This two-year project is aimed to enhance the optical efficiency, color rendering index (CRI), and power management of white LED based on the development of novel packaging techniques, electronic controlling driver and theoretical evaluation of thermal effect. These innovative technologies will result in patent deployment in the field of energy-saving indoor illumination. The goal is to produce the next generation emitter to replace fluorescent light tubes and become the primary light source in the world.The project can be divided into four subprojects. The first subproject will focus on the development of high-efficiency and energy-saving phosphor packaging, which is believed to produce the energy-saving white LED with superior CRI and packaging efficiency. The second subproject is devoted to the development of high-efficient white LED with well-controlled light pattern and array phosphor. In order to achieve long working-time LED with high efficiency, the second subproject will develop die attach technique with low thermal resistance. The third subproject involves the design of electronic controller for high-power LED. The controller is to optimize the thermal dissipation of high-power LED through a novel current variation technique. The dynamics among light, heat accumulation and turn-on voltage during the initial lighting stage of LED will be systematically analyzed. Electronic circuit design will be performed to achieve the white LED with exceptional thermal management and luminous efficiency. The fourth subproject is to theoretically analyze the thermal effect of phosphor on the efficiency of white LED. With state-of-the-art calculation tools, we aim to evaluate the temperature of phosphor in different regions of an LED package and develop the scheme for high-power white LED with excellent heat sinking. Integrating the four subprojects will render the light source with high efficiency, high CRI and low power consumption, which is strongly desired for general lighting.
|Effective start/end date||1/01/17 → 31/12/17|
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