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]

Before the research of UV glue, UV ink, or other ultraviolet UV coatings, it was determined. The relevant characteristics of the ultraviolet UV glue, UV ink or other ultraviolet UV coatings, such as hardness, viscosity, the required ultraviolet wavelengths required , Fire intensity, etc. If you want to achieve the ideal ultraviolet curing effect, you must have a suitable UV ultraviolet curing machine. Everyone thinks that the factors that affect the solidification effect of the UVLED are mainly bands, strong light, and radiation time. In fact, this is not comprehensive. Tianhui, a manufacturer of UVLED curing machine manufacturers, will share with you two important factors that affect the UVLED curing effect, that is, the curing temperature and the illumination distance. Regarding the temperature of the UVLED curing machine: The cause of the cause in UV coatings may require a certain temperature to have better activity. If the temperature is not enough or the temperature is too high, it will have some impact on the activity. As for how much temperature is needed, it still has to be required. Look at the specific formula. Regarding the irradiation distance of UVLED curing machine: the irradiation distance will affect the intensity of the irradiation and the temperature of the irradiation, so that it will affect the curing effect. Because UVLED lamp beads also have divergent angles, whether it is UVLED face light source or UVLED wire light source or UVLED point light source, it is necessary to use it at a suitable distance. Especially the UVLED line light source and UVLED point light source with optical light, you should pay more attention to the illumination distance it uses. In addition, when using the UVLED curing machine, the following points need to be noted: 1. When the UVLED curing machine starts, the power cord is remembered to connect to the correct power supply. You need to turn off the power switch of the UVLED curing machine before power off. 2. When using UVLED curing machines for irradiation, if you use a drawer -type curing box, you need to wear professional UV protective glasses in the face of exposed light sources. Do not look directly at ultraviolet light sources naked. As a UVLED curing machine manufacturer with 13 years of industry experience, TIANHUI is committed to empowering all walks of life and realizing energy -saving and efficient production.

The UVLED point light source Tianhui technology development of Zhuhai discount pursues the business purpose of "winning the market with service, winning with quality, and winning customers with integrity", strives to create value for customers, creates markets for manufacturers, creates profits for agents, and is the vast number of vast number Customers who need light sources provide excellent UVLED dot light sources and satisfactory services. Use our sincerity to cooperate with you to seek faster, higher and better development. The company is positioned as close client enterprises. In the process of marketing, design and development, and company operations, the needs of customer groups that require light sources are guided to meet and strive to surpass the needs and expectations of customers. Customers provide differentiated products and services. 为确保产品能够安全快捷的送达到客户手上Tianhui科技发展采用的是陆运;水运;铁路运输的物流方式进行uvled点光源的配送运费卖家承担客户可通过银行转账;在线支付;当面交易Payment of payment. After the transaction is over, the development of Tianhui's technology also provides the date of receipt. Within three months, if the quality problem of the product itself, the replacement service can be replaced to ensure the needs of the customer group of the demand for light sources. After years of operation and development, the company has formed its own product marketing method. The UVLED dot light sources produced by produced are mainly wholesale; direct sales; wholesale and retail sales. Pay through bank transfer; online payment; face -to -face transactions and other methods, we will send the product to you within the day. The following articles are detailed, discount UVLED dot light sources, low -cost UVLED point light sources, and related information of UVLED point light source price quotes, please save the collection. Zhuhai TIANHUI Technology Development Co., Ltd. is located at 504 Donglongxing Building, Hualong Road, No. 504 Huarong Road, Dalang Street, Longhua New District, Zhuhai City. The professional manufacturer of the light source has an output value of about 10 million yuan per year. The company's technical strength is strong and the product quality is reliable. It is a limited liability company you trustworthy. Contact number 0755-28760662 UVLED point light source with reasonable price, low-cost UVLED point light sources, UVLED dot light sources, what is the price of UVLED point light sources?. Power: 100WUVLED Dot Light Source Brand: Tianhui Type: Line Light Source Production Address: Zhuhai Tianhui Technology Development Co., Ltd. Manufacturer: Zhuhai Tianhui Technology Development Co., Ltd. Usage: Inkjet printing, biology, medicine, police detection analysis light source, plant growth Lights, scientific research multi -band light sources, ultraviolet sterilization, LED photon medical, ultraviolet water treatment, vegetable treatment, air treatment, etc. are the main product line after -sales maintenance area: Baoan District, Zhuhai, Guangdong: Baoan District, Zhuhai, Guangdong Product Level: Advanced Price: Discussion Product Name: UVLED Point Light Source Freight: The seller shall be responsible for logging in to the website to learn more with the agent UVLED point light source, discount UVLED point light source, high -quality UVLED point light source, cheap UVLED point light source, UVLED point light source Brand related to price scope

The UVLED curing system has a long life than mercury lamps, but there is still a certain life span. The life of the UVLED curing machine and the materials of the equipment are related to the time use. We take the product of Zhuhai Zhuhai Tianhua Electronic Co., as an example to briefly talk about the maintenance of UVLED curing machines. 1> Ensure that the working environment is clean and tidy, the temperature and humidity adaptation are used to prevent the equipment from moisture and leakage. 2> Wipe off the surface dust on the surface to prevent the inside of the UVLED device. 3> Keep the equipment in the air and the smooth outlet, prevent the heat emissions during work, cause the equipment to be damaged. 4> Check the light source of the light source every day, and confirm whether the lamp beads are not glowing. Whether the light beads luminous color are abnormal. If there is the above situation, replace the lamp beads in time. 5> Regularly measure the light power metering of the light power meter is abnormal.