Small pitch LED The purpose of the display is to achieve high definition and enter the home appliance industry. Today's LED displays are used as municipal and commercial media. If you enter the home appliance industry, the market will develop into a monopoly technology. It is undoubtedly a revolution in display screens to make LED displays the home appliances that every household needs.
With the continuous improvement of LED display technology, small-pitch LED displays are becoming more and more perfect. After the industry's precipitation, below p2.5 are called small-pitch LED display . According to the data, the smallest gap is currently p1.5 , and the models include p2 , p1.9 and so on. We should consider the following issues when choosing a small spacing.
Even for products with a size of 1.5 or less, to achieve full HD resolution (1920×1080) , the screen size will reach 144 inches, which is very large, which does not include the size of the base. It is not easy to find a wall that can put it down, and it does not include the space for construction.
In terms of price, LED lamp beads have smaller pitches, and we install LED lamp beads more densely. The requirements for small-pitch LED display are very high, and the heat dissipation, circuit or power supply is compared with other LED displays . High, and at present, the technology of small-pitch LED display is still in the development stage, not very sophisticated, resulting in the price of small-pitch LED display is abnormally expensive, but with the technology of small-pitch LED display The more sophisticated, the higher the production capacity, our price will also drop, just like the mobile phone of the year, when it came out, the price is very expensive, but when the mobile phone floods the market, it is so worthless.
From the maintenance point of view, although the life of the LED display is very long, but because there are many lamp beads, and the indoor thickness is not high outside, the heat dissipation effect is not very good, and it is prone to failure. This is relatively difficult to maintain for the p2.5 small-pitch LED display , but there is already a well-established technology to maintain the LED display . Pay attention to small-pitch purchases and applications:
　　 The proportion of the bright area of ​​the LED display is the ratio of each pixel of the illuminated surface to the pixels of the entire LED display . LED display screens are arranged by discrete pixels, and there is a constant difference between pixels and pixels. Some distances are not very good to see the visual effect, and uneven brightness will have granular things. If the light source is in a small pixel, the brightness index of one pixel will be very high, which will result in a strong The visual impact. The flat LED display is recognized by the industry as the TCO'99 standard. The LED light can't be lower than 50% , but now many LED displays on the market cannot meet the requirements. The cut-off characteristics of the low-pass filter of the TV also directly affect the appropriate shooting distance of the LED display with different fill coefficients . The fill factor is much smaller than the fill factor, so the photograph is far away. If the system low-pass filtering passband is 4MHz and the high-frequency attenuation characteristic is 12db/ octave, then the shooting distance of 25% of the fill factor is 1.15db more than the fill factor of 50% , and the shooting distance needs to increase by about 10% . The improvement of the filling factor is an ideal place for LED display applications to be wider and more chromatic aberrations. It perfectly solves the problem of glare, and the conditions for creating LED displays are getting better and better.
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