Vacuum fluorescent display having x-ray shielding cap
    2.
    发明授权
    Vacuum fluorescent display having x-ray shielding cap 失效
    具有x射线屏蔽帽的真空荧光显示器

    公开(公告)号:US06914380B2

    公开(公告)日:2005-07-05

    申请号:US09938698

    申请日:2001-08-23

    摘要: A vacuum fluorescent display includes a cathode electrode, grid electrode, anode electrode, at least one envelope, phosphor screen, and cap. The cathode electrode emits electrons. The grid electrode extracts the electrons from the cathode electrode. The anode electrode accelerates the electrons extracted from the cathode electrode. The envelope accommodates the cathode electrode, grid electrode, and anode electrode in a vacuum space and has a phosphor screen plate having light transmission properties. The phosphor screen is formed on an inner surface of the phosphor screen plate of the envelope and adapted to emit light upon bombardment of the electrons accelerated by the anode electrode. The cap is made of an X-ray shielding material and supported outside the envelope so as to surround the phosphor screen plate of the envelope through a gap. The cap has a light exit portion from which the light emitted from the phosphor screen emerges through the phosphor screen plate of the envelope.

    摘要翻译: 真空荧光显示器包括阴极电极,栅电极,阳极电极,至少一个外壳,荧光屏和盖。 阴极发射电子。 栅电极从阴极提取电子。 阳极电极加速从阴极电极提取的电子。 信封在真空空间中容纳阴极电极,栅电极和阳极电极,并具有透光性能的荧光屏板。 荧光屏形成在外壳的荧光屏板的内表面上,并且适于在由阳极电极加速的电子轰击时发光。 盖由X射线屏蔽材料制成,并被支撑在信封外面,以通过间隙包围信封的荧光屏板。 盖具有光出射部分,从荧光屏发射的光通过信封的荧光屏板出现。