The important part of the LED display is LED lamp beads and LED unit boards. If any of them have problems, it will directly affect the overall quality of the LED display! So, how to distinguish the quality of LED lamp beads and LED unit boards is the quality of the LED and LED unit boards. The issues that LED display merchants care about, here is a common method for detecting the quality of LED lamp beads and PCB unit boards. I hope it will be helpful to the LED display merchants. In addition, the quality is the king. The product and device that refuses the cheap and shoddy is also the need to do by the manufacturer, so as not to damage the effect of the normal work and the unnecessary maintenance of the subsequent. LED unit board. Some LED unit board manufacturers use cheap flame retardant paper boards or single -sided fiber boards as the LED lamp as the LED lights for low prices. Because all glass fiber PCB boards are expensive. At the beginning, the difference can not be seen. Generally, if it is not one year, it will break due to moisture, ultraviolet destruction, oxidation, etc., causing the entire LED unit board to be scrapped. High -quality LED unit boards must be double -sided all -off glass fiber PCB board. Although the cost is high, the quality is guaranteed. Observe whether the brand of IC devices use is consistent. What model of IC and how many ICs are used, which is enough to affect the quality of the LED unit board. Some LED display manufacturers, in order to save costs, will deliberately reduce the number of ICs during the production unit board, or mixed with other brands of IC. Beads and chips. The naked eye cannot distinguish the quality of the lamp beads. It can only be based on long -term tests, that is, the aging test that experts say. The approach of the general LED display manufacturer is: power to power before the factory, check whether the LED display can operate normally, will not be tested for a long time. Because a lot of time and labor costs require a lot of time and labor costs. Welding quality: Check whether there are component leakage stickers, wrong stickers, and whether there are component tube feet and burrs short circuit. Check whether the direct plug -in welding joints are smooth and round, whether the board surface is clean and neat, and no virtual welding welding. Check the consistency of the flatness of the light and the color of the ink. Power -powered test: The consistency of the lighting point of the power -powered test; whether the power -on test is effectively protected by CEM4953;. The main material composition of LED lamp beads packaged includes brackets, chips, solid crystal gums, key lines and packaging gels, etc. SMD (Surface Mountain Devices) refers to the surface -packed packaging structure LED, which mainly include the LED (Chicled) and PLCC structures of the PCB board structure. Let s introduce some of the current domestic development status in the aspects of packaging materials. Role of a bracket. PLCC (Plastic Leaded Chip Carrier) bracket is the carrier of the SMD LED device, which plays a key role in the reliability and light of LED. The PLCC bracket production process mainly includes the processes of metal material bands, electroplating, PPA (polybinzide) injection molding, bending, five -sided three -dimensional inkjet and other processes. Among them, electroplating, metal substrates, plastic materials, etc. occupy the main cost of the bracket. The structure improvement design of the bracket. Because the PPA and metal binding are a physical binding, the gap will become larger after the high temperature return furnace, which makes it easy for water vapor to enter the device along the metal channel to affect the reliability of reliability. In order to improve product reliability to meet high -quality LED display devices that meet the needs of high -end market, some packaging factories have improved the structural design of the bracket, such as adopting advanced waterproof structure design, bending stretching and other methods to extend the water vapor of the bracket into the path entering the path into the path. At the same time, multiple waterproof measures such as waterproof tanks, waterproof steps, and waterproof holes are added inside the bracket. This design not only saves packaging costs, but also improves product reliability. At present, it has been widely used in outdoor LED display products. After being packed and normal brackets to test the qi of the LED bracket designed by SAM (Scanning Acrentic Microscope). The LED chip is the core of LED lamp beads, and its reliability determines the life and luminous performance of LED lamp beads and even LED display. The cost of LED chip accounts for the total cost of LED device is also very large. With the decrease in cost, the size of the LED chip has become smaller and smaller, and it also brings a series of reliability issues. With the reduction of the size, the PAD of the P electrode and the N electrode also narrowed. The reduction of the electrode PAD directly affects the quality of the welding line. At the same time, the distance A between the two PADs will also shrink, which will cause the electrode current to excessively increase the current density, the current gathers locally at the electrode. Excessive high, uneven brightness, easy leakage, electrode drop, and even low light efficiency, etc., eventually led to the reduction of the reliability of the LED display. The key line is one of the key materials for LED packaging. Its function is to realize the electrical connection of the chip and pins, which plays the role of chip and the outside world. LED device encapsulates common key lines including gold, copper wires, copper -plated copper lines, and alloy lines, etc. (1) Goldline. The golden line is widely used, the process is mature, but the price is expensive, resulting in the high cost of LED's packaging. (2) Copper thread. Copper threads have the advantages of cheap, good heat dissipation effects, and slow growth of metal intervertebral compounds during the welding line. The disadvantage is that copper is easy to oxidize, high hardness, and high strain intensity. Especially in the heating environment of the keyhearted copper roasted ball, the surface of the copper surface is very easy to oxidize, and the formed oxide film reduces the albuming performance of the copper wire. This proposes higher requirements for the process control in the actual production process. (3) Plating 线 copper wire. In order to prevent the oxidation of copper wires, the copper -plated copper wire gradually attracted the attention of the packaging industry. The advantages of high mechanical strength, moderate hardness, well -welded and so -sized sphere are suitable for high -density, multi -footed integrated circuit packaging. At present, the glue encapsulated by the LED display device mainly includes two types of epoxy resin and silicon silicon. (1) epoxy resin. Epoxy resin is prone to aging, easy to be damp, heat -resistant, and is easy to change color at short -wave light and high temperature. It has a certain toxicity in the state of glue. The thermal stress does not match the LED. Therefore, epoxy resin is usually offensive. (2) Organic silicon. Compared with epoxy resin, organic silicon has a high cost -effectiveness, excellent insulation, dielectricity, and closeness. But the disadvantage is that the gas tightness is poor, and it is easy to suck. So it is rarely used in the packaging application of the LED display device. Transfer from [Soso LED Network] [Tags in this article] Patching LED Lighting Drink Lighting Bead LED Lighting Bead Manufacturer LED Lighting Drives Vehina Polar Tube [Responsible Editor]

Author: Tianhui-Air Disinfection Author: Tianhui-UV Led manufacturers Author: Tianhui-UV water disinfection Author: Tianhui-UV LED Solution Author: Tianhui-UV Led diode Author: Tianhui-UV Led diodes manufacturers Author: Tianhui-UV Led module Author: Tianhui-UV LED Printing System Author: Tianhui-UV LED mosquito trap

Different properties of the printed matter should be selected for different inks. Consider the light transmission, curing rate, the coverability of the ink, and the gloss of the marks on the surface of the ink. In color printing, the ability of various pigments to absorb UVLED photons is different, and its pass rate is from high to low to M, Y, C, BK, so the degree of solidification of various colors of ink is also different. Through the rate directly affects the energy of photon's inspiration agent, so the printing color order should be arranged as BK, C, Y, M ink with poor light transmittability as much as possible to absorb the photon as much as possible and enhance its solidification effect. Using the wine fine -moisturizing system can reduce the surface tension of ink and promote solidification, and during the printing process, the liquid liquid can be used to strengthen the printing oil dredging area (blank part) The hydrophilic area does not have ink. Improve the ink formula and add the corresponding additives to increase the hydrophobicity of the ink, but excessive hydrophobicity can cause the image edge ink contraction, subtle layers of loss, unclear outlet boundary, etc., affecting the quality of the prints, etc., affecting the quality of the print. UVLED printing requires high surface strength on the surface of the paper, and the surface strength is not prone to pulling hair failure. When printed with gold and silver card paper, due to the smooth surface of these paper, the affinity of ink is less affinity. The second color is printed when the first color is printed. Color ink pull off. Therefore, in the UVLED printing, a paper with a large surface tension should be selected, and the color order should be arranged reasonably to adjust the related process parameters in the printing process to avoid and reduce the occurrence of the above phenomenon. More information is welcome to log in

Author: Tianhui-Air Disinfection Author: Tianhui-UV Led manufacturers Author: Tianhui-UV water disinfection Author: Tianhui-UV LED Solution Author: Tianhui-UV Led diode Author: Tianhui-UV Led diodes manufacturers Author: Tianhui-UV Led module Author: Tianhui-UV LED Printing System Author: Tianhui-UV LED mosquito trap

The relationship between LED lamp beads and static electricity is used in the PN knit inside the LED lamp beads to manufacture, assemble and screen, test, packaged, storage, transportation, and installation and use of electronic products. Discharge between the two electrodes of the LED lamp chip at a very short moment (nan second second -second), and the conductive layer and luminous layer of the lighting layer between the two electrodes (where the resistance is minimum) will be instantly. The internal material inside the chip generates a local high temperature, and the temperature is as high as 1400 C. This extremely high temperature melts the material layer between the two electrodes and melts into a small hole, which will cause the abnormal phenomenon of various types of leakage, death, and darkening. Different enterprises, differential processes, differential substrate materials, different design and manufacturing LED lamp chip chip anti -static is also very different. Today, the height of the anti -static electricity in the market is very different, and the fishmark is mixed beads. If the charge is not released in a timely manner, a higher potential difference formed on the two electrodes will be formed. When the charge energy reaches the limit of LED lamp beads (this is the value of the LED lamp beads anticoigators), the charge will be instantaneous in an instant freed. Once the enterprise encounters the dullness of LED lamp beads, the light leakage of the lights is dark, and it will always be chaotic to strengthen the electrostatic management of the production workshop, such as grounding, laying static radio cushions, ionic fan, etc. The method, static electricity is everywhere, it can be said that it is;. Because the anti -static index of LED lamp beads used is low, it is similar to a healthy newborns who are cured the day after tomorrow. The anti -static bump of LED lamp bead has nothing to do with the packaging of LED lamp beads, depending on the chip itself. Some companies adopt the addition of the addition of the Qina diode to protect. This is a remedy method used in the early stage. Now, the process of LED lamp chip chips has continued to improve. The company's selection of LED lamp beads (chips) with high antistatic indicators (chips) will be able to completely solve the quality chaos such as leakage and death of LED lamp beads from static electricity, because LED lamp beads with high anti -static electricity can adapt to various environments For example, LED lamp beads are more than 2000V, and it can generally receive static electricity under our ordinary environment. LED lamp beads above 3000V can be placed forever in the environment where the electrostatic control is not determined to strengthen the electrostatic control. The article comes from LED lamp beads http://.

Author: Tianhui-Air Disinfection Author: Tianhui-UV Led manufacturers Author: Tianhui-UV water disinfection Author: Tianhui-UV LED Solution Author: Tianhui-UV Led diode Author: Tianhui-UV Led diodes manufacturers Author: Tianhui-UV Led module Author: Tianhui-UV LED Printing System Author: Tianhui-UV LED mosquito trap

At present, many friends and individuals who do advertising all over the country have joined the LED brightening project, but the lack of information and experience related to this industry on hand, resulting in the business cannot be carried out. There is no enough information to communicate with customers, so that the hard -earned machine can pay the East Water; in order to introduce relevant knowledge to you, how to carry out related businesses. 1. You must understand the corresponding LED products; there are many types of LED products, and the lighting project is as large as the following products. 1. Digital tubes, also known as LED guardrails, LED guardrails, LED contour lights; this product is often used for building contour installation, KTV door or advertising signboard, and highway and bridge guardrail brightening items; Chasing, scanning and other effects; if it is made into an LED digital tube screen (LED digital signboard), a variety of dazzling animations and flower types can be produced, and videos can also be played; : Monochrome is often bright red, yellow, blue, green, white; colorful divided into: single section colorful gradient jump; true six sections, true eight sections, 16 paragraphs, 16 paragraphs, 32 paragraphs, 48 paragraphs, 48; press; The control method is divided into: internal control and external control; the internal control LED guardrail pipe is to directly write the required program into the working IC chip of the LED guardrail tube. The external controller is needed; the controller is divided into the decapatic system and the online system; the online system refers to the control system that works depends on the computer (mostly used for LED digital tube screen); , After receiving the electricity, you can enter the control signal driver LED guardrail pipe. 2. Rainbow tube, also known as LED light belt, LED beauty light resistance; is one of the most commonly used products in the lighting project, and the price is relatively cheap. It is mainly suitable for places where the cost is not high, and the required effect does not require too dazzling; can be used as a building or signature contour; ironing or shape surrounding; smallpox or KTV dark groove decoration, etc. LED Rainbow Tube Category: Round Second Line, Round Third Line, Bian Second Line, Fang Second Line, Fang Line, Bian Four Line, Bian Five Line, Bian Qi Line, etc.; Blue, red, yellow, blue, red, blue, blue -green, etc.; Generally the controller can achieve the flash effect through the controller. 3. The decorative light series include LED star lights (LED light string), LED net lights, LED waterfall lamps, LED full star stars. These are generally used for flowers and trees or small landscape decorations. For example: To make a brightening effect of a tree, you can use multiple LED star lights to wrap the branches, and then flash through the controller to become some colorful flashing LED Christmas tree lamps. There are many products, which are not listed here. The commonly used is LED dot light sources, LED neon lights, LED electronic display, LED light lamps, LED high -power wall lamps, LED buried lights, LED water bottom lights, LED landscape trees , LED sucking characters are also commonly used. These need to be understood slowly in order to truly recognize these products. In the project, select the corresponding lighting lamps.

Author: Tianhui-Air Disinfection Author: Tianhui-UV Led manufacturers Author: Tianhui-UV water disinfection Author: Tianhui-UV LED Solution Author: Tianhui-UV Led diode Author: Tianhui-UV Led diodes manufacturers Author: Tianhui-UV Led module Author: Tianhui-UV LED Printing System Author: Tianhui-UV LED mosquito trap

How to choose the LED light source? From the following 5 aspects, the manufacturer editor will take the right LED light source. 1. Look at the LED life. According to the requirements of the US energy star LM-80, the LED light source needs to pass 6000H, respectively at 25 C/55 C/85 C/105 C. Standard. The higher requirement is that under the measured data of L80 (12000H), the light source life is greater than 50000h according to the data of the TM-21. The 5-year protection of Olant is also proposed based on the TM-21 50000h report that the third institution was tested and issued by this third institution. 2. The packaging materials with good packaging materials finally determine the product performance and effect. The three major packaging materials of the packaging are chips, substrates, and fluorescent powder; The things that affect the quality of the LED in the end. 3. In addition to paying attention to the product parameters, in addition to paying attention to the power/voltage/light effect of LED, we must also pay attention to LED's display CRI/non -visual red saturation R9/visual red saturation R16/color saturation RG/color reduction RF, etc. 4. Seeing color difference currently refer to ANSI and IEC. Usually the color difference between the LED is 3-7 Stepsdcm, but the color difference can only pick BIN shipments; Ourlangt products have realized a visual background color BIN batch production exchange goods. 5. Light color comfort light is not only lighting, it may affect human rhythm and health. Among them, LED's Blu -ray Summit will affect the secretion of melatonin and affect the quality of sleep; the light color of the visual reddish can make people feel more comfortable visually. That's it today. If you need LED, please contact our official customer service staff. Zhuhai City Co., Ltd., as the creator of the green lighting source, has 16 years of patch LED R & D and production experience, adhering to the concept of perfect quality, excellence, adopt high -end raw materials in the packaging process, strict control control procedures, and strengthen trust implementation. All aspects of simulation customers use conditions for experiments, and strive to make quality at the same price level. The company's main non -standard products have accumulated rich experience in glowing, high temperature resistance, long feet, anti -decaying, high finger, and mixed colors. The main products include infrared LED, ultraviolet LED and patch LED. We share the value with our customers. The LED has no color difference to the separation of our brand. It uses different wavelength chips to make the consistency of different batches of color. When all LED companies can only do the consistency of each batch of goods, we will reduce it. Good product rate, persist. With a good quality and integrity attitude, the brand sincerely serve mid -to -high -end customers, and quickly rises to become second -tier brands in the industry. Product performance has gradually been highly recognized by well -known domestic and foreign companies. The company further explores the domestic automotive electronics market, especially in automotive instruments, automotive audio, internal indicators and car lighting markets. In the future, the company will continue to develop the blue ocean strategy, invest more in the automotive electronics field, and strive to become early to become early to become the early becoming in the automotive electronics field. Brand supplier.

Author: Tianhui-Air Disinfection Author: Tianhui-UV Led manufacturers Author: Tianhui-UV water disinfection Author: Tianhui-UV LED Solution Author: Tianhui-UV Led diode Author: Tianhui-UV Led diodes manufacturers Author: Tianhui-UV Led module Author: Tianhui-UV LED Printing System Author: Tianhui-UV LED mosquito trap