Barcode structure fluorescent ceramics for white light LED devices and its preparation method and application

A technology of LED devices and fluorescent ceramics, applied in semiconductor devices, electrical components, circuits, etc., can solve problems such as color rendering index and color temperature difference, achieve low color temperature, good luminous effect, improve luminous efficiency and service life.

Active Publication Date: 2019-11-15
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the materials obtained by this method have problems such as color rendering index and color temperature difference.

Method used

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  • Barcode structure fluorescent ceramics for white light LED devices and its preparation method and application
  • Barcode structure fluorescent ceramics for white light LED devices and its preparation method and application
  • Barcode structure fluorescent ceramics for white light LED devices and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In this embodiment, the fluorescent ceramic structure such as figure 1 As shown, there are two kinds of ceramic units: GGAG:Ce 3+ and GGAG:Eu 3+ composition, figure 1 The middle white filled part represents the ceramic unit GGAG:Ce 3+ , the black filled part represents the ceramic unit GGAG:Eu 3+ ; These two ceramic unit structures are exactly the same, in the form of a cube, the thickness, length and width are equal, the thickness is 0.15-45mm, the length is 0.05-50mm, and the width is 0.01-30mm; assuming that the X axis and the Y axis are perpendicular to each other, the two is the coordinate axis constituting the horizontal plane, then the two ceramic units are arranged alternately and closely along the X-axis direction, forming an overall structure similar to a barcode.

[0037] The fluorescent ceramics are obtained by dry pressing, and the specific preparation method is as follows:

[0038] (1) According to figure 1 Design the mold according to the barcode st...

Embodiment 2

[0044] In this embodiment, the fluorescent ceramic structure such as Figure 6 As shown, there are two kinds of ceramic units: GGAG:Ce 3+ , GGAG:Bi 3+ and GGAG:Eu 3+ composition, Figure 6 The filled part of the oblique line indicates the ceramic unit GGAG:Ce 3+ , the white filled part represents the ceramic unit GGAG:Bi 3+ , The black filled part indicates the ceramic unit GGAG:Eu 3+ The structure of these three ceramic units is exactly the same, in the form of a cube, with the same thickness, length and width, the thickness is 0.15-45mm, the length is 0.05-50mm, and the width is 0.01-30mm; assuming that the X axis and the Y axis are perpendicular to each other, the two is the coordinate axis constituting the horizontal plane, then the three ceramic units are alternately arranged closely along the X-axis and the Y-axis direction, forming an overall structure similar to a barcode.

[0045] The fluorescent ceramic with barcode structure is obtained by dry pressing, and th...

Embodiment 3

[0051] In this embodiment, the fluorescent ceramic structure such as figure 1 As shown, there are two kinds of ceramic units: GGAG:Ce 3+ and GGAG:Pr 3+ composition, figure 1 The middle white filled part represents the ceramic unit GGAG:Ce 3+ , the black filled part represents the ceramic unit GGAG:Pr 3+ ; These two ceramic unit structures are exactly the same, in the form of a cube, the thickness, length and width are equal, the thickness is 0.15-45mm, the length is 0.05-50mm, and the width is 0.01-30mm; assuming that the X axis and the Y axis are perpendicular to each other, the two is the coordinate axis constituting the horizontal plane, then the two ceramic units are arranged alternately and closely along the X-axis direction, forming an overall structure similar to a barcode.

[0052] The fluorescent ceramic with barcode structure is obtained by tape casting method, and the specific preparation method is as follows:

[0053] (1) Dosing according to the components of ...

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Abstract

The invention discloses barcode-structure fluorescent ceramic for white LED devices. The barcode-structure fluorescent ceramic is composed of two or more ceramic units. The ceramic units emit light of different colors after being excited by the same LED lamp, and the light is synthesized into full-spectrum white light and then emitted out. The ceramic units are arranged alternately and closely in the horizontal plane to form an integrated structure similar to a barcode. After being excited by an LED chip arranged above or below the ceramic, the fluorescent ceramic of a barcode structure emits white light. The fluorescent ceramic has the characteristics of flexible spectrum adjustment, high light conversion efficiency and color rendering index, long service life, and good thermal stability. For a white LED device using the fluorescent ceramic, efficient utilization of energy is realized, and a small and compact lighting system is ensured. Therefore, the barcode-structure fluorescent ceramic can make up for the deficiency of the prior art and meet the requirement of market commercialization.

Description

technical field [0001] The invention belongs to the technical field of LED lighting, and relates to a structure design and a preparation method of a fluorescent ceramic with a barcode structure used for a white light LED device. Background technique [0002] With its high brightness, high color rendering index, energy saving and environmental protection, fast response, long service life, small size, high reliability and many other advantages, white LED has become the "fourth generation of green" after incandescent lamps, fluorescent lamps and high-pressure gas discharge lamps. Lighting source", and gradually entered the field of general lighting from the application field of special light source. [0003] At present, white LED products on the market mainly use fluorescent materials based on powdered phosphors. Specifically, the phosphors doped with rare earth luminescent materials are evenly distributed in organic materials such as epoxy resin and silica gel, and then encaps...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/00H01L33/50H01L33/64
CPCH01L33/005H01L33/504H01L33/641H01L2933/0041H01L2933/0075
Inventor 张继云罗朝华蒋俊江浩川
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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