How do users choose a small pitch full color LED display?
With the full color LED display technology advances, point spacing is becoming smaller and smaller. Small pitch LED products have become a well-deserved star products, the market is rapidly expanding its market range, according to industry consensus, the point spacing of 2.5mm below the full color LED display is a small pitch LED display. Usually choose a small pitch full color LED display, you can consider from the following aspects:
In the small pitch full color LED display selection and use of the process to pay attention to the following aspects:
1, fill factor to be high
Full-color LED display fill factor (FillFactor), also known as the bright area ratio, that is, the luminous area of each pixel and the pixel occupied by the physical surface area ratio. Full color LED display is arranged by the discrete pixels, there is a clear light between the black area. When the close-up view, the screen is not coherent incomplete, and uneven brightness produce grainy, if the light source is limited to a small pixel surface area, resulting in a single pixel brightness is the brightness of the whole screen several times or even ten times, Causing a more serious sense of thorny. Flat panel display industry recognized TCO'99 standard requirements, the fill factor should not be less than 50%, the current market, many full-color LED display fill factor did not meet this target. The cut-off characteristics of the TV's low-pass filter also directly affect the appropriate shooting distance of the full-color LED display with different fill factors.
The same point spacing of full-color LED display, fill a small coefficient than the filling factor of the attenuation of more, so the shooting distance needs to increase. If the system low pass filter passband is 4MHz, high frequency attenuation characteristics of 12db / octave, then the filling factor of 25% of the shooting distance than the fill factor of 50% more attenuation 1.15db, shooting distance need to increase about 10%. Fill the coefficient of improvement, making full-color LED display perspective more broad, color mixing effect is more ideal, to overcome the pixel glare, but also for the appropriate increase in the brightness of the entire screen to achieve better results to create the conditions.
2, color temperature can be adjusted
Color Temperature (TemperatureTemperature) is the emitter emission spectrum shape and the best fit of the blackbody emission spectrum shape to determine the temperature. The studio uses a full color LED display as the background, the color temperature should be consistent with the studio light color temperature, in order to get accurate color reproduction in the shooting. Studio lighting according to program needs, sometimes use 3200K low color temperature lamps, sometimes use 5600K high color temperature lamps, LED display will need to adjust to the corresponding color temperature, so as to obtain a satisfactory shooting.
3, shooting distance to be appropriate
As mentioned in front of the point spacing and fill the coefficient mentioned, different point spacing, different fill factor full color LED display, the appropriate shooting distance is not the same. The distance between the characters and the screen in the 4-10 meters more appropriate, so when shooting people can get a better background picture. If the characters from the screen too close, shooting close-range, the background will appear grainy, but also prone to moire interference.
4, to ensure a good use of the environment
Products in the life of only under the appropriate working conditions, the failure rate is low. Full color LED display as an integrated electronic products, it is mainly equipped with electronic components of the control panel, switching power supply, light-emitting devices and other components, and all of these components of the life and stability are closely related with the working temperature. If the actual operating temperature exceeds the scope of use of the product, not only its life will be shortened, the product itself will be seriously damaged. In addition, the threat of dust can not be ignored. In the relatively large dust environment, due to PCB adsorption of dust, and dust deposition will affect the electronic components of the heat, will lead to component temperature rise, and then the thermal stability of the decline or even leakage, serious will lead to burn. Dust will absorb moisture, thus corrosion of electronic circuits, resulting in some difficult to troubleshoot short circuit problems. Pay attention to keeping the studio clean.