CRT AND ITS PRODUCTION METHOD

PURPOSE:To prevent a spark from occurring between a low voltage electrode and a bulb neck portion by forming a thin and high resistance film by deposition on a region inside the bulb neck portion facing the low voltage electrode so as to maintain said region at a relatively low and stable potential...

Full description

Saved in:
Bibliographic Details
Main Authors ASHIZAKI SHIGEYA, KIMURA MASAMICHI
Format Patent
LanguageEnglish
Published 31.10.1983
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
Online AccessGet full text

Cover

More Information
Summary:PURPOSE:To prevent a spark from occurring between a low voltage electrode and a bulb neck portion by forming a thin and high resistance film by deposition on a region inside the bulb neck portion facing the low voltage electrode so as to maintain said region at a relatively low and stable potential during an operation. CONSTITUTION:A thin and high resistance film 10 is arranged on a region inside a bulb neck portion 1a mainly facing a G2 electrode 4. The high resistance film 10 is obtained by evaporating the surface portion of the G2 electrode 4 made of stainless steel, iron, nickel alloy or kovar, etc. in the vacuum. This high resistance film 10 is the thickest at said region facing the G2 electrode 4 and becomes thinner as it is separated from said region in sequence. The thickness at said region is such that the color can be slightly visible to the naked eye.
Bibliography:Application Number: JP19820070012