PHOSPHOR FOR LOW VOLTAGE AND ITS PRODUCTION

PURPOSE: A process for preparing a phosphor for low voltage by attaching fine zinc metal powders to a zinc gallate phosphor is provided which reduces a fraction defective of a film in the manufacture of a phosphor. CONSTITUTION: A process comprises the steps of mixing zinc oxide, gallium oxide and a...

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Bibliographic Details
Main Authors SONG, MI RAN, YU, IL, YU, YONG CHAN
Format Patent
LanguageEnglish
Korean
Published 15.07.2000
Edition7
Subjects
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Summary:PURPOSE: A process for preparing a phosphor for low voltage by attaching fine zinc metal powders to a zinc gallate phosphor is provided which reduces a fraction defective of a film in the manufacture of a phosphor. CONSTITUTION: A process comprises the steps of mixing zinc oxide, gallium oxide and a flux, calcining the mixture at 1,100 to 1,300°C, calcining the above calcined material once more, attaching zinc oxide to the calcined material, and heat treating the zinc oxide-attached material at 500 to 1,000°C under reductive atmosphere. The zinc oxide is Zno, the gallium oxide is Ga2O3, a flux is Li3PO4. The phosphor film prepared with the phosphor is excellent in film characteristics and provides uniform luminescent surface. 형광막 불량을 감소시킬 수 있으며 균일한 발광 특성을 가진 형광막을 제공할 수 있는 저전압용 형광체 제조 방법을 제공하기 위한 것으로서, 아연 산화물, 갈륨 산화물 및 융제(flux)를 혼합하고, 이 혼합물을 1100-1300℃에서 1차 소성한 후, 800-1000℃에서 2차 소성한다. 이 2차 소성된 물질에 아연 옥사이드(ZnO)를 부착시킨 후, 아연 옥사이드가 부착된 물질을 환원 분위기하, 500-1000℃에서 열처리하여 미립의 아연 금속 분말이 균일하게 부착된 형태의 저전압용 형광체를 제공한다.
Bibliography:Application Number: KR19980057490