Method of manufacturing a display tube
    1.
    发明公开
    Method of manufacturing a display tube 失效
    韦尔法罕zur Herstellung einerBildwiedergaberöhre。

    公开(公告)号:EP0060586A1

    公开(公告)日:1982-09-22

    申请号:EP82200243.2

    申请日:1982-02-26

    IPC分类号: H01J9/24 C03B25/00 H01J9/38

    CPC分类号: C03B29/06 H01J9/244

    摘要: Upon adhering the display screen to the cone and upon evacuating the display tube, the display screen and the cone are subjected to temperature treatments in which stresses occur in the display screen which may cause fracture of the display tube. In order to reduce the possibility of fracture, during the temperature treatment measures are taken which influence the temperature distribution over the display screen and the cone in such manner that the occurrence of stresses in the display screen is counteracted. In an embodiment, in the furnace 60 for ahdering the display screen 41 to the cone 42, a heat shield 46 is provided at some distance above the central part of the display screen 41. As a result of the heat shield 46, fewer tubulences of the heated air occur at the central part of the display screen 41, with which the display tube 40 is warmed up and which is conveyed from the neck 43 past the display tube 40. The display screen 41 thus is warmed up more slowly, which considerably reduces the value of the stresses occurring in the display screen 41.

    摘要翻译: 在将显示屏幕粘附到锥体上并且在抽空显示管时,显示屏幕和锥体经受温度处理,其中在显示屏幕中产生可能导致显示管断裂的应力。 为了降低断裂的可能性,在温度处理中,采取这样的措施,其以显示屏幕上的应力的发生被抵消的方式影响显示屏和锥体上的温度分布。 在一个实施例中,在用于将显示屏41向锥体42提升的炉60中,在显示屏41的中心部分上方设置有隔热罩46。作为隔热罩46的结果,更少的管状 加热的空气发生在显示屏41的中央部分,显示管40被加热并从颈部43传送通过显示管40.显示屏41因此被加热得更慢,这显着地 降低在显示画面41中发生的应力的值。