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

Rare earth three primary colours luminescent material transferring violet ray of violet ray diode to white ray

A technology of luminescent materials and diodes, which is applied in luminescent materials, electrical components, electric solid devices, etc., can solve the problems of high cost of white LEDs, difficulty in circuit control, and difficulty in obtaining phosphor powder, etc., and achieve high luminous efficiency, low cost, small size effect

Inactive Publication Date: 2006-02-08
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of high cost of white light LEDs in the above background technology, difficulty in circuit control, large volume, low luminous efficiency, and difficulty in obtaining phosphor powders that absorb purple light and convert white light, the purpose of the present invention is to find a better solution based on the aforementioned work. A rare-earth three-primary-color luminescent material that converts the purple light of the purple light diode into white light with low cost, simple process and high conversion efficiency

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
  • Rare earth three primary colours luminescent material transferring violet ray of violet ray diode to white ray

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1 is selected as: Y 2 o 3 (4N) 18.587%

[0017] Eu 2 o 3 (4N) 0.906%

[0018] S (high purity) 40.25%

[0019] NaCO 3 (AR) 40.257%

[0020] After mixing and grinding the above materials, put Al 2 o 3 Or in a quartz crucible, sinter at a high temperature of 1100°C or 1200°C or 1300°C or 1350°C in a sulfur-containing atmosphere for 1 hour or 1.5 hours or 2 hours or 2.5 hours or 3 hours (or the temperature and time within the above range All belong to the protection content of the present invention), take out the powder after cooling, select the powder, post-processing, both obtain the material that emits red light.

Embodiment 2

[0021] Embodiment 2 is selected as: Gd 2 o 3 (4N) 19.822%

[0022] Eu 2 o 3 (4N) 0.892%

[0023] S (high purity) 39.643%

[0024] NaCO 3 (AR) 39.643%

[0025] Sintering method step is the same as embodiment 1.

Embodiment 3

[0026] Embodiment 3 is selected as: La 2 o 3 (4N) 18.587%

[0027] Eu 2 o 3 (4N) 0.906%

[0028] S (high purity) 40.254%

[0029] NaCO 3 (AR) 40.253%

[0030] Sintering method step is the same as embodiment 1.

[0031] (2) The second part chemical formula (2) of the present invention takes M 3-x-y (PO 4 ) 2 ·(SrCl 2 ·6H 2 O) x :Eu y 2+ The components are prepared according to the structural formula and the blue light-emitting material, and the reagent materials are weighed according to the following measurements:

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

The invention relates to a rare earth three primary colours luminescent material transferring violet ray of violet ray diode to white ray, which is prepared from three compounds having a formula (1): R2-x-yO2S:EuxNy, formula (2): M3-x-y(PO4)2*(SrCl2*6H2O)x:Euy2+, formula (3): M1-x-yAl16O27*nB2O3:Eux2+.Mny2+ through the steps of weighing, mixing, grinding, high temperature sintering, cooling down, disintegrating, sieving, post-treating, obtaining red, blue and green rare earth luminescent materials, mixing them by the weight proportion of 30-50%, 5-20% and 20-65%, finally irradiating with purple light diode.

Description

Technical field: [0001] The invention belongs to the field of luminescence and display, and relates to a novel rare-earth luminescent material for converting violet light diodes into white light. Background technique: [0002] In recent years, there have been a lot of reports about purple light exciting three primary toners to make white light diodes: the applicant's patent CN00104438.9 "White Light Emitting Materials for Light-Emitting Diodes" and application 01140515.5 "Using Purple Light Diodes to Convert Light-Emitting Materials into White Light Emitting Materials" Method" earlier reported the work of using red, green and blue three-primary toners of different components to match purple light to emit white light. [0003] Great progress has been made in the research of GaN blue light (emission peak is 460nm---470nm) LED white light phosphor. But its luminous efficiency is low, GaN violet light emitting from 390nm---405nm is the focus of current research, but phosphors t...

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
IPC IPC(8): C09K11/81H01L51/30H01L33/00H01L33/50
Inventor 赵成久蒋大鹏侯凤勤刘学彦
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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