Taiwan's Jingyuan Optoelectronics Wang Xiwei pointed out that Jingyuan Optoelectronics has four technical advantages in the seventh SSL, and these four technologies are also the future development direction of LED lighting technology.
1, the luminous flux of the bulb reaches 800 lumens
800 lumens LED bulbs can replace 60W incandescent lamps. In this regard, Philips and Toshiba have already taken the lead in the market. The Philips 800lm LED replacement lamp is priced at $10 in 2013 and will be accepted by the market. 800 lumens refers to the luminous flux of the bulb, so the luminous flux at the package level should be around 1000 lumens.
2. The price drops to a range acceptable to consumers
Another important indicator is lumens per US dollar. According to the DOE roadmap, it can reach 500lm/$ in 2015. In terms of cost performance, Asian companies are more competitive. I believe that in 2012, we can reach the target of 500lm/$. The algorithm of 500lm/$ is very simple, because according to McKinsey analysis, when the price of 60W LED replacement lamp is 10 dollars, it can be accepted by the market, so the package cost is 2 dollars, the luminous flux is 1000 lumens, so when the package reaches 500lm/$, Can be accepted by the market.
3, HV / AC LED indoor lighting application program
Wang Xiwei believes that HV/AC LED is the best solution for indoor lighting applications. Jingdian is the first manufacturer to introduce high-voltage LED. It has already started mass production in the second quarter of this year, from the 45mil x 45mil blue LED chip that the wafer has already mass-produced. The efficiency of the HV LED chip is 20% higher than that of the AC LED chip. Wang Xiwei explained why high-voltage LED is used. To achieve 1000 lumens LED, it needs 6.6W @ 150lm/W. There are two ways to achieve this index: 2A @ 3.3V and 30mA @ 220V, for LED and power supply. In terms of converter efficiency, low current is much easier than high current. Moreover, the current is reduced under high voltage driving, and the heat dissipation problem will be solved.
4, solve the light effect and color rendering index
Generally, the luminous efficiency of the warm white LED produced by the method of exciting the phosphor by the chip is lower than that of the cool white light, and the crystal photoelectric adopts the method of adding the red LED to solve the contradiction between the light effect of the warm white LED and the color rendering index. Recently, Epistar has announced the availability of a highly efficient red-light AlGaInP LED chip with a laboratory efficacy of up to 168 lm/W, 20 mA, 180 lm/W, 6 mA, with a dominant wavelength of 610 nm.
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