LED electronic display screens are widely used in our lives. Maybe everyone has a simple understanding of LED electronic display screens, but do they really have a deeper understanding? Today, Fly-LED LTD (www.fly-display.com) carries out conceptual clarification and discussion on several common misunderstandings of led electronic displays.
1. LED electronic display software is not free: currently only a few companies have genuine software. It is illegal to use piracy now.
2. Point-by-point correction does not need to use a dedicated driver chip: as long as the control system supports it, the general-purpose driver chip can also achieve point-by-point correction!
3. Chromaticity correction is not equal to chromaticity uniformity correction. The application of chromaticity correction is more the conversion of color gamut space. Under normal circumstances, after the brightness correction, the brightness uniformity of the display can reach a very high level, plus the color gamut space correction, the color fidelity of the display can also reach a very high level, let’s introduce it below. Chromaticity correction and chromaticity uniformity correction:
1. Chromaticity correction: to meet the special requirements of customers for the display color gamut space: the color gamut space of the display screen is corrected to the color space specified by the customer. Improve the color fidelity of the display screen and make the color reproduction more realistic: Correct the color gamut space of the display screen to standard color spaces such as SRGB and NTSC.
2. Chromaticity uniformity correction: due to the good separation accuracy and stability of the color separation machine, coupled with the effective process of mixing lights and crystals, the application of chromaticity uniformity correction is quite limited, and it must be cleared when inventory is cleaned. It is necessary to mix a very small amount of lamps with scattered wavelengths on one screen. At this time, chromaticity uniformity correction is also the only option. Due to errors in the production process, lights/chips of different wavelengths were mixed together and used on the same screen. Chromaticity uniformity correction can be used as the last remedy.
4. Point-by-point calibration is not done by the control system manufacturer, and the calibration technology is not bundled with the control system. The real necessary conditions for point-by-point calibration are:
1. A control system capable of realizing point-by-point correction.
2. High-precision and high-efficiency lamp point brightness collection equipment. Summary: Point-by-point drive control has long been realized, and the general control systems on the market already have this function. But for the collection of millions of light points, some control system manufacturers have developed various tools, and these collection methods are not compatible with other systems. As a result, the point-by-point correction and the control system are tied together, and the misunderstanding of integration is caused.
Five, the gray level of LED electronic display screen: as a dual-color and full-color display gray scale is an important indicator. At present, the market is flooded with many 16-level and 64-level grayscale display screens posing as 256-level grayscale. Its control cost is only 1/5 of that of 256-level gray scale control. The easiest way is to play a VCD with a fierce sports scene to see if it can be seen clearly on the led electronic display.
