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公开(公告)号：DE69840499D1
公开(公告)日：2009-03-12
申请号：DE69840499
申请日：1998-05-11
Applicant: THOMSON CONSUMER ELECTRONICS
Inventor： GOROG ISTVAN , MATEY JAMES REGIS , SIMMS ROBERT EDWARD
Abstract: A CRT 10 has an evacuated envelope 11 comprising a funnel 15 having a neck 14 and an open end. The funnel 15 is sealed at the open end to a faceplate panel 12 having a luminescent screen 22 formed on a viewing area of an interior surface of the faceplate panel by an electrophotographic screening process. The screen 22 comprises a multiplicity of different color-emitting phosphor elements. A light absorbing matrix 23 has a first portion that includes a multiplicity of openings therein overlying the viewing area of the faceplate panel, and a second portion providing an imperforate border 123 extending beyond the viewing area. The phosphor elements are disposed within the openings in the matrix. A color selection electrode 25 is mounted within the faceplate panel 12, in proximity to the screen 22. An electron gun 26 is centrally disposed within the neck 14 for generating and directing a plurality of electron beams 28 toward the screen 22. The screen structure is improved by having at least one of the phospor elements disposed on the imperforate border 123 of the matrix 23.
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公开(公告)号：CA2199299C
公开(公告)日：2005-11-01
申请号：CA2199299
申请日：1995-08-03
Applicant: THOMSON CONSUMER ELECTRONICS
Inventor： RITT PETER MICHAEL , GOROG ISTVAN
Abstract: In accordance with the present invention, a method of electrophotographicall y manufacturing a luminescent screen assembly on an interior surface of a faceplate panel (12) of a color CRT (10) comprises the steps of coating the interior surface of the panel with a volatilizable, organic conductive material to form an organic conductive (OC ) layer (32), and overcoating the OC layer with a volatilizable, photoconductive material to form an organic photoconductive (OPC) layer (34) . Then, a substantially uniform voltage is established on the OPC layer, and selected areas of the OPC layer are exposed to visible light to affect the voltage thereon, without affecting the voltage on the unexposed area of the OPC layer. Next, triboelectrically charged, light- absorbing screen structure material is deposited onto the unexposed area of the OPC layer to form a substantially continuous matrix (23) of ligh t- absorbing material having open areas therein. The present method is an improvement over prior methods in that the present method includes the additional steps of forming a planarizing layer (35, 135) on the OPC layer, overcoating the planarizing layer with a second coati ng of the volatilizable, organic conductive material to form a second OC layer (132), and then overcoating the second OC layer with a secondcoating of the volatilizable, organic photoconductive material to form a second OPC layer (134). The phosphor materials are deposited onto a suitable charged and exposed second OPC layer so that the phosphors completely overlie the openings in the matrix and overlap at least a portion of the matrix adjacent to the openings.
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公开(公告)号：DE69731795D1
公开(公告)日：2005-01-05
申请号：DE69731795
申请日：1997-07-31
Applicant: THOMSON CONSUMER ELECTRONICS
Inventor： KUCZER PAUL , GOROG ISTVAN , BARBIN ROBERT LOYD , HOLTZAPPLE JOHN ALAN , PIERI ROGER
Abstract: A cathode ray tube may utilize a focus mask color-selection structure. The focus mask structure is susceptible to localized, transient short circuit events, or breakdown events. These events may be caused by conductive particulates that become free within the cathode ray tube and provide a short circuit between first and second layers of the focus mask. The breakdown events are undesirable because they may result in cross-strand currents causing mask strand magnetization that can interfere with a video image on the screen of the cathode ray tube. A rapid degaussing operation is initiated during the next subsequent vertical blanking period following detection of the breakdown event.
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公开(公告)号：DE69508409D1
公开(公告)日：1999-04-22
申请号：DE69508409
申请日：1995-08-03
Applicant: THOMSON CONSUMER ELECTRONICS
Inventor： GOROG ISTVAN , RITT PETER
Abstract: In accordance with the present invention, a method of electrophotographically manufacturing a luminescent screen assembly on an interior surface of a faceplate panel 12 of a color CRT 10 comprises the steps of coating the interior surface of the panel with a volatilizable, organic conductive material to form an organic conductive (OC) layer 32, and overcoating the OC layer 32 with a volatilizable, photoconductive material to form an organic photoconductive (OPC) layer 34. Then, a substantially uniform voltage is established on the OPC layer 34, and selected areas of the OPC layer 34 are exposed to visible light to affect the voltage thereon, without affecting the voltage on the unexposed area of the OPC layer 34. Next, triboelectrically charged, light-absorbing screen structure material is deposited onto the unexposed area of the OPC layer 34 to form a substantially continuous matrix 23 of light-absorbing material having open areas therein. The present method is an improvement over prior methods in that the present method includes the additional steps of forming a planarizing layer 35, 135 on the OPC layer 34; overcoating the planarizing layer 35, 135 with a second coating of the volatilizable, organic conductive material to form a second OC layer 132, and then overcoating the second OC layer 132 with a second coating of the volatilizable, organic photoconductive material to form a second OPC layer 134. The phosphor materials are deposited onto a suitable charged and exposed second OPC layer 134 so that the phosphors completely overlie the openings in the matrix 23 and overlap at least a portion of the matrix adjacent to the openings.
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公开(公告)号：CA2159370A1
公开(公告)日：1996-04-15
申请号：CA2159370
申请日：1995-09-28
Applicant: THOMSON CONSUMER ELECTRONICS
Inventor： SIMPSON THEODORE FREDERICK , GOROG ISTVAN , MARKS BRUCE GEORGE , WETZEL CHARLES MICHAEL , ESHLEMAN CRAIG CLAY
Abstract: A display apparatus (8) comprises a color CRT (10) having an evacuated envelope (11) with a faceplate panel (12) sealed to one end of a funnel (15) that is closed at the other end by a neck (14). The faceplate panel has a luminescent screen (22) on an interior surface thereof. A shadow mask (25) is located in proximity to the screen. The shadow mask comprises a metal sheet (39) having a central portion (36) and an exterior portion (38) with a plurality of apertures (40, 43) therethrough. An electron gun (26) is disposed within the neck for generating and directing electron beams (28) toward the screen. A deflection yoke (30) is disposed around the envelope at the junction of the neck and the funnel. The yoke deflects the beams to scan a raster across the screen. The display apparatus is improved over other, prior devices in that the apertures (43) in the exterior portion of the mask, on the screen-facing side thereof, have openings (45) that are elongated in the direction of the incident electron beams and offset relative to the corresponding openings (44) on the electron gun-facing side of the mask. A method of making the mask employs photoetching.
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Patent Agency Ranking
公开(公告)号：MY140620A
公开(公告)日：2009-12-31
申请号：MYPI9502955
申请日：1995-10-04
Applicant: THOMSON CONSUMER ELECTRONICS
Inventor： SIMPSON THEODORE FREDERICK , GOROG ISTVAN , MARKS BRUCE GEORGE , WETZEL CHARLES MICHAEL , ESHLEMAN CRAIG CLAY
Abstract: A DISPLAY APPARATUS (8) COMPRISES A COLOR CRT (10) HAVING AN EVACUATED ENVELOPE (11) WITH A FACEPLATE PANEL (12) SEALED TO ONE END OF A FUNNEL (15) THAT IS CLOSED AT THE OTHER END BY A NECK (14). THE FACEPLATE PANEL HAS A LUMINESCENT SCREEN (22) ON AN INTERIOR SURFACE THEREOF. A SHADOW MASK (25) IS LOCATED IN PROXIMITY TO THE SCREEN. THE SHADOW MASK COMPRISES A METAL SHEET (39) HAVING A CENTRAL PORTION (36) AND AN EXTERIOR PORTION (38) WITH A PLURALITY OF APERTURES (40, 43) THERETHROUGH. AN ELECTRON GUN (26) IS DISPOSED WITHIN THE NECK FOR GENERATING AND DIRECTING ELECTRON BEAMS (28) TOWARD THE SCREEN. A DEFLECTION YOKE (30) IS DISPOSED AROUND THE ENVELOPE AT THE JUNCTION OF THE NECK AND THE FUNNEL. THE YOKE DEFLECTS THE BEAMS TO SCAN A RASTER ACROSS THE SCREEN. THE DISPLAY APPARATUS IS IMPROVED OVER OTHER, PRIOR DEVICES IN THAT THE APERTURES (43) IN THE EXTERIOR PORTION OF THE MASK, ON THE SCREEN-FACING SIDE THEREOF, HAVE OPENINGS (45) THAT ARE ELONGATED IN THE DIRECTION OF THE INCIDENT ELECTRON BEAMS AND OFFSET RELATIVE TO THE CORRESPONDING OPENINGS (44) ON THE ELECTRON GUN-FACING SIDE OF THE MASK. A METHOD OF MAKING THE MASK EMPLOYS PHOTOETCHING.
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公开(公告)号：DE69927692T2
公开(公告)日：2006-07-13
申请号：DE69927692
申请日：1999-06-02
Applicant: THOMSON CONSUMER ELECTRONICS
Inventor： GOROG ISTVAN , LAPERUTA RICHARD , PEARLMAN SAMUEL , NOSKER WILLIAM , HERFORD HELENE , DATTA PABITRA ESTATE OF , DESAI VITHALBHI , STEWART CLARENCE , COHEE JAMES
Abstract: A light-absorbing matrix 23, having openings therein, is formed on an interior surface of a faceplate panel 12 of a cathode-ray tube 10 by providing a photoreceptor thereon, electrostatically charging the photoreceptor 72 to a substantially uniform level of charge, and exposing the photoreceptor to light through openings 33 in a color selection electrode 24 to selectively discharge the more intensely illuminated areas of the photoreceptor, without substantially discharging the less intensely illuminated areas. The photoreceptor 72 comprises a plurality of layers including a photoresist layer 56, a conductive layer 62, and a photoconductive layer 66. The openings 33 in the color selection electrode 24 have a dimension substantially greater than the dimension of the openings in the resultant matrix 23. The photoreceptor 72 is contacted with a liquid toner having charged pigment particles which form toner lines 84 on the less intensely illuminated areas of the photoreceptor. The photoreceptor 72 is exposed to UV radiation to selectively change the solubility of the photoresist portion 56 thereof into areas of greater and lesser solubility. The photoreceptor 72 is serially developed to expose portions of the interior surface of the panel 12, while leaving the areas of lesser solubility intact. Next, the interior surface of the panel and the areas of lesser solubility are coated with a matrix suspension which is dried to form the matrix 23. The areas of lesser solubility and the overlying light-absorbing matrix material thereon are removed, thereby forming in the matrix 23 a plurality of openings having a width less than the width of the openings 33 in the color selection electrode 24.
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公开(公告)号：PL181191B1
公开(公告)日：2001-06-29
申请号：PL31893195
申请日：1995-08-03
Applicant: THOMSON CONSUMER ELECTRONICS
Inventor： GOROG ISTVAN , RITT PETER M
Abstract: In accordance with the present invention, a method of electrophotographically manufacturing a luminescent screen assembly on an interior surface of a faceplate panel 12 of a color CRT 10 comprises the steps of coating the interior surface of the panel with a volatilizable, organic conductive material to form an organic conductive (OC) layer 32, and overcoating the OC layer 32 with a volatilizable, photoconductive material to form an organic photoconductive (OPC) layer 34. Then, a substantially uniform voltage is established on the OPC layer 34, and selected areas of the OPC layer 34 are exposed to visible light to affect the voltage thereon, without affecting the voltage on the unexposed area of the OPC layer 34. Next, triboelectrically charged, light-absorbing screen structure material is deposited onto the unexposed area of the OPC layer 34 to form a substantially continuous matrix 23 of light-absorbing material having open areas therein. The present method is an improvement over prior methods in that the present method includes the additional steps of forming a planarizing layer 35, 135 on the OPC layer 34; overcoating the planarizing layer 35, 135 with a second coating of the volatilizable, organic conductive material to form a second OC layer 132, and then overcoating the second OC layer 132 with a second coating of the volatilizable, organic photoconductive material to form a second OPC layer 134. The phosphor materials are deposited onto a suitable charged and exposed second OPC layer 134 so that the phosphors completely overlie the openings in the matrix 23 and overlap at least a portion of the matrix adjacent to the openings.
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公开(公告)号：IN183448B
公开(公告)日：2000-01-08
申请号：IN880CA1995
申请日：1995-07-31
Applicant: THOMSON CONSUMER ELECTRONICS
Inventor： RITT PETER MICHAEL , GOROG ISTVAN
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公开(公告)号：DE69515095T2
公开(公告)日：2000-08-24
申请号：DE69515095
申请日：1995-09-29
Applicant: THOMSON CONSUMER ELECTRONICS
Inventor： SIMPSON THEODORE FREDERICK , MARKS BRUCE GEORGE , GOROG ISTVAN , WETZEL CHARLES MICHAEL , ESHLEMAN CRAIG CLAY
Abstract: A display apparatus (8) comprises a color CRT (10) having an evacuated envelope (11) with a faceplate panel (12) sealed to one end of a funnel (15) that is closed at the other end by a neck (14). The faceplate panel has a luminescent screen (22) on an interior surface thereof. A shadow mask (25) is located in proximity to the screen. The shadow mask comprises a metal sheet (39) having a central portion (36) and an exterior portion (38) with a plurality of apertures (40, 43) therethrough. An electron gun (26) is disposed within the neck for generating and directing electron beams (28) toward the screen. A deflection yoke (30) is disposed around the envelope at the junction of the neck and the funnel. The yoke deflects the beams to scan a raster across the screen. The display apparatus is improved over other, prior devices in that the apertures (43) in the exterior portion of the mask, on the screen-facing side thereof, have openings (45) that are elongated in the direction of the incident electron beams and offset relative to the corresponding openings (44) on the electron gun-facing side of the mask. A method of making the mask employs photoetching.
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