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    Electron beam deflection correction system
    21.
    发明授权
    Electron beam deflection correction system 失效
    电子束偏转校正系统

    公开(公告)号：US3912970A

    公开(公告)日：1975-10-14

    申请号：US36814273

    申请日：1973-06-08

    Applicant: ZENITH RADIO CORP

    Inventor： CHANDLER JAMES F ,  CHIODI WAYNE R ,  FIGLEWICZ RAYMOND C ,  KARLOVICS STEVEN

    IPC: H01J29/70 ,  H01J31/20 ,  H04N9/285 ,  H01J29/56

    CPC classification number: H04N9/285 ,  H01J29/702 ,  H01J31/205 ,  H01J2229/5637 ,  H01J2229/5687 ,  H01J2229/7037

    Abstract: A color television receiver is of the type which includes a cathode ray tube having an image screen composed of luminescent dot triads distributed in a raster pattern. Each triad has dots individually productive of respective red, green and blue colors. An electron gun produces a delta array of three electron beams to excite respectively assigned ones of the dots on the screen. Two of the electron beams are aligned in the horizontal direction while the third is displaced in the orthogonal direction. The usual yoke assembly is provided on the neck of the cathode ray tube for producing horizontal and vertical scanning fields that deflect the beams over the raster pattern in order to define the image. At the same time, the yoke assembly introduces astigmatic distortion in the electron beam array as the beams are deflected toward edges of the raster. Also included is a system which tends to maintain convergence of the electron beams upon the dot triads throughout action of the deflection means. To compensate the astigmatic distortion, at least the third beam is subjected to a pair of correcting fields that are spaced opposed in the horizontal direction on opposite sides of the third beam and serve mutually to aid movement of that third beam in the orthogonal direction; in most embodiments, the correcting fields also act upon the other two beams. The correcting fields are developed in response to a waveform which includes at least a component that varies parabolically at the rate of change of the horizontal scanning field; ideally, the waveform also includes a parabolic component that varies at the vertical scanning rate. Together, the correcting fields function as a dynamic purity control.

    Cathode-ray tube including a glass envelope with two spaced external conductive coating and a connecting strip of a third external conductive coating thereon
    23.
    发明授权
    Cathode-ray tube including a glass envelope with two spaced external conductive coating and a connecting strip of a third external conductive coating thereon 失效
    阴极射线管，包括两个外部导电涂层的玻璃包装和第三个外部导电涂层的连接条

    公开(公告)号：US3746904A

    公开(公告)日：1973-07-17

    申请号：US3746904D

    申请日：1971-05-07

    Applicant: RCA CORP

    Inventor： TORRE A

    IPC: H01J29/88 ,  H01J31/20 ,  H01J29/00 ,  H01J31/00

    CPC classification number: H01J31/205 ,  H01J29/88 ,  H01J2229/882

    Abstract: A cathode-ray tube including a glass envelope having a forward portion terminating in a viewing screen, a center portion, and a rear portion including an electron-gun assembly having at least one focusing lens therein. A first external conductive coating is on the forward portion of the envelope, and a second conductive coating spaced from the first conductive coating is on the rear portion of the envelope at least over the focusing lens. A longitudinal strip of a third external conductive coating on the center portion of the envelope connects the first and second conductive coatings.

    Abstract translation: 一种包括玻璃外壳的阴极射线管，其具有终止在观察屏幕中的前部，中心部分和后部，其包括其中具有至少一个聚焦透镜的电子枪组件。 第一外部导电涂层位于外壳的前部，并且与第一导电涂层间隔开的第二导电涂层至少在聚焦透镜的上方位于外壳的后部。 在外壳的中心部分上的第三外部导电涂层的纵向条带连接第一和第二导电涂层。

    Shadow-mask having rectangular apertures
    24.
    发明授权
    Shadow-mask having rectangular apertures 失效
    具有矩形孔的阴影

    公开(公告)号：US3663854A

    公开(公告)日：1972-05-16

    申请号：US3663854D

    申请日：1970-02-12

    Applicant: TOKYO SHIBAURA ELECTRIC CO

    Inventor： TSUNETA ASAHIDE ,  IKEGAKI MAKOTO

    IPC: H01J29/07 ,  H01J29/50 ,  H01J31/20 ,  H01J29/06 ,  H01J29/30

    CPC classification number: H01J31/205

    Abstract: The electron gun unit housed in a neck portion of a tube envelope consists of three electron guns corresponding to red, green and blue. The electron gun corresponding to blue is smaller in diameter than the remaining electron guns, and the axes of said electron guns are arranged to form an isosceles triangle in such a manner that the electron gun having a small diameter has its axis on the apex of the isosceles triangle. Fluorescent dots upon which electron beams emitted from said electron guns impinge are substantially in the form of thin rectangles or ellipses which extend substantially at right angles to the beam scanning direction. Adjacent to said fluorescent dots is disposed a shadow-mask having a plurality of rectangularly shaped beam passing holes.

    Abstract translation: 容纳在管壳的颈部的电子枪单元由对应于红色，绿色和蓝色的三个电子枪组成。 对应于蓝色的电子枪的直径小于剩余的电子枪的直径，并且所述电子枪的轴线被布置成形成等腰三角形，使得具有小直径的电子枪的轴线位于 等腰三角形。 从所述电子枪发射的电子束撞击的荧光点基本上是基本上与束扫描方向成直角延伸的薄的矩形或椭圆形的形式。 与所述荧光点相邻设置有具有多个矩形形状的光束通过孔的荫罩。

    Shadow mask type color picture tube with a fine mesh flexible particle shield between the gun and target portions
    25.
    发明授权
    Shadow mask type color picture tube with a fine mesh flexible particle shield between the gun and target portions 失效
    阴影面具类型彩色图像管与精细的MESH弹性颗粒屏幕之间的枪和目标部分

    公开(公告)号：US3560779A

    公开(公告)日：1971-02-02

    申请号：US3560779D

    申请日：1968-05-02

    Applicant: RCA CORP

    Inventor： MAY HOMER L

    IPC: H01J31/20 ,  H01J29/50 ,  H01J19/50

    CPC classification number: H01J31/205

    Abstract: A shadow-mask-type color picture tube, comprising a glass envelope including neck, funnel and target portions, a triplebeam electron gun structure mounted in the neck portion, a mosaic three-color phosphor screen on the inner wall of the target portion, and a multiapertured shadow mask mounted adjacent to the screen, is provided with a fine mesh flexible annular particle shield, e.g. of stainless steel mesh, attached to the gun and extending into continuous contact with the wall of the neck portion.

    Color cathode-ray tube with plural cathodes and three common grids each having same plurality of beam-defining apertures
    29.
    发明授权
    Color cathode-ray tube with plural cathodes and three common grids each having same plurality of beam-defining apertures 失效
    具有多个阴极的彩色阴极射线管和每个具有相同孔径的光束的三个共同网格

    公开(公告)号：US3639795A

    公开(公告)日：1972-02-01

    申请号：US3639795D

    申请日：1970-08-24

    Applicant: PHILIPS CORP

    Inventor： BARTEN PIET GERARD JOSEPH

    IPC: H01J31/20 ,  H01J29/50 ,  H01J29/00

    CPC classification number: H01J31/205

    Abstract: A single gun cathode-ray tube for the display of color television images including a separate cathode for each electron beam and common first, second, third and fourth grids, each having apertures for each beam. The distance between successive centers of the apertures in the third grid is less than 7 mms. and the dimension of the third grid at the apertures in the direction of the axis of the gun is not more than 4 mms.

    Abstract translation: 用于显示彩色电视图像的单个枪阴极射线管，包括用于每个电子束的单独的阴极和共同的第一，第二，第三和第四栅极，每个具有用于每个光束的孔。 第三格栅中的孔的连续中心之间的距离小于7mms。 并且在枪的轴线方向上的孔处的第三格栅的尺寸不大于4mms。

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