High refractive index curable liquid light emitting diode encapsulant formulation
US8258636B1 · kind B1 · utility
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6References
10Claims
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Key dates
| Filing date | May 17, 2011 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | May 24, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/2237
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A curable liquid polysiloxane/TiO2 composite for use as a light emitting diode encapsulant is provided, comprising: a polysiloxane prepolymer with TiO2 domains having an average domain size of less than 5 nm, wherein the curable liquid polysiloxane/TiO2 composite contains 20 to 60 mol % TiO2 (based on total solids); wherein the curable liquid polysiloxane/TiO2 composite exhibits a refractive index of >1.61 to 1.7 and wherein the curable liquid polysiloxane/TiO2 composite is a liquid at room temperature and atmospheric pressure. Also provided is a light emitting diode manufacturing assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.