As the LED display industry price war has intensified, some manufacturers have chosen to reduce material costs in order to ensure the company's sales performance and profits, resulting in continuous decline in product quality.
Due to the lack of comprehensive LED display technology knowledge, consumers can only judge the quality of the display from the appearance and brightness, but they do not know the factors affecting the stability of the display, current, driver chip, IC temperature, lamp light decay, PCB The quality of the plates, especially the PCB plates, determines the effectiveness and longevity of the LED display.
At present, there are two forms of LED display PCB boards circulating in the market: single-panel and double-panel. Double-panel has always been the PCB board for mainstream application in the LED display market. A large number of practices have proved that the dual-panel can fully meet the requirements of LED display for PCB board because of its excellent performance, and can provide good quality assurance for LED display projects. .
However, the phenomenon of using single-sided PCB boards to produce LED displays has recently appeared on the market. Although it can save costs, it will bring more profits to manufacturers in the short term, but in the long run, this is not desirable. , why?
As early as the early development of LED display, people in the industry have already known the disadvantages of LED single-panel. A PCB board needs to be equipped with huge lines and components. If purely single-sided circuit design is adopted, then only the PCB line width can be reduced. A lot of winding, integrated chips, what is the result? Below we will focus on the advantages and disadvantages of P10 single panel and P10 dual panel through four aspects.
First, the P10 single-panel replaces the dual-panel 595 IC and the line-sweeping 4953 IC with an integrated chip. Although the cost is saved, the integrated chip's heat is beyond imagination, and it is easy to burn chips and burn boards. On the contrary, the P10 dual panel uses a conventional driver IC and a sweeping power IC (4953). The large current path is dispersed and the heat is dispersed. Therefore, the temperature is low and the chip burnout phenomenon is reduced.
Second, P10 single-sided routing, the space of individual areas is small, the line can only be about 5mil (0.127mm). If the full bright time is too long, a large current for a long time, it is easy to cause the temperature of the 5 mil thin wire to be too high, which is easy to peel off and carbonize with the copper clad laminate substrate, causing an open circuit, a short circuit, or even a burn.
Third, the P10 single-panel LED pin can only be tin on one side. It is easy to cause solder joint under long-term thermal expansion and contraction conditions, and the reliability is extremely low, resulting in malfunction. On the contrary, the P10 double panel has a through-hole lead, good heat dissipation, strong resistance to cold and heat, good adhesion, and reliable soldering of LED pins.
Fourth, the P10 single panel is made of wood pulp or cotton pulp fiber paper to make a composite substrate copper clad laminate. If it is used under harsh environmental conditions, it is easy to stratify and destroy circuit performance. On the contrary, the P10 double panel is made of fiberglass cloth, which has good toughness, low water absorption and strong coverage, ensuring product performance.
Through the above-mentioned comparative analysis, the P10 single panel does have serious hidden dangers, and it is easy to erupt in an irregular manner in subsequent operations, resulting in an incalculable accident. And the recent adverse effects of P10 single-panel in the market further confirm that the application of P10 single-panel in the LED display industry must be unstable and short-lived. The P10 dual-panel is the safety that meets the development needs of the LED display market. selected.
Due to the lack of comprehensive LED display technology knowledge, consumers can only judge the quality of the display from the appearance and brightness, but they do not know the factors affecting the stability of the display, current, driver chip, IC temperature, lamp light decay, PCB The quality of the plates, especially the PCB plates, determines the effectiveness and longevity of the LED display.
At present, there are two forms of LED display PCB boards circulating in the market: single-panel and double-panel. Double-panel has always been the PCB board for mainstream application in the LED display market. A large number of practices have proved that the dual-panel can fully meet the requirements of LED display for PCB board because of its excellent performance, and can provide good quality assurance for LED display projects. .
However, the phenomenon of using single-sided PCB boards to produce LED displays has recently appeared on the market. Although it can save costs, it will bring more profits to manufacturers in the short term, but in the long run, this is not desirable. , why?
As early as the early development of LED display, people in the industry have already known the disadvantages of LED single-panel. A PCB board needs to be equipped with huge lines and components. If purely single-sided circuit design is adopted, then only the PCB line width can be reduced. A lot of winding, integrated chips, what is the result? Below we will focus on the advantages and disadvantages of P10 single panel and P10 dual panel through four aspects.
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First, the P10 single-panel replaces the dual-panel 595 IC and the line-sweeping 4953 IC with an integrated chip. Although the cost is saved, the integrated chip's heat is beyond imagination, and it is easy to burn chips and burn boards. On the contrary, the P10 dual panel uses a conventional driver IC and a sweeping power IC (4953). The large current path is dispersed and the heat is dispersed. Therefore, the temperature is low and the chip burnout phenomenon is reduced.
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Second, P10 single-sided routing, the space of individual areas is small, the line can only be about 5mil (0.127mm). If the full bright time is too long, a large current for a long time, it is easy to cause the temperature of the 5 mil thin wire to be too high, which is easy to peel off and carbonize with the copper clad laminate substrate, causing an open circuit, a short circuit, or even a burn.
Third, the P10 single-panel LED pin can only be tin on one side. It is easy to cause solder joint under long-term thermal expansion and contraction conditions, and the reliability is extremely low, resulting in malfunction. On the contrary, the P10 double panel has a through-hole lead, good heat dissipation, strong resistance to cold and heat, good adhesion, and reliable soldering of LED pins.
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Fourth, the P10 single panel is made of wood pulp or cotton pulp fiber paper to make a composite substrate copper clad laminate. If it is used under harsh environmental conditions, it is easy to stratify and destroy circuit performance. On the contrary, the P10 double panel is made of fiberglass cloth, which has good toughness, low water absorption and strong coverage, ensuring product performance.
Through the above-mentioned comparative analysis, the P10 single panel does have serious hidden dangers, and it is easy to erupt in an irregular manner in subsequent operations, resulting in an incalculable accident. And the recent adverse effects of P10 single-panel in the market further confirm that the application of P10 single-panel in the LED display industry must be unstable and short-lived. The P10 dual-panel is the safety that meets the development needs of the LED display market. selected.
Guangzhou Etmy Technology Co., Ltd. , https://www.gzdigitaltalkie.com