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

Method for manufacturing nano phosphors, light emitting diode and method for manufacturing light emitting diode

A technology of light-emitting diodes and phosphors, applied in the directions of nano-optics, light-emitting materials, nano-technology, etc., can solve the problems of deteriorating particle size reproducibility characteristics of phosphors, etc.

Active Publication Date: 2014-01-22
SAMSUNG DISPLAY CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem of deteriorating the reproducibility of the particle size to be formed and the characteristics of the phosphor

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
  • Method for manufacturing nano phosphors, light emitting diode and method for manufacturing light emitting diode
  • Method for manufacturing nano phosphors, light emitting diode and method for manufacturing light emitting diode
  • Method for manufacturing nano phosphors, light emitting diode and method for manufacturing light emitting diode

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0070] Regarding Example 1, the brightness of a light emitting diode ("LED") package including a nanophosphor with a particle size of about 500 nm is about 97% compared to 60% for a powder of nanoparticles, thus increasing the brightness. 30% or more. If the LED package is formed by mixing the bulk phosphor and the nano-phosphor in the exemplary embodiment according to the present invention, as in Example 2, compared with the LED package of the comparative example including only the bulk phosphor , the brightness increased by 6.8%. In Example 2, particles having a nanometer size may fill voids between bulk phosphor particles and may increase a specific surface area per unit volume, thereby improving luminance.

[0071] Figure 5 is a sectional view showing an exemplary embodiment of an LED according to the present invention.

[0072] refer to Figure 5 , an exemplary embodiment of the LED according to the present invention includes: a substrate 100; a mold frame 120 on the...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

A method of manufacturing a nanophosphor includes: contacting a nanophosphor raw material and a flux to form a mixture, sintering the mixture to form a nanoprecursor, ball-milling the nanoprecursor, and drying the ball-milled nanoprecursor to form the nanophosphor, wherein an average particle size of the nanophosphor is equal to or more than about 50 nanometers (nm) and equal to or less than about 7 micrometers (um).

Description

technical field [0001] The present invention relates to a method of making nanophosphors, light emitting diodes ("LEDs") and methods of making light emitting diodes. Background technique [0002] Light emitting diodes ("LEDs") are optoelectronic devices that automatically emit light when electrically connected to a light source. Compared with known light bulbs, LEDs have various advantages, namely, size reduction and weight reduction are available, less heat is emitted, long life is available, and high-speed response is available, thereby being used in various electric and electronic products. LED. [0003] Phosphor materials for converting wavelengths used in LEDs may be used to convert light having a predetermined wavelength from various light sources into light having a desired wavelength. Specifically, among various light sources, LEDs can be effectively used as backlights for liquid crystal displays ("LCDs") and lamps for automobiles and homes due to low-power driving...

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 Applications(China)
IPC IPC(8): C09K11/80C09K11/59C09K11/62H01L33/50G02F1/13357B82Y20/00B82Y40/00
CPCC09K11/7792C09K11/7721H01L33/44G02F1/133603H01L33/50B82Y30/00Y10S977/90Y10S977/773C09K11/7731C09K11/7734C09K11/7774H01L33/502H01L2933/0041H01L33/26
Inventor 申明洲白昇桓李荣培朴赞宰
Owner SAMSUNG DISPLAY CO LTD