetic wave shielding property and a near infrared ray shielding property, a highly rigid transparent substrate made of a tempered glass or a semi-tempered glass and an adhesive layer laminated in this order, bonded to the viewer's side surface of the flat display panel main body by means of the adhesive layer.Type: GrantFiled: July 22, 2002Date of Patent: December 21, 2004Assignee: Asahi Glass Company, LimitedInventors: Hiroshi Wachi, Ken Moriwaki, Takeomi Miyako
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Publication number: 20040245909Abstract: A cathode ray tube comprises a panel of which outer surface is substantially flat and inner surface has a designated radius of curvature, a shadow mask coupled to the panel, the shadow mask having electron beam passing holes, and a reinforcing band mounted on the outer surface of the panel, wherein a diagonal size of an effective surface of the panel is in the range of 749-788 mm, and a thickness at a central portion of the panel is in the range of 10.5-13.5 mm.Type: ApplicationFiled: November 10, 2003Publication date: December 9, 2004Inventors: Gyung Rae Kim, Sung Han Jung
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Patent number: 6819040Abstract: A composition and method of forming an internal neutral density filter on a luminescent screen assembly of a cathode ray tube (CRT) is disclosed. The luminescent screen assembly is formed on an interior surface of a glass faceplate panel of the CRT tube. The luminescent screen assembly includes a patterned light-absorbing matrix that defines three sets of fields corresponding to one of a blue region, a green region and a red region. An internal neutral density filter is formed on the light-absorbing matrix. An array of blue, green and red color phosphors is formed on the internal neutral density filter corresponding to one of the blue region, the green region and the red region defined in the light-absorbing matrix. The internal neutral density filter has a composition including a red pigment, a blue pigment and at least one non-pigmented oxide particle.Type: GrantFiled: February 27, 2003Date of Patent: November 16, 2004Assignee: Thomson Licensing S. A.Inventors: Farzad Parsapour, Bhanumurthy Venkatrama Subrahmanya Gunturi, Steven Anthony Colbert, Brian Thomas Collins
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Publication number: 20040217685Abstract: The present invention relates to a color cathode ray tube and more specifically to a color cathode ray tube in which electron beam landing errors caused by terrestrial magnetism are corrected such that color purity is improved.Type: ApplicationFiled: February 9, 2004Publication date: November 4, 2004Inventor: Jae Kyu Park
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Publication number: 20040212290Abstract: An oxide composite particle of the present invention is composed of at least one fine gold particle contained in a matrix of an oxide particle or at least one fine gold particle supported fixedly on the surface of an oxide particle, and absorbs a visible light having a specific wavelength. A phosphor of the invention has a thin film which is composed of such oxide composite particles on the surface of a phosphor particle of red or the like. The phosphor can be obtained by mixing phosphor particles into a dispersion of gold colloid/oxide composite particles, agitating the resultant mixture, and taking out the precipitated phosphor particles, followed by drying. Further, in a color filter of the invention, a filter layer of at least one color formed on an inner surface of a panel is a thin film composed of the above-described oxide composite particles.Type: ApplicationFiled: October 1, 2002Publication date: October 28, 2004Inventors: Takeo Ito, Koji Washiyama, Tsuyoshi Oyaizu, Hiroshi Makihara, Toshimi Fukui
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Patent number: 6806633Abstract: An inner magnetic shield is provided that reduces mislanding lengths due to electron beam distortion caused by external magnetic fields such as terrestrial magnetism, thereby reducing the occurrence of drifted or uneven color throughout an entire display screen. The inner magnetic shield is of a tube with a plurality of side surfaces, and is provided with at least one skirt (37) that extends to the vicinity of a spanning member (41) at a location where the inner magnetic shield is not in contact with a holding member (42). The skirt (37) is magnetically coupled with the spanning member (42).Type: GrantFiled: December 10, 2002Date of Patent: October 19, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Ryuichi Murai, Shinichiro Hatta, Hiroshi Iwamoto, Shigeo Nakatera, Takayuki Yonezawa, Tomohisa Mikami
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Patent number: 6806636Abstract: A CRT display including a display panel having a substantially flat outside surface, and an inside surface with a substantially fixed curvature includes a film coating with a non-uniform transmissivity. The film coating's transmissivity is varied, as a function of position, to compensate for variations in transmissivity exhibited by the display panel, thus resulting in substantially uniform image brightness across the surface of the CRT.Type: GrantFiled: April 19, 2002Date of Patent: October 19, 2004Assignee: LG Electronics, Inc.Inventors: Cheon Su Kang, Sung Ho Park
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Publication number: 20040201343Abstract: The present invention relates to a colour picture tube and to a manufacturing method for a colour picture tube. The colour picture tube includes a shadow mask which is secured to a mask frame. In order to improve the shielding effect, a shielding plate, which shields external magnetic fields, is secured to at least one longitudinal bar of the mask frame. By means of such a shielding plate, the picture quality of a colour picture tube can be improved and the manufacturing efforts can be simplified in comparison with conventional colour picture tubes.Type: ApplicationFiled: March 9, 2004Publication date: October 14, 2004Applicant: MT Picture Display Germany GmbHInventors: Konrad Leutz, Rolf Reidinger
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Patent number: 6800344Abstract: A cathode ray tube glass comprises a clean cathode ray tube made of glass and a coating film composed of at least one water-soluble material selected from the group consisting of water-soluble salts, acids being solid at room temperature, monosaccharides and polysaccharides, which is formed on a glass surface of the cathode ray tube in an amount of 0.01-100 &mgr;g/cm2 or to a film thickness of 0.1-200 nm.Type: GrantFiled: May 14, 2001Date of Patent: October 5, 2004Assignee: Asahi Glass Company Ltd.Inventors: Mikio Sasaki, Satoshi Rokudai
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Patent number: 6800994Abstract: A display apparatus comprising an evacuated envelope having an interior surface and an exterior surface is disclosed. The envelope includes a faceplate having a luminescent screen on the interior surface thereof. An electron gun is disposed within a neck of the envelope for generating at least one electron beam that is directed toward the luminescent screen. A funnel connects the neck of the envelope with the faceplate. A deflection yoke is disposed around the envelope at the junction of the neck and the funnel. The yoke is attached to the envelope with an adhesive. A resistive primer coating is disposed on the envelope and forms a barrier between the yoke adhesive and the envelope. The resistive primer coating is formed from an aqueous formulation comprising a copolymer of chloroprene and methacrylic acid, a conductive filler material and at least one cross-linking agent.Type: GrantFiled: September 26, 2002Date of Patent: October 5, 2004Assignee: Thomson Licensing S. A.Inventors: Donald Walter Bartch, Alan Andrew Halecky, John Stephen Farrah, James Francis Edwards
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Patent number: 6797876Abstract: There is provided an image display device including a panel of good work efficiency which can prevent the destruction of its conductive coat due to discharge and can highly efficiently reduce the leakage of unwanted radiation electric fields. The image display device includes a panel grounding electrode which connects a conductive coat and a grounding member together, and the panel grounding electrode uses a conductive adhesive material having in the whole of an adhesive layer, and an insulative protective tape.Type: GrantFiled: March 8, 2002Date of Patent: September 28, 2004Assignee: Hitachi, Ltd.Inventors: Noriharu Matsudate, Atsuo Nakagawa
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Patent number: 6794809Abstract: A display unit has a face surface and a multi-layered antireflection antistatic film composed of three layers or more which are formed on the face surface. The multi-layered antireflection antistatic film has an absorption layer, a conductive layer, and a protect layer in the order from a face surface side. The absorption layer includes at least one kind of organic coloring matter, SiO2, and a silane coupling agent, and the silane coupling agent content thereof is seven times or less by weight the total solid content of SiO2 and the organic coloring matter.Type: GrantFiled: February 19, 2002Date of Patent: September 21, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Hisashi Chigusa, Daiki Takahashi, Michiyo Abe, Katsuyuki Aoki
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Patent number: 6793729Abstract: A conductive material for use in interior coating of a cathode ray tube (CRT), which includes an aqueous dispersion medium containing potassium silicate and a dispersing agent; and graphite particles. The potassium silicate of the aqueous dispersion medium has a silicon dioxide (SiO2) to potassium oxide (K2O) mole ratio in the range of 4.5:1 to 6:1, and is prepared by adding hydrosilica gel to a potassium silicate aqueous solution having a SiO2 to K2O mole ratio less than 4.5:1. When the conductive material, which uses potassium silicate dispersed in an aqueous dispersion medium with a SiO2:K2O mole ratio in the range of 4.5:1 to 6:1, as a binder, is applied to form a conductive layer on the funnel of a CRT, adhesiveness of the conductive layer markedly increases. Use of the potassium silicate as a binder decreases the amount of gas released during a hot-evacuation process, and thus shortens evacuation time.Type: GrantFiled: October 9, 2001Date of Patent: September 21, 2004Inventor: Chang-Hun Lee
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Patent number: 6791256Abstract: A display device includes a first substrate, a second substrate disposed to face the first substrate, plural pixels disposed in a display area on an inner surface of the first substrate, a rubber member disposed between the first and second substrates to surround the display area, and sealing the display area from an ambient atmosphere, and an adhesive layer sealing together the first and second substrates along peripheries thereof. The adhesive layer is derived from a sol-gel solution.Type: GrantFiled: February 11, 2003Date of Patent: September 14, 2004Assignee: Hitachi, Ltd.Inventors: Masahiro Nishizawa, Noriharu Matsudate, Norikazu Uchiyama, Maki Taniguchi
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Patent number: 6787983Abstract: An image-forming apparatus includes an envelope, an electron source and an image-forming member arranged within the envelope, as well as an electron source drive circuit. An electroconductive member is arranged on the inner wall surface of the envelope between the electron source and the image-forming member. An electric current flow path A is formed as extending between the electroconductive member and the ground without passing through any of the electron source and the drive circuit. The electric current flow path A has a resistance lower than the resistance of another electric current flow path B extending between the electroconductive member and the ground by way of the electron source or the drive circuit.Type: GrantFiled: March 13, 1998Date of Patent: September 7, 2004Assignee: Canon Kabushiki KaishaInventors: Masato Yamanobe, Fumio Kishi
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Publication number: 20040169455Abstract: A composition and method of forming an internal neutral density filter on a luminescent screen assembly of a cathode ray tube (CRT) is disclosed. The luminescent screen assembly is formed on an interior surface of a glass faceplate panel of the CRT tube. The luminescent screen assembly includes a patterned light-absorbing matrix that defines three sets of fields corresponding to one of a blue region, a green region and a red region. An internal neutral density filter is formed on the light-absorbing matrix. An array of blue, green and red color phosphors is formed on the internal neutral density filter corresponding to one of the blue region, the green region and the red region defined in the light-absorbing matrix. The internal neutral density filter has a composition including a red pigment, a blue pigment and at least one non-pigmented oxide particle.Type: ApplicationFiled: February 27, 2003Publication date: September 2, 2004Inventors: Farzad Parsapour, Bhanumurthy Venkatrama Subrahmanya Gunturi, Steven Anthony Colbert, Brian Thomas Collins
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Patent number: RE39739Abstract: A color picture tube is provided with a glass bulb in which the external surface of the effective display area of the face plate is formed substantially flat and a color selection mask, having the curvature projected toward the face plate, provided opposed to the internal surface of the face plate within the glass bulb. Therefore, the external surface is flat, the mechanical shock resistance characteristic is high, a tension can surely be applied to the color selection mask and moreover vibration of the color selection mask can be prevented even if external vibration is applied thereto.Type: GrantFiled: January 18, 2002Date of Patent: July 24, 2007Assignee: Sony CorporationInventors: Yukinobu Iguchi, Ichiro Utsumi, Koji Saita