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Plasma large screen splicing system PDP (Plasma Display Panel), the plasma display. The PDP is a display technology that utilizes gas discharge. Its working principle is very similar to that of a fluorescent lamp. It uses a plasma tube as a light-emitting element. Each plasma tube on the screen corresponds to a pixel. The screen uses glass as a substrate, and the substrates are spaced a certain distance to form a discharge space. The discharge space is filled with inert gas such as helium, neon and the like as a working medium. On the inner surfaces of the two glass substrates, a metal oxide conductive film is coated as an 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.
PDP unit splicing has the advantages of bright colors, high contrast and high brightness, but also has its own insurmountable disadvantages. Because plasma consumes a lot of power and heat, it can cause serious burns and is not suitable for long-term static screen display monitoring. And after the PDP unit is used for splicing, the temperature of the whole machine is higher, so that the device is easily burned. In addition, plasma splicing curtain wall prices are currently higher in the market, and the price of one square meter is generally more than 100,000. Today, low-carbon and energy-saving have become the mainstream trend. For most ordinary users, plasma splicing is obviously not the best choice.
Despite its many shortcomings, the bright plasma and high-brightness features make it possible to display images with outstanding advantages, making plasma splicing the darling of some exhibitions. In addition, the government agencies that require higher picture quality are also preferred. However, from the perspective of the overall market share, plasma splicing is at a complete disadvantage, and the development potential of the entire industry is limited by the potential for plasma splicing. According to some industry analysts, the industry is currently a “chicken industry†and it will certainly be replaced in the future.
LCD splicing
The so-called LCD LCD large-screen splicing is a splicing screen body that adopts the LCD display unit splicing method and achieves a large-screen display effect through a splicing control software system. LCD LCD splicing is currently represented by South Korea's Samsung DID. Although there are SHARP, LG, NEC and other brands in the splicing market, DID is unique in LCD panel splicing technology with its excellent price/performance ratio.
LCD splicing has the advantages of thin thickness, light weight, low energy consumption, long life, no radiation, etc., and its exquisite picture, high resolution, excellent performance of various key performance indicators, it has made it the mainstream of development, the prospect is good. As a spliced ​​display terminal, LCD has the above advantages, but as a splicing display unit, its disadvantages are also fatal: that is, its spelling is taught at present, and it is the largest among the three splicing display units, so many users have to reluctantly give up.
DLP splicing system
DLP is an abbreviation for "Digital Lighting Progress". It means digital light processing, which means that this technique involves first digitally processing the image signal and then projecting the light. Specifically, DLP projection technology is the application of a digital micromirror chip (DMD) as the main key component to achieve digital optical processing. The principle is that the light source is homogenized by an Integrator (Integrator). The light is divided into R, G, and B colors by a color wheel with three primary colors, and the color is then imaged by the lens. DMD. 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 expressed in three colors: R, G, and B. Finally, the image is projected through the lens.
DLP large-screen splicing system is based on DLP projectors and is equipped with a high-brightness, high-resolution color realistic video wall composed of image processors. It can display various computer, network signal and video signals. The screen can roam freely and open windows. , zoom in and out. In addition, compared with other splicing techniques, the outstanding advantage of DLP splicing is “zero gapâ€, and the physical gap screen has a good overall display effect. Moreover, the DLP splicing system has lower requirements for the environment, thereby reducing operating costs.
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