With the continuous expansion of the application scope and application field of full-color LED display, the quality of LED full-color display is also higher and higher. So for high-quality products, manufacturers need to achieve what kind of requirements, manufacturers for you to answer?
In order to make a high-quality LED display, the supporting products and materials need to be greatly improved. In the process of R & D and design, the application of heating, reasonable and advanced technology must also be included.
1、 Research and design ideas
1. Adhere to the use of mature and standardized technology
Mature advanced technology is adopted in LED technology; The design ensures that all devices are in derating state; Reasonable operation model is adopted in reliability, and complete standard is adopted in process; The rationality of the scheme index should be fully considered, and the meaningless high index should not be blindly pursued;
2. Using advanced technology
Using the most advanced HD video plug and play and signal processing system to ensure high fidelity video restoration.
Single point brightness correction technology is adopted, that is to control the pixel brightness by adjusting the current pulse width of each LED, so as to achieve the brightness consistency of the whole screen.
Single light chromaticity correction technology: make LED display screen show the true color of nature, realize the true restoration of color;
Eliminate brightness attenuation year by year: the maximum corrected white balance brightness of the display screen should be greater than the actual brightness. The manufacturer shall regularly calibrate the brightness point by point to ensure that the corrected brightness of the display screen is not lower than the actual brightness.
3. Reasonable
Reasonable operation model is adopted, parallel link is added, series link is reduced, hot standby technology and dual self-healing structure are adopted. Due to the cost and process feasibility of the display screen, it is impossible to use all parallel models
2、 Selection of reliable supporting products and materials
1. LED lights and chips.
The LED lamp is not only the LED light-emitting tube, but also the key device of the LED electronic display screen, so it is necessary to adopt the LED products with reliable quality and mature packaging. The selected LED products must meet the following requirements:
2. Box.
The whole structure is made of steel plate or aluminum, and the door opening structure is adopted. The top of the box adopts pin and the bottom adopts guide sleeve to ensure the accurate positioning between the boxes. The overall protection of the box meets the IP65 standard. In addition, the heat dissipation problem should be fully considered in the structure.
3. Switching power supply.
The display power supply adopts the famous brand switching power supply module which has passed the certification. All switching power supplies have passed the strict test, screening and aging. To ensure full compliance with international safety and quality certification requirements, in order to adapt to the long-term stable and reliable working requirements of the display screen. Under the rated working conditions, ensure the service life is more than 10 years.
4. Connector.
Connector is an important connecting device in the system. High quality connector products should be used to ensure the thickness of pure gold coating of connector and maintain the best electrical connection performance.
5. Circuit board.
The circuit board is made of flame retardant epoxy board with reasonable design and layout and standard wiring, which meets the requirements of electromagnetic compatibility and circuit stability. The manufacturer should choose the products produced by well-known manufacturers.
6. Driver chip IC device.
The driver circuit adopts the constant current driver chip of international famous brand. In a large temperature range, maintaining high precision constant current output and high reliability can significantly improve the uniformity and reliability of the display screen.
I believe that if we do the above, adhere to the reliable supporting facilities materials and professional R & D and design technology, we will certainly be able to reduce the failure rate of the display screen, and greatly improve the reliability and stability of the LED display screen.