Silicone For Optical amp; LED’s Customer given version revised Nov2005.ppt

Silicone Solution For Optical LED’s Electronics Advanced Technologies Industry Dow Corning Dow Corning materials for LED Application Content Dow Corning profile Silicone meets LED applications Silicone for LED applications Encapsulant for LED packaging Moldable material for discrete lens Product Line Encapsulant (gels, elastomers, resins) Material for Molded Lens Future Challenge Dow Corning Dow Corning Corporation Silicone Meets LED’s What is Silicone? Difference between Silicon vs. Silicone Polymeric Si-based Molecule: Polydimethylsiloxane (PDMS) Features/Benefits of Silicone Low Moisture Absorption for Silicone Transparency of Silicone Excellent Reliability of Silicone Features of Silicone relevant to LED applications Methyl type : Broad types of products, 1.41 = Normal Refractive Index Phenyl type : Product line Enhanced typically for LED use, 1.53 = High Refractive Index Transparent material that has Thermal Stability High temp’ resistance at 150-180℃ regularly, and available at 250℃ or higher for reflow Die electric and elastic feature to protect LED chips Availability to adhere to broad ranges of relevant plastics UV resistance Availability to meet the requirements by developing or adjusting the likely materials in a quick manner Challenges for LED application Requirements for White LED/ SMT type Non Yellowing by UV and Heat High light transmittance at UV area Easy to disperse phosphor Good Adhesion to GaN chip and PPA(Poly Phthalic acid Amido) or Ceramic Low moisture absorption Wide range of product deployment Silicone Products Line Adopted for Optical LED use at the beginning stage for silicone Typical properties of JCR adopted for LED use   JCR product line Elastomer available for LED  JCR product line Gel available for LED  Silicone Materials Development Roadmap for Optical