Publisher: Supplier of LED Display Time: 2022-05-05 12:37 Views: 603
In recent years, the usage of led display screens has been increasing year by year, the styles are increasing, and the prices are also uneven. In fact, the gap in the appearance of the LED display is not enough to pull the price too much, so what are the factors that really affect the use of the LED display.
First of all, in the face of numerous led display screens in complex market conditions, it is necessary to choose a good brand of led display screen manufacturers. The led display is a new type of display equipment, and its products must meet certain safety standards to avoid potential safety hazards. Since the LED display has a long service life and is more expensive than the traditional display, it is also necessary to pay attention to the warranty period of the product, and try to choose a brand with a one-year warranty period to ensure that problems in subsequent use can be guaranteed in time.
Secondly, the attenuation of the luminous flux of the high-temperature LED display is irreversible, and the luminous flux before the irreversible light attenuation of the LED display does not occur, which is called the "initial luminous flux" of the LED display. The increase in temperature will reduce the luminous efficiency of the LED display. The reasons why the temperature affects the luminous efficiency of the LED display include the following aspects: the temperature rises, the concentration of electrons and holes will decrease, the band gap will decrease, and the electron mobility will decrease. . As the temperature increases, the probability of radiative recombination of electrons and holes in the potential well decreases, resulting in non-radiative recombination to generate heat, thereby reducing the internal quantum efficiency of the LED display. As the temperature increases, the blue light peak of the chip shifts to the long wave direction, which makes the emission wavelength of the chip and the excitation wavelength of the phosphor do not match, and also causes the external light extraction efficiency of the white LED display to decrease.
Finally, as an integrated electronic product, the LED display is mainly composed of a control board switching power supply light-emitting device equipped with electronic components, and the life and stability of all these components are closely related to the operating temperature. If the actual working temperature exceeds the specified use range of the product, not only its life will be shortened, but the product itself will also be seriously damaged.
The above are the factors that affect the use of led display screens introduced by the editor of LCF