How does the lead strip work? From the led lamp strip luminous level, LED lamp is GaN chip and yttrium aluminum garnet (YAG) packaging together made. The GaN chip emits blue light (λp=465nm, Wd=30nm), and the YAG phosphor containing Ce3+ sintered at elevated temperature is excited by the blue light and emits yellow emission, with a peak value of 550nm.
The Blu-ray LED lamp substrate is installed in a bowl shaped reflective cavity and covered with a thin layer of resin mixed with YAG, about 200-500nm. Part of the blue light emitted by the LED lamp substrate is absorbed by the phosphor, and the remaining part of the blue light is mixed with the yellow light emitted by the phosphor to get white light. Now, for InGaN/YAG white LED lamp, by changing the chemical composition of YAG phosphor and adjusting the thickness of phosphor layer, the color temperature of 35,000-10,000K can be obtained. This method of obtaining white light by blue LED lamp is the most used because of its simple structure, low cost and elevated technical maturity. This is one of the principles of ucs2904b led strip.
How does the lead strip work? On a physical level, electrons in an atom have numerous energy levels, and as they jump from higher energy levels to lower energy levels, their energy is reduced, and this energy is converted into photons that are emitted. A large number of these photons are lasers. The difference, however, is that leads emit light not by electron hops inside atoms, but by applying a voltage to both ends of the PN junction, causing the PN junction itself to form an energy level (in effect, a series of energy levels), where electrons jump and produce photons.
When an electric current is applied to the chip through a wire, electrons are pushed towards the P-zone, where they combine with holes and emit energy in the form of photons, which is how LED lights shine. And the wavelength of light, the color of light, is determined by the material that forms the P-N junction. This is also one of the principles of led light strip light.
After understanding the working principle of led light strip, we can understand led light strip from the production process of led light strip. The quality of LED soft light strip depends on the attitude of the manufacturer and the ability to own the equipment. In order to produce top-quality LED soft lamp strips, it is necessary to ensure the perfect management method and reliable incoming material inspection process. The LED placement machine with extreme precision is used for mounting, and then the welded PCB can be tested for separation, connection, testing, aging, sealing, aging and packaging of finished products through wave soldering.
Every link and step will affect the performance and stability of the LED soft light strip. The soft light strip produced by manual welding and packaging in the workshop cannot be compared with the superior-quality LED soft light strip produced by precision LED placement machine and dust-free packaging in the anti-static workshop. This is the led strip production process, in fact, is relatively complex.
Understand the production process of led light strip, led light strip is used in what aspects? At first, LED was used as the indicator light source of instruments. Later, LED with various light colors was widely used in traffic lights and large-area display screens, which produced excellent economic and social benefits. Car signal lights are also an essential application field of LED light source. Due to the quick response speed of LED, the driver who follows the vehicle can understand the driving condition as soon as possible, reducing the occurrence of car rear-end accidents. In addition, LED lights in outdoor red, green, blue full-color display, key link miniature flashlight and additional fields have been applied. That's where the led strip comes in, but it can be more complicated than that.