KR920006473A - Surface treatment method of calcium sulfide-based phosphor - Google Patents

Surface treatment method of calcium sulfide-based phosphor Download PDF

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Publication number
KR920006473A
KR920006473A KR1019900014005A KR900014005A KR920006473A KR 920006473 A KR920006473 A KR 920006473A KR 1019900014005 A KR1019900014005 A KR 1019900014005A KR 900014005 A KR900014005 A KR 900014005A KR 920006473 A KR920006473 A KR 920006473A
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South Korea
Prior art keywords
calcium sulfide
phosphor
based phosphor
surface treatment
treatment method
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KR1019900014005A
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Korean (ko)
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KR930010518B1 (en
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박영배
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김정배
삼성전관 주식회사
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Priority to KR1019900014005A priority Critical patent/KR930010518B1/en
Publication of KR920006473A publication Critical patent/KR920006473A/en
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Publication of KR930010518B1 publication Critical patent/KR930010518B1/en

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Abstract

내용 없음.No content.

Description

황화칼슘계 형광체의 표면처리방법Surface treatment method of calcium sulfide-based phosphor

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 표면 미처리 CaS : Eu 형광체(A)와 표면 처리 CaS : Eu 형광체(B)의 시간에 따른 전기 전도도의 변화를 나타낸 그래프.1 is a graph showing the change in electrical conductivity over time of the surface-treated CaS: Eu phosphor (A) and the surface-treated CaS: Eu phosphor (B).

Claims (4)

황화 칼슘계 형광체의 표면처리방법에 있어서, 규산 칼륨 용액에 황화 칼슘계 형광체를 첨가하는 단계와, 상기 용액의 pH를 1.5 내지 2.5로 조정한 후 상기 형광체를 여과, 건조하는 단계와, 얻어진 상기 형광체를 산화성 분위기하에서 소성하여 분급하는 단계로 이루어지는 것을 특징으로 하는 황화칼슘계 형광체의 표면처리방법.In the surface treatment method of the calcium sulfide-based phosphor, adding a calcium sulfide-based phosphor to the potassium silicate solution, adjusting the pH of the solution to 1.5 to 2.5, filtering and drying the phosphor, and the obtained phosphor A method for treating a surface of a calcium sulfide-based phosphor, characterized in that the step of firing and classifying in an oxidizing atmosphere. 제1항에 있어서, 상기 규산 칼륨 수용액중 규산 칼륨의 양은 순수 100중량%를 기준하여 0.1 내지 10중량%인 것을 특징으로 하는 황화칼슘계 형광체의 표면처리방법.The method of claim 1, wherein the amount of potassium silicate in the aqueous potassium silicate solution is 0.1 to 10% by weight based on 100% by weight of pure water. 제1항에 있어서, 상기 소성단계중 소성온도는 500 내지 900℃이고, 소성시간은 1 내지 3시간인 것을 특징으로 하는 황화칼슘계 형광체의 표면처리방법.The method of claim 1, wherein the firing temperature is 500 to 900 ° C., and the firing time is 1 to 3 hours. 제1항 내지 제3항중 어느 한 항에 있어서, 상기 황화칼슘계 형광체가 CaS : Eu 형광체인 것을 특징으로 하는 황화칼슘계 형광체의 표면처리방법.The surface treatment method of the calcium sulfide-based phosphor according to any one of claims 1 to 3, wherein the calcium sulfide-based phosphor is a CaS: Eu phosphor. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900014005A 1990-09-05 1990-09-05 Surface-treating of sulfurated calcium fluorescent KR930010518B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900014005A KR930010518B1 (en) 1990-09-05 1990-09-05 Surface-treating of sulfurated calcium fluorescent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900014005A KR930010518B1 (en) 1990-09-05 1990-09-05 Surface-treating of sulfurated calcium fluorescent

Publications (2)

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KR920006473A true KR920006473A (en) 1992-04-27
KR930010518B1 KR930010518B1 (en) 1993-10-25

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KR1019900014005A KR930010518B1 (en) 1990-09-05 1990-09-05 Surface-treating of sulfurated calcium fluorescent

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KR930010518B1 (en) 1993-10-25

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