Preparation method of high-temperature resistant red fluorescent powder for CCFL (cold cathode fluorescent lamp)

A red phosphor, high temperature-resistant technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of unevenness, insignificant effect, incomplete particle lattice, etc., to achieve complete lattice and excellent surface coating effect. , the effect of uniform particles
CN102690653BActive Publication Date: 2013-10-30英特美光电(苏州)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
英特美光电(苏州)有限公司
Publication Date
2013-10-30

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Abstract

The invention relates to a preparation method of high-temperature resistant red fluorescent powder for CCFL (cold cathode fluorescent lamp), belonging to the technical field of preparation for luminescent materials. The preparation method comprises the following steps: dissolving urea in water to obtain urea solution; performing classification process to ytterbium europium oxide and controlling particle size of the ytterbium europium oxide to obtain first powders; adding the first powders into a stirring container filled with deionized water and stirring to obtain first slurries; cleaning the first slurries with the deionized water, sieving, and removing clear liquids after precipitating to obtain second slurries; adding the urea solution into the second slurries and stirring to obtain first mixtures; standing and precipitating the first mixtures, then pouring and removing the clear liquids to obtain second mixtures; dehydrating and drying the second mixtures, and sieving to obtain to-be-baked raw materials; putting the to-be-baked raw materials into the container and conveying into furnaces to bake, taking out of the furnaces and cooling to obtain the finished products. Lattices are completer; particles are more uniform; surface coating effects are excellent; heat stability is ideal; radiation resistance and aging resistance are excellent.
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Description

technical field

[0001] The invention belongs to the technical field of luminescent material preparation, and in particular relates to a preparation method of high-temperature-resistant red fluorescent powder for CCFL. Background technique

[0002] The aforementioned CCFL is the abbreviation of the English name, and the Chinese name is: cold cathode fluorescent lamp, also known as cold cathode fluorescent lamp for backlight. Because CCFL has the characteristics of small tube diameter, simple structure, high surface brightness, small temperature rise, easy processing into various geometric shapes and long service life, it is widely used in various types of backlights and scanners. In particular, with the improvement of its own technology and the rapid development of information technology, office equipment and daily electronic and electrical products, the application range of CCFL is continuously expanding, and the demand is constantly increasing.

[0003] The luminescent mec...

Claims

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