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發表於 2012-6-16 19:58:06
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Блоги / Блог пользователя iksog /
LED chip
Блог пользователя iksog
Вчера, 15 июня, 07:20 , ссылка
Blue LED chip LED general lighting market
Theoretically speaking, LED is used in lighting, must be able to synthesize and natural daylight for the same or similar white. In the blue chip before appearing, LED cannot be used in lighting, because the red and yellow Guangguang efficiency is low, the two is not able to get a blue,dab4d52ck green. Japan's Dr. Nakamura Shuji in the invention of blue chip shortly after the invention of the blue chips, with yellow fluorescent powder synthesis white-light technology. Later, Japan's Mitsubishi Chemical R & D out of the red and green fluorescent powder, with blue chips can produce colored better white. The two scheme is the current mainstream A19 LED Light Bulb white scheme. There is a plan, is to use ultraviolet LED chip with red, green, blue and white light fluorescent powder synthesis. Because blue light, ultraviolet light carrying the maximum energy, can excite the fluorescent powder form white light, and the red and yellow light makes it difficult to achieve this point.
Red chip into the field of illumination is the only way with blue, green, red chip synthesis white, theoretical synthesis fluorescent quality should be the best, but red chip and the blue green light wavelength, light efficiency, light and other performance indicators to exist bigger difference, driving circuit can be very complex, to the two chip, uniform stability such requirements are higher, encapsulating the difficulty may also greatly,Air Mouse so this scheme could only be in the high-end lighting there are certain market demand. At present, most white schemes are adopted in blue chip surface is coated with fluorescent powder and form. Therefore, the present and the future, may have been the blue LED chip LED general lighting market.
According to the brightness of LED division, can be divided into general LED brightness and high brightness LED. Average brightness LED consists of GaP, GaAsP and AlGaAs and other materials, including red, orange, yellow light products. High brightness LED consists of AlGaInP and GaN and other materials, including red, orange, yellow, green, blue and white light products. Different brightness LED have different application areas. In recent years, high brightness LED has gradually become the mainstream in the development of LED industry, and high brightness white light LED dominated the LED backlight and lighting market.
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發表於 2012-6-16 10:33:39