Solvay Specialty Polymers USA announces a new high-performance polyester compound that delivers higher heat and light stability than competitive materials for LED televisions. The new class of compounds, branded Lavanta, is an extension of the company's high-performance polyester line, which includes materials such as Xydar liquid crystal polymer (LCP) for electronic components such as connectors.
Among television manufacturers, there is a growing trend to use fewer LEDs to reduce cost. This is accomplished by sending higher amperage (current) through the LED, resulting in significantly higher junction temperatures above 212° F and greater brightness. Previously used materials are unable to withstand the higher heat and light output, discoloring prematurely in applications such as reflector cups.
The first grade in the series, Lavanta 5115 WH 011, is a 15% glass fiber-reinforced injection molding compound developed specifically for LED electronic packaging applications that utilize surface mount technology. The material has high reflectivity (greater than 95%) with excellent whiteness retention even after thermal and light aging. This gives it excellent reliability for LEDs that operate at high junction temperatures. Lavanta 5115 WH 011 can fill very thin-walled sections required for low-profile, side-view LEDs. It also has excellent dimensional stability due to its low moisture absorption and exceptional weld line strength.
In the near future, Solvay plans to expand the Lavanta product series with an enhanced version with even greater heat and light stability for longer product life and reliability. In addition to LED TV applications, the material is targeted for general lighting for indoor and outdoor applications.
For more information, contact Solvay Specialty Polymers USA, 4500 McGinnis Ferry Rd., Alpharetta, GA 30005-3914. Phone: (770) 772-8200.