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Silicones from Dow Corning
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Silicone Optical Encapsulants
for LED Lighting

The clear choice for brighter, longer-lasting LEDs

Whether the goal is to optimize LED efficiency, reliability or cost of ownership, Dow Corning’s industry-leading portfolio of high-performance optical-quality silicone encapsulants offers a full range of solutions for LED modules, lamps and luminaires.

Offering optimized refractive index (RI) values and a versatile selection of viscosities and hardnesses, our portfolio of optical encapsulants expand design freedoms suitable for a variety of middle and high-power LED package types, including surface-mount, lens mold and chip on board architectures. Dow Corning® optical encapsulants also expand processing options, from dispensing materials to enabling overmolded lens designs.

Improve efficiency
The global leader in optical-quality phenyl silicones, Dow Corning brings a decade of rigorous research and development in the technology backed by a rich patent portfolio. Our cutting-edge phenyl encapsulant materials offer refractive indices as high as 1.54 to enable LED designs that deliver up to 7 percent greater light output compared to those based on methyl chemistry. Achieving a comparable improvement from an LED chip would require significant investment.

Protect and seal for greater reliability
Dow Corning® optical encapsulants offer higher thermal stability compared to conventional organic LED encapsulation materials, enabling longer maintenance of light quality. In addition, our phenyl-based encapsulants offer a comparatively stronger gas barrier than methyl technology to minimize degradation of light output efficiency  by protecting  delicate  silver-plated LED electrodes from sulfur attack, while our methyl-based materials offer slightly greater photothermal stability to minimize yellowing and degradation in performance after long exposure to high heat and strong light.

Learn more in our encapsulants tutorial.

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Enhancing LED
package design flexibility
Enhance reliability and performance
Find out how silicones can help enhance the efficiency, durability and overall cost of your LED lighting design.
Enhanced corrosion
Learn about Dow Corning® OE-7662 and Dow Corning®
OE-7651N Optical Encapsulants.
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