公开(公告)号：US06768252B2

公开(公告)日：2004-07-27

申请号：US09888560

申请日：2001-06-26

申请人： Beung Jae Yang

发明人： Beung Jae Yang

IPC分类号： H01J2906

CPC分类号： H01J29/06

摘要： A magnetic shield structure for a color cathode ray tube is provided which can improve color chrominance, rotation redundancy and magnetic field redundancy of the color cathode ray tube, by preventing an electron beam from being moved due to an earth magnetic field, so that the electron beam can be landed on a designated fluorescent material. Accordingly, in a color cathode ray tube including a tension mask assembly comprising a tension mask for color-discriminating an electron beam, and a main frame and a sub frame for supporting the tension mask, and a magnetic shield structure disposed at a funnel, for preventing deflection and distortion of the electron beam, the magnetic shield structure includes a main unit for shielding the inner sides of the funnel, and a front unit where the tension mask assembly is inserted.

摘要翻译： 提供了一种用于彩色阴极射线管的磁屏蔽结构，其可以通过防止电子束由于地磁场而移动而改善彩色阴极射线管的色度，旋转冗余度和磁场冗余度，使得电子 光束可以落在指定的荧光材料上。 因此，在包括张力掩模组件的彩色阴极射线管中，包括用于对电子束进行颜色鉴别的张力掩模，以及用于支撑张力掩模的主框架和子框架，以及设置在漏斗处的磁屏蔽结构， 防止电子束的偏转和变形，磁屏蔽结构包括用于屏蔽漏斗的内侧的主单元和插入张力罩组件的前单元。