Basic knowledge of LCD LCD splicing screen

- Oct 25, 2018 -

Basic knowledge of LCD LCD splicing screen

LCD liquid crystal splicing screen is the abbreviation of LiquidCrystalDisplay. The LCD is constructed by placing liquid crystals in two parallel glass. There are many vertical and horizontal small wires between the two glass, and the rod crystal molecules are controlled by energization or not. Direction, refracting light to produce a picture. The LCD consists of two glass plates, approximately one millimeter thick, separated by a uniform spacing of five microns containing liquid crystal material. Because the liquid crystal material itself does not emit light, a light tube as a light source is provided on both sides of the display screen, and a backlight plate and a reflective film are arranged on the back of the liquid crystal display screen, and the backlight plate is composed of a fluorescent substance to emit light, and the function thereof Mainly to provide a uniform background light source.

The light emitted by the backlight enters the liquid crystal layer containing thousands of liquid crystal droplets after passing through the first polarizing filter layer. The droplets in the liquid crystal layer are all contained in a small cell structure, and one or more cells constitute one pixel on the screen. Between the glass plate and the liquid crystal material is a transparent electrode, the electrode is divided into rows and columns, at the intersection of the rows and columns, by changing the voltage to change the optical rotation state of the liquid crystal, the liquid crystal material acts like a small light valve. Around the liquid crystal material are a control circuit portion and a drive circuit portion. When the electrodes in the LCD generate an electric field, the liquid crystal molecules are distorted, and the light passing through them is regularly refracted, and then filtered through the second layer of the filter layer to be displayed on the screen.

LCD splicing (liquid crystal splicing) is a new splicing technology that has emerged in recent years after DLP splicing and PDP splicing. LCD splicing screen has the advantages of low power consumption, light weight, long life, no radiation, and uniform brightness. However, its biggest drawback is that it can't be seamlessly spliced, which is a bit of a pity for industry users who need very fine display screens. Since the LCD screen will have a frame when it leaves the factory, the LCD will have a frame when it is spliced together. For example, the frame of a single 21-inch LCD screen generally has six to ten millimeters, and the two LCD screens have twelve seams. To twenty millimeters. In order to reduce the gap of liquid crystal splicing, there are several methods in the industry, one is narrow seam splicing, the other is micro splicing splicing, micro splicing is the shell of the LCD screen that the manufacturer will buy back, and the glass and glass Intersexual splicing, but this approach is more risky. If the LCD screen is not properly removed, it will damage the quality of the entire LCD screen. At present, there are very few manufacturers in China that use this method.

At present, LCD LCD splicing The most common LCD size is 40 inch, 42 inch, 46 inch, 47 inch, 55 inch, 60 inch, it can be spliced according to customer needs, up to 10X10 splicing, backlight illumination, long life Up to 50,000 hours. Secondly, the dot pitch of the liquid crystal is small, and the physical resolution can easily reach the high-definition standard. In addition, the power consumption of the liquid crystal panel is small, and the heat generation is low. The liquid crystal splicing screen of 40 inches or more has a power of about 150 W, and only about 1/1 of the plasma. 4, and the operation is stable, and the maintenance cost is low.

Common splicing screens are available in built-in, wall-mounted, ceiling-mounted and floor-standing styles. The installation of Juyou color display LCD splicing screen can design the splicing screen installation method and fixed support structure according to the actual environment of the installation site, and also design the screen structure of the front maintenance or the post maintenance according to the requirements.

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