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Silicones from Dow Corning
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Light Diffusion

Optimize Light Diffusion

LED display lighting and general lighting components need diffusing solutions to distribute light evenly, avoid hot spots and reduce the number of LEDs needed in an application. Dow Corning silicone additives, with tailored refractive indexes close to the base resins, are appropriate choices for LED light diffusion because they meet these requirements with virtually no effect on mechanical or FR properties.

Dow Corning provides silicone elastomer additive powders that deliver homogeneous dispersion across the total light spectrum to avoid color effects. These additives are also cost-effective, thanks to their high performance at very low loadings.

Solving Your Application Challenges

Dow Corning's silicone-based additive technology provides a range of diffusion, transmittance and haze levels for LED lighting applications in high-tech consumer electronic goods such as tablets, e-readers, mobile phones and televisions, as well as backlight modules and LED lighting plastic covers. Our additives ensure superior diffusion and high optical performance in transparent materials, including PC, PMMA and PS, used in LED plastic covers and backlight modules.

Dow Corning's silicone elastomer additive portfolio offers you multiple options:

  • High or medium diffusion and medium transmittance
  • Low to no impact on haze and a high degree of light diffusion (DLD) (at 60°C)
  • Uniform dispersion across all wavelengths
  • Reduced impact on mechanical properties
  • Good hot spot suppression
  • Very low loadings of 0.5% to 0.8%

We can also develop customized solutions to help formulators, compounders and manufacturers compete more effectively in the LED lighting market.

Product highlights include:

  • Dow Corning® 30-424 Additive (PDF): A silicone elastomer powder for PC, PMMA and PS that provides hot spot suppression and high diffusion and high haze at lower loadings than silicone- and acrylic-based competitors.
  • Dow Corning TORAY Trefil E-606 Powder: A silicone elastomer powder with a spherical shape, offering medium diffusion and high haze.
  • Dow Corning TORAY EP-2601 Powder: A silicone elastomer powder with epoxy functionality, offering medium diffusion and high haze.

Find out how Dow Corning can help you enhance the optical performance of resins and compounds with silicone property enhancement additives. It's as easy as contacting your Dow Corning representative.

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