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Optically reliable nanoparticle based nanocomposite hri encapsulant, photonic waveguiding material and high electric breakdown field strength insulator/encapsulant

A technology for encapsulating materials and nanoparticles, applied in the fields of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, it can solve the problems of color maintenance, light reduction, low efficiency, etc. The effect of suppressing resistance and thermal decay

Inactive Publication Date: 2007-12-05
NANOCRYSTAL LIGHTING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When red LED chips are compared with UV / blue-violet or blue LED chips, due to their shorter service life and greater efficiency reduction when the room temperature rises, there will be color maintenance problems, and the driving circuit is more complicated
However, the current approach is very inefficient due to the low photoconversion efficiency of UV / blue-violet excitable RGB phosphors
In addition, the light efficiency of the phosphor containing package is only about 50% to 60%, resulting in less light emitted

Method used

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  • Optically reliable nanoparticle based nanocomposite hri encapsulant, photonic waveguiding material and high electric breakdown field strength insulator/encapsulant
  • Optically reliable nanoparticle based nanocomposite hri encapsulant, photonic waveguiding material and high electric breakdown field strength insulator/encapsulant
  • Optically reliable nanoparticle based nanocomposite hri encapsulant, photonic waveguiding material and high electric breakdown field strength insulator/encapsulant

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Embodiment Construction

[0016] The present invention relates to the manufacture and use of treated nanoparticles comprising coated with an organic functional group and dispersed in an epoxy or silicone polymer, exhibiting a refractive index of RI ~ 1.7 or above and having α -1 low values ​​of light absorption coefficient. High refractive index (HRI) packaging materials can be annealed at 80°C to 100°C for several hours during hardening and high temperature storage reliability test at 100°C can reach a layer thickness of several mm without cracking. This is in contrast to the photonanocomposites described in the literature having thicknesses of the order of only 0.01 mm after hardening with α > 1 cm -1 The characteristics are different, so the latter cannot be used in LED lamps, because the thickness of the LED chip is at least 0.1mm.

[0017] The invention also relates to the manufacture and use of compositionally modified titanium dioxide (TiO 2 ) nanoparticles, endowing HRI packaging materials wit...

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Abstract

An optically reliable high refractive index (HRI) encapsulant for use with Light Emitting Diodes (LED's) and lighting devices based thereon. This material may be used for optically reliable HRI lightguiding core material for polymer-based photonic waveguides for use in photonic-communication and optical-interconnect applications. The encapsulant includes treated nanoparticles coated with an organic functional group that are dispersed in an Epoxy resin or Silicone polymer, exhibiting RI - 1.7 or greater with a low value of optical absorption coefficient a < 0.5 cm-1 at 525 nm. The encapsulant makes use of compositionally modified TiO2 nanoparticles which impart a greater photodegradation resistance to the HRI encapsulant.

Description

technical field [0001] The present invention relates generally to solid state lighting applications, and in particular to optically reliable high refractive index (HRI) encapsulants for light emitting diodes (LEDs) and LED-based lighting devices. The present invention also relates to optically reliable high index lightguiding core materials for polymer-based photonic waveguides for photonic communication and optical interconnect applications. Background technique [0002] LEDs have recently been used in lighting applications due to their energy efficiency, especially in specialty lighting applications where incandescent and halogen lamps were previously less efficient. At present, there are three main methods can be used to produce "white light" LED. The first uses red, green and blue (RGB) LEDs, plus secondary-optics for color mixing, to produce white light. This method can provide a good white light effect, a color rendering index (CRI) of about 85, and energy efficiency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/16H01L33/56
CPCH01L33/56C08L83/04C08L83/06C08K9/06B82Y30/00C08K3/22C08K7/02C08L63/00
Inventor 尼基·R·塔斯卡维沙·赞巴拉唐纳德·朵曼巴拉第·S·库卡尼
Owner NANOCRYSTAL LIGHTING
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