发明公开
- 专利标题: A SADDLE SHAPED DEFLECTION WINDING HAVING A WINDING SPACE WITHIN A PREDETERMINED ANGULAR RANGE
- 专利标题(中): 马鞍形偏转有绕组区域内的预定角度区域
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申请号: EP97954958.0申请日: 1997-12-19
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公开(公告)号: EP0946964A1公开(公告)日: 1999-10-06
- 发明人: Azzi, Nacerdine , Masson, Olivier
- 申请人: THOMSON TUBES & DISPLAYS S.A.
- 申请人地址: 46 Quai A. Le Gallo 92648 Boulogne Cedex FR
- 专利权人: THOMSON TUBES & DISPLAYS S.A.
- 当前专利权人: THOMSON TUBES & DISPLAYS S.A.
- 当前专利权人地址: 46 Quai A. Le Gallo 92648 Boulogne Cedex FR
- 代理机构: Ruellan-Lemonnier, Brigitte, et al
- 优先权: FR19960015732 19961220; FR19970005473 19970502
- 国际公布: WO1998028773 19980702
- 主分类号: H01J29
- IPC分类号: H01J29
摘要:
A deflection yoke for a color cathode ray tube includes a saddle shaped vertical deflection coil and a saddle shaped horizontal deflection coil. The horizontal deflection coil includes winding turns forming a pair of side portions having a winding window therebetween extending free of conductor wires. Each of the side portions has first and second winding spaces. The first winding space forms an aperture occupying an angular range between 30 and 45 degrees and having a length dimension greater than one half a length dimension of the window. A corner portion of the second winding space is disposed in a Z-axis coordinate selected in a range between a Z-axis coordinate of an end of the window, close to the electron gun of the tube, and a Z-axis coordinate, closer to the screen of the tube. The length of the range is approximately 10 % of a length of the window. Correction of convergence error, horizontal coma error, coma parabola error and trapezium error is obtained without using field shapers such as shunts or magnets.
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