In recent years, led display in the TV studio and television broadcast of the large-scale activities are increasingly being used as a stage background, it provides a variety of vivid, dazzling background screen and more interactive features, so that the background screen Also move and quiet, so that the performance and background integration, people have immersive feeling, the perfect scene and the atmosphere of the program together to achieve the other stage art equipment is difficult to achieve the function and effect.
At present, the domestic television studio using the led display point spacing of more than 4-6 mm, usually selected models are P4 or P6. In order to achieve excellent results, we must carefully study the signal source resolution and the relationship between the point spacing, and strive to achieve the same resolution, to point to point display, in order to achieve the best results.
The fill factor is 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. led display is arranged by the discrete pixels, there is no obvious between the pixels of the black area. When the distance is viewed, the screen is not coherent and incomplete, and the brightness is uneven. If the light source is confined to a small pixel surface area, the brightness of a single pixel is several times or more than ten times the brightness of the whole screen. 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 of the LED display fill factor does not meet this target. TV's low-pass filter cut-off feature also directly affects the filling factor of the different led display of the appropriate shooting distance. The same point of the distance between the led display, fill a small coefficient than the fill 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% shooting distance than the fill factor of 50% more than 1.15db, shooting distance need to increase about 10% The The increase in the fill factor makes the viewing angle of the display wider, the blending effect is more ideal, overcoming the glare of the pixels, and creating the conditions for improving the brightness of the entire screen to achieve better results.
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. Studio use 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, outdoor led display will need to adjust to the corresponding color temperature, in order to obtain a satisfactory shooting effect.
Shooting distance to be appropriate
As mentioned in front of the point spacing and fill the coefficient mentioned, different point spacing, different fill factor 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.
To ensure a good use of the environment
Products in the life of only under the appropriate working conditions, the failure rate was low. 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 dust of the relatively large environment, because the PCB adsorption 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. Studio transformation will produce a lot of dust, need to be done in advance of the indoor LED display.