公开(公告)号：US06922010B2

公开(公告)日：2005-07-26

申请号：US09964189

申请日：2001-09-26

申请人： Takayasu Komatsu ,  Hirofumi Hideshima ,  Akira Makita ,  Yutaka Matsumoto ,  Takuya Ogio

发明人： Takayasu Komatsu ,  Hirofumi Hideshima ,  Akira Makita ,  Yutaka Matsumoto ,  Takuya Ogio

IPC分类号： H01J29/07 ,  H01J29/80

CPC分类号： H01J29/07 ,  H01J2229/0755

摘要： The present invention provides a shadow mask having an improved resistance to an impact such as vibration or dropping so as to keep a constant quality of a color cathode-ray tube. The object is achieved by a shadow mask in which throughholes are formed, each of the throughholes 2a and 2b having a rear side hole portion 4a or 4b through which an electron beam enters and a front side hole portion 3a or 3b through which the electron beam is emitted so as to form a beam spot having a prescribed shape on a surface to be irradiated; wherein, each of the throughholes 2a and 2b has a ridge portion 8, 8b or 8e formed by intersection of a taper surface 10, 10b or 10e of the rear side hole portion 4a or 4b and a taper surface 6, 6b or 6e of the front side hole portion 3a or 3b; the taper size T represented by a value a half the difference between the hole width S at end 7, 7b or 7e of the front side hole portion 3a or 3b and the hole width Q at the ridge portion 8, 8b or 8e is within a range of from 30 to 40% of the thickness t of the shadow mask; and the ridge portion is formed at a sectional height of up to 35 μm from the end 9 of the rear side hole portion 4a or 4b.

摘要翻译： 本发明提供了一种具有改善的抵抗诸如振动或掉落的冲击的荫罩，从而保持彩色阴极射线管的质量不变。 该目的通过形成有通孔的荫罩实现，每个通孔2a和2b具有电子束进入的后侧孔部分4a或4b，以及前侧孔部分3a或3 b，通过该电子束发射电子束以在待照射的表面上形成具有规定形状的束斑; 其中，每个通孔2a和2b具有通过后侧孔部分4a或4b的锥形表面10,10b或10e与锥形部分相交形成的脊部分8,8b或8e， 前侧孔部分3a或3b的表面6,6b或6e; 锥形尺寸T由前侧孔部分3a或3b的端部7,7b或7e处的孔宽S与脊部8,8b之间的孔宽度Q之间的差的一半的值表示 或8e在荫罩的厚度t的30〜40％的范围内; 并且脊部形成为距后侧孔部分4a或4b的端部9的截面高度高达35μm。

公开(公告)号：US06722938B1

公开(公告)日：2004-04-20

申请号：US09655191

申请日：2000-09-05

申请人： Takayasu Komatsu ,  Hiromitsu Ochiai ,  Akira Makita ,  Hirofumi Hideshima ,  Takuya Ogio ,  Toshimu Watanabe

发明人： Takayasu Komatsu ,  Hiromitsu Ochiai ,  Akira Makita ,  Hirofumi Hideshima ,  Takuya Ogio ,  Toshimu Watanabe

IPC分类号： H01J912

CPC分类号： H01J9/142 ,  H01J2229/0755 ,  H01J2229/0766 ,  Y10T225/12

摘要： A shadow mask is formed from a plate member comprising an outer frame portion, a body portion of a shadow mask having an outer peripheral line formed through an etching process and a plurality of connection portions through which the body portion of the shadow mask is supported by the outer frame portion. The shadow mask is formed from the plate member by removing the outer frame portion from the body portion of the shadow mask. In this process, a break portion is formed to the shadow mask by removing the outer frame portion so as to be recessed inward from the outer peripheral line of the shadow mask.

摘要翻译： 荫罩由包括外框部分，阴影掩模的主体部分，通过蚀刻工艺形成的外周线和多个连接部分构成的荫罩形成，荫罩的主体部分通过该多个连接部分被 外框部分。 通过从荫罩的主体部分移除外框架部分，由板构件形成荫罩。 在该过程中，通过从外框部分移除以从荫罩的外周线向内凹入的方式，对荫罩形成断开部分。