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Preparation method for nitride phosphor/glass composite luminescent sheet layer

A technology of nitride phosphors and light-emitting sheets, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of damage to the properties of phosphors, aging of resin and silica gel, affecting image quality, etc., and achieves low equipment requirements. , good thermal stability, good luminous performance

Inactive Publication Date: 2014-05-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the use time increases, the resin and silica gel will age and crack, and the properties of the phosphor will also be damaged, which will seriously affect the image quality

Method used

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  • Preparation method for nitride phosphor/glass composite luminescent sheet layer
  • Preparation method for nitride phosphor/glass composite luminescent sheet layer
  • Preparation method for nitride phosphor/glass composite luminescent sheet layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Preparation of bismuth salt system glass

[0028] The composition of the bismuthate system glass includes Bi 2 o 3 , B 2 o 3 , ZnO and Al 2 o 3 , the mass percentage of each component is Bi 2 o 3 :60%, B 2 o 3 :30%, ZnO:6%, Al 2 o 3 : 4%; weigh Bi according to the formula 2 o 3 、H 3 BO 3 , ZnO and Al 2 o 3 Analysis of pure raw materials, where B 2 o 3 by H 3 BO 3 Introduction; fully grind the weighed raw materials in a mortar, mix them evenly, pour them into an alumina crucible, melt them at 1200°C for 0.5h, quench the molten glass directly in water, and dry, grind and sieve the granular glass to obtain Required low melting point glass powder.

[0029] (2) Preparation of nitride phosphor / glass composite luminescent sheet

[0030] CaAlSiN 3 :Eu 2+ Mix the phosphor powder and the glass powder of the bismuth salt system evenly at a mass ratio of 1:4, spread the mixture into a self-made mold, and flatten it with a tablet press with a pressure of ...

Embodiment 2

[0036] (1) Preparation of bismuth salt system glass

[0037] The composition of the bismuthate system glass includes Bi 2 o 3 , B 2 o 3 , ZnO and Al 2 o 3 , the mass percentage of each component is Bi 2 o 3 :65%, B 2 o 3 :25%, ZnO:7%, Al 2 o 3 : 3%; weigh Bi according to the formula 2 o 3 、H 3 BO 3 , ZnO and Al 2 o 3 Analysis of pure raw materials, where B 2 o 3 by H 3 BO 3 Introduction; fully grind the weighed raw materials in a mortar, mix them evenly, pour them into an alumina crucible, melt them at 1300°C for 1.0h, quench the molten glass directly in water, and dry, grind and sieve the granular glass to obtain Required low melting point glass powder.

[0038] (2) Preparation of nitride phosphor / glass composite luminescent sheet

[0039] CaAlSiN 3 :Eu 2+The phosphor powder and the glass powder of the bismuth salt system were mixed evenly at a mass ratio of 1:1, and the mixture was spread into a self-made mold, and flattened with a tablet press, using...

Embodiment 3

[0043] (1) Preparation of bismuth salt system glass

[0044] The composition of the bismuthate system glass includes Bi 2 o 3 , B 2 o 3 , ZnO and Al 2 o 3 , the mass percentage of each component is Bi 2 o 3 :70%, B 2 o 3 :20%, ZnO:8%, Al 2 o 3 : 2%; weigh Bi according to the formula 2 o 3 、H 3 BO 3 , ZnO and Al 2 o 3 Analysis of pure raw materials, where B 2 o 3 by H 3 BO 3 Introduction; fully grind the weighed raw materials in a mortar, mix them evenly, pour them into an alumina crucible, melt them at 1400°C for 1.5 hours, quench the molten glass liquid directly, and dry, grind and sieve the granular glass to obtain Required low melting point glass powder.

[0045] (2) Preparation of nitride phosphor / glass composite luminescent sheet

[0046] CaAlSiN 3 :Eu 2+ The phosphor powder and the glass powder of the bismuth salt system were mixed evenly at a mass ratio of 4:1, and the mixture was spread into a self-made mold, and flattened with a tablet press, u...

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Abstract

The invention relates to a preparation method for a nitride phosphor / glass composite luminescent sheet layer. The preparation method comprises the steps of mixing glass components uniformly, melting to obtain a molten glass liquid, wherein the glass components comprise, by mass, 60-70% % of Bi2O3, 20-30% of B2O3, 6-8% of ZnO and 2-4% of Al2O3; water quenching, drying, grinding and screening to obtain glass powder; mixing phosphor powder and the glass powder uniformly to obtain mixed powder; then spreading the mixed powder on a mold; tabletting; carrying out heat treatment for 0.5-1.5 h at a temperature of 500-600 DEG C; and cooling to obtain the nitride phosphor / glass composite luminescent sheet layer. The preparation method is simple, and has low requirements for equipment. The phosphor / glass composite luminescent sheet layer provided by the invention has the advantages of high luminescent intensity, good heat stability and good mechanical strength. Besides, the phosphor / glass composite luminescent sheet layer is simple in preparation, and has good application prospects in laser phosphor display (LPD) display.

Description

technical field [0001] The invention belongs to the field of preparation of luminescent materials, in particular to a method for preparing a nitride fluorescent powder / glass composite luminescent sheet. Background technique [0002] In recent years, new display technology has developed rapidly. Laser display has the advantages of high color resolution, high brightness / large screen display, low power consumption, and long life. However, using red, green, and blue lasers directly as a display light source has high cost and low efficiency, which is far from reaching the acceptable range of the market. Shenzhen Guangfeng Optoelectronics Co., Ltd. has successfully developed LPD (Laser Excited Phosphor Powder) technology, which converts blue laser light into three-color light by rotating the fluorescent pink wheel. This technology cleverly solves the high cost of the three-color laser light source, and while retaining the advantages of low power consumption, good display effect, ...

Claims

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Application Information

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IPC IPC(8): C03C4/12C03C3/145C03B19/01
Inventor 王宏志刘光李耀刚张青红
Owner DONGHUA UNIV
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