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Phosphor-containing curable silicone composition for LED and LED light-emitting device using the composition

A technology of curable silicone and composition, applied in luminescent materials, chemical instruments and methods, semiconductor/solid-state device parts, etc., can solve problems such as corrosion, vulcanization of metal components, deterioration of long-term reliability of light-emitting devices, etc. Effect of sulfidation and corrosion, stability improvement

Active Publication Date: 2008-01-30
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of these red phosphors tends to cause corrosion, leading to sulfidation of metal components such as metal electrodes, which means that the long-term reliability of light-emitting devices is prone to deterioration

Method used

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  • Phosphor-containing curable silicone composition for LED and LED light-emitting device using the composition
  • Phosphor-containing curable silicone composition for LED and LED light-emitting device using the composition
  • Phosphor-containing curable silicone composition for LED and LED light-emitting device using the composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] To 100 parts of dimethyl polysiloxane terminated with vinyl dimethylsiloxy groups at both ends represented by the average molecular formula (i) shown below:

[0057]

[0058] (Where L (average) = 450)

[0059] Add the organohydrogen polysiloxane represented by the average molecular formula (ii) below,

[0060]

[0061] (Where M (average) = 10, N (average) = 8)

[0062] The addition amount is sufficient so that the molar ratio of the SiH group in the organohydrogen polysiloxane to the vinyl group in the vinyl group-containing dimethyl polysiloxane represented by the above formula (i) is 1.5, which is compared with 0.05 Parts of the octanol-modified chloroplatinic acid solution, 3 parts of YAG phosphor and 3 parts of calcium sulfide phosphor are mixed, and the resulting mixture is thoroughly stirred to form a mixture. To 100 parts of the mixture thus obtained was added 1 part of antimony-free magnesium-based inorganic ion exchanger (product name: IXE700F, produced by Toag...

Embodiment 2 to 5

[0064] In Examples 2 to 5, with respect to 100 parts of the above mixture, except that the addition amount of the magnesium-based inorganic ion exchanger was changed to 2, 5, 10, and 30 parts respectively, the same method as in Example 1 was used to prepare the liquid phosphorescent light. Body silicone rubber composition.

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Abstract

Disclosed are a curable silicone composition for an LED and an LED light-emitting device that uses such a composition as a sealing material. A curable silicone composition for sealing an LED is disclosed that comprises a phosphor and an inorganic ion exchanger, wherein the quantity of the inorganic ion exchanger is within a range from 0.1 to 50% by mass. This composition is ideal for sealing an LED element in an LED light-emitting device. Corrosion of metal electrodes and the like does not occur even in the presence of red phosphors that contain sulfur.

Description

Technical field [0001] The present invention relates to a phosphor-containing curable silicone composition for LEDs, and in particular to a curable silicone composition: through the phosphor contained in the silicone composition, the light emitted by the LED chip The color is changed, and the present invention also relates to an LED light-emitting device using the composition. Background technique [0002] In conventional LED light emitting devices using such phosphor-curable silicone composition, the LED chip mounted on the package is covered by a translucent molding element, which protects the LED chip from Violation of the external environment. An appropriate amount of phosphor, for example, within 0.3-30% by mass, is mixed in the molded element. This phosphor converts the wavelength of the light emitted by the LED to a longer wavelength and is used to change or adjust the color of the emitted light. In traditional examples of this type of LED light-emitting device, yellow YAG...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10C08L83/04C08K3/00H01L23/29H01L33/50H01L33/56
CPCC08K5/49C08G77/20C09K11/02C08K5/56C08L83/04C08G77/12H01L2224/48091H01L2224/73265C09K11/08C08L83/00H01L2924/00014
Inventor 今泽克之柏木努
Owner SHIN ETSU CHEM IND CO LTD