FLUORESCENT SCREEN AND ITS FORMING METHOD

PURPOSE:To provide a fluorescent screen emitting light in high luminous efficiency by an electron beam of 0.1 to 2kV accelerating voltage. CONSTITUTION:A heat resistant protecting layer is formed of potassium silicate, silica, Zn in a surface of phosphor grains. Photosensitive resin having a styrilp...

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Bibliographic Details
Main Authors OGAWA YUKIO, KATAOKA FUMIAKI, INOUE AKIRA, YAMAURA TATSUO
Format Patent
LanguageEnglish
Published 02.05.1995
Edition6
Subjects
ADHESIVES
BASIC ELECTRIC ELEMENTS
CHEMISTRY
DYES
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Summary:PURPOSE:To provide a fluorescent screen emitting light in high luminous efficiency by an electron beam of 0.1 to 2kV accelerating voltage. CONSTITUTION:A heat resistant protecting layer is formed of potassium silicate, silica, Zn in a surface of phosphor grains. Photosensitive resin having a styrilpyridinium sensitive group is mixed with the phosphor grain to form a slurry liquid. The slurry liquid is used to form a fluorescent screen by a prescribed pattern on a substrate by a photolithographic method. The substrate formed with the fluorescent screen is burned at 450 to 480 deg.C. A killer component for reducing luminous efficiency of a phosphor is not contained in a raw substance. The photosensitive resin is provided with high heat stability but heat decomposed by high temperature burning, to prevent a binder component or the like, left to be provided, from worsening luminous brightness of the phosphor. Against the high temperature burning, the phosphor is coated with the heat resistant protecting layer. A surface is not oxidized, to prevent the luminous efficiency of the phosphor from worsening.
Bibliography:Application Number: JP19930257928