公开(公告)号：US5668448A

公开(公告)日：1997-09-16

申请号：US518060

申请日：1995-08-22

申请人： Edwin A. Montie ,  Alfred Ketting ,  Ronald Van Der Wilk

发明人： Edwin A. Montie ,  Alfred Ketting ,  Ronald Van Der Wilk

IPC分类号： H01J29/50 ,  H01J29/56 ,  H01J29/62 ,  H01J29/96 ,  H01J29/58

CPC分类号： H01J29/96 ,  H01J29/503 ,  H01J29/566 ,  H01J2229/4841 ,  H01J2229/4872 ,  H01J2229/966

摘要： A picture display device comprises an evacuated envelope and is provided at a first side with an electroluminescent display screen and at an opposite side with an electron gun (6). Between the electron gun (6) and the display screen, the device comprises deflection means with which an electron beam generated by the electron gun (6) can be deflected during operation. The electron gun (6) has at least an electron beam-generating portion (20) and is provided with a main lens system (40) having a first electrode (41), a final electrode (45) and at least one intermediate electrode (42-44) across which a main lens voltage is gradually applied step-wise during operation so as to form an electron-optical main focusing lens. The gun is further provided with means for presenting a dynamic potential (V.sub.d) to at least an electrode (41) of the main lens system (40), which is the first electrode viewed in the direction of propagation of the electron beam (7-9). For an increased dynamic focusing, a coupling capacitor (50) is arranged at least between said first electrode (41) and the subsequent electrode (42) of the main lens system (40).

摘要翻译： 图像显示装置包括真空外壳，并且在第一侧设置有电致发光显示屏，并且在与电子枪（6）相对的一侧。 在电子枪（6）和显示屏之间，该装置包括偏转装置，在操作期间由电子枪（6）产生的电子束可以偏转。 电子枪（6）至少具有电子束产生部分（20），并且具有主透镜系统（40），其具有第一电极（41），最终电极（45）和至少一个中间电极 42-44），在操作期间逐步地施加主透镜电压以形成电子 - 光学主聚焦透镜。 枪还具有用于向主透镜系统（40）的至少一个电极（41）呈现动态电位（Vd）的装置，该主透镜系统（40）是从电子束（7- 9）。 对于增加的动态聚焦，耦合电容器（50）至少设置在主透镜系统（40）的所述第一电极（41）和后续电极（42）之间。

公开(公告)号：US5712538A

公开(公告)日：1998-01-27

申请号：US577459

申请日：1995-12-22

申请人： Petrus N. J. Vis ,  Rudolf Kemner ,  Edwin A. Montie ,  Alfred Ketting ,  Adriaan J. Hoeven

发明人： Petrus N. J. Vis ,  Rudolf Kemner ,  Edwin A. Montie ,  Alfred Ketting ,  Adriaan J. Hoeven

IPC分类号： A61B6/00 ,  G09G1/20 ,  H04N9/16 ,  H04N9/20 ,  H01J29/50

CPC分类号： H04N9/16

摘要： A phosphor screen in a display device is scanned by separate electron beams in order to generate images of different frequency content in one color in substantially the same part of the phosphor screen. The different images can be perceived as a composite image for some time. The individual electron beams can be modulated by means of a cathode modulator on the basis of a high frequency and a low frequency component of an electronic image signal or on the basis of an image component and a text component of an electronic image signal. The modulations of the individual electron beams may be slightly delayed relative to one another in order to avoid overloading of the phosphor material.

摘要翻译： 通过单独的电子束扫描显示装置中的荧光屏，以在荧光屏的基本相同的部分中产生一种颜色的不同频率含量的图像。 不同的图像可以被视为合成图像一段时间。 可以基于电子图像信号的高频和低频分量，或者基于电子图像信号的图像分量和文本分量，借助于阴极调制器来调制各个电子束。 单个电子束的调制可以相对于彼此稍微延迟，以避免荧光体材料的过载。