LCD liquid crystal display is Liquid Crystal Display short, LCD structure is placed in two parallel glass which liquid crystal, two glass in the middle there are many vertical and horizontal small wires, LCD Display through the power or not to control the rod-like crystal molecules Change the direction of the light will be reflected out to produce the screen.
The LCD is made of two glass plates, LCD Display about 1 mm thick, separated by a uniform interval of 5 μm containing a liquid crystal material. Since the liquid crystal material itself does not emit light, so on both sides of the display are provided as a light source of the lamp, and in the back of the LCD screen has a backlight (or light plate) and reflective film, the backlight is composed of fluorescent substances Can emit light, LCD Display its role is to provide a uniform background light, the backlight issued by the light through the first layer after the polarization filter layer into the thousands of liquid crystal droplets into the liquid crystal layer.
The droplets in the liquid crystal layer are contained in a small cell structure, and one or more cells constitute a pixel on the screen. Between the glass plate and the liquid crystal material is a transparent electrode, LCD Display the electrode is divided into rows and columns, LCD Display at the intersection of rows and columns, by changing the voltage to change the liquid crystal rotation state, the role of liquid crystal material similar to a small light valve. At the periphery of the liquid crystal material is a control circuit portion and a driving circuit portion.
When the electrode in the LCD generates an electric field, LCD Display the liquid crystal molecules are distorted, so that the light passing through them is regularly refracted and then filtered through the filter of the second layer on the screen.
LCD splicing (LCD splicing) is the DLP splicing, PDP stitching, the rise in recent years, a new splicing technology, LCD LCD splicing wall with low power consumption, LCD Display light weight, long life (generally can work 50,000 hours) , No radiation, the screen brightness uniformity, etc., but its biggest drawback is that can not be seamless stitching, the display screen requires very fine industry users, LCD Display a little bit of regret.
As the LCD screen in the factory will have a border, LCD splicing will appear border (seam), such as a single 21-inch LCD screen border generally 6-10mm, LCD Display two LCD screen connected to the seam there are 12- 20mm. In order to reduce the gap between the LCD splicing, the current industry there are several practices, one is the stitch stitching, the other is a micro-stitching, LCD Display micro-stitching that manufacturers will buy back the LCD screen shell removed, the glass and glass Between the stitching, but the risk of this approach is greater, if the LCD screen is not good, will damage the quality of the entire LCD screen, LCD Display there are very few domestic manufacturers to use this method. In addition, Samsung launched a special LCD splicing screen - DID LCD screen, DID LCD screen is designed for stitching, in the factory when the border to do a very small.