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At present, there are three kinds of large-scale screen splicing walls: DLP rear projection, plasma display, liquid crystal display. After years of development, liquid crystal display technology has occupied an important position in the field of flat panel splicing display. It is enough to show that it has a unique advantage, so what are its advantages? In order to better explain, the following author will be the same scale of the three display methods of the basic performance indicators for a comparison.
| Performance index | Liquid crystal | DLP rear projection | plasma |
|---|---|---|---|
| luminance | 500-800 lumen | 300-500 lumen | 600-1000 lumen |
| Contrast | 1000:1-1500:1 | 300:1-500:1 | 3000:1 |
It can be seen from here that the brightness and contrast of the liquid crystal have advantages over the rear projection, but it is still slightly worse than the plasma.
| Color saturation | 92% (DID screen) | lower | 93% |
The higher the color saturation, the brighter the image will appear. In this comparison we can see that there is almost no difference between liquid crystal and plasma in terms of color saturation, while the rear projection is relatively poor.
| Resolution | 1366*768（46 inch） | 1024*768（42 inch） | 852*480（42 inch） |
The resolution determines the clarity of the picture. In this comparison, the LCD completely wins, compared to DLP, plasma is much more.
| Power dissipation | 200w（46 inch） | 300-500w（50 inch） | 500w（42 inch） |
Power consumption is often a non-negligible indicator, which determines the operating costs of customers. The power consumption of liquid crystal is the smallest of the three display modes.
| Life span | 50000h（backlight） | 5000-10000h（bulb） | 5000-10000h（screen） |
The life of the display is not a factor that customers must consider, but it is a factor that must not be considered. The life of the liquid crystal is significantly higher than the other two display methods, and the life of the plasma liquid crystal and the rear projection is only related to the light part, and the backlight tube can be replaced or the lamp bubble can be replaced after the expiration of use. However, the life of the plasma is related to the screen, and it can only be scrapped after the expiration of use and cannot be repaired.
| burn | non-burn | It rarely burns | Burn badly |
Burns occur when a still image remains in one position for a long time, leaving a shadow on the screen. The display principle of liquid crystal and projection determines that the screen will not burn, but the plasma burn phenomenon is more serious. Although major manufacturers have now improved the technology to minimize this phenomenon, the non-burn of plasma still has a great advantage.
| volume | frivolous | larger | frivolous |
The size of the volume determines the flexibility of the installation, the thinner the volume, the easier it is to install, and the more ways. Liquid crystals and plasmas have an advantage in this regard
| splice | have | lesser | lesser |
The backlight part of the LCD leads to a certain gap in the LCD splicing on the side of the screen, but after the use of LED backlight, the LCD splicing is comparable to the rear projection and plasma.
Through the above comparison, we can see that compared with other splicing methods, liquid crystal splicing has the advantages of high color saturation, high resolution, low power consumption, long life, no burning, thin volume and so on. It completely surpasses other traditional display methods. The only shortcoming is that it has a certain gap in the splicing part, but this gap has become smaller and smaller with the continuous progress of technology. It is believed that in the near future, LCD splicing will occupy an increasingly important position in the field of large screen display.