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    • 18. 发明授权
    • Picture display device with addressing system
    • 具有寻址系统的图像显示设备
    • US5994828A
    • 1999-11-30
    • US20926
    • 1998-02-09
    • Siebe T. De ZwartGerardus G. P. Van GorkomTheunis S. Baller
    • Siebe T. De ZwartGerardus G. P. Van GorkomTheunis S. Baller
    • H01J29/82H01J31/12H01J29/70G09G3/22
    • H01J31/124
    • Thin-panel picture display device having a luminescent screen and a large emitting plane electron source, such as a large number of juxtaposed electron propagation ducts operating by means of wall interaction of electrons. By means of an addressing system, electrons extracted from ducts are directed towards desired locations on the luminescent screen. The addressing system comprises a preselection system and a fine-selection system with an intermediate spacer plate of insulating material provided with apertures for passing electrons arranged in between. To provide the possibility of applying large voltage differences across the thickness of the spacer plate, the walls of the apertures are at least partly coated with a coating of a low .delta. material having a low secondary emission coefficient (.delta..sub.max .ltoreq.3.5), particularly Si.sub.3 N.sub.4, AlN, Cr.sub.2 O.sub.3 or Y.sub.2 O.sub.3.
    • 具有发光屏和大型发射平面电子源的薄板图像显示装置,例如通过电子的壁相互作用操作的大量并置的电子传播导管。 通过寻址系统,从导管提取的电子被引导到发光屏上的期望位置。 寻址系统包括预选系统和精选系统,其具有绝缘材料的中间间隔板,该中间间隔板设置有用于使电子布置在其间的孔。 为了提供在间隔板的厚度上施加大的电压差的可能性,孔的壁至少部分地涂覆有具有低二次发射系数(δmax≤3.5)的低δ材料的涂层, 特别是Si 3 N 4,AlN,Cr 2 O 3或Y 2 O 3。