发明授权
- 专利标题： Colour cathode ray tube having a screening cap
- 专利标题（中）： 彩色阴极射线管，其具有筛分帽
-
申请号： US143672申请日： 1993-10-27
-
公开(公告)号： US5408158A公开(公告)日： 1995-04-18
- 发明人: Theodoor C. A. Hens , Jean Winters , Adrianus J. Van Mensvoort
- 申请人： Theodoor C. A. Hens , Jean Winters , Adrianus J. Van Mensvoort
- 申请人地址： NY New York
- 专利权人： U.S. Philips Corporation
- 当前专利权人： U.S. Philips Corporation
- 当前专利权人地址： NY New York
- 优先权： EPX92203307 19921028
- 主分类号： H01J29/02
- IPC分类号： H01J29/02 ; H01J29/06 ; H01J29/07 ; H01J29/80
摘要：
A color cathode ray tube comprises a color selection electrode which is secured to a frame and a magnetic screening cap. The frame has two diaphragm portions one of which is located near the color selection electrode and the other is further removed from the color selection electrode. The distance between the electron beams deflected towards the outermost apertures of the color selection electrode and the further removed diaphragm is at least 1 cm. By virtue thereof, the negative influence of the frame on the screening effect of the magnetic screening cap is substantially reduced.