• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An improvement is made in a color picture tube having a slit-type shadow mounted therein in spaced relation to a cathodoluminescent line screen. For the mask, the spacing between adjacent aperture columns increases from center-to-edge as approximately the fourth power of the distance along from the center. Such fourth order spacing variation permits shaping of the shadow mask so that the contour of the mask along its major axis also varies as a function substantially of the fourth power of distance along from the center of the mask.
    公开号:SU1708166A3
    申请号:SU853886307
    申请日:1985-05-06
    公开日:1992-01-23
    发明作者:Дэвид Мастертон Вальтер
    申请人:Рка Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    from screen 9. An electronic spotlight 11 with a linear arrangement (shown by dashed lines in FIG. 1) is installed in the center of the neck L for generating and delivering three electron beams 12 along initially coplanar converging paths through mask 10 to screen 9.
    The tube 1 is designed to be used with an external magnetic deflecting system, such as the deflecting system 13, schematically shown around the neck 4 and the socket 5 in the vicinity of their connection, for the three beams 12 to be subjected to vertical and horizontal deflection magnetic flux to produce a horizontal beam the direction along the major axis (X - X) and in the vertical direction along the minor axis (Y - Y), respectively, along a rectangular raster on the screen 9.
    The periphery of the faceplate 6 forms a rectangle with slightly fixed sides. The border of screen 9 is shown by dotted lines (FIG. 2), this border is rectangular.
    When comparing the relative contours of the outer surface of the bottom of the flask 3 along the small Y-Y axis and the major axis X-X, it can be seen that the outer surface of the bottom 3 of the flask is rounded both along the major axis and along the minor axis, with the curvature along the minor axis greater than the curvature along the major axis in the center of the faceplate 6. For example, in the center of the faceplate the ratio of the radius of curvature of the contour of the outer surface along the major axis to the radius of curvature along the minor axis is greater than 1.1 (i.e. the difference is greater than 10%). The curvature along the major axis is much less in the central part of the bottom and increases along the edges of the faceplate. In this embodiment, the curvature along the major axis near the bottom edge is larger than the total curvature along the minor axis. In this design, the central part of the faceplate becomes flatter, while the points on the outer surface of the bottom on the edges of the screen lie in the plane P and define basically the rectangular line of the peripheral contour. The curvature of the surface diagonally is chosen to smooth the transition between different curvature values along the major and minor axes. In a preferred embodiment, the curvature along the minor axis is about 4/3 times the curvature along the major axis in the center of the bottom.
    As a result of using different curvature along the major and minor axis points on the outer surface of the faceplate 6, opposite the edges of screen 9, lie in the same plane P. These glider points, if
    consider the front part of the bottom 3 of the bulb (figure 2), form a contour line on the outer surface of the bottom, which is mainly a rectangle,
    combined at the edges of screen 9. Therefore, when tube 1 is inserted into a television receiver, a frame or frame with a uniform width can be used around the tube. Edge such a framing which
    0 is in contact with the tube along the rectangular contour line, also basically lies in the plane P. Since the peripheral border of the image on the screen of the tube seems flat, it seems that the image is flat, although the bottom is curved outward along both the major axis and the small
    In the front view (Fig. 4) of the new shadow mask 10, the dotted lines 14 depict the border of a portion of the mask 10c with holes. The contours of the surface along the main axis X - X, the minor axis Y - Y, and the diagonal of the mask 10 are shown by curves a, b, and c, respectively, in Fig. 5. Mask 10 has different curvature along its major and minor axis.
    5 The contour along the major axis has a small curvature near the center of the mask and a large curvature on the sides of the mask. The contour of such a shadow mask can be obtained by describing the curvature in the form of a circle.
    0 of a large radius around the central part of the major axis X - X and in the form of a circle of smaller diameter around the rest of the major axis. However, the sagittal height along the major axis varies substantially as the distance from the minor axis Y – V to the fourth power. The sagittal height is the distance from an imaginary plane that tangentially touches the center of the mask surface. The curvature parallel to the small Y-Y axis is such that it smoothly matches the curvature of the major axis and the required periphery of the mask and may include changes in curvature along the major axis. Such a contour of the mask has improved thermal expansion characteristics due to increased curvature near the ends of the major axis.
    Table 1 presents the curvature data of the shadow mask along its major axis X 0 X for a tube that has a screen of 68, 58 cm diagonally, where in the first column is the distance from the minor axis Y - Y, in the second column it is the distance from malry axes, taken in the fourth degree, in the third column; 5 calculations in the fourth order for the Z axis or sagittal heights. Sagittal height Z (in mil x) is 0.1314 X inch, and in metric units of 0.025 mm 0.1314 x (distance 25.4 mm), where X is the distance from the major axis.
    Due to the new contour of the fourth order of change of the distance between the columns of the holes, which were used in the well-known shadow masks, are unacceptable for the new shadow mask. In general, the distance a, i.e. the distance between the center lines of adjacent columns of holes increases from the center to the edge in the new mask as well as in the known masks. Such an increase in the distance a can be seen by comparing fig. B, illustrating the center of the mask, from fig. 7, illustrating the edge of the mask. However, in the new mask, the change in distance a is significantly different from such changes in the known masks.
    The horizontal distance a between the columns of the holes in the new shadow mask 10 varies approximately as a function of A + Bx, where.x is the distance from the center of the hole to the axis Y of the tube; A and B are constant values.
    The change in the fourth order distance is presented in Table 2 for a color kinescope having a screen size of 68, 58 cm diagonally, where the first column is the distance from the minor Y-Y axis, measured along the major X-X axis, the second column is the distance in the first column, taken in the fourth degree, the third column is the calculated distance a, based on the function of the fourth degree.
    Comparative data for a conventional shadow mask of a spherical contour of similar dimensions is presented in Table 3, where the first column is the distance along the major axis from the minor axis, the second column is the square of the distance from the minor axis, and the third column is the calculated distance a, based on the function second degree.
    Fig. 8 shows a graph of the actual distances a shown in Tables 2 and 3 for visual comparison. The distance a of a conventional shadow mask begins to increase in the vicinity of the minor axis and continues to gradually increase towards the edge of the mask. However, the distance of the new shadow mask is relatively constant through the central part of the mask and increases more sharply, approaching the sides of the mask.
    The distance of the mask in the cross sections parallel to the major axis varies approximately the same as the distance from the minor axis to the fourth power, although with some difference.
    Table 4 shows the data compared with the data of Table 2 for a cross section of a new shadow mask near the position of the holes (inches) that is parallel to the minor axis. For cross sections between a major axis and a parallel cross section (inches), the x coefficients are in the range of 0.001-0.00126.
    Formulas and 3bs A color picture tube containing a shadow mask mounted adjacent to a cathodoluminescent bar screen on the inside of a rectangular glass faceplate, while the shadow mask and glass faceplate have different curvatures along the main axis and the minor axis perpendicular to the main axis. the axis, with the curvature along the main axis being greater on the sides than in the center of the mask or glass faceplate, and the screen itself has a visually flat peripheral border, the mask contains many About slit-like holes arranged in columns parallel to the small axis, in which the distance between adjacent holes of adjacent columns increases with distance from the minor axis, characterized in that, in order to improve the image quality by better combining the cathodoluminescent elements and the trace from the electronic the beam, the sagittal height of the mask along its main axis and the distance between adjacent columns of holes in the mask increase in accordance with the law A + Bx, where X is the distance from the minor axis and A and B are numerical coefficients itsienty.
    Table
    Continued tabl, 1
    table 2
    Table 3
    Table 4
    .J
     V of FIG. 2
    MINOR AXIS
    MAJOR AXIS
    / g.
    9 (d. 5
    .6
    fpU2.7
    30 31 32 33 34 35 36 ЗТ 38
    ApACiije
    CONVENTIONAL SPHERICAL
    MILS)
    39 40
    2 3 DISTANCE ALONG MAJOR AXIS FROM MINOR AXIS
    NOVEL SHADOW MASK SHADOW MASK
    5 6
    7
    9 10 (INCHES)
    FIG. eight
    权利要求:
    Claims (1)
    [1]
    Claim
    A color picture tube containing a shadow mask mounted adjacent to the cathodoluminescent dash screen formed on the inside of a rectangular glass faceplate, with the shadow mask and glass facet having different curvatures along the main axis and a minor axis perpendicular to the main axis, and the curvature along the main axis will be larger on the sides than in the center of the mask or glass plate, and the screen itself has a visually flat peripheral border, the mask contains many slit-like holes, located in columns parallel to the minor axis, in which the distance between adjacent openings of adjacent columns increases with distance from the minor axis, characterized in that, in order to improve image quality due to better combination of cathodoluminescent elements and the trace from the electron beam, the sagittal mask height along its main axis and the distance between adjacent columns of holes in the mask increases in accordance with the law A + Bx 4 , where x is the distance from the minor axis, and A and B are numerical coefficients.
    Table!
    Y-axis distance X z —--- 1 - Z inch cm inch 4cm 4= 4 miles 0,1314h cm 4 0 0 0 0 0 0 1 2.54 1 42 0 5.5 2 5.08 16 666 2 87.5 3 7.62 81 3371 ’ 10 443 4 10.16 256 10656 33 1400 5 12.7 625 26014 82, 3418 6 15.24 1296 53944 170 -7088 7 17.78 2401 99937 315 13132
    Ί
    Continuation of the table. 1
    Distance from оси-Ϋ axis --—........ Ζ inch cm inch 4cm 4mile - 0.1314x 4cm 4 8 20.32 '4096 170488 538 22402 9 22.86 6561 273089 862 36884 9.5 24.13 8145 339023 1070 44548
    table 2
    X ”’ G—; a inch cm INCH 4cm 4(mile) DA * +0.001 x 4cm 4 0 0 0 0 30,0 thirty 1 2.54 1 42 30,0 thirty 2 5.08 16 666 30.0 31 3 7.62 81 3371 30.1 33 4 10.16 256 10656 30.3 41 5 12.7 625 26014 30.6 56 6 15.24 1296 53944 '31.3 84 7 17.78 2401 99937 32,4 130 8 20.32 4096 170488 34.1 200 9 22.86 6561 273089 36.6 303 9.67 24.56 8744 363843 38.7 394
    Table 3
    .. x '' X 2. 1 .. - a inch cm inch 2SM 2(, mile) 30+ + 0.097x 2cm 2 0 0 about 0 30,0 thirty 1 2.54 ' '/ ·. 1- 6.45 30.1 31 2 5.08 ;· 4 . 26 30,4 32,5 . 3 7.62 9 58 30.9 35.6 4 10.16 16 ··,· 103 31.6 40 . 5 12.7 25 161 32,4 46 6 15.24 36 232 33.5 ' 52,5 . 7 17.78 49 316 34.8 61 8 20.32 64 413 36,2 70 9 22.86 81 523 37.9 81 9.60 24.56 92.2 595 38.9 88
    Table 4
    X ....... V ..... ”. a inch cm Inch x 4cm 4(miles) 30+ + 0,00126h 4cm 4 0 0 0 0 ‘30.0 thirty 1 2.54 1 42 30,0 thirty 2 5.08 16 666 30,0 31 3 7.62 81 3371 30.1 34 4 10.16 256 10656 30.3 43 5 12.7 625 26014, 30.8 63 6 15.24 1296 53944 31.6 98 7 17.78 2401 99937 33.0 156 8 20.32 4096 .170488 35,2 245 9 22.86 6561 273089 38.3 374 9.78 24.84 8744 380721 41.0 510
    ASPACING (MILS)
    FIG. in
    类似技术:
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    同族专利:
    公开号 | 公开日
    GB8513366D0|1985-07-03|
    FR2565406B1|1989-03-31|
    IN164838B|1989-06-10|
    HK694A|1994-01-14|
    GB2199181A|1988-06-29|
    KR850008552A|1985-12-18|
    PL253738A1|1986-02-25|
    IT8520524D0|1985-04-29|
    JPH0148607B2|1989-10-19|
    JPS60262335A|1985-12-25|
    CS379885A3|1992-02-19|
    GB2160354B|1989-01-11|
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    GB2160354A|1985-12-18|
    DE3519427C2|1986-09-04|
    DD233453A5|1986-02-26|
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    CZ278262B6|1993-11-17|
    PL147646B1|1989-07-31|
    HK2594A|1994-01-21|
    US4583022A|1986-04-15|
    KR900005539B1|1990-07-31|
    GB2199181B|1989-01-18|
    SG109191G|1992-02-14|
    GB8801566D0|1988-02-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1452018A|1965-03-04|1966-02-25|Loing Verreries|Development of bulbs for cathode-ray tubes, in particular for television tubes|
    GB1165766A|1967-06-06|1969-10-01|Thorn Aei Radio And Tubes Ltd|Improvements in Cathode Ray Tubes for Colour Television|
    JPS5347658B1|1969-01-24|1978-12-22|
    US3652895A|1969-05-23|1972-03-28|Tokyo Shibaura Electric Co|Shadow-mask having graduated rectangular apertures|
    NL7303077A|1973-03-06|1974-09-10|
    GB1546889A|1975-03-19|1979-05-31|Rca Corp|Cathode ray tube having shadow mask|
    US4136300A|1975-03-19|1979-01-23|Rca Corporation|Cathode ray tube having improved shadow mask|
    JPS6143814B2|1975-09-05|1986-09-30|Hitachi Ltd|
    DE2656995C2|1976-12-16|1983-12-01|Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt|Rectangular color selection mask for a color cathode ray tube|
    JPS606067B2|1980-12-02|1985-02-15|Matsushita Electronics Corp|
    US4786840A|1983-02-25|1988-11-22|Rca Licensing Corporation|Cathode-ray tube having a faceplate panel with a substantially planar periphery|
    US4839556A|1983-02-25|1989-06-13|Rca Licensing Corporation|Cathode-ray tube having an improved shadow mask contour|
    JPH0373979B2|1983-03-10|1991-11-25|
    CZ278548B6|1983-09-06|1994-03-16|Rca Licensing Corp|Cathode-ray tube comprising a rectangular panel of the front plate|US4691138A|1985-03-14|1987-09-01|Rca Corporation|Color picture tube having shadow mask with varied aperture column spacing|
    IN165336B|1985-03-14|1989-09-23|Rca Corp|
    JPH03205966A|1988-10-18|1991-09-09|Samsung Electron Devices Co Ltd|Luminance correcting circuit|
    JPH06275206A|1993-03-19|1994-09-30|Hitachi Ltd|Color cathode-ray tube with shadow mask of variable hole pitch|
    TW323378B|1994-01-14|1997-12-21|Videocolor Spa|
    IT1269426B|1994-01-14|1997-04-01|Videocolor Spa|TUBE FOR THE REPRODUCTION OF COLOR IMAGES, WITH REDUCED PRIMARY AND SECONDARY MARKING|
    JP3894962B2|1994-04-12|2007-03-22|株式会社東芝|Color picture tube|
    TW297907B|1994-07-14|1997-02-11|Toshiba Co Ltd|
    US5841247A|1995-11-24|1998-11-24|U.S. Philips Corporation|Cathode ray tube, display system incorporating same and computer including control means for display system|
    JPH10241597A|1996-12-25|1998-09-11|Toshiba Electron Eng Corp|Color television picture tube|
    IT1298770B1|1998-03-20|2000-02-02|Videocolor Spa|SHADOW MASK OF A COLOR KINESCOPE, WITH A BETTER SPACING OF THE OPENING COLUMNS OF THE SAME|
    ITMI20021824A1|2002-08-13|2004-02-14|Videocolor Spa|IMPROVEMENT OF COLOR CATHODIC RAYS|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US06/615,589|US4583022A|1984-05-31|1984-05-31|Color picture tube having shadow mask with specific curvature and column aperture spacing|
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