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Fluorescent glass, preparation method thereof and light emitting device

A fluorescent glass and glass technology, applied in the field of fluorescent materials, can solve the problems of heat resistance, poor anti-aging performance, carbonization and yellowing of encapsulation glue, affecting the luminous efficiency and service life of LED devices, etc., to achieve good aging resistance and use Long life and high luminous efficiency

Active Publication Date: 2019-03-26
深圳市齐尚光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common way to use phosphor powder is to mix phosphor powder with packaging glue (epoxy resin or silica gel), and then coat it on the LED chip to form a phosphor powder glue layer; since the phosphor powder glue layer is composed of epoxy resin or silica gel and phosphor powder It is formulated, and its heat resistance and anti-aging performance are poor. When the LED works for a long time under the current drive, the chip temperature rises, which will easily cause the packaging glue to carbonize and turn yellow, which will affect the luminous efficiency and service life of the LED device.

Method used

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  • Fluorescent glass, preparation method thereof and light emitting device
  • Fluorescent glass, preparation method thereof and light emitting device

Examples

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Embodiment 1

[0018] A kind of fluorescent glass, its raw material comprises glass substrate and fluorescent powder, and fluorescent powder is Lu 3 Al 5 o 12 : Ce 3+ and CaAlSiN 3 : a combination of Eu; the components of the glass matrix include: aluminum oxide, silicon oxide, boron oxide, flux, magnesium oxide, zinc oxide, calcium oxide and lead oxide, and the flux is specifically selected from sodium oxide and potassium oxide; and aluminum oxide, The molar ratio of silicon oxide, boron oxide, sodium oxide, potassium oxide, magnesium oxide, zinc oxide, calcium oxide and lead oxide is 0.2:2.2:0.5:0.3:0.05:0.03:0.2:0.3:0.2.

[0019] The specific preparation method includes the following steps: taking each component of the glass matrix according to the above molar ratio, taking the glass matrix, phosphor powder Y 3 Al 5 o 12 : Ce 3+ and CaAlSiN 3 : Eu, mix the raw materials for 48 hours to fully mix the raw materials; then put them into a clean crucible container, heat to about 1000 °...

Embodiment 2

[0027] The difference between this embodiment and embodiment 1 is that the fluorescent powder is Y 3 Al 5 o 12 : Ce 3+ and K 3 SiF 6 :Mn 4+ The composition of the glass matrix is: aluminum oxide, silicon oxide, boron oxide, sodium oxide, potassium oxide, magnesium oxide, zinc oxide, calcium oxide and lead oxide in a molar ratio of 0.1:2.5:0.6:0.2:0.02: 0.01:0.25:0.23:0.1; the specific preparation method is the same as in Example 1.

Embodiment 3

[0029] The difference between this embodiment and embodiment 1 is: the phosphor is (CaSrBa) 2 SiO 4 ;The composition of the glass matrix is: aluminum oxide, silicon oxide, boron oxide, sodium oxide, potassium oxide, magnesium oxide, zinc oxide, calcium oxide and lead oxide in a molar ratio of 0.3:2:0.2:0.1:0.07:0.05: 0.3:0.2:0.15; the specific preparation method is the same as in Example 1.

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Abstract

The invention discloses fluorescent glass, a preparation method thereof and a light emitting device. The fluorescent glass comprises the raw materials: a glass matrix and fluorescent powder; the fluorescent powder is dispersed into the glass matrix; and the glass matrix comprises the components: aluminum oxide, silicon oxide, boron oxide and a fluxing agent. In such a way, the fluorescent glass disclosed by the invention has the characteristics of high temperature resistance, ageing resistance, light emitting uniformity, high light emitting efficiency and long service life and can be applied to production of the light emitting device, and the light emitting device containing the fluorescent glass is high in light emitting efficiency and long in service life.

Description

technical field [0001] The invention relates to the technical field of fluorescent materials, in particular to a fluorescent glass, a preparation method thereof, and a light emitting device. Background technique [0002] At present, "green lighting" has become one of the important symbols of the degree of modernization of human society and an important measure related to the sustainable development of human society. The research and development of light-emitting diode (LED) lighting is the most concerned hotspot in recent years. White LED (W-LED) has become the most promising light source in the 21st century due to a series of advantages such as energy saving, environmental protection, long service life, and high luminous efficiency, and will replace incandescent lamps and fluorescent lamps as the third-generation lighting source. [0003] For white light LED packaging, the role of phosphor is to combine light and color to form white light. The common way to use phosphor p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C14/00C03C4/12C03C6/04F21K9/20
CPCC03C1/00C03C4/12C03C14/004C03C2214/04C03C2214/30F21K9/20
Inventor 朱中华
Owner 深圳市齐尚光科技有限公司