Production method of high refractive index nano modified organosilicon encapsulating material

A technology of nano-modification and packaging materials, which is applied in chemical instruments and methods, other chemical processes, semiconductor devices, etc., can solve the problems of dependence on imports, achieve high transparency, excellent resistance to ultraviolet aging and heat aging, and high refractive index Effect

Inactive Publication Date: 2009-06-17
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of research and development of related products in China so far, silicone materials with high refractive index have not been reported in China, and their application in LED packaging can only rely on imports.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The ratio of raw materials is: put 140g of toluene and 100g of water in a round bottom flask, mechanically stir, and dropwise add a mixture of 10g of phenyltrichlorosilane, 10g of vinylmethyldichlorosilane and 50g of dimethyldichlorosilane. React at 140°C for 1.5h, and distill under reduced pressure to remove toluene to obtain a colorless and transparent viscous liquid.

Embodiment 2

[0016] The ratio of raw materials is: put 230g of toluene and 210g of water in a round bottom flask, mechanically stir, and dropwise add a mixture of 60g of phenyltrichlorosilane, 30g of vinylmethyldichlorosilane and 35g of dimethyldichlorosilane. React at 140°C for 1.5h, and distill under reduced pressure to remove toluene to obtain a colorless and transparent viscous liquid.

Embodiment 3

[0018] The ratio of raw materials is: put 320g of toluene and 310g of water in a round bottom flask, mechanically stir, and dropwise add a mixture of 120g of phenyltrichlorosilane, 30g of vinylmethyldichlorosilane and 35g of dimethyldichlorosilane. React at 140°C for 1.5h, and distill under reduced pressure to remove toluene to obtain a colorless and transparent viscous liquid.

[0019] (2) Preparation technology of nano-inorganic oxide sol

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PUM

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Abstract

A producing method for a high-refractive index modified organic silicon sealing material adopts a two-pack route and uses a plurality kinds of organic silicon polymer bodies provided with special function genes and produces ropy nanometer modified organic silicon polymer sealing solution together with the inorganic nanometer oxide sol through a certain technique; a thick coat on the chip is produced in a simple method before the solidification and the sealing coat with the needed performance is gained after a certain temperature process. The gained sealing material is provided with the performances of high refractive index, high transmittance, high-temperature resistance, being UV resistant and aging resistant and strong caking, thus can be applied in the sealing of the power typed LED lighting fittings.

Description

technical field [0001] Preparation of Nano-modified Silicone Encapsulation Material Background technique [0002] With the advantages of high efficiency, energy saving, green environmental protection, etc., the prospect of semiconductor white light lighting (white LED) in the lighting market has attracted the attention of all countries. With the continuous improvement of power white LED manufacturing technology, its luminous efficiency, brightness and power have been greatly improved. However, in the process of manufacturing power white LED devices, in addition to chip manufacturing technology, phosphor manufacturing technology and heat dissipation technology, the performance of LED packaging materials will also have a significant impact on its luminous efficiency, brightness and service life. The use of packaging materials with high refractive index, high UV resistance, heat aging resistance, and low stress can significantly improve the light output power and service life ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/16C08K3/18C09K3/10H01L23/29
Inventor 王芳罗仲宽青双桂吕维忠蔡弘华孙宏元
Owner SHENZHEN UNIV
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