| 摘要 |
PURPOSE:To correct securely circular distortion and prevent generation of a striped raster by reducing the surface resistance of an especially needed part of a ferrite deflection plate in a usual CRT such as a television picture tube. CONSTITUTION:So far as the ferrite deflection plate 9a on one side concerns, low resistance layers 60 are formed on both its inner surface 9a1 and side end surface which makes contact with a free end of its metal contact piece 17 while both layers are connected to each other. Also, with regard to the ferrite deflection plate 9b on the other side low resistance layers 60 are formed on both its inner surface 9b and a front end surface which makes contact with a spring 12 mentioned before while both layers are connected to each other. When the surface specific resistance of the ferrite deflection plate is specified 200kOMEGAcm or less preferably 100kOMEGAcm or less, generation of a circular distortion or stripe can be prevented. |
