What problems should be considered in purchasing led small spacing display screen?
Jul 20, 2021
Today's LED displays are used for municipal and commercial media. If it enters the household appliance industry, it will develop into a monopoly technology in the market. It is a revolution of LED display screen to make LED display screen a household appliance that every household needs. With the continuous improvement of LED display technology, small spacing LED display is more and more perfect. After the precipitation of the industry, p2.5 below are called small spacing LED display. According to the data, at present, P1.5 is the smallest with small spacing, and other models include P2, p1.9, etc.
Even for P1.5 or smaller products, to achieve full HD resolution (1920 × The screen size will also reach 144 inches, which requires a lot of space. This does not include the size of the base. It is difficult to find a wall that can put it down. This also does not include the space for construction.
In terms of price, due to the smaller spacing of LED beads, the LED beads we installed are more dense. The requirements for small spacing LED displays are very high, and the heat dissipation, circuit or power supply are relatively high compared with other LED displays. Moreover, at present, the technology of fine pixel pitch LED displays is still in the development stage, which is not very proficient, As a result, the price of fine pixel pitch LED display screen is abnormally expensive. However, as the technology of small spacing LED display screen becomes more and more sophisticated and the production capacity becomes higher and higher, our price will also drop. Just like the mobile phone in those years, when it first came out, the price was very expensive, but when the mobile phone flooded the market, it was so worthless.
In terms of maintenance, although the life of LED display is very long, due to the more beads and the thickness required in the room is not high outdoor, the heat dissipation effect is not very good, and it is easy to fail. So it is relatively difficult to maintain the small space LED display screen, but there are perfect technologies, which are used to maintain LED display screen before. In the purchase and application of small spacing, attention should be paid to:
The proportion of light area of LED display screen is the proportion of each pixel on the light-emitting surface to the pixels of the whole LED display screen. LED display screen is composed of discrete pixels, and there are constant differences between pixels. Some close to watch the visual effect is not very good, and uneven brightness will have granular things, if the light source in a small pixel, will make a pixel brightness index is very high, it will cause a strong visual impact. Flat LED display is the industry recognized TCO'99 standard, LED lights should not be less than 50%, but now many LED displays in the market can not meet the requirements.
The cut-off characteristics of TV low-pass filter also directly affect the appropriate shooting distance of LED display with different filling factors. The attenuation of small filling coefficient is more than that of large filling coefficient, so the photographing distance is far away. If the low-pass filter passband of the system is 4MHz and the attenuation characteristic of high frequency is 12dB / octave, the shooting distance with 25% fill factor will be 1.15db more than that with 50% fill factor, and the shooting distance needs to be increased by about 10%. The improvement of fill factor is the application of LED display more widely and the color difference is more ideal, which perfectly solves the glare problem, and now the LED display creates better and better conditions.
