With the development of LCD-related technologies such as liquid crystal display technology, embedded hardware splicing technology, multi-screen image processing technology, and signal switching technology, the new splicing curtain wall has been rapidly popularized in large screen display devices for engineering applications, especially embedded devices. LCD splicing curtain wall, although it was not a long time to launch the market, it was widely welcomed. LCD splicing curtain wall as a safe city command center, railway (subway), port, dock monitoring system, intelligent traffic management monitoring center, national defense or military surveillance system, power dispatch monitoring system, large-scale factory or mine monitoring system, financial management monitoring system, television station or large-scale The key display equipment that monitors and integrates information such as curtain walls, large-scale performance venues, curtain walls, and video conferences, and displays various types of computer analog/digital signals, composite video signals, color difference signals, etc. on a large screen and realizes signals. Switch, overlay, combination and other functions. The LCD splicing curtain wall is a high-tech splicing curtain wall different from the rear projection (DLP) video wall and plasma (PDP) video wall. The technical advantages of the splicing curtain wall are specifically described herein, and are described by specific examples.
First, the overview of the mosaic wall As we all know, currently in the field of stitching large-screen display manufacturers and a variety of technologies, can be described as flourishing, all leading the tide, but in the final analysis, can be divided into three major technologies, including LCD screen wall With development advantages.
1. The technical principle of the rear projection splicing curtain wall DLP is very simple. A projector is set inside the rear projection unit. The image sent out is enlarged through the lens and reflected through the lens and projected onto the back of the screen. This is the rear projection. DLP splicing curtain wall itself is categorized into numerous types, and various technical terms emerge one after another, but in summary, its outstanding feature is that the unit size is large, the technology is relatively mature, and the splicing seam is small; its main disadvantage is large volume, short life span, and the picture quality is not high. .
2. Plasma curtain PDP plasma is used as a home for displaying dynamic images. Due to features such as high brightness, high contrast, high color gamut, and wide viewing angle in the early stage of use, it has been well received by many users, but it has been used in security prevention or needs long When displaying static images or graphics, for example, when used as a monitor or spliced ​​into a television wall, there are serious drawbacks: the display of static images is likely to produce afterimages and even burn-in, ie, so-called plasma imprinting occurs, and the brightness decays rapidly. Once burned or reduced in brightness, it cannot be restored; reliability is low and power consumption is higher than other technologies. Currently, 42" screens have been specially used for splicing, and their borders are about 5mm apart, but the price is relatively expensive. Under the current state of the art, the disadvantages that cannot be overcome by the PDP seriously hinder its application in the commercial large-screen display market. .
3, LCD splicing curtain wall LCD is the most high-end, the most ideal display device, its excellent performance has been widely recognized. The liquid crystal splicing curtain wall adopts the liquid crystal screen as the splicing unit, overcomes the shortcomings of the DLP and the PDP curtain wall, and provides a splicing curtain wall with excellent performance and flexible use.
Of course, since the backlight of liquid crystal products still uses a cathode vacuum tube (CCFL), the filaments and the headers at both ends of the lamp tube limit the size of the liquid crystal panel. The frame of the DID liquid crystal screen used for the current screen is still 4mm-10mm. The width of the stitching seam is therefore a disadvantage of the LCD splicing curtain wall, but with the input of LED backlight technology, this defect will be significantly improved.
Second, the technical advantages of LCD splicing curtain wall LCD products relative to DLP products, PDP products in the use of effects, technical parameters of the advantages, is a well-known fact, needless to say. Here I focus on two major advantages in the field of large-screen splicing.
1, the size of the size of the combination, the use of more flexible liquid crystal a variety of sizes, free size. LCD splicing curtain wall, in addition to the optional number of splicing outside [row (m) × column (n)], the screen size also has a variety of options, and can be mixed splicing, which meets the needs of different uses of the venue.
We know that in addition to realizing a full-screen large-screen display, a multi-screen small-screen display must be realized. For example, a splicing curtain wall of a traffic monitoring center more often requires the realization of simultaneous viewing of all monitoring points. When an abnormal situation occurs at a monitoring point, it can quickly zoom in to the full screen for monitoring center owners to watch at the same time. This requires that in actual use, the splicing curtain wall should achieve a good display effect on both large and small screens.
DLP rear projection and PDP plasma splicing curtain walls have larger unit sizes, some of which can reach 100 inches or even 150 inches. This of course reduces the splicing seams when displaying large screens, but due to its lower resolution, if The use of a screen splitter achieves the purpose of displaying multi-channel images. The effect is not ideal, and due to the increase of equipment, the cost and stability of the system are greatly affected. The result is that the DLP splicing curtain wall can only be used to display a large screen, and many monitoring points and small screens still need to be displayed on the LCD monitor or other monitors. The signal switching is frequent and the effect is not ideal.
LCD splicing curtain wall, no such problems. We know that LCDs are relatively small in size, but their resolution is the highest, and they can be spliced ​​in size and size. This is beneficial to the user according to the actual needs, and reasonably arrange the splicing scheme to achieve the size and fit. Get its appropriate effect.
2. Stable life expectancy and low maintenance costs Compared to DLP and PDP, the service life of LCD is very long, and the power is low, the heat generation is small, and the failure rate is very low. PDP plasmas are prone to plasma imprints, and their dynamic display life may reach tens of thousands of hours, but when displaying high-brightness static images, there may be screen burns after 5,000 hours; while DLP's lamp life is only 3,000 to 5,000 hours, therefore, it is recommended that in the selection of security monitoring large-screen splicing walls that require 24 hours of continuous use, the LCD splicing curtain wall should be considered as far as possible in order to improve the use efficiency and reduce the use cost and maintenance cost.
Conclusion Liquid crystal splicing curtain wall is the most practical, most advanced, most reliable, and most economical large-screen terminal display device. Its appearance has solved various defects of the traditional TV curtain wall and provided the best large-screen display system for convenient, comprehensive and real-time display of various system video information, especially for remote real-time command, dispatching and other engineering applications.
First, the overview of the mosaic wall As we all know, currently in the field of stitching large-screen display manufacturers and a variety of technologies, can be described as flourishing, all leading the tide, but in the final analysis, can be divided into three major technologies, including LCD screen wall With development advantages.
1. The technical principle of the rear projection splicing curtain wall DLP is very simple. A projector is set inside the rear projection unit. The image sent out is enlarged through the lens and reflected through the lens and projected onto the back of the screen. This is the rear projection. DLP splicing curtain wall itself is categorized into numerous types, and various technical terms emerge one after another, but in summary, its outstanding feature is that the unit size is large, the technology is relatively mature, and the splicing seam is small; its main disadvantage is large volume, short life span, and the picture quality is not high. .
2. Plasma curtain PDP plasma is used as a home for displaying dynamic images. Due to features such as high brightness, high contrast, high color gamut, and wide viewing angle in the early stage of use, it has been well received by many users, but it has been used in security prevention or needs long When displaying static images or graphics, for example, when used as a monitor or spliced ​​into a television wall, there are serious drawbacks: the display of static images is likely to produce afterimages and even burn-in, ie, so-called plasma imprinting occurs, and the brightness decays rapidly. Once burned or reduced in brightness, it cannot be restored; reliability is low and power consumption is higher than other technologies. Currently, 42" screens have been specially used for splicing, and their borders are about 5mm apart, but the price is relatively expensive. Under the current state of the art, the disadvantages that cannot be overcome by the PDP seriously hinder its application in the commercial large-screen display market. .
3, LCD splicing curtain wall LCD is the most high-end, the most ideal display device, its excellent performance has been widely recognized. The liquid crystal splicing curtain wall adopts the liquid crystal screen as the splicing unit, overcomes the shortcomings of the DLP and the PDP curtain wall, and provides a splicing curtain wall with excellent performance and flexible use.
Of course, since the backlight of liquid crystal products still uses a cathode vacuum tube (CCFL), the filaments and the headers at both ends of the lamp tube limit the size of the liquid crystal panel. The frame of the DID liquid crystal screen used for the current screen is still 4mm-10mm. The width of the stitching seam is therefore a disadvantage of the LCD splicing curtain wall, but with the input of LED backlight technology, this defect will be significantly improved.
Second, the technical advantages of LCD splicing curtain wall LCD products relative to DLP products, PDP products in the use of effects, technical parameters of the advantages, is a well-known fact, needless to say. Here I focus on two major advantages in the field of large-screen splicing.
1, the size of the size of the combination, the use of more flexible liquid crystal a variety of sizes, free size. LCD splicing curtain wall, in addition to the optional number of splicing outside [row (m) × column (n)], the screen size also has a variety of options, and can be mixed splicing, which meets the needs of different uses of the venue.
We know that in addition to realizing a full-screen large-screen display, a multi-screen small-screen display must be realized. For example, a splicing curtain wall of a traffic monitoring center more often requires the realization of simultaneous viewing of all monitoring points. When an abnormal situation occurs at a monitoring point, it can quickly zoom in to the full screen for monitoring center owners to watch at the same time. This requires that in actual use, the splicing curtain wall should achieve a good display effect on both large and small screens.
DLP rear projection and PDP plasma splicing curtain walls have larger unit sizes, some of which can reach 100 inches or even 150 inches. This of course reduces the splicing seams when displaying large screens, but due to its lower resolution, if The use of a screen splitter achieves the purpose of displaying multi-channel images. The effect is not ideal, and due to the increase of equipment, the cost and stability of the system are greatly affected. The result is that the DLP splicing curtain wall can only be used to display a large screen, and many monitoring points and small screens still need to be displayed on the LCD monitor or other monitors. The signal switching is frequent and the effect is not ideal.
LCD splicing curtain wall, no such problems. We know that LCDs are relatively small in size, but their resolution is the highest, and they can be spliced ​​in size and size. This is beneficial to the user according to the actual needs, and reasonably arrange the splicing scheme to achieve the size and fit. Get its appropriate effect.
2. Stable life expectancy and low maintenance costs Compared to DLP and PDP, the service life of LCD is very long, and the power is low, the heat generation is small, and the failure rate is very low. PDP plasmas are prone to plasma imprints, and their dynamic display life may reach tens of thousands of hours, but when displaying high-brightness static images, there may be screen burns after 5,000 hours; while DLP's lamp life is only 3,000 to 5,000 hours, therefore, it is recommended that in the selection of security monitoring large-screen splicing walls that require 24 hours of continuous use, the LCD splicing curtain wall should be considered as far as possible in order to improve the use efficiency and reduce the use cost and maintenance cost.
Conclusion Liquid crystal splicing curtain wall is the most practical, most advanced, most reliable, and most economical large-screen terminal display device. Its appearance has solved various defects of the traditional TV curtain wall and provided the best large-screen display system for convenient, comprehensive and real-time display of various system video information, especially for remote real-time command, dispatching and other engineering applications.