Field-discharge fluorescent-display with fluorescent layer inclu

Details Field-discharge fluorescent-display with fluorescent layer inclu Field-discharge fluorescent-display with fluorescent layer inclu

1995-11-17

1998-05-12

Horabik, Michael

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

H01J 162

Patent

active

057511071

ABSTRACT:
A fluorescent display apparatus performs a desired display by, in a vacuum state, irradiating its fluorescent layer with electrons discharged from electric-field electron discharge devices. The fluorescent layer is formed by a fluorescent substance and low-fusing-point glass, serves as an adhesive agent for the fluorescent substance. Paste obtained by mixing, for example, fluorescent substance powder, low-fusing-point glass powder and a binder is applied to a substrate or the like, followed by sintering at a temperature higher than the fusing point of the low-fusing-point glass. Solder is used to seal the space in the apparatus. An exhaust port is placed on a frame in a vacuum chamber while making the exhaust port face downwards. Then, spherical solder disposed between the frame and the foregoing exhaust port is heated and melted to be injected into the exhaust port. In order to raise the degree of vacuum, getter material is formed on the inner surface of the foregoing space to have a thin film shape. The getter material is irradiated with laser beams to be vaporized and activated after air in the foregoing space has been exhausted and the space has been sealed up.

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