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21. 发明授权

US06201345B1 Cathode-ray tube with electron beams of increased current density 失效
标题翻译：阴极射线管与电子束的电流密度增加
公开(公告)号：US06201345B1
公开(公告)日：2001-03-13
申请号：US09136397
申请日：1998-08-19
申请人： Satoru Nakagawa , Yoji Yamamoto
发明人： Satoru Nakagawa , Yoji Yamamoto
IPC分类号： H01J2948
CPC分类号： H01J29/04 , H01J29/503 , H01J2229/507
摘要： A cathode-ray tube with high image quality in which electron beams with higher current density than the electron-emitting ability of cathodes are formed and a driving voltage of the cathodes can be decreased. A cathode-ray tube comprises a glass face-panel, a glass funnel connected to the rear part of the face-panel, and an electron gun for emitting electron beams that is contained in a neck portion of the funnel. On the peripheral surface of the funnel, a deflection yoke for deflecting the electron beams emitted from the electron gun is mounted. A phosphor dot for three colors of red, green and blue is applied on the inner surface of the face-panel, thus forming a phosphor screen surface. In the vicinity of the inner surface of the face-panel, a shadow mask is arranged substantially in parallel with the phosphor screen surface. Between the phosphor screen surface of the face-panel and the cathodes in the electron gun, a means for superimposing a plurality of electron beams on the predetermined phosphor dot is provided.
摘要翻译：具有高图像质量的阴极射线管，其中形成具有比阴极的电子发射能力更高的电流密度的电子束，并且阴极的驱动电压可以降低。阴极射线管包括玻璃面板，连接到面板的后部的玻璃漏斗和用于发射包含在漏斗的颈部中的电子束的电子枪。在漏斗的圆周表面上安装用于偏转从电子枪发射的电子束的偏转线圈。在面板的内表面上涂敷红色，绿色，蓝色三种荧光体，形成荧光屏面。在面板的内表面附近，荫罩基本上与荧光屏表面平行布置。在面板的荧光屏表面和电子枪的阴极之间，提供了将多个电子束叠加在预定的荧光点上的装置。

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