The LED lighting market has begun to pick up in 2010, and the demand for lighting-grade LED chips has also increased. Taiwan's LED manufacturer Everstar's vice president of research and development center Dr. Xie Mingxun made a "development trend of LED chips for lighting" at LEDforum2010. Report.
Dr. Xie Mingxun pointed out that the company is reducing the gap between warm white light and cool white light technology through innovative products. The research and development target for 2010 is 130lm/W, and the target for 2013 is 150lm/W. The high-voltage driving LED chip (HV LED chip) will be an important direction for the development of LED lighting in the future. The AC-driven LED chip is more suitable for indoor lighting sources below 2W.
Dr. Xie Mingxun also introduced the US Department of Energy's goal. In 2010, the goal of cool white LED chip efficiency is 134lm/W, which can be converted to 77lm/USD. In 2010, the goal of warm white LED chip efficiency is 88lm/W, which can be converted to 40lm/USD. The actual development speed of the entire market is faster than the US Department of Energy's goal. From the LED bulbs, lm/w, heat dissipation cost, driving cost, and warm white light efficacy are the main difficulties.
Epistar currently has three series of low-medium-high (Venus, Neptune, SN) products for high-power LED chips. Among them, SN series products have good conductivity, good extraction rate and good heat dissipation compared with Venus series. specialty.
The high-voltage drive LED chip is the best solution for general lighting applications. From the 45mil x 45mil blue LED chip that the wafer has already produced, the efficiency of the HV LED chip is 20% higher than that of the AC LED chip. The current is reduced under high voltage drive, and the heat dissipation problem will be solved.
At present, Epistar has mass-produced a unique high-voltage red LED chip HF27A 27mil*60mil for lighting. At a voltage of 34V, the optimal efficiency reaches 128lm/W and the operating current is 15mA.
Industry perspective:
As an important LED chip supplier outside Japan, Europe and North America, Taiwan Powerchip is already one of the most important LED chip manufacturers outside the new national manufacturers. The LED chips supplied by the company are widely used by cross-strait operators. In addition, there are also rich experience in exporting to advanced countries.
The advantage of Jingdian is that it has independent intellectual property rights, and the production capacity has already reached a certain level. Although there are some distances from the leading manufacturers in terms of R&D energy, there are new solutions from HV LEDs, AC LEDs and general DC LEDs. The plan comes out and the future development is also worth looking forward to.
Dc Relay,Dc Power Relay,Condenser Contactor,Voltage Protection Relay
NanJing QUANNING electric Co.,Ltd , https://www.quanningtrading.com