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Fluorescent material for electronic kinescope and preparation method thereof

A fluorescent material and a useful technology, applied in the directions of luminescent materials, chemical instruments and methods, can solve the problem of reducing the brightness of fluorescent materials, and achieve the effects of improving display effect, high fluorescence and convenient operation.

Inactive Publication Date: 2018-10-23
HENAN FUDIAN ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a fluorescent material for an electronic picture tube and a preparation method thereof. The method synthesizes a single crystal phase fluorescent material, and then performs grinding and heat treatment to solve the technical problem that the brightness of the fluorescent material decreases due to grinding

Method used

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Examples

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Effect test

Embodiment 1

[0017] A fluorescent material for an electronic picture tube, composed of Y 2 o 3 、Eu 2 o 3 , S, Na 2 CO 3 , NH 4 h 2 PO 4 and BaCl 2 2H 2 O is prepared, and its preparation method comprises the following steps:

[0018] (1) Preparation of single-phase fluorescent material: 150-200 parts of Y 2 o 3 , 15-20 Eu 2 o 3 , 150-200 parts of S, 250-350 parts of Na 2 CO 3 and 50-80 parts of NH 4 h 2 PO 4 Mix the mixture evenly, put the mixture into an alumina corundum clamp pot and heat it at 900-1100 degrees Celsius for 2-4 hours, wash the mixture with distilled water after cooling and dry it with a centrifuge to prepare Y 2 o 2 S: Eu mixed fluorescent material;

[0019] (2) single-phase fluorescent material grinding: the Y prepared in step (1) 2 o 2 S: Eu mixed fluorescent material and 400-500 parts of alumina corundum beads with a radius of 2-3 mm, 10-20 parts of BaCl 2 2H 2 0 mixed, and put into the alumina ceramic roller ball mill tank and carry out ball ...

Embodiment 2

[0022] A fluorescent material for an electronic picture tube, composed of Y 2 o 3 , Eu, Eu 2 o 3 and BaF 2 and BaCl 2 2H 2 O is prepared, and its preparation method comprises the following steps:

[0023] (1) Preparation of single-phase fluorescent material: according to parts by weight, 150 to 200 parts of Y 2 o 3 , 8 to 12 parts of Eu, 3 to 5 parts of Eu 2 o 3 , 25-35 parts of BaF 2 After mixing evenly, put the mixture into an alumina corundum clamp pot and heat it at 1300-1400 degrees Celsius for 2-4 hours. After cooling, wash the mixture with distilled water and dry it with a centrifuge to prepare Y 2 o 3 : Eu mixed fluorescent material;

[0024] (2) single-phase fluorescent material grinding: the Y prepared in step (1) 2 o 3 : Eu mixed fluorescent material and 400-500 parts of alumina corundum beads with a radius of 2-3 mm, 10-20 parts of BaCl 2 2H 2 0 mixed, and put into the alumina ceramic roller ball mill tank and carry out ball milling at a speed of 12...

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PUM

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Abstract

The invention provides a fluorescent material for an electronic kinescope and a preparation method thereof. The fluorescent material is prepared by adopting Y2O3, Eu2O3, S, Na2CO3, NH4H2PO4 and BaCl2.2H2O as raw materials, or adopting Y2O3, Eu, Eu2O3, BaF2 and BaCl2.2H2O as raw materials. The preparation method of the fluorescent material comprises the steps of (1) preparing a single-phase fluorescent material; (2) grinding the single-phase fluorescent material; (3) carrying out heat treatment on the single-phase fluorescent material and the like. Compared with a fluorescent material obtainedthrough a conventional means, the fluorescent material prepared by adopting the steps is of a microparticle state; when being applied to a color kinescope, the fluorescent material provided by the invention can be directly used without the need for being ground again, so that the problem that the brightness of the fluorescent material is reduced after conventional grinding, and a display effect ofthe color kinescope is effectively improved.

Description

technical field [0001] The invention relates to a preparation method of a fluorescent material, in particular to a fluorescent material for an electronic picture tube and a preparation method thereof. Background technique [0002] The color picture tube, also known as the color cathode ray tube, is widely used in the construction of the imaging system. It uses the cathode electron gun to emit electrons, and under the action of the anode high voltage, it shoots to the fluorescent screen to make the phosphor glow. In the imaging system, the color picture tube must have the characteristics of high resolution, high precision and high brightness. Therefore, new requirements have been put forward for the fluorescent materials on the fluorescent screen of the color picture tube. [0003] At present, in the prior art for processing the fluorescent material on the fluorescent screen of a color picture tube, the fluorescent material prepared by conventional means is generally screene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78C09K11/84
CPCC09K11/7787C09K11/7789
Inventor 张壮
Owner HENAN FUDIAN ELECTRONICS TECH CO LTD
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