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公开(公告)号：FR2579020B1
公开(公告)日：1988-11-25
申请号：FR8603495
申请日：1986-03-12
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , MASTERTON WALTER DAVID
Abstract: An improvement is made in a color picture tube having a substantially rectangular slit-aperture type shadow mask mounted therein in spaced relation to a substantially rectangular cathodoluminescent line screen. In the specific improvement, the cathodoluminescent lines of said screen, in front plan view, first increase in curvature with an increase in distance from the minor axis of the screen and then decrease in curvature with further increase in distance from the minor axis, to become substantially straight at the short sides of the screen.
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公开(公告)号：GB2185148A
公开(公告)日：1987-07-08
申请号：GB8630240
申请日：1986-12-18
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , MASTERTON WALTER DAVID , BAUDER RICHARD CLARK
Abstract: The present invention is an improvement in a method of screening a line screen slit mask color picture tube. Such method includes coating a faceplate panel of the tube with a photosensitive material, inserting a slit shadow mask into the panel and exposing the photosensitive material by passing light from a line light source through the slits of the mask. Such method further comprises positioning a generally cylindrical shaped lens between the line light source and the faceplate panel during exposure of the photosensitive material. The longitudinal axis of the lens is oriented perpendicular to the longitudinal axis of the line light source. The improvement comprises moving both the faceplate panel and the cylindrical shaped lens in synchronization in a direction parallel to the line light source during the exposing step.
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公开(公告)号：DE3643113A1
公开(公告)日：1987-06-25
申请号：DE3643113
申请日：1986-12-17
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , MASTERTON WALTER DAVID , BAUDER RICHARD CLARK
Abstract: The present invention is an improvement in a method of screening a line screen slit mask color picture tube. Such method includes coating a faceplate panel of the tube with a photosensitive material, inserting a slit shadow mask into the panel and exposing the photosensitive material by passing light from a line light source through the slits of the mask. Such method further comprises positioning a generally cylindrical shaped lens between the line light source and the faceplate panel during exposure of the photosensitive material. The longitudinal axis of the lens is oriented perpendicular to the longitudinal axis of the line light source. The improvement comprises moving both the faceplate panel and the cylindrical shaped lens in synchronization in a direction parallel to the line light source during the exposing step.
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公开(公告)号：BR8404459A
公开(公告)日：1985-07-30
申请号：BR8404459
申请日：1984-09-05
Applicant: RCA CORP
Inventor： AMATO RALPH JAMES D , GODFREY RICHARD HUGH , MORRELL ALBERT MAXWELL , RAGLAND FRANK ROWLAND JR
Abstract: Improvement is provided in the appearance of a color picture type cathode-ray tube including rectangular faceplate with an exterior surface having curvature along both the minor (Y-Y) and major (X-X) axes. At least in the center portion of the faceplate, the curvature along the minor axis is at least 10 percent greater than the curvature along the major axis. Points on the exterior surface near the ends of the major axis, at the edges of the screen, lie in a first plane (P1) perpendicular to the central axis (Z-Z) of the tube; points on the exterior surface near the ends of the minor axis, at the edges of the screen, lie in a second plane (P2) which is spaced from and parallel to the first plane; and points on the exterior surface near the ends of the diagonals of the rectangular faceplate, at the edges of the screen, lie in a third plane (P3) which is spaced from and parallel to the first plane. The three planes are spaced from the center portion of the faceplate in the order of second plane, first plane and third plane. Further relative dimensions are detailed.
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公开(公告)号：DE3432677A1
公开(公告)日：1985-04-04
申请号：DE3432677
申请日：1984-09-05
Applicant: RCA CORP
Inventor： D AMATO RALPH JAMES , GODFREY RICHARD HUGH , MORRELL ALBERT MAXWELL , RAGLAND JUN FRANK ROWLAND
Abstract: Improvement is provided in the appearance of a color picture type cathode-ray tube including rectangular faceplate with an exterior surface having curvature along both the minor (Y-Y) and major (X-X) axes. At least in the center portion of the faceplate, the curvature along the minor axis is at least 10 percent greater than the curvature along the major axis. Points on the exterior surface near the ends of the major axis, at the edges of the screen, lie in a first plane (P1) perpendicular to the central axis (Z-Z) of the tube; points on the exterior surface near the ends of the minor axis, at the edges of the screen, lie in a second plane (P2) which is spaced from and parallel to the first plane; and points on the exterior surface near the ends of the diagonals of the rectangular faceplate, at the edges of the screen, lie in a third plane (P3) which is spaced from and parallel to the first plane. The three planes are spaced from the center portion of the faceplate in the order of second plane, first plane and third plane. Further relative dimensions are detailed.
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Patent Agency Ranking
公开(公告)号：FR2551582A1
公开(公告)日：1985-03-08
申请号：FR8413660
申请日：1984-09-05
Applicant: RCA CORP
Inventor： AMATO RALPH JAMES D , GODFREY RICHARD HUGH , MORRELL ALBERT MAXWELL , RAGLAND FRANK ROWLAND JR
Abstract: Improvement is provided in the appearance of a color picture type cathode-ray tube including rectangular faceplate with an exterior surface having curvature along both the minor (Y-Y) and major (X-X) axes. At least in the center portion of the faceplate, the curvature along the minor axis is at least 10 percent greater than the curvature along the major axis. Points on the exterior surface near the ends of the major axis, at the edges of the screen, lie in a first plane (P1) perpendicular to the central axis (Z-Z) of the tube; points on the exterior surface near the ends of the minor axis, at the edges of the screen, lie in a second plane (P2) which is spaced from and parallel to the first plane; and points on the exterior surface near the ends of the diagonals of the rectangular faceplate, at the edges of the screen, lie in a third plane (P3) which is spaced from and parallel to the first plane. The three planes are spaced from the center portion of the faceplate in the order of second plane, first plane and third plane. Further relative dimensions are detailed.
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公开(公告)号：BR8400790A
公开(公告)日：1984-10-02
申请号：BR8400790
申请日：1984-02-21
Applicant: RCA CORP
Inventor： AMATO RALPH JAMES D , GODFREY RICHARD HUGH , MASTERTON WALTER DAVID , MORRELL ALBERT MAXWELL , WEBER DONALD LEWIS
Abstract: A cathode-ray tube eg. a shadow mask colour tube, includes a rectangular faceplate which has an exterior surface having curvature along both the minor (Y-Y) and major (X-X) axes wherein at least in the center portion of the faceplate, the curvature along the minor axes is greater than the curvature along the major axis (as shown in Figure 6). In a preferred arrangement the curvature along the minor axis is at least 4/3 greater than the curvature along the major axis. The arrangement provides a substantially rectangular contour near the periphery of the faceplate lying in a plane P thus creating an illusion that a picture produced on the faceplate is flat. The faceplate may be associated with a shadow mask which similarly has greater curvature along its minor axis than along its major axis. Variations in the thickness of the faceplate are also discussed.
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公开(公告)号：IT8419629D0
公开(公告)日：1984-02-15
申请号：IT1962984
申请日：1984-02-15
Applicant: RCA CORP
Inventor： AMATO RALPH JAMES D , GODFREY RICHARD HUGH , MASTERTON WALTER DAVID , MORRELL ALBERT MAXWELL , WEBER DONALD LEWIS
Abstract: A cathode-ray tube eg. a shadow mask colour tube, includes a rectangular faceplate which has an exterior surface having curvature along both the minor (Y-Y) and major (X-X) axes wherein at least in the center portion of the faceplate, the curvature along the minor axes is greater than the curvature along the major axis (as shown in Figure 6). In a preferred arrangement the curvature along the minor axis is at least 4/3 greater than the curvature along the major axis. The arrangement provides a substantially rectangular contour near the periphery of the faceplate lying in a plane P thus creating an illusion that a picture produced on the faceplate is flat. The faceplate may be associated with a shadow mask which similarly has greater curvature along its minor axis than along its major axis. Variations in the thickness of the faceplate are also discussed.
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公开(公告)号：FI58232C
公开(公告)日：1980-12-10
申请号：FI1673
申请日：1973-01-04
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , BARKOW WILLIAM HENRY , GROSS JOSEF
Abstract: 1385745 Colour television tubes RCA CORPORATION 1 May 1972 [14 Jan 1972] 20047/72 Heading H1D A colour television tube of the shadow mask type using three co-planar beams, is provided with a deflection yoke adapted to produce a pin cushion shaped horizontal deflecting field which causes under convergence at extreme horizontal deflection, and a barrel-shaped vertical deflecting field which causes over-convergence at extreme vertical deflection; and the electron gun is adapted to produce a spacing between the beams at the centre of the deflection yoke not greater than 0À2 inch. Dynamic convergence arrangements are then unnecessary but may be provided for larger tubes. The electron gun may comprise three individual cathodes and common G1 to G4 electrodes provided with apertures for the beams; the outer apertures of the final electrode may be surrounded by magnetically permeable material such as nickel iron to partly screen the outer beams from the deflection fields and thereby equalize the raster sizes for the three colours. The deflection yoke is as described in Specification 1385747 and is preferaby toroidal but saddle coils may be used. The shadow mask may be provided with elongate apertures, and the fluorescent screen may comprise stripes of different colours.
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