How much do you know about led beads
The first stage is the LED lamp utility model stage.
On the basis of the previous stage, the market has recognized and accepted LED lamp products to a certain extent. The environmental protection, small size, high reliability and other characteristics of LED lamps are gradually highlighted. Therefore, a series of products that are completely different from traditional light source applications will become popular. The lighting industry will have a larger and wider development space. The light source no longer only serves as illumination, but its variety makes it more suitable for people's work and life. Each manufacturer strives for the advantages of design and application.
The second stage is the intelligent control stage of LED lamps.
With the development of new technologies such as the Internet of Things, LED, as a semiconductor industry, will also take this high-speed train to play its highly controllable characteristics. From home to office building, from road to tunnel, from car to walk, from auxiliary lighting to main lighting, LED lighting system with intelligent control will bring higher level services to human beings. The LED lamp industry will also go from making products to designing products to providing overall solutions.
The third stage is the replacement acceptance stage of LED lamps.
This stage refers to the early development of LED lamps, which mainly reflects the characteristics of high luminous efficiency (low energy consumption) and long life. Because of the high price, it is mainly the commercial photo market at this stage. The customer has a process of acceptance, first of all, the transition and acceptance of usage habits and appearance. In accordance with the use of traditional light sources, the characteristics of LED lamps, such as power saving and longevity, make it easy for the market to accept its relatively high price. Especially in commercial occasions. All manufacturers strive for the advantage of quality and price.
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How much do you know about led beads
There are many welding methods for LED lamp beads on the chip, and the following is one of the commonly used methods for reference. First, use an electric soldering iron to heat some soldering tin on the positive and negative electrode pads of the lamp bead (the soldering tin must not be too much, otherwise, the positive and negative electrode pads will be connected once heated with a hot-air gun), then use a hot-air gun to heat the positive and negative electrode pads at the same time, after the tin melts, use tweezers to place the positive and negative electrodes of the lamp bead on the corresponding pad.
LED is the light emitting diode, which is a semiconductor solid light emitting device that converts electric energy into light energy. Its core is the PN junction. In addition to the forward conduction, reverse cut-off and breakdown characteristics of the general PN junction, it also has the light emitting characteristics under certain conditions. Its structure mainly includes the following parts: lead, bracket, encapsulation glue, bonding wire, LED chip, solid crystal glue and phosphor. The discoloration failure of LED lamp bead is closely related to its material, structure, packaging process and service conditions. The following will analyze the causes of its discoloration through specific cases.
LED lamp beads are also called light emitting diodes. It has a wide range of applications. Its luminous colors include red light, emerald green light, yellow green light, yellow light, purple light, blue light, white light and orange light. The above is monochromatic light. It can also be made into two or three colors.
The gold wire used to package LED lamp beads contains more than 99.99% gold. It is produced by drawing gold from this material. In addition to 99.99% gold, this gold also contains less than 1% other trace elements. One of the core components of LED lamp bead packaging is gold wire, which is the bridge connecting the luminous chip and the welding point, and plays a decisive role in the service life of LED lamp bead. So how to identify the purity of gold thread?