Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fluorescent glass-ceramic for high-power lighting and display, preparation method and application thereof

A fluorescent glass and high-power technology, which is applied in the field of high-power lighting and fluorescent glass ceramics for display and its preparation, can solve the problems of limiting the application of all-inorganic light conversion materials, not suitable for large-scale production, and complicated preparation processes, and achieve mechanical And the effects of stable physical and chemical properties, no permeation loss, and simple preparation process

Active Publication Date: 2019-01-11
SUN YAT SEN UNIV
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although single crystal and transparent ceramics have high thermal conductivity and excellent heat aging resistance, their preparation process is complicated, expensive, and poor in repeatability, so they are not suitable for large-scale production.
These factors limit the application of all-inorganic photoconversion materials in high-power lighting and display

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fluorescent glass-ceramic for high-power lighting and display, preparation method and application thereof
  • Fluorescent glass-ceramic for high-power lighting and display, preparation method and application thereof
  • Fluorescent glass-ceramic for high-power lighting and display, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Glass matrix 55SiO 2 -10A 2 O-20ZnO-15MO Synthesis Technology and YAG:Ce 3+ - Preparation of PiG fluorescent glass ceramics

[0035] Table 1: The raw material composition of embodiment 1 glass matrix

[0036] raw material

[0037] Accurately weigh and analyze pure silicon dioxide (SiO2) according to Table 1 2 ), sodium carbonate (Na 2 CO 3 ), zinc oxide (ZnO), calcium carbonate (CaCO 3 ). The accurately weighed raw materials are ground by a ball mill for 6-8 hours, then poured into an alumina crucible, and then melted in a box furnace at 1350 °C for 1 hour, pour the molten glass liquid into distilled water to cool, dry and grind into pink. According to phosphor YAG:Ce 3+ (commercially available, its composition is Y 3 al 5 o 12 : Ce 3+ ) and glass powder with a mass fraction of 5:95, accurately weighed, ground in an agate mortar for 0.5 h, selected rubber molds of different sizes, and pressed the mixed powder into tablets by a cold isostatic table...

Embodiment 2

[0038] Example 2: Glass matrix 55SiO 2 -8A 2 O-20ZnO-22MO Synthesis Technology and YAG:Ce3+ - Preparation of PiG fluorescent glass ceramics

[0039] The raw material composition of table 2 embodiment 2 glass matrix

[0040] raw material

[0041] Accurately weigh and analyze pure silicon dioxide (SiO2) according to Table 2 2 ), sodium carbonate (Na 2 CO 3 ), zinc oxide (ZnO), calcium oxide (CaO). The accurately weighed raw materials are ground by a ball mill for 10-12 hours, poured into an alumina crucible, and then melted in a box furnace at 1400°C for 1.5 hours, poured molten glass into distilled water to cool, dried and ground into pink. According to the mass fraction of fluorescent powder and glass powder is 7:93, after accurate weighing, grind in an agate mortar for 0.5 h, choose rubber molds of different sizes, and compress the mixed powder through a cold isostatic tablet press (The pressing condition is 10 MPa for 30 minutes), and keep it in a box furnac...

Embodiment 3

[0042] Example 3: Glass matrix 55SiO 2 -10A 2 O-23ZnO-12MO Synthesis Technology and YAG:Ce 3+ - Preparation of PiG fluorescent glass ceramics

[0043] Table 3 The raw material composition of embodiment 3 glass matrix

[0044] raw material

[0045] Accurately weigh and analyze pure silicon dioxide (SiO2) according to Table 3 2 ), lithium carbonate (Li 2 CO 3 ), zinc oxide (ZnO), calcium carbonate (CaCO 3 ). The accurately weighed raw materials are ground by a ball mill for 6-8 hours, poured into an alumina crucible, and then melted in a box furnace at 1350°C for 1.5 hours, poured molten glass into distilled water to cool, dried and ground into pink. According to the mass fraction of phosphor powder and glass powder is 6:94, after accurate weighing, grind in an agate mortar for 0.5 h, choose rubber molds of different sizes, and compress the mixed powder through a cold isostatic tablet press (The pressing condition is 30 MPa for 10 minutes), and keep it in a bo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A high-power fluorescent glass ceramic for illumination and display. The fluorescent glass ceramic has a composition of (1-x)A:xB, wherein x is the percentage of B by weight, and x ranges from 1 to 40%; A is glass matrix with a composition of aSiO2-bA2O-cZnO-dMO, wherein a, b, c, and d are all molar percentages, a + b + c + d = 100, A in A2O represents an alkali metal, M in MO represents alkaline-earth metal; and B is a YAG:Ce3+ phosphor. In the fluorescent glass ceramic, the glass matrix has a low remelting temperature and easily available raw materials with low costs, and is green and pollution-free. Combined with the YAG:Ce3+ phosphor, the glass matrix features high light conversion efficiency and excellent heat aging resistance.

Description

technical field [0001] The invention belongs to the technical field of high-power lighting and display, and more specifically relates to a fluorescent glass-ceramic for high-power lighting and display and its preparation method and application. Background technique [0002] With the improvement of the light efficiency of blue LED and blue LD as a new excitation light source, high-power lighting and display have important application prospects in indoor and outdoor lighting, cinema and home projectors, car headlights and other fields. However, the packaging material used in traditional high-power lighting and display is silica gel. Due to its low thermal conductivity and easy aging characteristics, long-term use will reduce the light efficiency of lighting and display devices, and the light color will drift. To solve this technical problem, it is necessary to develop new all-inorganic light conversion materials with high thermal conductivity. At present, there are three main...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/00C03C4/12
CPCC03C4/12C03C10/0009
Inventor 王静张学杰余金波
Owner SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com