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movpe gan production technology that can produce high-brightness led pure blue and pure green led, also can be applied to blue, green laser diode of the production. although movpe epitaxy is a mature production technology, but this technology to produce gan blue led which still have considerable expertise, experience and skills alingap algainp. alingap this material is used in high brightness led in recent years, the manufacturing of the newer material, the use of movpe epitaxial legal process. neon signage
organic thin film through the current drive to light, the light can separate the red, blue, green, or even full color. because oled materials used in organic light itself, so unlike the lcd panel backlight behind the need to add, can significantly reduce power consumption, simplify the process, the panel thinner. characteristics of oled as a self-luminous, wide viewing angle, fast response, low power consumption, high contrast, high brightness, thinness, all lighting, and animation display, is considered to be great potential for flat panel display technology.neon sign
when this curve is determined, the device on the main wavelength, color purity, and other related parameters has also come to be. led's spectral distribution and preparation of compound semiconductors used in the type, nature and the end structure (epitaxial layer thickness, doping), etc., but not with the device geometry, the packages has nothing to do. the figure plots several compound semiconductor and doping by different 。message signs