The key factors to improve the quality of LED display screens are high-quality raw material selection, fine manufacturing processes, strict quality inspection processes, efficient heat dissipation design, stable power supply, optimized welding processes, intelligent control systems, and waterproof and dustproof measures.
And complete after-sales service ensures that the display screen achieves excellent performance in terms of brightness, stability, lifespan, etc.
Antistatic ability
When assembling LED displays, good anti-static measures should be taken. Because LEDs are driven by low voltage, they are sensitive to high voltage and anti-static capabilities.
Special anti-static ground, anti-static floor, anti-static soldering iron, anti-static table mat, anti-static ring, anti-static clothing, etc. are all basic requirements, and they also need to be tested regularly with an electrostatic meter.
Brightness and wavelength
LED luminous efficiency determines the value of LED. LEDs with larger chip sizes emit higher brightness and better quality. At the same time, the display screen has strict requirements on the wavelength of the LED light, and a display screen with the same wavelength will display better results.
Leakage current
LED is a unidirectional light-emitting conductor. When designing a circuit board, the requirements for the reverse current of the circuit board are very strict. The presence of reverse current will shorten the life of the LED.
Illumination angle and consistency
The LED lighting angle directly affects the brightness and consistency of the display screen. Consistency means that the colors displayed should remain consistent from any angle the display is viewed from.
LED life
LED life is determined by the LED chip, LED bracket, LED gold wire and LED packaging structure. The key is the degree of attenuation of the LED under working conditions. The faster the attenuation, the shorter the life.
LED chip
There are various brands of LED chips on the market, and chips of different brands have differences in stability, brightness, and lifespan. Choosing high-quality chips is the key to improving the quality of the display.
Chip size
Chip size also has an important impact on the quality of LED displays. Generally speaking, the larger the size, the better the performance.
Epoxy resin colloid
After LED is packaged, it becomes a finished product. Epoxy resin colloid is used as the packaging material, and its quality also affects the quality of the LED display. The quality of colloids with UV resistance and fire retardant properties is better.
White balance effect
White balance effect is one of the important indicators of LED display. When the ratio of the three primary colors of red, green and blue is 1:4.6:0.16, pure white will be displayed. The quality of white balance is mainly determined by the control system of the display screen, and is also affected by the color reproduction of the die.
Mosaic and dead center phenomenon
Mosaics and dead spots are common problems that affect the quality of LED displays. Mosaic is mainly caused by the quality of the connector or damage to the lamp beads during installation, while the dead spots are mainly determined by the quality of the tube core.
Flatness
The surface flatness of the LED display screen must be within ±1mm to ensure that the displayed image is not distorted. The flatness is mainly determined by the production process, and careful operation is also required during the installation process.
Brightness and viewing angle
The brightness of the LED display needs to be reasonably selected according to the use environment. The brightness of the indoor full-color screen should be above 800cd/m², and the brightness of the outdoor full-color screen should be above 1500 cd/m². The larger the viewing angle, the greater the audience for the display.
Color block phenomenon
The color block phenomenon is mainly caused by poor LED screen control system, low gray scale, and low scanning frequency. Therefore, the control system should choose good quality brand products.
Envirnmental factor
The working environment is an important factor affecting the life of the LED display. There is a big difference between indoor and outdoor environments, and harsh environments will aggravate the aging of the display.
Peripheral raw materials
In addition to LED light-emitting devices, the display screen also uses many other peripheral components, such as circuit boards, plastic casings, switching power supplies, etc. Problems with any component may reduce the life of the display.
Production Process
The production process is also a key factor in determining the life of the display screen, including component storage and pretreatment process, furnace welding process, three-proof treatment process, waterproof sealing process, etc.
Driver circuit layout and wiring design
The layout and wiring design of the drive circuit will affect the brightness of the LED. Optimizing the layout and wiring design can ensure the consistency of the brightness of the LED display.
Waterproof requirements
The environments in which LED displays are located are different, and the waterproofing requirements are also different. Outdoor waterproofing requirements are high, generally IP65 or above.
The above are the key factors affecting the quality of LED display screens. By strictly controlling these links, the quality of LED displays can be significantly improved.
Thermal design
The LED display screen will generate a lot of heat during its working process. If the heat dissipation is poor, the temperature of the LED lamp beads will increase, which will affect its brightness, stability and lifespan. Therefore, reasonable heat dissipation design is one of the important factors to improve the quality of LED display. The heat dissipation design can include a variety of heat dissipation technologies such as heat sinks, fans, and heat pipes to ensure that the display can work normally in high-temperature environments.
Power Stability
The stability of the power supply also has an important impact on the quality of the LED display. An unstable power supply can cause uneven brightness, flickering, or even damage to the display. Therefore, choosing high-quality power products and ensuring the stability of the power supply is the key to improving the quality of LED displays.
Welding process
In the manufacturing process of LED display screen, welding is an important link. The quality of the welding process directly affects the quality and life of the display screen. Optimizing the welding process and ensuring the firmness and stability of the solder joints is crucial to improving the quality of LED displays.
Quality inspection process
Strict quality inspection process is the last line of defense to ensure the quality of LED displays. During the production process, strict testing procedures and inspection standards should be established to conduct comprehensive testing and quality control of LED displays. This includes functional testing, brightness uniformity testing, temperature testing, and more to ensure each product meets specifications.
Raw material selection
Choosing high-quality raw materials is the basis for improving the quality of LED displays. This includes LED chips, driver chips, power modules, PCB boards and other related materials and devices. Choosing raw materials with good brand reputation and guaranteed quality can ensure the stability and life of the display screen.
Intelligent control
With the development of science and technology, intelligent control has become an important means to improve the quality of LED displays. By introducing an intelligent control system, functions such as remote monitoring, fault diagnosis and automatic adjustment of the display can be realized, further improving the stability and reliability of the display.
Waterproof and dustproof design
For LED displays used outdoors, waterproof and dustproof design is essential. By using waterproof and dustproof materials and structural design, the display can be ensured to work properly in harsh environments and extend its service life.
Regular maintenance and upkeep
LED displays also require regular maintenance and upkeep after being used for a period of time. This includes cleaning dust, checking connection lines, waterproofing, etc. Regular maintenance can extend the service life of the display while maintaining its stable and reliable working condition.
After-sales service
High-quality after-sales service is an important guarantee for improving the quality of LED displays. A complete after-sales service system can promptly solve problems encountered by customers during use and ensure the stable operation of the display.
In short, improving the quality of LED displays requires starting from many aspects, including heat dissipation design, power supply stability, welding process, quality inspection process, raw material selection, intelligent control, waterproof and dustproof design, and regular maintenance and upkeep. Only by comprehensively considering these factors can the stability and reliability of the LED display be ensured and meet the needs of users.