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Luminescent material, LED, lamp and luminescent device

A technology of luminescent materials and luminescent layers, applied in luminescent materials, parts of gas discharge lamps, electrical components, etc., can solve problems such as lack of diversity, and achieve the effect of high brightness color rendering and excellent color rendering

Inactive Publication Date: 2008-03-19
黎涤萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the process of afterglow luminescence, the luminescent color is determined by the mixture of the light emitted by the first luminescent material and the light emitted by the second luminescent material, so the afterglow color is basically unchanged and lacks diversity.

Method used

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  • Luminescent material, LED, lamp and luminescent device
  • Luminescent material, LED, lamp and luminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0086] The light-emitting materials in Examples 1-3 are suitable for use in combination with ultraviolet-violet LED chips with a peak wavelength of 360-420 nm. The luminescent material in embodiment 4-8 is suitable for use in combination with fluorescent lamps, and the luminescent material for illumination used in embodiment 4-6 is a three-primary color luminescent material, wherein blue and green luminescent materials can also adopt other materials, such as (Sr , Ca, Ba, Mg) 5 (PO 4 ) 3 Cl:Eu, MgAl 11 o 19 : Ce, Tb, etc. The luminescent material for illumination used in Examples 7 and 8 is a calcium halophosphate luminescent material.

[0087] Hereinafter, the LED, the lamp, and the light-emitting device of the present invention will be specifically described with reference to the drawings, but the present invention is not limited to these embodiments.

[0088] In the following examples, A1:A2:B represents the light-storing light-emitting material in the first li...

Embodiment 9

[0090] Fig. 1 is a cross-sectional view showing an LED 1A according to Embodiment 9 of the present invention. 4 is an ultraviolet LED chip with a peak wavelength of 390nm, and the luminescent layer 8L adopts the luminescent material of Example 1, according to A1:A2:B=4:1:4, after fully mixing the first luminescent material and the second luminescent material, coating Apply it. When LED1A is working, the ultraviolet LED chip 4 emits ultraviolet light, which excites the red, green and blue light-emitting materials Y 2 o 2 S:Eu, BaMg 2 Al 16 o 27 :Eu, Mn, (Sr, Ca) 10 (PO 4 ) 6 Cl 2 : Eu and blue, yellow light-storing luminescent material Sr 2 MgSi 2 o 7 : Eu, Dy, Ca 2 MgSi 2 o 7 :Eu, Dy, emits white light mixed with red, yellow, green, and blue light. The white light has excellent color rendering and is emitted outward. After LED1A stops working, Sr 2 MgSi 2 o 7 :Eu, Dy continue to emit blue light and excite Ca 2 MgSi 2 o 7 : Eu, Dy, emit yellow light, as the...

Embodiment 10

[0092] Fig. 2 is a cross-sectional view showing LED 1B according to Example 10 of the present invention. The difference from LED1A of Example 9 is that the luminescent layer of LED1B is composed of a first luminescent layer 8M and a second luminescent layer 8N, and the first luminescent material and the second luminescent material of Example 3 are respectively used. In the first luminescent material, A1 : A2=1:1, the rest are the same as in Example 9. When LED1B is working, the ultraviolet LED chip 4 emits ultraviolet light, which excites the red, green and blue light-emitting materials Y in the first light-emitting layer 8M 2 o 2 S:Eu, BaMg 2 Al 16 o 27 :Eu, Mn, (Sr, Ca) 10 (PO 4 ) 6 Cl 2 :Eu and blue-violet light-storing luminescent material 4SrO·7Al 1.8 B 0.2 o 3 :Eu, Dy, emitting magenta-white light mixed with red, green, blue and blue-violet light. When the partial magenta-white light passes through the second light-emitting layer 8N, the blue-violet light exci...

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Abstract

The invention provides a luminescent material, a LED, a lamp and a light producing device with wide color range, long afterglow time, variable afterglow color, high brightness and good color rendering. The luminescent material includes a first luminescent material absorbing and converting at least one part of light of the excitation source to emit light with more longer wave and a second luminescent material absorbing and converting at least one part of light of the first luminescent material to emit light with much more longer wave, wherein the first luminescent materials and the second luminescent materials respectively at least includes light-storing luminescent material. Because of adopting the luminescent material, the LED, the lamp and the light producing device all can emit light with wide color range, much long afterglow, variable afterglow color, high brightness and good color rendering.

Description

technical field [0001] The present invention relates to luminescent materials, LEDs, lamps and light-emitting devices. Specifically, it relates to luminescent materials, LEDs, lamps and luminescent devices with very wide chromaticity range, extremely long afterglow time, variable afterglow color, high brightness and excellent color rendering. light emitting device. Background technique [0002] In recent years, the application of long afterglow fluorescent lamps and long afterglow LEDs has been expanding. Long afterglow fluorescent lamps and long afterglow LEDs have long afterglow due to the use of light-storing light-emitting materials. [0003] In Japanese Patent Laid-Open No. 2005-330459, a technology of light-storing light-emitting materials, lamps, LEDs, and light-emitting devices is disclosed. It is characterized in that: the light-emitting materials used in the lamps, LEDs, and light-emitting devices of the invention are composed of 2 Composed of similar luminescent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/77H01L33/00H01J61/44H01L33/50
Inventor 邱行中尹绍刚邱励楠尹远成黎涤萍
Owner 黎涤萍
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