LED light beads are a type of light-emitting diode, which is a semiconductor that can convert electrical energy into light energy. It changes the principle of incandescent bulbs using a tungsten filament to emit light and energy-saving lights using three primary color powders to emit light, instead using field luminescence. LED lights can use direct current voltage without the need for starter and ballast. They have a short start-up time and no flicker.
LEDs use cold light sources with low glare and no radiation, and do not produce harmful substances during use. LEDs have a low working voltage and use a direct current driving method, with ultra-low power consumption and power conversion efficiency close to 100%. They save over 80% energy compared to traditional light sources with the same illumination effect. LED lights are more environmentally friendly, with no ultraviolet or infrared rays in the spectrum. Moreover, their waste can be recycled without pollution. They do not contain mercury and can be touched safely. They are a typical green lighting source.
LEDs are solid-state cold light sources with epoxy resin packaging, anti-vibration, and no loose parts in the light body. They do not have the disadvantages of filament burnout, thermal deposition, or light decay. Their service life can reach 60,000 to 100,000 hours, more than ten times that of traditional light sources. LED performance is stable and can work normally in an environment of -30℃ to +50℃.
LED lights use the principle of red, green, and blue primary colors, and under the control of computer technology, the three colors have 256 gray levels and can be mixed arbitrarily to produce 256X256X256 colors, forming various combinations of light colors. LED combinations have a variety of color changes, achieving colorful dynamic effects and various images.
Compared with the light-emitting effect of traditional light sources, LED light sources are low-voltage microelectronic products that successfully integrate computer technology, network communication technology, image processing technology, and embedded control technology. The chip size used in the traditional LED light is 0.25mmX0.25nm, while the size of LEDs used for lighting is generally larger than 1.0mmX1.0mm. The workbench-type structure, inverted pyramid structure, and inverted chip design of LED bare chips can improve their luminous efficiency and emit more light. Innovations in LED light packaging design include high thermal conductivity metal block substrates, inverted chip designs, and bare disc casting lead frames. Using these methods can design high-power, low thermal resistance devices, and their illuminance is larger than that of traditional LED products.