公开(公告)号：EP0834900A2

公开(公告)日：1998-04-08

申请号：EP97307329.9

申请日：1997-09-19

申请人： International Business Machines Corporation

发明人： Beeteson, John ,  Knox, Andrew Ramsay ,  Pietrzak, Christopher Carlo

IPC分类号： H01J29/68 ,  H01J29/86 ,  H01J29/04 ,  H01J31/12

CPC分类号： H01J17/498 ,  H01J29/028 ,  H01J29/04 ,  H01J29/481 ,  H01J29/68 ,  H01J29/863 ,  H01J29/864 ,  H01J2329/863

摘要： A display device comprises a screen. A back plate is sealed to the screen to form an evacuated chamber. Area cathode means is disposed between the back plate and the screen. A permanent magnet is disposed between the cathode and the screen. A two dimensional array of rows and columns of channels extends between opposite poles of the magnet for receiving electrons from the cathode means. An anode phosphor layer is disposed between screen and the magnet for receiving electrons from the channels. Grid electrode means between the area cathode means and the magnet controls flow of electrons from the cathode means into the channels. Anode means between the magnet and the anode phosphor layer controls flow of electrons from the channels towards the screen. In one such arrangement, the screen comprises a layer of a plastic material. In another such arrangement a plurality of spacers are disposed between the screen and the magnet. Each spacer has an elongate body having a larger cross sectional area at one end of the spacer tapering to a smaller cross sectional area at the other end of the spacer. In another such arrangement, and a plurality of spacers are disposed between the magnet and cathode. The spacers are located in recesses formed in the grid electrode means. In yet another such arrangement, the cathode means comprises a back-plate and a silica glass substrate peripherally sealed to the back-plate to produce a chamber. A gas is contained in the chamber. A layer of photo-sensitive material is disposed on the surface of the substrate external to the chamber. A cathode phosphor layer is disposed between the back plate and the substrate. A pair of electrodes facing each other from opposite sides of the chamber energises the gas to generate a plasma for exciting the phosphor to generate light energy to produce electron emissions from the photo-cathode.

摘要翻译： 显示装置包括屏幕。 背板被密封到屏幕上以形成抽真空室。 区域阴极装置设置在背板和屏幕之间。 永磁体设置在阴极和屏幕之间。 通道的行和列的二维阵列在磁体的相对极之间延伸，用于从阴极装置接收电子。 阳极荧光体层设置在屏幕和磁体之间，用于从通道接收电子。 区域阴极装置和磁体之间的栅电极意味着电子从阴极装置流入通道。 阳极意味着在磁体和阳极磷光体层之间控制电子从通道朝向屏幕的流动。 在一种这样的布置中，屏幕包括塑料材料层。 在另一种这样的布置中，多个间隔件设置在屏幕和磁体之间。 每个间隔件具有细长主体，其在间隔件的一端处具有较大的横截面积，在隔离物的另一端处渐缩成较小的横截面积。 在另一种这样的布置中，并且多个间隔物设置在磁体和阴极之间。 间隔件位于形成在栅格电极装置中的凹槽中。 在另一种这样的布置中，阴极装置包括背板和外围地密封到背板的石英玻璃基板以产生室。 气室内装有气体。 感光材料层设置在室外的基板的表面上。 阴极荧光体层设置在背板和基板之间。 从室的相对侧彼此面对的一对电极为气体供能以产生用于激发磷光体的等离子体，以产生光能从而产生来自光阴极的电子发射。

公开(公告)号：EP0187964A1

公开(公告)日：1986-07-23

申请号：EP85115857.6

申请日：1985-12-12

申请人： TDK Corporation

发明人： Watabe, Seiji ,  Yokoyama, Isao ,  Sasaki, Masanori ,  Toyoshima, Yotaro ,  Takahashi, Sumio ,  Maeda, Tsutomu

IPC分类号： H01J29/68 ,  H01J29/56

CPC分类号： H01J29/701

摘要： An electromagnetic deflection-distortion corrector comprises a plurality of permanent magnets (16) arranged around the tubular wall of a CRT display unit (10) of the electromagnetic deflection type, and adjuster means for moving each permanent magnet forward and backward, toward and away from the CRT wall, while at the same time rotating the direction of its magnetization.

公开(公告)号：EP0013041A1

公开(公告)日：1980-07-09

申请号：EP79200737.9

申请日：1979-12-07

申请人： Philips Electronics N.V.

发明人： Duys, Andréas Maria Wilhelmus c/o

IPC分类号： H01J29/68 ,  H04N9/28

CPC分类号： H01J29/56 ,  H01J2229/5681

摘要： By providing, in an electron gun in a cathode-ray tube, a non-rotationally symmetrical permanent magnetic lens against the control grid before the cross-over, an astigmatic cross-over is induced. As a result of this a spot is obtained on the display screen of the tube which shows only a small haze surrounding the spot and which has dimensions which do not vary considerably with potential variations at the control grid.