Unlock instant, AI-driven research and patent intelligence for your innovation.

Red phosphor, white light source, illuminating device and red phosphor forming method

A technology of red fluorescent and light-emitting devices, which is applied in the direction of electroluminescent light sources, chemical instruments and methods, light sources, etc., and can solve the problems of incompatibility and high cost of synthesizing nitrides

Inactive Publication Date: 2015-02-11
OSRAM GMBH
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of raw materials required for the phosphor and the cost of synthesizing nitrides are relatively high, and high temperature and high pressure environments are required to form them, and some of them cannot be matched with YAG phosphors in high temperature working environments.

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
  • Red phosphor, white light source, illuminating device and red phosphor forming method
  • Red phosphor, white light source, illuminating device and red phosphor forming method
  • Red phosphor, white light source, illuminating device and red phosphor forming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] According to the solution of the present invention, a new type of red phosphor used for LED light sources is provided, and the advantages of high efficiency, energy saving and long service life can be realized by means of the LED light source. In this invention, using CaAl 12-x-y Mg x o 19 as the main body, and at the same time using tetravalent manganese ions Mn 4+ The d-d energy level transition of the phosphor is realized to emit red light, with the help of CaAl 12-x-y Mg x o 19 As a host, Mn in phosphor crystals can be realized by magnesium ions 4+ charge balance and enhance the performance of the phosphor. Furthermore, the use of solid-state methods provides an inexpensive method of forming or synthesizing the red phosphor. On the basis of the red phosphor, a white light source with better performance and a lighting device with the white light source can be manufactured, thereby providing better lighting effects.

[0037] figure 1 shows the formation of re...

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

Red Phosphor, White Light Source, Light-emitting Device, and Method of Forming the Red Phosphor The present invention relates to a red phosphor, comprising an element A, magnesium (Mg), aluminum (Al), oxygen (O) and manganese (Mn) in a chemical formula (1) AAĮ 12-x-y Mg x O l9 :yMn 4+ wherein the element A in the chemical formula (1) is at least one selected from strontium (Sr), barium (Ba) and calcium (Ca), and 0<x<0.1 and 0<y<l. In addition, the present invention further relates to a white light source, a light- emitting device and a method of forming this red phosphor.

Description

technical field [0001] The present invention relates to a red phosphor and a method for forming it, and to a white light source and a light emitting device. Background technique [0002] In recent years, lighting technology has been greatly developed, especially lighting devices using light-emitting diode (LED) technology. Lighting devices designed with LEDs have various advantages, such as energy saving, long service life, and controllable light color, etc., especially compared with traditional incandescent lamps and discharge light sources. To achieve white light with LED technology, typically blue LED chips are used and combined with yellow and red phosphors or green and red phosphors to mix light and form white light. In order to realize the application of LED technology, obtaining the red phosphor used to form white light has become a key topic. [0003] Among them, a solution proposed according to the prior art, see Patent Document 1: US 7,846,350 B2, which discloses...

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): C09K11/64H01L33/50
CPCH05B33/14C09K11/643Y02B20/00
Inventor 刘中仕赵文慧荆西平
Owner OSRAM GMBH