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Interlayer fluorescent glass and preparation method and application thereof

A fluorescent glass and interlayer technology, applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of affecting service life, easy aging, and easy corrosion, etc., and achieve the effects of reducing economic costs, low equipment requirements, and avoiding direct contact

Active Publication Date: 2017-06-09
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the glass substrate can block the thermal impact of the chip on the phosphor, the phosphor layer is still exposed to the air, which is still vulnerable to corrosion and aging, which affects the service life

Method used

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  • Interlayer fluorescent glass and preparation method and application thereof
  • Interlayer fluorescent glass and preparation method and application thereof
  • Interlayer fluorescent glass and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 As shown in the figure, the Ce:YAG glass slurry 1 is printed on a φ50 glass plate 1 with a thickness of 0.4mm through a 100-mesh screen. The same operation process is used to obtain the same glass plate 2, and then the produced The obtained two glass plate samples were respectively placed in a precision annealing furnace, raised from room temperature to 200°C in 9 hours, kept at 200°C for 2 hours, then cooled to 50°C, the precision annealing furnace was closed, and the temperature was automatically lowered to The glass slurry obtained at room temperature was dried on a glass plate. Then put the two dried glass plate samples together in a sintering furnace to raise the temperature from room temperature to 550 ° C for 1 h, and keep it at 550 ° C for 10 min, and then cool down to room temperature with the furnace to obtain a Ce: YAG fluorescent layer with a thickness of Laminated glass with a thickness of 20 μm and a transmittance of more than 80% has a s...

Embodiment 2

[0059] In this embodiment, the Ce:YAG fluorescent glass slurry 1 in the embodiment 1 is replaced with the Ce:YAG fluorescent glass slurry 2, and the rest are the same as in the embodiment 1, and will not be repeated.

[0060] The Ce: YAG fluorescent glass slurry 2 is composed of: PbO: 40 parts, B 2 o 3 : 10 parts, SiO 2 : 6 parts, ZnO: 4 parts and Ce: YAG phosphor powder: 10 parts were accurately weighed, then put into an agate mortar, mixed and ground evenly, and the ground glass frit and deionized water were mixed at a mass ratio of 2.5:1. Mix and stir well to make a slurry. Then the prepared laminated glass was matched with the 3328 blue LED chip and tested, and the 3328 blue LED chip was matched and tested, and the light effect was 58.45lm / W, the color temperature was 7425K, and the color rendering index was 58.45lm / W. 76.8.

Embodiment 3

[0062] In this example, the temperature in Example 1 was raised from room temperature to 200°C in 9 hours, and kept at 200°C for 2 hours, then cooled to 50°C, the precision annealing furnace was closed, and the temperature was automatically lowered to room temperature to obtain glass The slurry was dried on a glass plate with a thickness of 1 mm. Then put the two dried glass plate samples together in a sintering furnace to raise the temperature from room temperature to 550°C for 1 hour, and keep the temperature at 550°C for 10 minutes, then change it to take 8 hours to rise from room temperature to 250°C, and Insulate at 250°C for 1 hour, then cool to 50°C, close the precision annealing furnace, automatically cool down to room temperature to obtain glass slurry and dry it on a glass plate. Then put the two dried glass plate samples together in a sintering furnace to raise the temperature from room temperature to 600 ° C for 1 h, and keep the temperature at 600 ° C for 5 min, a...

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Abstract

The invention discloses an interlayer fluorescent glass and a preparation method and applications thereof; the interlayer fluorescent glass comprises a first glass substrate, a second glass substrate and a Ce:YAG fluorescent glass layer clamped between the first and second glass substrates; the first glass substrate, the Ce:YAG fluorescent glass layer and the second glass substrate are directly and firmly combined so as to form a whole body; the visible light transmittance of the first and second glass substrates is bigger than 90%, and the softening point temperature is bigger than 800 DEG C; the melting point of the Ce:YAG fluorescent glass layer is below 700 DEG C; the refractive indexes of the first and second glass substrate are equal, and are respectively close to or equal to that of the Ce:YAG fluorescent glass layer; the thicknesses of the first and second glass substrates are respectively 0.4-3mm; the thickness of the Ce:YAG fluorescent glass layer is 15-200 micron. The interlayer fluorescent glass is used for white light LED device preparations, and the sandwich structure and well protect the fluorescent glass layer, thus prolonging the service life.

Description

[0001] (1) Technical field [0002] The invention relates to a laminated fluorescent glass, its preparation method and its application in the preparation of white light LED. [0003] (2) Background technology [0004] Light Emitting Diode (Light Emitting Diode) light source, as a new type of green lighting source, has been widely used around the world for its characteristics of no pollution, long life, low loss, pure light color, and shock resistance. Since the 1960s, the white LED emerging industry has become the new darling of the lighting industry, rising rapidly and developing at a high speed. [0005] At present, the white light LED fluorescent material mainly uses amorphous phosphor as the main body, and the commercialized white light LED product is based on the combination of chip and phosphor to form white light as the mainstream of development. At present, the manufacture of high-efficiency, high color rendering index, low color temperature, and high-power white LEDs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50
CPCH01L33/505H01L2933/0041
Inventor 向卫东杨程梁晓娟
Owner WENZHOU UNIVERSITY
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