LCD Video wall and LED

The lcd video wall and the led video wall are the two main screen display technologies, each of which has its own advantages and disadvantages, mainly because the lcd video wall is composed of lcd liquid crystal technology, and the led video wall is composed of lamp beads encapsulated by chip. This directly leads to their differences in display effect, clarity, application display function, application environment and so on. At the same time, in some fields, they also have some application overlap, such as conference, exhibition display and so on. Next, Weikang international technicians will analyze the advantages and disadvantages of lcd video wall and led video wall in detail according to many years of industry experience, and the difference in application.

I. Advantages and disadvantages of lcd video wall

1. advantages: high resolution, moderate brightness, high contrast, good stability, low after-sale rate, strong image processing function

The resolution of the LCD video wall is 1920/1080, and the four-screen splicing can reach 4 K resolution high-definition display. This is because its resolution supports superposition, so the image clarity of the splicing screen is very good, whether it is video or text information. The visual effect to the user is the best.

Brightness, splicing screen like home TV, that is, can show the content, while watching the screen for a long time will not be dazzling and other phenomena, the screen brightness is relatively mild.

Contrast refers to the contrast level of color, black and white, the higher the contrast, the richer the color, the contrast of conventional splicing screen can reach 5000:1.

LCD panel used in video wall is the most stable display panel at present. The conventional life can reach more than 80,000 hours. The overall performance is very stable without external force collision, so this greatly reduces the after-sale rate of the product.

The video wall is connected with matrix and other control devices through multi-screen splicing, which can realize the functions of multi-computer signal display at the same time, monitoring image in single screen maximum 64 image segmentation display and so on. At the same time, it also supports picture roaming, superposition and so on. The whole display function is stronger, users can adjust arbitrarily according to their own needs.

2. disadvantages: not waterproof, stitching

Because there is a tight electronic integrated circuit inside the video wall, it is afraid of water and moisture, which determines that it can only be installed in indoor dry occasions.

The conventional splicing screen has a few millimeters wide border, so there will be a physical stitching between the splicing screen and the screen. This stitching will affect the effect of the user to a certain extent and have a certain barrier to the image. However, this has been greatly improved by the introduction of mm seamless splicing screen technology.

2. Advantages and disadvantages of led video wall

1. advantages: seamless, indoor and outdoor

The Led video wall does not have the same stitching as the lcd video wall in the splicing place. After the whole large screen splicing is like a whole screen, there is no visual hindrance at all, and the effect is better when the whole screen is displayed, which is also its biggest advantage.

Meanwhile, the led video wall can reach the waterproof level, such as our common outdoor advertising screen, stadium broadcast screen, shopping mall and store screen, are used led video wall.

2. disadvantages: low resolution, high brightness in indoor application, frequent dead lights, high after-sale rate, weak decoding and split screen function

Since the resolution of the led screen is determined by the point spacing, and the minimum point spacing can only be about 1 mm, the resolution of even the minimum spacing led is still much lower than that of the lcd video wall. This directly leads to low definition of led screen, especially at close range.

The earliest, the led video wall is installed in the outdoor environment, and the outdoor environment because of the exposure to the sun, so the brightness of the whole led is very high, only in this way can clearly see the content on the screen. And when applied indoors, too high brightness becomes its defect, because the light in the indoor environment is not as good as outdoor, when the led screen is too high, the user will be extremely dazzling when watching the screen, although its brightness can be adjusted. But if the brightness is lowered, its gray level will also decrease, resulting in weak screen color performance.

A lot of lamp beads are attached to the unit board of the Led screen, but it will fall off. In installation or later use, it is very normal that the lamp beads fall or die. This to some extent affected the display effect, resulting in a higher after-sales rate.

In general, we see that most led video wall display a screen, because it does not display multiple screens in one screen as a lcd video wall, although the screen can also be displayed separately by adding a splicing controller. But compared with splicing screen, its decoding function and multi-signal synchronous display function are weaker.

According to the advantages and disadvantages of lcd video wall and led video wall, the difference between them in use is determined, such as some video surveillance display, conference room, exhibition hall and other close viewing occasions. The high resolution of lcd video wall is very suitable for high stability of panel. And some outdoor advertising and other occasions, it is better to use led.