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Archive >  February 2013 Issue >  Electronic Mfg. Products > 

Dow Corning Optical Encapsulants for LEDs
Hard-shell protection for LEDs.
Midland, MI — Dow Corning® has expanded its portfolio of phenyl silicone optical encapsulants with five new two-part, heat-curable grades. The new products offer enhanced reliability, better anti-silver corrosion and greater durability for demanding LED designs.

Delivering improved anti-silver corrosion capabilities, the OE-6662 and OE-6652 optical encapsulants offer Shore D 64 and Shore D 59 levels of hardness, respectively. The improved gas barrier performance exhibited by both grades helps to protect delicate silver-plated LED electrodes from sulfur attacks. In addition to inhibiting degradation of light output efficiency, this can also help extend the overall quality and lifetime of advanced LED designs.

New grades of Dow Corning OE-7620, OE-7630, OE-7640 optical encapsulants provide hardness ranges from Shore D 26, 29 and 43, respectively. The lower hardness of these materials translates into enhanced mechanical protection for emerging LED packaging designs. In addition, all three new grades in this advanced product family offer greatly improved thermal and photostability over incumbent materials, to ensure consistent high optical quality over the lifetime of an LED light source.

According to the company, as next-generation LED designs and applications grow ever more demanding, global lighting OEMs are seeking innovative new material solutions that can withstand the higher internal temperatures of new LEDs, as well as their increasingly harsh operating conditions. These latest additions to Dow Corning's broad portfolio of optical silicone encapsulants for LEDs deliver the performance and protection necessary to enable advanced lighting designs that provide reliable, high-quality illumination over the course of their expected lifetimes.

Contact: The Dow Chemical Company, 2030 Dow Center, Midland, MI 48674 989-636-1000 Web:
http://www.dow.com

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