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16 条记录 (耗时 0.007 秒)

    Color cathode ray tube
    4.
    发明公开
    Color cathode ray tube 失效
    彩色阴极射线管

    公开(公告)号：EP0438139A3

    公开(公告)日：1992-01-29

    申请号：EP91100462.0

    申请日：1991-01-16

    申请人： KABUSHIKI KAISHA TOSHIBA

    发明人： Sugawara, Shigeru, c/o Intellectual Property Div. ,  Koshigoe, Shinpei, c/o Intellectual Property Div.

    IPC分类号： H01J29/62

    CPC分类号： H01J29/503 ,  H01J2229/4841 ,  H01J2229/4858 ,  H01J2229/4868 ,  H01J2229/4889 ,  H01J2229/4896

    摘要： A color cathode ray tube apparatus is provided with an electron gun assembly which emits three electron beams and focuses and converges the electron beam onto a phosphor screen. In the gun assembly, the electron beams generated from cathodes (2) are accelerated and controlled by first and second grids (3, 4) and pass through third, fourth and fifth grids (5, 6, 7). The third and fourth grids (5, 6) have single rectangular apertures (10, 11) common to the three electron beams, respectively, which are faced to each other and have different heights and widths. Each of the fourth and fifth grids (6, 7) have individual apertures which allow the corresponding electron beams to pass therethrough, respectively. The third and fifth grids (5, 7) is maintained at fixed potentials and a potential of the fourth grid (6) is adjusted. Thus, individual focusing and convergence electron lenses (L120) are formed between the fourth and fifth grids (5, 6). A single and common asymmetrical electron lens (L110) is formed between the third and fourth grids (5, 6), when a potential difference between the third and fourth grids (5, 6) is produced. A misconvergence of three electron beams produced due to the adjustment of the individual electron lenses (L120) is corrected by the common asymmetrical electron lens (L110) in such a manner that the side electron beams are deflected in accordance with the potential difference.

    Electron gun for color cathode-ray tube
    7.
    发明公开
    Electron gun for color cathode-ray tube 失效
    彩色阴极射线管电子枪

    公开(公告)号：EP0489432A1

    公开(公告)日：1992-06-10

    申请号：EP91120874.2

    申请日：1991-12-05

    申请人： GOLDSTAR CO. LTD.

    发明人： Koh, Nam Je

    IPC分类号： H01J29/50

    CPC分类号： H01J29/503 ,  H01J2229/4858 ,  H01J2229/4872

    摘要： An electron gun for a color cathode-ray tube for enhancing the convergence characteristics and removing the flare of beam spot formed at the boundary of screen, comprising first and second (9) grid electrodes and a first accelerating and focusing electrode (10) each having first, second and third electron beam passing holes (91-93) for allowing first, second and third electron beams emitted from cathodes to pass therethrough so as to be accelerated and focused; first and third slots formed around said first and third electron beam passing holes and having asymmetrical depth for allowing equipotential intervals at inner side to be larger than equipotential intervals at outer side, the first and third electron beam passing holes being symmetrical to each other with respect to the second electron beam passing hole; and a second slot formed around the second electron beam passing hole and provided with a symmetrical depth so as to have same equipotential interval at its inner and outer side with respect to the center of the second electron beam passing hole.

    摘要翻译： 一种彩色阴极射线管用的电子枪，用于增强会聚特性并消除形成在屏幕边界处的束斑的闪耀，该电子枪包括第一和第二（9）栅极和第一加速和聚焦电极（10），每个第一加速和聚焦电极 第一，第二和第三电子束通过孔（91-93），用于允许从阴极发射的第一，第二和第三电子束通过，从而被加速和聚焦; 形成在所述第一和第三电子束通过孔周围并具有非对称深度以允许内侧的等电位间隔大于外侧的等电位间隔的第一和第三槽，所述第一和第三电子束通孔相对于彼此对称 到第二电子束通孔; 以及一个形成在第二电子束通孔周围并具有对称深度的第二槽，以使其相对于第二电子束通孔的中心在其内侧和外侧具有相同的等电位间隔。

    Multistep focusing electron gun for cathode ray tube
    10.
    发明公开
    Multistep focusing electron gun for cathode ray tube 失效
    多用途聚焦电子枪用于阴极射线管

    公开(公告)号：EP0436401A3

    公开(公告)日：1991-12-18

    申请号：EP90314457.4

    申请日：1990-12-31

    申请人： SAMSUNG DISPLAY DEVICES CO., LTD.

    发明人： Cho, Seok-rae

    IPC分类号： H01J29/48 ,  H01J29/50

    CPC分类号： H01J29/485 ,  H01J29/503 ,  H01J2229/4858 ,  H01J2229/4862 ,  H01J2229/4872

    摘要： A multistep focusing electron gun for a cathode ray tube comprising at least a unipotential auxiliary lens (G5 to G7) and a bipotential major lens (G7, G8). The electron beam passing hole of the middle electrode (G6) of three successive electrodes forming the unipotential auxiliary lens which is supplied with a low potential is in the form of a equilateral parallelogram and has dimensions such that the electron beam passing holes of the electrodes disposed at the front and rear of the middle electrode can be circumscribed. Thus, the intensity of the unipotential auxiliary lens is weakened without reducing the mechanical strength of the electrode, and also the change of the relative position between the electrodes resulted from the structure change is inhibited.