The emergence of large interactive multimedia screens meets the needs of display and interaction under the screen, and the natural interaction between people and the screen has become a reality.
Among them, the intelligent interactive terminals in the top 10 interactive multimedia screens in the industry can use the materials of ordinary screens such as LCD screens, LED screens, etc., and at the same time, the size can be expanded to a large size, and the screen shape is changeable.

The three main interactive functions in the interactive multimedia large screen are introduced in detail below.

Multimedia interactive led screen

1. Off-screen precise remote control function

Users can use the laser remote control to accurately control the display content on the smart large screen within a certain distance from the intelligent terminal screen of the interactive multimedia large screen, within a large range of the angle between the laser remote control and the screen, including single Double click function, document page turning function, mouse control function.
In addition, the user can adjust the time window layout in real time through the shortcut buttons on the remote control, and has the function of one-button recovery to display the interactive multimedia large-screen scene.

2. Finger or digital pen/pointer touch function

The interactive multimedia large screen supports people to directly click and drag the icons, soft interfaces, documents or pictures of the smart large screen with their fingers, such as precise clicking and dragging on the computer. Quick response without delay after control.
In addition, people can also use digital pens or pointers to write, mark, and control the rotation of the monitoring screen on the large interactive multimedia screen.

3. Physical interaction function

With the help of the intelligent interactive terminal in the interactive multimedia screen, people can interact with various objects including sand table, miniature landscape and photo wall through tools such as laser remote control or pointer.
At the same time, through the physical interaction function, people can open information resources such as pictures, videos, texts, charts, executable files, web links and other information related to the physical objects on the interactive multimedia large screen, which is convenient to show customers the development of the company in an intuitive form. History, honorary certificate, review of major events, etc.

To sum up, the interactive functions in the interactive multimedia screen are mainly composed of finger or digital pen/pointer touch function, off-screen precise remote control function and physical interaction function.

In addition, the interactive terminal with a promising interactive multimedia screen in the future can also realize the function of somatosensory interaction. People can use gesture operations to complete the manipulation of the interactive multimedia screen, and the gestures can be customized and programmed into the program of the interactive multimedia screen.

Since the COVID-19 pandemic, many small and medium-sized real estate companies have faced closures and shutdowns.
Large real estate companies are seeking new models for development, and global real estate companies have attracted a new round of real estate competition, which also makes various real estate marketing models emerge in an endless stream in the market.
Various modern visualization, informatization and intelligent publicity and display platforms have been widely operated in the real estate industry.

In such a fiercely competitive real estate industry, the sales office serves as the carrier of real estate image, customer experience center, real estate image display, sales completion and other functions. Therefore, building a sales office with beautiful appearance, fashionable atmosphere and highly concentrated internal functions has become the primary task of real estate competition. In order to better stay close to life and the development of modern society, when designing a sales office, the intelligent multimedia information display platform of the sales office must bear the brunt.

Choosing a good multimedia information display platform for the sales office can create a unique and favorable environment for customers to buy a house, thereby better promoting the promotion of real estate and establishing the brand image of the developer.

Recently, a real estate decided to build 2 sets of modern, information-based and intelligent multimedia information display platforms in the sales office to improve the hardware and software equipment of the sales office and enhance the publicity and display system of the sales office. In the early stage of the project, the real estate sales office screened the commercial display manufacturers from all over the world and built 2 sets of multimedia information display system platforms.

Professional engineers conducted on-site investigations and measurements, and tailored a set of 3×3 splicing multimedia information display system platforms with nine 3.5mm 46-inch LCD display units, and a set of P2.0 LED display screen on their site and user needs. The display screen creates a set of intelligent information interactive display system platform for the display unit.

In this project, the 46-inch LCD display has an LCD splicing screen with a 3.5mm ultra-narrow edge splicing gap, an industrial-grade panel, 4K ultra-high-definition display technology, LED backlight technology, 3D image noise reduction technology, and 178° ultra-wide viewing angle extension technology. Let the whole system run stably for a long time, so that the picture is not distorted, clear and delicate.

The other set uses a P2.0 LED display, which has a high-gray and high-brush driver chip. It displays bright colors and soft light. It will not cause dizziness when viewed at close range. The almost imperceptible full-screen seamless effect maintains the continuity of the picture, and the use of point-by-point correction technology ensures the consistency of the picture brightness. Similarly, this set of LED display screens can adjust the color temperature of the screen in a wide range, which perfectly meets the requirements of the virtual simulation platform with high color accuracy requirements and ensures the accurate restoration of images.

What is LED splicing screen?

LED splicing screen is also called electronic splicing screen. It is different from LCD splicing screen. It is mainly composed of LED dot matrix and led pc panel, and then displays the text and pictures you want to show by turning on or off the LED lights of various colors. Or video etc. The LED splicing screen has higher brightness, presents a larger picture, and has a strong three-dimensional sense. It can present a clear picture both indoors and outdoors, so it is more and more used by various industries.

Four connection forms of LED display:

1. The whole screen of the LED display is assembled in series: the LED1-n in the general simple series connection method are connected end to end, and the current flowing through the LED display is equal when it is working. The other is the improved way of series connection with bypass as 1.1.

2. The LED display screen is assembled in parallel for the entire screen: one is a simple parallel form, and the other is an independent matching parallel form. The LED1-n in the simple parallel mode are connected in parallel end to end, and the voltages on each LED are equal during operation.

This kind of reliability is not high, but it also adopts the parallel form of independent matching to solve this problem, which has the characteristics of good driving effect, complete protection of a single LED display, no impact on other work in case of failure, and large differences in matching.

3. LED display cross array assembly method: The cross array shape is mainly proposed to improve the reliability of the LED display and reduce the failure rate.

4. Hybrid assembly method of LED display screen: the advantages of parallel connection and series connection mentioned in the appeal are comprehensive. It also includes 2 kinds. One is the hybrid mode of first serial and then parallel, and the other is the hybrid mode of first parallel and then serial.

The above four LED display assembly and connection methods have their own advantages and disadvantages, and the most suitable LED display connection method can be selected according to different applications. Many engineers and technicians tend to ignore this point, which leads to various connection failures in the LED display, which ultimately affects product quality and reduces user trust. It can be seen that the assembly of the LED display screen, the details determine the success or failure!

LED display splicing precautions:

1. The filling factor should be high:

And the LED display screen is composed of discrete pixels, and there are obvious non-luminous black areas between the pixels, so when viewed from a close distance, the picture is not coherent and incomplete, and the uneven brightness produces a grainy feeling. If the light source is limited In a very small pixel surface area, when the brightness of a single pixel is several times or even more than ten times the brightness of the entire screen, it will cause a more serious glare.

The TCO'99 standard recognized by the flat panel display industry stipulates that the fill factor of the display device should not be less than 50%. For LED displays with the same dot spacing, the smaller the fill factor is more attenuated than the larger one, so the shooting distance needs to be increased; and if the low-pass filter passband of the system is 4MHZ, the high-frequency attenuation characteristic is 12dp times. frequency range.

Then the shooting distance with a fill factor of 25% is attenuated by 1.15dp more than a fill factor of 50%, and the shooting distance needs to be increased by about 10%. Therefore, the higher the fill factor, the wider the viewing angle of the display screen and the more ideal color mixing effect. ; Therefore, it also solves the problem of glare, and also creates conditions for properly increasing the brightness of the entire screen to obtain better effects.

2. The dot spacing of the LCD splicing screen should be small:

The dot pitch is the distance between the LED display screen adjacent to the pixel center point. The smaller the dot pitch, the more pixels per unit area, the higher the resolution, and the closer the shooting distance can be; therefore, in order to achieve an excellent display effect, it is necessary to pay attention to the difference between the resolution of the signal source and the dot pitch. And try to achieve the same resolution, point-to-point display has been achieved, so as to achieve the best display effect.

3. Adjustment status of color temperature

Color temperature is the temperature determined by comparing the shape of the emission spectrum of the emitter to the shape of the best fit black body emission spectrum. For example: when the studio uses the LED display as the background to display the picture, its color temperature should be consistent with the color temperature of the indoor lighting in the studio, so that accurate color reproduction can be obtained during shooting; therefore, as long as the LED display is adjusted to the corresponding color temperature, Satisfactory shooting results can be obtained.

4. Appropriate use environment:

As an integrated electronic product, LED display is mainly composed of control panel, light-emitting device, switching power supply and other components equipped with electronic components; and the stability and life of these components are closely related to the environment in which they are used. . When the actual working temperature exceeds the specified use range of the product, it will not only shorten the service life, but also seriously damage the product itself.

And if you work in a dusty environment, the deposition of dust will also affect the heat dissipation of electronic components, causing the temperature of the components to rise, resulting in a stable thermal drop or even leakage. In more serious cases It will cause the equipment to burn out and cause huge economic losses, so the use environment should also be the "top priority" of attention.

Expand all four led display connection forms:

1. The whole screen of the LED display is assembled in series: the LED1-n in the general simple series connection method are connected end to end, and the current flowing through the LED display is equal when it is working. The other is the improved way of series connection with bypass as 1.1.

2. The LED display screen is assembled in parallel for the entire screen: one is a simple parallel form, and the other is an independent matching parallel form. The LED1-n in the simple parallel mode are connected in parallel end to end, and the voltages on each LED are equal during operation.

This kind of reliability is not high, but it also adopts the parallel form of independent matching to solve this problem, which has the characteristics of good driving effect, complete protection of a single LED display, no impact on other work in case of failure, and large differences in matching.

3. LED display cross array assembly method: The cross array shape is mainly proposed to improve the reliability of the LED display and reduce the failure rate.

4. Hybrid assembly method of LED display screen: the advantages of parallel connection and series connection mentioned in the appeal are comprehensive. It also includes 2 kinds. One is the hybrid mode of first serial and then parallel, and the other is the hybrid mode of first parallel and then serial.

The above four LED display assembly and connection methods have their own advantages and disadvantages, and the most suitable LED display connection method can be selected according to different applications.

Extended information:

Precautions:

1. Switch sequence:

When the screen is turned on: first power on, then turn on the screen. When the screen is turned off: turn off the screen first, then shut down
(Turn off the computer first without turning off the display screen, which will cause bright spots on the screen body, and the LEDs will burn the lamps, which will cause serious consequences.)

2. The time interval between switching on and off the screen should be more than 5 minutes.

3. After the computer enters the engineering control software, the screen can be powered on.

4. Avoid opening the screen in a completely white screen state, because the inrush current of the system is the largest at this time. 5. Avoid opening the screen in an out-of-control state, because the inrush current of the system is the largest at this time.

5. When the ambient temperature is too high or the heat dissipation conditions are not good, the LED lighting should be careful not to open the screen for a long time.

6. When a part of the electronic display screen appears very bright, you should pay attention to closing the screen in time. In this state, it is not suitable to open the screen for a long time.

7. The power switch of the display screen often trips, and the screen body should be checked or the power switch should be replaced in time.

8. Regularly check the firmness of the connection. If there is any looseness, pay attention to timely adjustment, re-reinforce or update the hanger.

9. According to the environment of the large-screen display screen and the control part, avoid insect bites, and place anti-rat medicine if necessary.

Expand all to splicing with the smallest unit module Expand all directly to the above picture, just take a look and you will understand

LCD video walls have become a well-deserved main force, and are widely used in government, education, security and other fields. Five common misunderstandings in the purchase and application of LCD video walls: 1. Not the thinner the better 2. Splicing The larger the size of the unit, the greater the power consumption is not necessarily greater 3. There are temperature restrictions 4. There will be no color difference 5. When using the LCD video wall for a long time, it is best to let it rest intermittently.

Five misunderstandings of efficient application of LCD video wall

In today's commercial large-screen display market, LCD splicing has become a well-deserved main force, and is widely used in government, education, security and other fields. For the majority of industry users, although the LCD video wall is not unfamiliar, most of its understanding is superficial, and they do not have professional knowledge, which directly leads to many users inevitably purchasing and applying products. will fall into some misunderstandings, which will ultimately affect the use effect. See this article to comprehensively sort out several common problems in the purchase and application of LCD video walls to help industry users use them efficiently.

The thinner the LCD video wall, the better?

With the continuous maturity of LCD splicing technology, LCD video walls are becoming thinner and thinner. Under the vigorous publicity of industry manufacturers, the advantages of thin and light products have been well known by many industry users. For example, the weight is reduced, the screen experience is more beautiful, it is easier to install, and it can also speed up the response time. Relevant studies have shown that if the thickness of the spliced ​​large screen is reduced by 20, its response speed will be increased by 35 on the original basis. So, does this mean that the thinner the LCD splicing product, the better? The answer is of course no, because the thinner the product will also bring certain negative effects, users must understand before purchasing.

The thinner the thickness of the product, the higher the requirements for the manufacturing process. If the manufacturing process is not up to standard, not only the color displayed on the screen will become dim, but the viewing angle will also become smaller, and at the same time, the probability of dead pixels on the screen will also increase. , and the yield of the product will decrease. So far, there is no complete set of technology in the industry to solve the above problems. Therefore, to produce thin and light products, the production cost of manufacturers will increase a lot. Correspondingly, if it is transferred to industry users, the cost of use will also be greatly increased. . High cost and many hidden dangers are what users must consider when they are pursuing the ultimate light and thin products. Of course, if conditions permit, they must choose, and it is best to choose big brand products with guaranteed quality and after-sales service.

The larger the size of the LCD splicing unit, the greater the power consumption?

In the current field of LCD splicing, large size and energy saving and environmental protection have become equally popular trends. However, for many industry users, this has become the frustration of "you can't have both fish and bear's paw", because, in the subconscious mind of many people, large size will bring large power consumption? This is not the case .

Relevant studies have found that the power consumption of LCD splicing units of different sizes does not change much. For example, the mainstream 46-inch, 50-inch and 60-inch LCD splicing units on the market consume roughly the same power under the same conditions. Strictly speaking, the power consumption of the LCD video wall is determined by the number of LCD splicing units. The splicing unit is used to reduce the number of splices, but it will save more energy.

No temperature limit for LCD video wall applications?

With the continuous improvement of market awareness, the application scope of LCD video walls has been continuously expanded, which has created its "universal" attribute for many industry users. In fact, if you want to ensure the efficient application of LCD video walls, the surrounding environment temperature is a factor that cannot be ignored. Generally speaking, the best use temperature of the LCD video wall is between 0 and 40 degrees Celsius, because the thermotropic liquid crystal used in the LCD screen is derived from the change of temperature, and its photoelectric effect is controlled by temperature. Within the temperature range of use, it is equivalent to getting rid of the electric field control without the photoelectric effect, and various problems will occur.

In practical applications, if the temperature conditions of the application environment are harsh, the user is best to install an air conditioner and set the temperature between 25 and 26 degrees Celsius to ensure that the LCD video wall is in the best working condition.

LCD video wall will not appear chromatic aberration?

It is well known that DLP video walls will have color attenuation after a period of use, that is, chromatic aberration, which affects the use effect. For this, some LCD splicing manufacturers have no chromatic aberration as an important promotional point in their marketing. So, is there really no chromatic aberration in the LCD video wall? In fact, the LCD video wall will also experience color attenuation after a period of use, and this attenuation is irreversible, but its attenuation does not happen often. Moreover, in response to this, many manufacturers have certain adjustment methods to effectively prolong the service life.

Does the LCD video wall need a "rest"?

In the current LCD splicing market, continuous operation of 7x24 hours has become a key element in the marketing promotion of manufacturers. So, in practical applications, does the LCD video wall really need to rest? In fact, if users want to prolong the service life of the LCD video wall as much as possible, they should try to give it a "holiday".

Relevant studies have found that if the LCD video wall works continuously for more than 96 hours at full load, it will accelerate its aging, and even burn out in severe cases. Therefore, when the LCD video wall works for a long time, it is easy for some pixels to overheat. It will cause permanent damage. Therefore, when the user uses the LCD video wall for a long time, it is best to let it rest intermittently for a while. Tweak a little while waiting for the working state.

Conclusion:

The continuous expansion of the application scope has made the user group of LCD video walls more and more popular. Although they are not unfamiliar with the application of LCD video walls, the related majors are very scarce. Therefore, iSEMC, as an industry manufacturer, if they want to adapt The trend of industry transformation and to establish the image of one's own comprehensive service provider, it is necessary to try to guide users professionally in basic purchase and application details, so as to quickly enhance the user's sense of trust, so as to win greater play for the subsequent plan formulation. space.

iSEMC professional video wall solution provider, hereby wish you and your family a Merry Christmas;

The video wall refers to the splicing of different numbers of screens into a large display screen to achieve the effect of image magnification display. In addition, it can also integrate multiple screens and display them on one screen at the same time to achieve multiple functions. Common application areas include outdoor large screens, monitoring command centers, conference rooms, etc. According to different functions, the video wall also includes a variety of display technologies.

So now, what types of video walls are there?

Four types of large-screen splicing technology: LED, LCD, DLP, PDP
The mainstream display products on the market include LED displays, LCD displays, etc., which represent the latest technology. Among them, the application of large-screen splicing technology is undoubtedly one of the hottest topics. The following four types of large-screen splicing technology are the most popular Representativeness, let’s make a simple comparison of their advantages and disadvantages for the convenience of friends to understand.

LED display
By controlling the display mode of semiconductor light-emitting diodes, the red, blue, white, and green LED lights are turned on and off to display text, pictures, animations, videos, and content. 
LED splicing display is a kind of large screen, which is mainly spliced ​​by LED unit boards. The distance between the lamp beads on each unit board is different, and its display effect is also different. Its main function is to be used as a large screen, like a square. Large screens and sky screens in shopping malls have the advantage of seamless stitching, but the disadvantage is the lack of resolution. There are more outdoor applications.

Focus: bigger, thinner and more stable
Advantages: long life, spherical display, strong and durable, suitable for outdoor applications
Disadvantages: The pixel points are sometimes obvious. The industry's finest LED point pitch is 1mm, which is not easy to miniaturize.

LCD video wall
The LCD liquid crystal display technology is adopted, and a back-illuminated screen is formed through the liquid crystal panel to form a full-HD, colorful screen. This display technology is characterized by clear pictures, high contrast, and mature technology, which is currently the mainstream A display technology, compared with our home LCD TVs, LCD video walls are industrialized on the panel based on this, so as to achieve the requirement of continuous startup, and its frame is only a few millimeters, so after splicing it together The impact of the image is very small. With control equipment such as a decoder or matrix, it can realize functions such as monitoring, decoding, display and signal switching. It is currently widely used in various monitoring centers and conference displays.
The liquid crystal itself does not emit light, it relies on the backlight tube to emit light, so the LCD screen depends on the backlight tube.

Focus: taller and thinner
Advantages: high resolution, thin thickness, light weight and long life
Disadvantages: There is a delay problem, and the splicing gap is obvious

DLP video wall
Digital light processing, that is to say, this technology needs to digitally process the image signal, and then project the light.
DLP is a rear projection device that uses a kind of reflective imaging technology on a screen. Its core equipment is an optical machine, which mainly includes two types of laser light sources and LED light sources. It is the main equipment used in monitoring and display in previous years. The seam is very small, basically negligible, the single screen size is large, ranging from 50 to 100 inches, the defect is high and the maintenance cost is high, the lights and the optical machine need to be replaced regularly, and the equipment is large in size, and the space requirements are relatively high. However, with the rise of LCD video walls, this market has been devoured more seriously. At present, it is only used in some large-scale occasions, such as public security traffic police command centers and data analysis centers.

Focus: bigger and higher
Advantages: seamless splicing, the largest display area, support for spherical display
Disadvantages: high maintenance costs in the later period, lamp life problems, must have a projection distance

Plasma PDP splicing
The ion display is a display device that uses gas discharge to emit light. This screen uses a plasma tube as a light-emitting element.

Focus: thinner
Advantages: high brightness, short response time
Disadvantages: limited by materials and processes, the screen size is small and the display quality is poor. In terms of the development trend of the entire industry, the development potential of plasma splicing is limited, and it will definitely be replaced in the future

Summary: The advantages and disadvantages of the above four types of large screens are different. Of course, it is not to say which screen is not good. They are suitable for use in their respective fields. Among them, LED display screens, as a key product in the field of large screens, have prospects in outdoor advertising, stage dance and other fields. broad.