Phenyl silicone oil: the "optical revolution" of LED packaging materials
During the explosive period of MiniLED and MicroLED technology, phenyl silicone oil became the core material for improving light efficiency due to its high refractive index of 1.54-1.60. The refractive index of traditional epoxy resin packaging materials is only 1.50, resulting in approximately 15% of light loss due to total reflection; The LED packaging adhesive developed by Shanghai Aishi Expo increases the refractive index to 1.58 by introducing phenyl silicone oil, and with a transmittance of 99.3%, reduces the energy loss of the light source to below 5%.


This breakthrough stems from the molecular design of phenyl silicone oil: the aromatic ring structure of the phenyl group increases the molecular polarization, thereby enhancing the refractive index; At the same time, the low surface energy characteristics of silicon oxygen bonds ensure the interface compatibility between materials, chips, and phosphors. The case of Tesla's battery pack thermal conductive medium at its Shanghai factory is more convincing: after replacing Dow Corning PMX-250 with Chengguang 255 phenyl silicone oil, the thermal conductivity exceeded 0.25W/m · K, the equipment failure rate decreased by 40%, and the procurement cost decreased by 28%. From consumer electronics to new energy vehicles, phenyl silicone oil is redefining the standards for optoelectronic packaging materials.