Comparison of LED, LCD and DLP large-screen display curtain walls

In recent years, with the gradual maturity of small-pitch LED display technology and market, its application in the field of indoor large-screen splicing has become more and more common. Especially with the rapid development of smart cities and the security industry, the demand for indoor large screens in various cities is increasing, and small-pitch LED products have also become popular all the way. Although the current price of small-pitch products is relatively high, mainly concentrated in the mid-to-high-end market, under the rapid growth momentum of small-pitch and the trend of gradual price decline, it still brings a lot of pressure to traditional indoor large-screen splicing products LCD and DLP. . What are the characteristics of small-pitch LED, LCD, and DLP products?

Small pitch LED screen

The small-pitch LED display is very eye-catching in terms of display performance. Due to the fundamental difference in light-emitting principle and structure, small-pitch LED products can not only achieve seamless splicing, but also have a very wide color gamut and excellent color performance, which are not comparable to DLP and LCD, and have a fast response speed. Problems such as ghosting and smearing are almost a rewrite of the previous large indoor screens.

DLP splicing screen

DLP is stable. In terms of splicing gaps and mirror reflections, it is better than LCD, but it cannot be compared with small spacing; in terms of resolution and heat generation, it is not as good as liquid crystal display, but it is also better than small spacing. In general, the overall performance of DLP is “moderate”, except for the bottom of the brightness, the basic performance is good.

LCD splicing screen

The advantages and disadvantages of LCD are also more obvious. The biggest disadvantage is that the splicing gap is too large. Even the 1.8 mm splicing seam is within the range visible to the naked eye, which affects the overall visual performance. Secondly, the picture is greatly affected by external light, and the problem of easy reflection needs to be solved. However, it still has great advantages in terms of resolution, heat generation, maintenance, etc., and indoor display does not require high brightness, coupled with low price and low maintenance cost, LCD still has obvious advantages in indoor display, becoming the The mainstay in the large screen splicing market.

In the past two years, small-pitch LED display products have been very popular in the high-end large-screen field. Whether it is displayed at various summits, conference sites, or in large command centers, they are the first choice. They have even begun to enter the cinema as a film. screen exists. These are undoubtedly based on the display effects such as good picture integrity and strong color expression of small-pitch products, but before we rejoice, we still need to focus on the application of small-pitch LED displays in indoor applications, the same obvious defects. .

1. Brightness

It is almost unaffected by external light such as sunlight and lights, making the LED display the overlord in the outdoor field, but when such a feature is placed indoors, it will face the embarrassment of excessive brightness. Especially in the field of security monitoring, staff need to face the screen for a long time, and excessive brightness is not a good visual experience.

2. Stability

For traditional LED displays, the dead light rate is generally controlled below 1/10,000, but for high-density small-pitch screens, the probability of 1/10,000 obviously cannot meet the needs of the screen, and a lower dead light rate becomes inevitable. Requirements, coupled with more applications of small spacing in high-end fields, the quality requirements are even more stringent.

3. Cost

The purchase cost of the small pitch itself is higher than that of the LCD, and the heat dissipation cost and electricity cost of the LED display are higher than those of the LCD and DLP. There is even greater resistance to entering the mid-to-low-end market with huge demand.