Lighting with the development of LED technology, a combination of LED installed in a certain way, can emit enough light for indoor lighting, such as night lamps, desk lamps, garden lamps, etc. a typical use of LED is for information display and large screen display, they are widely used in stadiums, airports, business centers and so on.
The world’s largest LED display is in Times Square in Manhattan, New York. LED backlight is very suitable for LCD because of its small size and low power consumption. The single color is the inherent characteristic of LED. It emits pure color in a narrow frequency, which is calculated by wavelength (LPK).
Wavelength is an inherent characteristic of LED chip materials. Different materials have different wavelengths, that is, different colors.
We know that white light is a synthesis of all colors, but people’s eyes do not need the synthesis of all colors in the spectrum, only need three colors (red, green, and blue). Based on this principle, people think of many ways to make white LED, the most typical one is to bury the zinc blue LED in a yellow phosphor.