公开(公告)号：US06836061B2

公开(公告)日：2004-12-28

申请号：US10298069

申请日：2002-11-18

Applicant: Sun-Hun Kim

Inventor： Sun-Hun Kim

IPC: H01J2907

CPC classification number: H01J29/076

Abstract: A shadow mask for a color cathode-ray tube including a first portion on which a plurality of electron beam through holes are formed; and a second portion on which no electron beam through holes are formed, the second portion surrounding the first surface portion, wherein each of the plurality of electron beam through holes includes an electron beam exit hole, each of the electron beam exit holes of electron beam through holes formed at a periphery of the fist portion near the second portion having a first length Dh in a direction facing away from the center of the shadow mask that is greater than a second length Dv perpendicular to the direction facing away from the center of the shadow mask. Therefore, a vibration generated on the shadow mask is attenuated within an elastic range of shadow mask, and thereby the shadow mask is able to endure an external shock and a permanent distortion to the shadow mask can be prevented to ensure color purity of the color cathode-ray tube.

Abstract translation: 一种用于彩色阴极射线管的荫罩，包括形成多个电子束通孔的第一部分; 以及第二部分，其上没有形成电子束通孔，第二部分围绕第一表面部分，其中多个电子束通孔中的每一个包括电子束出射孔，电子束的每个电子束出射孔 形成在靠近第二部分的第一部分的周边处的通孔在远离荫罩中心的方向上具有第一长度Dh，该第二长度大于垂直于离开荫罩中心的方向的第二长度Dv 阴影面具 因此，荫罩产生的振动在荫罩的弹性范围内衰减，因此荫罩能够忍受外部冲击，并且可以防止荫罩的永久变形，以确保彩色阴极的色纯度 射线管。