Fluorescent powdery prescription with electronic beam excitation with low-operating voltage and preparation thereof

A low operating voltage, electron beam technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve problems such as poor luminous efficiency, reduced vacuum degree, and polluted field emission sources

Inactive Publication Date: 2005-10-12
TAIWAN THICK FILM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These phosphors are all phosphors used in cathode ray tubes. In order to make FED have a low operating voltage, these phosphors are not covered with aluminum layer like CRT when applied to FED, which will easily lead to deterioration and pollution of phosphors. Field emission sources, reduced vacuum, etc. will affect the lifespan, and the P22 series phosphors contain sulfur, which is less stable to the environment and climate than oxides, and it is easy to shorten the lifespan of the FED.
In addition, these CRT phosphors have poor luminous efficiency when impacted by low-energy electrons

Method used

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  • Fluorescent powdery prescription with electronic beam excitation with low-operating voltage and preparation thereof
  • Fluorescent powdery prescription with electronic beam excitation with low-operating voltage and preparation thereof
  • Fluorescent powdery prescription with electronic beam excitation with low-operating voltage and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 0.6274 grams of barium oxide (BaO), 0.800 grams of europium oxide (Eu 2 o 3 ), 0.1833 grams of magnesium oxide (MgO), and 2.3173 grams of aluminum oxide (Al 2 o 3 ) (i.e. according to (Ba 0.9 Eu 0.1 )MgAl 10 o 17 The proportion of the mixture) is fully mixed, ground and mixed thoroughly with a mortar, and the uniform mixture is placed in an alumina crucible, and then the alumina crucible is placed in a high-temperature furnace and pre-sintered at 1650 ° C for 12 hours in a reducing atmosphere environment. The sintering process The heating and cooling rates were both 5°C / min. After sintering, it is ground with a mortar to make it into a powder with uniform particles, and the finished product is obtained.

Embodiment 2

[0023] 1.8947 grams of barium oxide (BaO), 0.2416 grams of europium oxide (Eu 2 o 3 ), 0.5091 grams of magnesium oxide (MgO), 7.0000 grams of aluminum oxide (Al 2 o 3 ), and 0.1263 grams of manganese carbonate (MnCO 3 ) (i.e. according to (Ba 0.9 Eu 0.1 )(Mg 0.92 mn 0.08 ) Al 10 o 17 The proportion of the mixture) is fully mixed, ground and mixed thoroughly with a mortar, and the uniform mixture is placed in an alumina crucible, and then the alumina crucible is placed in a high-temperature furnace and pre-sintered at 1650 ° C for 12 hours in a reducing atmosphere environment. The sintering process The heating and cooling rates were both 5°C / min. After the sintering is completed, it is ground with a mortar to make it into a powder with uniform particles, and the finished product is obtained.

[0024] (Ba) prepared according to the embodiments of the present invention 1-x Eu x )MgAl 10 o 17 (x=0.1) and (Ba 1-x Eu x )(Mg 1-y mn y ) Al 10 o 17 (x=0.1, y=0.08) s...

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Abstract

The invention opened the fluorescent powder which adapts to be initiated by the low-voltage electron bundle. The BaMgAl10O17 is the main lattice, and adding the Eu2+ or Eu2+ and Mn2+ together. We can get the blue and blue-green fluorescence by the electron bundle initiating. The formula can be produced by many methods such as solid state reaction, settling method, gel method or emulsoid method. The process is easy to do and to product, the product has the industrial value.

Description

technical field [0001] The present invention relates to a fluorescent powder formula suitable for low operating voltage electron beam excitation and its preparation method, in particular to a fluorescent powder suitable for field emission displays, various photoelectric tubes excited by electrons and plasma, and light sources. Powder formulation and preparation method thereof. Background technique [0002] Displays are becoming more and more important in today's life. In addition to computers or networks, televisions, mobile phones, personal digital assistants (PDAs), and vehicle information systems all need to be controlled or transmitted through displays. For reasons of weight, volume, and health, products are adopting flat panel displays at an increasing rate. In 1999, the global flat-panel display market was approximately US$18.5 billion. This huge growth should be attributed to the good functions and low prices of liquid crystal displays (LCDs). Other flat panel displ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64
Inventor 刘如熹康佳正江慧宜
Owner TAIWAN THICK FILM IND
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