Technical principles of LCD splicing

LCD splicing screen resolution is an important indicator related to the display image format. Usually the resolution we refer to refers to the physical resolution of the LCD screen, that is, the number of points displayed on the screen, which is the horizontal and vertical pixel values. This value determines the clarity of the LCD screen.

As of 2013, the mainstream resolutions of LCD splicing screen products are 1366×768 and 1920×1080, which conform to the commonly known widescreen ratio of 16:9. 1366×768 meets the national high-definition TV standard. the minimum resolution limit. There are three main formats for future high-definition TV signals, namely 720p, 1080i and 1080p. The currently popular Blu-ray BD and HD DVD also use these three formats.

Some businesses like to make a fuss about the concept of "resolution" and advertise some small-size LCD screens with a physical resolution of only 1366×768 as having a maximum supported resolution of 1920×1080. In fact, here There is a trap. Consumers are misled because of the two words "physical" and "highest support". How wide the screen and how high the pixels the LCD screen can display depends entirely on its physical resolution. A TV that claims to support the highest resolution of 1920×1080 actually only indicates that the product supports the signal input format of 1920×1080. In addition to being related to the panel characteristics, it is also related to the TV’s driver decoding and other technologies. But in fact, if the panel If the physical resolution is only 1366×768, such a panel will not display the 1920×1080 signal screen in a one-to-one corresponding point-to-point display mode, but will convert the 1920×1080 signal through image transformation. It is converted into a 1366×768 format that is consistent with panel output and then presented to the audience. This conversion process will inevitably be accompanied by compression and loss of picture effects. What users see is not the quality of the original 1920×1080 picture.

In addition, everyone needs to be reminded that resolution and screen aspect ratio are not the same. Under normal circumstances, the horizontal dot pitch and vertical dot pitch of screen pixels are the same, which means that the pixels are square, so the parameter ratio of the resolution can be regarded as the screen width to height ratio, for example, a panel screen with a resolution of 1366×768 The ratio is 16:9. However, there are also some products where the horizontal dot pitch and vertical dot pitch of the screen pixels are different, which means that the pixels are rectangular. In this case, the resolution parameter cannot show the aspect ratio of the screen. For example, the resolution is 1024× There is actually no contradiction between 1024 products and products with a screen ratio of 16:9. 1024×1024 does not mean that the screen of the product is square. Distributed signal control technology is one of the patented control technologies of the IWS splicing processor. Each independent module is used inside the splicer for parallel processing. Before the signal is input to the splicer, it needs to complete the scheduling and control of the signal through proprietary technology to realize each channel. The balance between signal transmission and hardware bandwidth.

For signals entering non-public areas, each window signal corresponds to an independent processing module and controls the display content of the corresponding display unit; the external matrix completes signal distribution and scheduling switching; Unimportant signals enter the CBD area. During window operation, according to different window display modes, the matrix completes the micro-distribution of the corresponding signals. In some special cases, if more display bandwidth is needed, part of the display function of the base map can be released to increase bandwidth requirements. LCD splicing is a professional terminal display equipment designed for engineering applications. It is based on FPGA array and uses parallel high-speed graphics processing technology to achieve unified processing of multiple high-speed video signals. It fundamentally replaces the plug-in splicing controller and solves the problem of limited VGA signal input quantity. It integrates the most outstanding high-definition, high-brightness and high-color gamut LCD technology, embedded hardware splicing technology, multi-screen image processing technology, signal switching technology, etc. to form a high-brightness, high-definition LCD display technology. , low power consumption, long life, advanced LCD splicing curtain wall display system.

LCD splicing curtain wall is a new large-screen splicing method that can be spliced ??infinitely. Flat panel splicing display technology will be the mainstream application technology for the next generation of splicing display systems. After years of development, liquid crystal display technology has occupied an important position in the field of flat panel splicing displays. The spliced ??curtain wall has outstanding advantages such as ultra-light, ultra-thin, long life, low maintenance cost, low power consumption, no radiation, and high definition, and has attracted much attention. LCD splicing curtain wall, with LCD screen as the basic display unit, integrates the latest LCD technology and pure hardware high-speed real-time splicing control technology. All input signals can be freely displayed in the display wall window, fully supporting the cross-screen image , roaming, picture-in-picture, overlay, zoom and other high-end display functions. The controller is tailor-made for the display screen and is dedicated to the special machine, which can maximize the performance of the display unit. The LCD splicing curtain wall has clear images, flexible and diverse combinations, and rich display content. It can give users the greatest freedom of design space and provide stunning display effects. LCD splicing walls are widely used in: video surveillance, telecommunications, public institutions, process processing, traffic control, security monitoring and national defense, stage entertainment, TV studios, stocks, large-scale exhibitions, shopping malls, banks, office halls, companies Welcome screens, specialty stores, dispatching and command, etc. Practicality of LCD splicing curtain wall LCD splicing curtain wall has a large space for combination: it can be spliced ??with small screens or large screens; it can be spliced ??one-to-one with a single screen, or it can be spliced ??with a pair of M×N whole screens; You can also mix and match large and small screens. According to the system scale and application requirements proposed by customers for the LCD splicing curtain wall system, and according to the system's usage environment, we can select appropriate products and splicing methods, and design specific implementation plans to meet the system's application needs.

You can choose different video processing systems according to the user's requirements for input signals to realize VGA, composite video, S-VIDEO, YPBPR/YCBCR or DVI signal input to meet different use occasions and different signal input requirements. need. Through the control software, various signals can be switched, spliced ??into full-screen display, arbitrary combination display, image stretching display, image roaming display, image overlay display, etc. LCD splicing curtain wall can create personalized systems according to the different needs of customers, and provide different implementation plans and technical support.