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1. 发明公开

EP0708474A1 Cathode-ray tube display unit in which unwanted radiant electric field from face plate of cathode-ray tube is decreased 失效
标题翻译： Kathodenstrahlröhreeinheitin die das vom BildschirmunerwünschtenStrahlungselektrischesfeld desKathoderstrahlröhrevermindert ist
公开(公告)号：EP0708474A1
公开(公告)日：1996-04-24
申请号：EP95116440.9
申请日：1995-10-18
申请人： HITACHI, LTD.
发明人： Jitsukata, Hiroshi , Kawakami, Katsuyuki , Sakurai, Soichi , Yoshioka, Hiroshi , Satoh, Yoshio
IPC分类号： H01J29/00
CPC分类号： H01J29/003 , H01J2229/0015
摘要： A cathode-ray tube display unit provided with a high voltage transformer (20) for supplying high voltage to an anode of a cathode-ray tube (1), a deflection yoke (6) having a horizontal deflection coil and a vertical deflection coil, and an interior conductive coating (13) formed on the inside of a glass vessel of the cathode-ray tube (1), in which there is provided an electrode (8) in the conductive coating form formed on an external wall face of a glass vessel at a funnel portion (2) being electrically separated from an exterior graphite coating (5) formed on an external surface of the cathode-ray tube (1) and connected to ground, and a circuit for applying reverse pulse voltage V₁ that satisfies (V 0 × C 0 ) > (V 1 × C 1 ) to the electrode in the conductive coating form is included. Where, it is assumed that flyback pulse voltage supplied to the deflection yoke means (6) is V₀, reverse pulse voltage having a polarity reverse to that of voltage generated in the interior conductive coating (13) is V₁, electrostatic capacity between the horizontal deflection coil and the interior conductive coating (13) is C₀, and electrostatic capacity between the electrode (8) in the conductive coating form and the interior conductive coating (13) is C₁.
摘要翻译：一种阴极射线管显示单元，其具有用于向阴极射线管（1）的阳极提供高电压的高压变压器（20），具有水平偏转线圈和垂直偏转线圈的偏转线圈（6）以及形成在阴极射线管（1）的玻璃容器的内部的内部导电涂层（13），其中设置有形成在玻璃的外壁面上的导电涂层形式的电极（8）在漏斗部分（2）上的容器与形成在阴极射线管（1）的外表面上并与地连接的外部石墨涂层（5）电分离，以及用于施加反向脉冲电压V1的电路，其满足（ V0 x C0）>（V1 x C1）与导电涂层形式的电极。其中，假定提供给偏转线圈装置（6）的回扫脉冲电压为V0，具有与在内部导电涂层（13）中产生的电压相反的极性的反向脉冲电压为V1，水平偏转之间的静电电容线圈和内部导电涂层（13）为C0，导电涂层形式的电极（8）和内部导电涂层（13）之间的静电电容为C1。

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