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1. 发明授权

US5841224A Second grid for an electron gun having apertures and rotary asymmetrical portions facing the first and third grids 失效
标题翻译：具有孔的电子枪的第二格栅和面向第一和第三格栅的旋转不对称部分
公开(公告)号：US5841224A
公开(公告)日：1998-11-24
申请号：US361376
申请日：1994-12-22
申请人： Won Hyun Kim , Hee Won Yun , Sung Kil Kim , Hyun Chul Kim , Sung Ho Cho , Sung Ki Ahn
发明人： Won Hyun Kim , Hee Won Yun , Sung Kil Kim , Hyun Chul Kim , Sung Ho Cho , Sung Ki Ahn
IPC分类号： H01J29/50 , H01J29/56 , H01J29/51
CPC分类号： H01J29/503
摘要： An electron gun for a large-sized color cathode ray tube has three cathodes heated by a heater for emitting thermoelectrons, a first grid for controlling emitted electron beams on one side of the cathodes, a second grid for attracting the thermoelectrons gathered on the cathodes on one side of the first grid, a plurality of electrodes sequentially arranged on the second grid for accelerating and focusing the incoming electron beams, and a bead glass for fixing the electrodes spaced apart by predetermined distances, in which the thickness of the second grid is varied to decrease the divergence angle of the electron beams, and horizontal slits being rotary asymmetrical portions are formed in both sides around electron beam passing holes to contrive a quadrupole effect, thereby compensating for distortion of the electron beams on the periphery of a screen caused by a deflection aberration to thus improve resolution of large-sized Brawn tubes.
摘要翻译：用于大尺寸彩色阴极射线管的电子枪具有由用于发射热电子的加热器加热的三个阴极，用于控制阴极一侧上的发射电子束的第一栅极，用于吸引聚集在阴极上的热电子的第二栅极第一栅格的一侧，顺序地布置在第二栅极上用于加速和聚焦入射电子束的多个电极，以及用于固定间隔开预定距离的电极的玻璃珠，其中第二栅极的厚度变化以减小电子束的发散角，并且在电子束通过孔周围的两侧形成为旋转不对称部分的水平狭缝，以实现四极效应，从而补偿由屏幕引起的屏幕周围的电子束的变形从而改善大尺寸Brawn管的分辨率。

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