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Preparation method of fluorescent material for PDP

A technology of fluorescent materials and phosphors, applied in the field of fluorescent materials, can solve problems such as the decline of luminous characteristics, achieve the effects of improving service life, reducing the impact of hydrothermal environment, and avoiding the decline of display quality

Pending Publication Date: 2021-10-15
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of fluorescent material for PDP, which solves the defect that the existing fluorescent material for PDP is easily affected by water and thermal environment, which leads to the decline of luminous characteristics.

Method used

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  • Preparation method of fluorescent material for PDP
  • Preparation method of fluorescent material for PDP
  • Preparation method of fluorescent material for PDP

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Method for preparing one kind of PDP fluorescent material, comprising the step of:

[0023] Step a: selecting the molecular formula Y 0.88 (La, Sc, Bi) 0.02 BO 3 : Eu 3+ Fluorescent material, a fluorescent material is made into a spare phosphor particles, phosphor particles of diameter of 4 m; preparation method of the prior art fluorescent material is, for example, mixed oxides and boric acid after the relevant elements to at 500 ℃ for 2 hours, cooled and milled for 3 hours was placed 1000 ℃ again to obtain the (same below).

[0024] Step two: Preparation of nano-SiO 2 Microsphere suspension standby, in particular: ethanol, ammonia water and deionized water were mixed was added n-methyl silicate, the rotational speed at 400rpm, the reaction was stirred 12h, was separated, washed with nanoscaled SiO 2 Microspheroidal particles, then nano-SiO 2 Microsphere particles are dispersed in water to obtain 3 times the amount of nano-SiO 2 Microsphere suspension;

[0025] Step 3: the...

Embodiment 2

[0027] Method for preparing one kind of PDP fluorescent material, comprising the step of:

[0028] Step a: selecting the molecular formula Y 0.85 (La, Sc, Bi) 0.05 BO 3 : Eu 3+ Fluorescent material, wherein the phosphor particles made of a fluorescent material standby, the particle size of the phosphor particles was 7 m;

[0029] Step two: Preparation of nano-SiO 2 Microsphere suspension standby, in particular: ethanol, ammonia water and deionized water were mixed was added tetraethylorthosilicate, the rotational speed at 500rpm, the reaction was stirred 10H, separated, washed with nanoscaled SiO 2 Microspheroidal particles, then nano-SiO 2 Microsphere particles are dispersed in water to obtain an amount of 6 times the nano-SiO 2 Microsphere suspension;

[0030] Step 3: the phosphor particles and a step of two step nano-SiO 2 Microsphere suspension of 2: 1 mass ratio of uniformly mixed and stirred, sonicated for 2h at intervals during the reaction the dispersion was stirred 20min,...

Embodiment 3

[0032] Method for preparing one kind of PDP fluorescent material, comprising the step of:

[0033] Step a: selecting the molecular formula Y 0.82 (La, Sc, Bi) 0.08 BO 3 : Eu 3+ Fluorescent material, wherein the phosphor particles made of a fluorescent material standby, the particle size of the phosphor particles is 10 m;

[0034] Step two: Preparation of nano-SiO 2 Microsphere suspension standby, in particular: ethanol, ammonia water and deionized water were mixed was added n-propyl silicate, the rotational speed at 600rpm, the reaction was stirred 8h, separated, washed with nanoscaled SiO 2 Microspheroidal particles, then nano-SiO 2 Microsphere particles are dispersed in water to obtain an amount of 8 times the nano-SiO 2 Microsphere suspension;

[0035] Step 3: the phosphor particles and a step of two step nano-SiO 2 Microsphere suspension of 1: 1.5 by mass ratio were mixed and stirred uniformly, 3h carried out in a stirred reactor at intervals during the ultrasonic dispersion 2...

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Abstract

The invention discloses a preparation method of a fluorescent material for a PDP, the preparation method comprises the following steps: selecting a fluorescent material with a molecular general formula of Y0.9-x (La, Sc, Bi) xBO3: Eu < 3 + >, wherein in the formula, x is more than or equal to 0 and less than or equal to 0.1, and preparing the fluorescent material into phosphor particles for later use; preparing a nano SiO2 microsphere suspension for later use; and mixing and uniformly stirring the phosphor particles and the nano SiO2 microsphere suspension according to a mass ratio of 4: 1-1: 1.5, carrying out low-temperature evaporation drying at 40-60 DEG C to remove moisture, and carrying out heat treatment at 500-550 DEG C in a protective atmosphere to obtain the phosphor material coated with the protection layer. The color purity and the brightness of the prepared fluorescent material both reach a relatively high level, and the use requirements of PDP (Plasma Display Panel) can be met; moreover, the phosphor material adopts nano SiO2 microsphere particles as the coating protection layer, the protection layer is uniform and compact, the influence of a hydrothermal environment on the phosphor material is remarkably reduced on the premise of ensuring good luminescence and light transmission performance, the brightness maintenance of the phosphor material is facilitated, and the display quality of the plasma flat panel display screen is prevented from being reduced.

Description

Technical field [0001] Technical Field The present invention relates to a fluorescent material, particularly relates to a method for producing a fluorescent material for PDP. Background technique [0002] The fluorescent material is made of a metal (zinc, chromium) sulfide or a rare earth oxide with the active agent with trace by calcination. Colorless or white, in the ultraviolet light (200 ~ 400nm) irradiation, according to different pigment and a metal activator species, the content, and exhibits various colors of visible light (400 ~ 800nm). With the progress of science and technology, people study more and more of the fluorescent material, the scope of application of fluorescent material more widely. In addition to a dye as the fluorescent substance, but also organic pigments, optical brighteners, photo-oxidant, paint, chemical and biochemical analysis, art solar trap, security marking, and laser tracer drugs have been more widely used. [0003] PDP (Plasma Display Panel, Pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78
CPCC09K11/7797
Inventor 解文杰黄石陆孝龙李浩
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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