公开(公告)号：US06943490B2

公开(公告)日：2005-09-13

申请号：US10322386

申请日：2002-12-13

申请人： Chang Ju Lim ,  Jae Jung Kim ,  Hwan Seok Choe

发明人： Chang Ju Lim ,  Jae Jung Kim ,  Hwan Seok Choe

IPC分类号： H01J29/76 ,  H01J29/70

CPC分类号： H01J29/76

摘要： A deflection yoke mounted on a rear portion of a cathode ray tube (CRT) to deflect an electron beam emitted from an electron gun of the CRT includes a coil separator mounted on the CRT, a horizontal deflection coil mounted on an inside of the coil separator, having a first section generating a horizontal deflection magnetic field deflecting the electron in a horizontal direction and having a first radius, having a second section generating a magnetic field to weaken the horizontal deflection magnetic field and having a second radius different from the first radius, a vertical deflection coil mounted on an outside of the coil separator and generating a vertical deflection magnetic field deflecting the electron beam in a vertical direction, and a ferrite core covering a portion of the vertical deflection coil to strengthen the horizontal deflection magnetic field and the vertical deflection magnetic field. Since the magnetic field of the second section is weakened, a beam strike neck (BSN) distance is improved, and a deflection sensitivity is improved.

摘要翻译： 安装在阴极射线管（CRT）的后部以偏转从CRT的电子枪发射的电子束的偏转线圈包括安装在CRT上的线圈分离器，安装在线圈分离器内侧的水平偏转线圈 具有产生在水平方向上偏转电子并具有第一半径的水平偏转磁场的第一部分，具有产生磁场的第二部分，以削弱水平偏转磁场并且具有不同于第一半径的第二半径， 安装在线圈分离器的外侧的垂直偏转线圈，并产生沿垂直方向偏转电子束的垂直偏转磁场，以及覆盖垂直偏转线圈的一部分的铁氧体磁心，以加强水平偏转磁场和垂直偏转线圈 偏转磁场。 由于第二部分的磁场变弱，射束撞击颈部（BSN）距离得到改善，并且改善了偏转灵敏度。