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JINLING Chen

KIM Chen
 
Chi ming Electronics Co., Ltd. was established in Taiwan in 1984. Has nearly 38 years of experience. Manufacturing LED car lights, LED truck lights. Serving the needs of customers is the most important goal.

News & Events>>Research & Develop

Subject: Automotive LED-3157 13HP3 LED
2009-12-22


LED material properties requirements: 1. Optical performance (take-ray efficiency): refractive index, high penetration 2. Physical properties (high heat dissipation): low thermal expansion coefficient (organic material expansion coefficient (50 ~ 80ppm) is greater than the chip (5.6 ~ 7.9ppm), if the cause stress Yi degumming / broken gold wire), high thermal conductivity (the chip is colloid around, if high thermal conductivity to resolve LED heat problem), heat stability (organic material easy to yellow)