Shin-Etsu develops silicone reflector material for high-brightness LEDs

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Shin-Etsu Chemical has developed new silicone products used for high brightness LEDs. The new SWC Series is designed to greatly improve the brightness performance of LEDs. The protective film materials are transparent and possess high heat resistance.

These new materials will be used to improve the performance of high-brightness LEDs that are used for lighting products and for backlighting units in LCD TVs. A reflector improves brightness by reflecting the light emitted by LEDs to the front of the display. Currently, polyphthalamide (PPA), a thermoplastic resin, has mainly been used for reflectors.

However, PPA has the big drawback. Because of its changes in color as a result of rising high temperatures of chip surfaces or in the presence of strong LED light, the light’s reflection efficiency deteriorates and lowers the brightness of LEDs.

For this reason, a new reflector material, which assures long-term quality for the use of lighting applications, was sought after that has superior characteristics. The advanced silicone reflector material for LED housing that Shin-Etsu has developed meets this requirement.

The SWC Series is a silicone-based material that has superior heat resistance and photo-thermal stability properties. It has characteristics that other reflector materials cannot offer. It reflects light with a high efficiency of more than 98%.