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Nitrogen oxide fluorescent material suitable for field emission display

A technology of nitrogen oxides and fluorescent materials, applied in the field of fluorescent materials, can solve the problem that the luminous performance of nitrogen oxides has not been publicly reported, and achieve the effects of good chemical stability, good electrical conductivity, high luminous efficiency and current saturation.

Inactive Publication Date: 2010-11-10
GUANGZHOU RES INST OF NON FERROUS METALS
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0009] The nitrogen oxide fluorescent materials excited by the above rare earth metal ions all have good luminous intensity under the light excitation of 380-460nm wavelength, and there is no public report on the luminescence performance of nitrogen oxides excited by electron beams.

Method used

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  • Nitrogen oxide fluorescent material suitable for field emission display
  • Nitrogen oxide fluorescent material suitable for field emission display
  • Nitrogen oxide fluorescent material suitable for field emission display

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Embodiment Construction

[0019] SrO, SrCO with purity ≥99% 3 , CaO, CaCO 3 , BaO, BaCO 3 , MgO, MgCO 3 , ZnO, ZnCO 3 and Si with purity ≥99.99% 3 N 4 , SiO 2 、Eu 2 o 3 、EuCO 3 , mix according to the ratio in Table 1, mix the materials in a closed container for 48 hours, put the uniformly mixed raw materials in an alumina crucible, put them in a high-temperature furnace, and sinter at 1250-1600 ° C for 12 hours in a reducing atmosphere. 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.

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Abstract

The invention relates to a nitrogen oxide fluorescent material suitable for a field emission display (FED). The material is characterized by being expressed by a general formula xMyNzL, wherein M is one or more of SrO, SrCO3, CaO, CaCO3, BaO, BaCO3, MgO, MgCO3, ZnO or ZnCO3; N is Si3N4 or the mixture of Si3N4 and SiO2; L is Eu2O3 or / and EuCO3; x is more than or equal to 0.8 and less than or equal to 0.98; y is more than or equal to 0.66 and less than or equal to 0.71; and z is more than or equal to 0.01 and less than or equal to 0.1. The invention provides the Eu<2+> excited alkaline earth silicon-based nitrogen oxide fluorescent material which emits blue-green or yellow-green fluorescent light after being excited by electron beams. The fluorescent material of the invention is suitable to be used as fluorescent powder for the FED.

Description

technical field [0001] The invention relates to a fluorescent material, in particular to a nitrogen oxide fluorescent material suitable for a field emission display. Background technique [0002] With the development of science and technology and the improvement of people's quality of life, the requirements for display devices continue to increase. Flat panel displays have entered people's lives due to their unique advantages. High-definition flat-panel TVs have been replacing traditional cathode ray tubes , CRT) TV. Large-screen flat panel display technologies mainly include liquid crystal display (Liquid Crystal Display, LCD), plasma display (Plasma Display Panel, PDP), LED display (Light Emission Diode Panel), organic light emitting display (Organic Light Emitting Display, OLED) and field Launch display (Field Emission Display, FED) and so on. At present, the flat-panel TV market is divided equally between LCD and plasma, but LCD TVs will have a "viewing angle" problem;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/79
Inventor 王灵利倪海勇张秋红
Owner GUANGZHOU RES INST OF NON FERROUS METALS