发明名称 |
Electron gun assembly and cathode ray tube apparatus |
摘要 |
The electron beam generating section in an electron gun assembly includes a cathode having an electron emitting surface. The surface of the cathode is divided into at least three regions of first, second and third regions which have different electron emission capabilities. The first region is arranged in the center of the surface of the cathode. The second region has its portions arranged on opposite sides of the first region in the horizontal direction. The third region has its portions arranged on opposite sides of the first region in the vertical direction.
|
申请公布号 |
US6653771(B2) |
申请公布日期 |
2003.11.25 |
申请号 |
US20010933840 |
申请日期 |
2001.08.22 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
ISHIHARA TOMONARI;SATOU KAZUNORI;UENO HIROFUMI |
分类号 |
H01J29/04;H01J29/50;(IPC1-7):H01J29/50;H01J1/20 |
主分类号 |
H01J29/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|