FAQ

What is an LCD video wall?

Source: KONWHAI TOUCHAuthor: KONWHAI Date: 2020-06-23 Click:

  •      In our lives, large screen displays can be seen everywhere, and large splicing screen displays appear in stations, banks, hospitals, government departments, etc. Brought great convenience to people's lives. For example, in a train station, we can see the dynamic information of all trains from a far away, which is convenient for us to grasp the real-time dynamics of the train.
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  •      The LCD splicing screen can be used as a display alone, or it can be spliced ​​into a large screen. According to different usage requirements, it can realize variable and large variable screen functions: single-screen split display, single-screen single display, arbitrary combination display, full-screen LCD splicing, double splicing LCD screen splicing, vertical screen display, image frame Optional compensation or cover, support digital signal roaming, zooming and stretching, cross-screen display, picture-in-picture, 3D playback, various display plan settings and operation, full HD signal real-time processing.
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  •      So, how is the LCD spliced ​​display implemented?
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  • What is an LCD video wall?

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  •   The principle and characteristics of LCD splicing display: 
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  • 1. LCD splicing display concept:
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  •      The LCD liquid crystal display is the abbreviation of Liquid Crystal Display. The structure of the LCD is to place liquid crystals in two parallel glasses. There are many vertical and horizontal small wires between the two glasses. The rod-shaped crystal molecules are controlled by whether electricity is applied or not. Change the direction and refract the light to produce a picture. The LCD consists of two glass plates with a thickness of about 1 mm, which are separated by a uniform interval of 5 μm containing liquid crystal material. Because the liquid crystal material itself does not emit light, there are lamps as light sources on both sides of the display, and there is a backlight plate (or uniform light plate) and a reflective film on the back of the liquid crystal display. The backlight plate is composed of fluorescent substances Can emit light, its role is to provide a uniform background light source.
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  •      After passing through the first polarizing filter layer, the light emitted by the backlight board enters the liquid crystal layer containing thousands of liquid crystal droplets. The droplets in the liquid crystal layer are contained in a small cell structure, one or more cells constitute a pixel on the screen. There is a transparent electrode between the glass plate and the liquid crystal material. The electrode is divided into rows and columns. At the intersection of rows and columns, the optical rotation state of the liquid crystal is changed by changing the voltage. The function of the liquid crystal material is similar to a small light. valve. Around the liquid crystal material are the control circuit part and the drive circuit part. When the electrodes in the LCD generate an electric field, the liquid crystal molecules are twisted, so that the light passing through them is refracted regularly, and then filtered by the second filter layer is displayed on the screen.
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  • 2. Features of LCD splicing display:
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  •      LCD splicing (liquid crystal splicing) is a new splicing technology after DLP splicing and PDP splicing. The LCD splicing wall has low power consumption, light weight, long life (generally can work normally for 50,000 hours), no radiation, The advantages such as uniform brightness of the picture, but its biggest disadvantage is that it can not be seamlessly stitched. Since the LCD screen has a border when it leaves the factory, the border (seam) will appear when the LCD is spliced ​​together. For example, the border of a single 21-inch LCD screen is generally 6-10mm, and the joint between the two LCD screens has 12- 20mm.
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  •      In order to reduce the gap of LCD splicing, there are several methods in the industry at present, one is narrow slit splicing, and the other is micro slit splicing, which means that the manufacturer removes the shell of the LCD screen bought by the manufacturer and removes the glass Splicing between, this splice will damage the quality of the entire LCD screen. Soon after, Samsung launched a special LCD screen for splicing-the DID LCD screen. The DID LCD screen is designed for splicing, and its frame is made very small at the factory.
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  •      At present, the most common LCD sizes of LCD splicing walls are 19-inch, 20-inch, 40-inch, and 46-inch. It can be spliced ​​arbitrarily according to customer needs, up to 10X10 splicing, using backlight to emit light, and lifespan up to 50000 hours. Secondly, the dot pitch of the LCD is small, and the physical resolution can easily reach the high-definition standard. In addition, the LCD screen has low power consumption and low heat generation. The LCD screen of more than 40 inches has a power of only about 150W, only about 1/4 of the plasma , And stable operation and low maintenance costs.
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  •      Now the best LCD splicing screens on the market are Samsung LCD splicing screens, LG LCD splicing screens, LCD splicing screens, LCD splicing screens with high brightness and high reliability, using ultra-narrow-edge design, uniform brightness, stable image without flicker, and having Longer service life of LCD splicing screen, etc.
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