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Detailed solution for led indoor full color display | led screen

With the advent of the era of light and shadow, indoor LED displays are widely used in various fields. In order to better serve overseas friends, so that everyone can be more familiar with, understand, and apply LED displays. Now we introduce the detailed solutions and functions of indoor LED display to our overseas customers. We hope that you will have a better understanding of LED display and LED indoor full-color display.

  1. It has a photosensitive control system that automatically adjusts the brightness of the display according to the changes in indoor and outdoor light, which is energy-saving and environmentally friendly, which greatly reduces your operating costs.
  2. High refresh rates and high grayscale make the LED display more lifelike and meet the requirements of high visual quality for commercial use.
  3. The advertising content on the LED advertising screen can be changed at any time, showing different advertisements for different customers around the clock.
  4. The dual network cable hot backup function can be realized. Two computers control one screen at the same time. When one computer has a problem, the other computer will automatically take over to ensure that the screen works normally.
  5. The use of an efficient optical fiber transmission system effectively reduces the signal delay caused by the long transmission distance and ensures the consistency of the picture playback.
  6. All the displayed information can be controlled by a remote network, and the screen information can be easily replaced with a mouse click, so as to realize the clustering of advertising display networks in cities and regions.
  7. Support network control function, enabling you to control the display screens of several cities in one place, and change the content you want to play at any time.
  8. Equipped with an environmental monitoring system, allowing you to know the operation of the display anytime and anywhere.
  9. Equipped with a multi-function card that can switch the display screen at any time by software timing or manually to realize the unattended function.

Advantages and wide application of LED rental screen

With the maturity of LED display technology, LED outdoor surface mount full-color mass production. Makes the LED rental display widely used in the light and shadow industry! This is also one of the focuses of future promotion! Collect and summarize some knowledge about LED rental screens here, hoping to help the majority of LED display workers!

LED rental screen (LED screen rental) is a special LED display screen used for stage performances and cultural activities. It usually appears in the form of rental, so it is named LED rental screen.

It is widely used in stage leasing, singing and dancing evening parties, various conferences, exhibitions, stadiums, theaters, auditoriums, lecture halls, multifunctional halls, conference rooms, performance halls, discos, nightclubs, high-end entertainment discos, etc., LED rental Compared with the traditional fixed screen, the screen has the following advantages:

  1. Lightweight, ultra-thin

The box of the traditional LED display is mainly SPCC (cold-rolled steel plate), commonly known as “iron box”. The thin plate is made into the shape of the box through processes such as bending, welding, and spraying; the cost is relatively low, but its disadvantages are: The box is too heavy, and the weight per square after the display screen is over 60kg, which is very heavy. The LED rental screen boxes used in the stage performance industry are basically die-cast aluminum boxes. The weight of the die-cast aluminum boxes is about 30-50kg/m2, which has the characteristics of lightweight and good thermal conductivity.


  1. A small error, zero stitching

Because the traditional LED display box adopts sheet metal processing methods, iron or aluminum plates are processed by bending and welding production processes. Due to the large error of such processing technology itself, it is easy to deform after processing, so the error is Millimeter level, it is difficult to meet the requirements of the display screen for zero stitching.

LED rental screen die-cast aluminum box body adopts the production process of module forming and machining, which can control the error within one-tenth of a millimeter, which can completely meet the requirements of zero seam.

  1. Quick installation

Because the cabinet is made of die-cast aluminum, it is lighter in weight, more accurate, and convenient and quick to disassemble. The technicians can splice a single cabinet within a few minutes, which greatly shortens the installation and disassembly time and saves labor costs.

  1. Long lifespan

The main component that affects the life of the LED display is the light-emitting diode (lamp). High temperature is the big killer of the light-emitting diode. The good heat dissipation and thermal conductivity of the aluminum box make the ambient temperature relatively stable, which can greatly extend the display screen. life.

To Support the arbitrary direction of the signal line, meet the arrangement and placement of different cabinets, to create different effects of the picture;

The lightweight, ultra-thin, and fast installation design allows you to complete the installation and disassembly of the display in a short time;

Equipped with a professional video processor, supporting AV, DP, VGA, DVI, YPBPR, HDMI, SDI and other signals;

Support 256-level brightness adjustment and white balance custom adjustment, so that different batches of displays can be used in a mixed manner;

Signal processing: RTF series products adopt signal folding technology, unit modules do not need to be cascaded, which greatly improves the display performance of the product. Using signal folding technology, unit modules do not need to be cascaded, greatly improving the display performance of the product;

Mask: It adopts a matte black mask. The rear buckle is used to fasten the mask. The LED light can be easily maintained in the front. The fastening screws are not visible on the front of the mask. The screen surface has good integrity and there are no screws when the screen is lit. Bright spots caused by light leakage;

Modules: Large modules are used, with only 4 modules per cabinet, reducing internal connections and improving product stability. Without opening the box, the display module can be directly disassembled from the rear of the box.

Back cover: Remove 4 screws and remove the back cover to maintain and replace the power supply and receiving card;

Radiator plate: The aluminum base plate is used to replace the traditional plastic bottom shell, which improves the heat dissipation performance of the product while ensuring flatness;

IC and driver: high refresh rate, high grayscale, high refresh rate, high grayscale 16384 grayscale products use high-end constant current driver chips with built-in PWM. In the case of a single receiving card loaded, the display refresh frequency can be as low as 960HZ and as high as 4800HZ. The gray level is up to 16bit, and the picture is stable, which can easily meet the requirements of high-end applications such as stage performances and broadcasts. The DC power cord adopts American standard wire, the power input adopts a surface mount socket, the power cord is not easy to lose, the line loss is minimal during the power transmission, and the input voltage is stable;

Compatible: The new structure design meets the requirements of hoisting and stacking, as well as indoor and outdoor requirements. Single cabinet, compatible with multiple pitches, compatible with indoor and outdoor modules;

High: High grayscale and high refresh rate design, grayscale 14 bit, refresh frequency >960Hz;

Low: Excellent heat dissipation design and heat dissipation performance, no external fans, air conditioners, etc., low noise; lightweight of the cabinet, low installation cost; low power consumption of the cabinet, saving operating costs;

The good waterproof effect, with IP65 protection level, suitable for outdoor rental use;

Equipped with various specifications of the air box, which is convenient for storage and transportation of the box, and has a good protective effect on the LED display.

The LED rental display is light in weight, thin in structure, and has the functions of hoisting and quick installation, so as to meet the requirements of fast installation, disassembly and transportation required by the rental occasion; easy to install and unload, easy to operate, the entire screen is fixed and connected by fast bolts, which can be accurate and The screen can be installed and dismantled quickly, and can be assembled in different shapes to meet site requirements; unique process: unique structural design of welding process optimization, to avoid faults caused by poor contact of electronic product solder joints caused by frequent handling.

How to install indoor LED display?

In order to let more friends understand the installation of LED display, as a professional manufacturer of LED display in the industry, it is the responsibility and responsibility to introduce the correct installation method of the LED display to friends. The following are installation instructions and precautions for indoor LED display magnets, please refer to:

  1. Make a steel frame structure (made according to the size requirements of the drawing), and then fix the finished shelf on the wall or hang it. can.
  2. First, connect the module power cord to the power supply, each power supply is connected to two one-to-three or three one-to-two power cords, according to the manufacturer’s configuration number, pay attention to the positive and negative polarity, the red wire is connected to the positive and the black wire Connect to the negative pole. Then fix the power supply in the corresponding position and fix it according to the position of the drawing. Connect the power supply directly to the 2.5 square cables, and pay attention to the live wire and the neutral wire not to be reversed. Usually, the red wire is connected to the live wire (L), the blue wire is connected to the neutral wire (N), and the yellow wire is grounded. The wiring sequence must be uniform and cannot cross;
  3. Fix the receiving card in the corresponding position, and fix the position according to the drawing. Connect the power cord of the card to the output end of the power supply in the same way as the power cord of the module. The power terminal of the receiving card is marked with positive and negative poles or 3-6V and GND. The GND terminal is connected to the black wire, and the 3-6V terminal is marked to be connected to the red wire. Don’t reverse it. Then insert the long flat cable into the receiving card. There are many sizes of the long flat cable. Pay attention to the order of length according to the distance between the card and the module. Do not plug the cable backward. Generally, the sockets are fool-proof and are not easy to plug them backward. Then connect the receiving cards in series with a network cable. Now the network port of the receiving card basically has no distinction between input and output. The previous old card should be in the order of left in and right out. The serial sequence of the network cables should be connected in a U-shaped or N-shaped sequence, and do not cross randomly;
  4. Put the magnets on the module. Generally, there are 4 magnets on each module (that is, four magnets on the opposite corners). Generally, the standard configuration of the manufacturer is 4 magnets for each module. According to the size of the module and the module on-site, The actual weight of the magnets is subject to the ability to hold the module. Insert a short cable into the output end of the module (for the output of the module to the input end of another module). Fix the modules on the steel frame in order, pay attention to the space between the top, bottom, left, and right when installing, do not misalign, and the flatness should be consistent. The long cables from the receiving card to the module are arranged in order from top to bottom. Start the installation from top to bottom. Each module must have a cable and power cord connection, which can not be omitted. After installation, you can power on and debug.

Precautions for operating LED display

With the rapid development of the LED industry and the widespread application of LED display screens, some merchants with LED electronic display screens do not fully understand the operation and use precautions of LED electronic screens, resulting in shortening the life of LED electronic display screens. As a manufacturer, based on the accumulation of some experience and knowledge over the years, I have summarized the following precautions and hope to help everyone.

Notes on Switching LED display screen:
1.Switching sequence:
   When turning on the screen: turn on the power first, then turn on the screen.
   When turning off the screen: turn off the screen first, then turn off
   (First turn off the computer without turning off the display screen, it will cause highlights on the screen body, led to burn the lamp, and the consequences will be serious.)
2. The interval between switching screens should be greater than 5 minutes.
3. After the computer enters the engineering control software, the screen can be powered on.
4. Avoid opening the screen in the all-white screen state, because the inrush current of the system is maximum at this time.
5. Avoid opening the screen in a runaway state because the system has the largest surge current at this time.
  A computer has not entered the control software and other programs;
B computer is not powered;
  C control part power is not turned on.
6. When the ambient temperature is too high or the heat dissipation condition is not good, the led lighting should be careful not to open the screen for a long time.
7. When a very bright line appears in a part of the electronic display body, it should be noted that the screen should be turned off in time, and it is not advisable to open the screen for a long time in this state.
8. The power switch of the display screen often trips. Check the screen body or replace the power switch in time.
9. Regularly check the firmness of the joint. If there is any looseness, pay attention to timely adjustment, re-strengthen or update the hanging parts.
10. According to the environment of the large screen display body and the control part, avoid insect bites, and if necessary, place rodenticide.
Notes on changes and changes in the control part
1. The power cords of the computer and the control section should not be connected in the reverse direction, and they should be inserted strictly according to their original positions. If there are peripherals, after the connection is completed, test whether the cabinet is live.
2. When moving the control equipment such as computer, please check the connection wire and control board for looseness before power on.
3. The position and length of the communication line and flat connecting line cannot be changed at will.
4. If abnormalities such as short circuit, trip, wire burning, smoke, etc. are found after the movement, the power supply test should not be repeated, and the problem should be found in time.
Notes on software operation of LED display screen
1. Software backup: WIN2003, WINXP, application programs, software installation programs, databases, etc. It is recommended to use “one-key restore” software for easy operation.
2. Proficiency in installation method, original data recovery, backup.
3. Master the setting of control parameters and modification of basic data presets
4. Skilled in using programs, operations and editing.
5. Regular inspection to delete irrelevant data
6. Non-full-time personnel, please do not operate the software system

Twelve steps to solve failures of LED display

1. The whole board is not bright: the board is not connected to the power supply; the input cable is reversed; the input and output are reversed; the positive and negative poles of the power supply are reversed.

2. The board is not bright and the transmission is normal: the protection circuit damage solution can short circuit the 4th and 5th pins of 74HC138.

3. One line is not bright after every three lines: 4953 is damaged (one of them is damaged).

4. One line after another line: A signal problem, please check whether 74HC245 and 74HC138 have virtual welding; you can use a multimeter to measure whether the voltage of pin 1 of 74HC138 is equal to about 2.5V, if there is a replacement 74HC138; carefully measure the path of the gold needle with ICA signal Happening.

5. Bright two lines every two lines: B signal problem, please check whether 74HC245 and 74HC138 have virtual welding; you can use a multimeter to measure whether the voltage of pin 2 of 74HC138 is equal to about 2.5V, if there is replacement of 74HC138; carefully measure the gold needle with ICA signal Access situation.

6. The upper half board is normal. The lower half board is all bright or not bright: if this is the case with the T08A interface, this should check whether the DR data signal of the next 8 lines is in the path. If it is normal, replace 74HC245 first. If it is not good, then replace the first one. 74HC595.

7. The STB and CLK signals of the half board and the lower board of this board are common, and the data is separated (if the T12 interface data is also 1). If the T08A board is checked, the upper and lower half boards should be checked separately.

8. If one of the lights on the board is not on: check if it is not soldered and replace this tube.

9. There are four lamps that are not standing upright: first check 74HC595 for virtual welding; second replace 74HC595; third replace lamp.

10. Among the 4 vertical lamps, 3 are not bright and 1 is normal: replace the normal one.

11. If the board displays abnormality from the middle or another position: check the data signal path; replace the 74HC595 of the last normal display control lamp; if it does not exclude the replacement of the first 74HC595 of the abnormal light control. Each 74HC595 controls 8 points wide **4 points high lamps. The 74HC595 is connected in series with the DR data signal, that is, the DR signal is connected from the 14th pin to the 9th pin of the 74HC595 to the next piece of the 74HC595 to the last 74HC595. For example, the DR data of this board is from the gold pin to 74HC345 After zooming in, it will go from UR1 to UR2 to UR3 to UR8 to the output gold pin.

12. Sometimes during the process of debugging the entire screen, the modules from the front to the rear are displayed abnormally. The general fault is that the cable is not plugged in or damaged; you can also use a slightly longer cable to check the module below. Plug the cable into the abnormal module above, and see how it shows. You can also connect the output of the normal module in front of the abnormal place to the next row of modules to see how it shows.

China P3.91 outdoor SMD Rental led display Screen

When it comes to availing the best and most effective display lights for business, LED’s have a competitive edge. There is no denying the fact that LED displays generate energy-efficient results, both indoors and outdoors however, the outdoor LEDs have the ability to target multiple potential users at once without adding any more costs. There are numerous advantages of using outdoor LED display.

A rental display is a bit different from a fixed LED display. The fixed LED display gets divided into the outdoor and indoor fixed display which remains fixed for a long period of time. The rental LED display needs to be shifted from one designated venue to other designated venues according to the requirements of performances and publicity.

Where to use a P3.91 Outdoor LED display?

In order to meet the often-moving performance, the vehicle-mounted led screens come into work. The Rental led displays are not only useful for outdoor, but they are also used for outdoors like fashion shows, stage shows, temporary advertising, new product launches, and more. With the P3.91 outdoor led display, you are going to receive better service. In order to remove strain on the service providers, the outdoor LEDs are used to improve customer service. It is going to be used in facial-recognition in order to enhance the self-service digital signage.

P3.91 outdoor LED displays improve the quality of life. There is no doubt that digital signs have a better ability to make urban centers a nicer place to enjoy life. There are multiple cities around the world that are replacing the static billboards with LED billboards. The digital billboards allow advertisers to share the same space.

The utility of the P3.91 Outdoor led display makes it unique. It can be widely used in multiple locations and rental places. This is extremely convenient for mobile rental, fast disassembly, and installations. You will be able to use it for wedding celebrations, stage dance performances, real estate opening celebrations, military performances, large school performances, advertising purposes, restaurants, large hotel rooms, stadiums, and movie halls.

How to install a P3.91 Outdoor LED display?

It can be easily assembled and dismantled. The P3.91 outdoor LED display is convenient and flexible to use, which reduces any sort of additional installation costs. it comes with a high-end realistic display colour effect and a novel appearance. It is light in weight with a box size of 500*500mm dimension. The single box is only 6.8kg and any single individual can install the device.

There are no installation gaps with seamless splicing, no noise, and less power consumption making it extremely efficient. It comes with excellent heat dissipation performance. This device is available in multiple variants with varying width and length.


Some more benefits of using P3.91 Outdoor LED display

Using the P3.91 LED outdoor displays instead of the static ones, will reduce the number of billboards throughout the city and improves the overall feel. Another important aspect of the P3.91 outdoor display is, it is very popular for rental use. It will be able to show excellent images even when there is no sunlight. The video or images present on the LED screen are vivid and fresh.

With the modern outdoor LED display, they consume a lot less energy than any other displays. This is one of the major reasons why businesses around the world are becoming a fan of outdoor LED signs. Low energy consumption leaves a positive impact not only on the environment but it also reduces the power expanse of the company. Instead of paying hundreds of dollars, the LED screen will bring down the bill to a half-price, and in most cases, it can become even less. Even though it runs on less energy, it offers outstanding picture quality.

The P3.91 outdoor large LED screen offers a wide-angle view. These screens have more than 110 degrees in both horizontal and vertical directions. The outdoor LEDs that remain suspended from higher altitudes require a better viewing angle to generate effective and efficient results. Since the cabinets are made up of lightweight aluminium, you can easily shift a rental LED screen from one place to another. Also, assembling and combining them is easy.


China’s LED Video Wall Equipment Manufacturers

CREUVIEW was founded: the company’s founder entered the LED display industry in 2010 and started as a general worker in the production line. He has done LED display module testing, LED lamp bead maintenance, LED display assembly testing, and Maintenance, LED display PCB design, LED display steel structure design, broad knowledge, rich accumulation, set up LED display company in 2019, committed to creating the CRUVIEW brand. Read more