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Large-screen splicing technology classification (three major splicing technologies)
1. Plasma Large Screen (PDP)
PDP Plasma Splicing It is a display technology using gas discharge. The detailed implementation process is:
First, a plasma tube is used as a light emitting element. Each plasma tube on the screen corresponds to one pixel, and the screen uses glass as a substrate.
Then, the distance between the substrates will form a discharge space. When the discharge space is filled with inert gas such as helium, neon, etc. as the working medium, metal oxide conductive films are coated on the inner surfaces of the two glass substrates for excitation. electrode.
When a voltage is applied to the electrode, a plasma discharge phenomenon occurs in the gas mixture in the discharge space, which is also called a plasma effect. The plasma discharge generates ultraviolet rays, and the ultraviolet ray excites a fluorescent screen coated with red, green and blue phosphors, and the fluorescent screen emits visible light to show an image.
2. Rear projection large screen stitching (DLP)
A projector is set inside the device, and the emitted image is projected to the back of the screen after being enlarged by the lens. This is the display principle of the rear projection. Specifically, DLP technology is to use DMD as the main key component to realize digital optical processing.
DLP is digital light processing and its working process:
A. The light source is sent to an integrator for homogenization and the light is divided into red, blue, and green by a three-coloured color circle.
B. The color is again mirrored on the DMD by the lens.
C. Finally, in the method of synchronizing signals, the digital rotating mirror's electric signal is used to convert continuous light to gray scale, and the color is displayed together with the three primary colors, and the final projection image is formed through the lens.
3. LCD large-screen splicing (LCD)
Although the LCD large-screen splicing technology started late, but as an emerging technology is currently the fastest growing, and its working principle is: 
LCD splicing is a splicing screen that adopts a liquid crystal display unit splicing method and a splicing control software system to realize a large-screen splicing display effect, and gradually develops into a mainstream technology by virtue of its own advantages. 
Three major splicing advantages and disadvantages
1. Plasma splicing technology advantages: high brightness, high contrast, bright colors.
Disadvantages: high heat and power consumption, burning phenomenon is more serious, there will be color differences between the splicing screen.
2. Rear projection splicing Advantages: Cheap low-end display solutions.
Disadvantages: The volume and weight are too large. In long working hours, the backlight is easy to age.
3. LCD splicing advantages: high resolution, thin thickness, light weight, long life, low energy consumption, no radiation.
Disadvantages: Failure to achieve ideal seamless splicing.
Looking at the large-screen splicing market, with the advancement of product technology, after a long period of development and promotion. Nowadays, the large-screen splicing market has been developing in a more diversified direction. It is deeply rooted in multiple application areas, and LCD splicing, as a rising star in the large-screen field, will also enter the climax of development and stage a large-screen splicing platform. As the finale is a good show, its huge development potential is favored by the masses.
After more than ten years of development, the large-screen splicing technology has made great progress in display technology, and the products have been continuously enriched in the application market. Provide users with more choices and better meet the needs of various occasions. In the field of large-screen splicing, in terms of splicing technology, it can be described as "Tiger's squat tigers." Various technologies have shown their skills, and they all want to compete for the supremacy. Next, professional LCD large-screen splicing company Youxin specializes in bringing you into the field of large-screen splicing to understand the classification of large-screen splicing technologies and their advantages and disadvantages.