5 Things Must Be Considered Before Purchase A Small Pixel Pitch LED Display
With the advances in LED display technology, point spacing is getting smaller and smaller. According to the industry consensus, the LED display with a point spacing below 2.5mm is the light-spaced LED display. It is understood that at present, the smallest spacing products have reached P1, but P2 – P2.5 products are more common. We usually choose small spaced LED displays, which we can consider in the following aspects:
1. Space problems
Even small spacing as P1.5 specifications of the products, to achieve full hd resolution (1920 x 1080), to reach 144 – inch screen size, it’s a quite a huge demand for space, does not contain the base width specification about 3.2 m by 1.8 m, up and down to find a can put down its walls is not an easy thing, is that still don’t have to consider the big guy multifarious installation work.
Because of the need to install more LED lights bead on unit area, small spacing LED display higher request to process, and to solve problems such as the circuit heat dissipation, also want to spend the cost of products more than large spacing, the yield is low, the current small spacing LED products price is still high, but with small spacing productivity growth of LED display, technical progress, the yield will be further promoted, will continue to lower prices.
Although LED lamp bead can live up to 100,000 hours, because of the high density, and the required thickness of the entry product is low, it is difficult to heat dissipation, prone to local failure. This makes it difficult to maintain and repair a small space screen with a larger size. However, many products have broken through this difficult problem, can realize the former maintenance.
4. Filling coefficient
The fill factor is also known as the bright area ratio, which is the ratio of the luminescent area of each pixel to the physical surface area of the pixel. LED displays are arranged in discrete pixels, and there is a distinct black area between pixels. When a closer look at the picture inconsistent incomplete, and uneven brightness produces particles that move if the light source is limited within the small pixel area, causing a single-pixel brightness is several times the whole screen brightness and even more than ten times, can cause a more serious sense of harsh. The “TCO” 99 standards in the flat-panel display industry is not expected to be less than 50%, and there are many leds on the market that do not meet this target. The cut-off characteristics of the TV’s low-pass filter also directly affect the proper shooting distance of the LED display with different filling coefficients.
The LED display with the same amount of spacing, the filling coefficient is smaller than the filling coefficient of the larger attenuation, so the shooting distance needs to be increased. If the system low passes filter passband is 4 MHZ, high-frequency attenuation characteristics of 12 db/octave, so, filling coefficient of 25% shooting distance is more than 50% of filling coefficient of attenuation 1.15 dB, shooting from the need to increase by about 10%. Filling coefficient increase, making display more broad perspective, melange effect is more ideal, to overcome the problem pixels of dazzling, and raise the whole screen brightness to the appropriate create conditions to have a better effect. Jiangsu education platform chooses the LED display with 60 percent filling coefficient. It has a moderate and soft brightness, uniform bright color and clear and exquisite expression, ensuring the high quality of the display screen.
5. Color temperature adjustment
ColorTemperature is the temperature that is determined by the shape of the emission spectrum of the emitter and the best fit of the black body. When the studio USES LED display screen as the background, its color temperature should be consistent with the lighting color temperature of the studio, so as to get accurate color reproduction in the shooting. The studio lights according to the program requirements, sometimes use 3200 k low color temperature of lamps and lanterns, sometimes use high 5600 k color temperature of lamps and lanterns, LED display, need to adjust to the corresponding color temperature, to obtain satisfactory results.