General Guide for B2B Selection of LCD Splice Screen: How to Choose Accessories for Monitoring/Advertising/Meeting Splice Size

LCD splicing screen is not "buy a few big TV together", but a set of display system composed of screen body, signal processing, installation structure and long-term operation and maintenance. One wrong step in selection, and the cost is all behind it: the screen can't get the monitoring signal on the wall, the number of decoder roads is not enough to get on the wall, the picture is missing, the budget is missing, and the quotation for accessories is cut back. This article according to the "scene definition → environmental survey → core hardware → signal accessories → budget bidding → implementation of operation and maintenance" six steps, the B2B splicing screen of the complete decision-making path once clear, each step gives the selection rules and comparison table, can be directly seated.

1. B2B splicing screen selection is not to buy TV

Consumer-level buy TV, look at the size and price is over; B2B splicing screen is to see the system delivery and long-term stability. The same 55-inch screen requires 7 × 24 hours of continuous operation for monitoring, remote release and timing switch for advertising, and seamless, touch and screen projection for meetings. Different scenes, patchwork, size, brightness, accessories combination is completely different.

First look at a few common failure cases and compare whether your project has been stepped on:

• Just look at the patchwork and ignore the signal system-The screen was selected. As a result, 50 channels of monitoring signals could not be installed on the wall, and decoders and processors had to be supplemented.
• Not enough decoder paths-50-channel monitoring is only equipped with 16-channel decoder, and the upper wall picture can only be switched in turn.
• Budget missed accessories-Processor, matrix, wire, installation and commissioning are all calculated separately, and the final accounts are over 30%.
• When 0mm is physically seamless-During acceptance, it is found that 0mm is optically treated with bright edges, which is inconsistent with expectations.

This article solves this kind of problem: walk the complete decision path from scene to accessory.

2. a picture to understand: B2B selection six-step decision-making method.

The whole selection process can be compressed into six steps, each step has a clear output, after one step to the next, do not jump:

1. Scene definitionFirst, find out who to show, what to see and how to look at it. Output: List of scenario requirements.
2. Environmental Investigation: Wall, load-bearing, power supply, network, wiring, viewing distance. Output: survey list, screen quantity estimate, installation method preliminary judgment.
3. Core Hardware Selection: Patchwork, size, brightness, panel. Output: Screen selection confirmation sheet.
4. Selection of signal and accessoriesDecoder, processor, matrix, play box, screen, etc. Output: List of system equipment.
5. Budget, Bidding and Suppliers: Cost dismantling, tender parameters, supplier evaluation. Output: budget table, bidding parameter table.
6. Installation, commissioning, acceptance, operation and maintenance: Installation method, calibration, acceptance criteria, operation and maintenance plan. Output: acceptance form, operation and maintenance manual.

Remember this global framework first, and expand it chapter by chapter.

3. first step: scene definition-first make clear "to whom, what and how to look at it"

The typical scene of splicing screen is divided into five categories:

• Monitoring Security: Public security, transportation, parks, campuses, factories, emergency command.
• advertising business: shopping malls, stores, transportation hubs, cinemas, hotel lobbies.
• Conference collaborationCorporate conference room, lecture hall, training room.
• Command and Dispatch: Emergency, electricity, water conservancy, civil air defense, urban management.
• Exhibition Hall Display: Enterprise exhibition hall, science and technology museum, planning museum, museum.

Each scenario must answer six questions, and the answers directly determine the hardware selection that follows:

• What are you looking at?Monitoring screen, advertising content, meeting screen, data visualization?
• Who look: Commanding personnel, customers, participants, visitors?
• Viewing distance: 1 meter, 3 meters, 5 meters, 10 meters or more?
• Runtime duration: 7 x 24 hours, or 8 hours a day?
• Number of signal paths: How many channels of monitoring, how many computers, how many broadcast sources?
• Interaction requirements: Do you need touch, screen projection, AI tracking?

4. Step 2: Environmental Survey-Installation Conditions Determine Program Boundaries

Many projects die in the step of looking at the scene: the wall does not bear enough weight, there is no maintenance space, and the power supply is insufficient. No matter how good the plan is, it cannot be installed. The investigation list is as follows:

• Wall Size: width, height and usable area, make sure you can put several rows and columns.
• Load-bearing: Wall type (solid wall, hollow brick, glass curtain wall), whether steel structure reinforcement is required.
• Power supply: Total power, socket location, whether UPS uninterruptible power supply is required.
• Network: Whether the monitoring network, office network and external network are separated, and the distance between the cabinet and the screen.
• Wiring: Routing and length of signal lines, network cables, optical fibers, and power lines.
• Maintenance space: How much space is left behind the screen to decide whether to maintain before or after.
• Viewing distance: The nearest viewing distance determines the patchwork and size selection.

The two most commonly used estimation formulas (uniform units are sufficient):

For example, a 55-inch screen (about 1213 × 684mm, including borders) and a 3 × 3 splicing (1.8mm of patchwork) are about 3643 × 2056mm, about 3.6 × 2.1 m, plus the allowance of cabinet or steel structure, at least 3.9 × 2.4 m of wall surface shall be reserved on site. See the decision table in the next chapter for the matching relationship between viewing distance and patchwork.

Output: Site investigation list, preliminary judgment of installation method (wall hanging/cabinet/hydraulic support), and estimation of screen quantity.

5. step 3: core hardware selection-patchwork, size, brightness, panel

How to choose 5.1 patchwork

Patchwork is the core decision point of splicing screen, but "the smaller the better" is a misunderstanding. The only basis for patchwork selection is the viewing distance and budget: the farther the distance, the less obvious the patchwork, and the less necessary it is to spend more money on small patchwork. The following is the industry experience reference value, specific to the actual program shall prevail:

Decision-making rules for patchwork (you can take a seat according to the number):

How to choose 173.33cm inch

Size decision rules: under the same display area, the larger the screen, the less stitching, the better the overall look and feel, but the cost of a single screen, transportation and installation difficulty rise simultaneously.55 inch is the balance point of cost performance and picture quality, is also the most mainstream choice in the market; When the effect of "one screen for the whole wall" is needed, 65/75 inch large screen should be given priority to reduce the number of stitches.

5.3 brightness, panel, resolution

• Brightness: 500cd/m is the indoor general standard; 700cd/m is used in advertising areas with windows and bright lights. Higher brightness needs customization. It is recommended to select the interval of 500-700 for monitoring 7 × 24 operation and turn on backlight derating to prolong service life.
• Panel: Industrial panel supports 7 × 24 continuous operation, longer service life, higher defect rate requirements, monitoring and command must be selected; Commercial panel is suitable for 8 hours of advertising and meetings every day. VA panel has high contrast, IPS panel has wide visual angle, and IPS is preferred in conference rooms and exhibition halls.
• Resolution: 1080P is the current mainstream; 4K is suitable for close viewing, big data visualization and high-end advertising. 8K is a forward-looking configuration, pay attention to the bandwidth of the matching processor.
• Portrait and landscape: Vertical screen is commonly used in advertising scenes, horizontal screen is used in monitoring scenes, and special-shaped splicing can be done in exhibition halls, which should be confirmed in advance during selection.

5.4 selection to avoid pit

• Patchwork is not the smaller the better: The distance is more than 5 meters, there is almost no difference between 3.5mm and 1.8mm, but the price difference may reach 20%-30%.
• 0mm is not physically seamless: 0mm is optically seamless processing. There is still a physical seam between the screens. Optical shielding is used to improve the perception. Attention should be paid to bright edges and uniformity.
• Highlight is not the higher the better: The higher the brightness, the greater the power consumption and heat generation. Indoor 500-700cd/m is enough. Blind selection of highlight will increase the failure rate.
• Large size does not necessarily replace multi-screen stitching: 75-inch single screen has no stitching but cannot open window partitions; 3 × 3 splicing can be used for multiple signals on the wall at the same time, with completely different uses.

6. the fourth step:Selection of signal and accessories-- The key to whether the system can run

The screen is only a display terminal, and whether the system can run depends on the signal and accessories. Before selecting accessories, sort out the signal source: the monitoring items include cameras, NVR and decoders; Advertising items include playback boxes, PC and cloud platforms. The meeting items include computers, screen projectors and AI cameras. After the signal type and number of channels are determined, then determine the accessory model. Don't buy a screen before thinking about the signal.

Ten kinds of core accessories one by one:

Combination of accessories for different scenes:

7. Step 5: System Architecture Design-Three Typical Solutions

7.1 Monitoring Wall-up Scheme

Topology link: camera → NVR → decoder → splicing processor → splicing screen.

Key points: the number of decoding channels must be greater than or equal to the number of monitoring channels and leave margin; Confirm that the GB28181/ONVIF protocol is compatible; The whole link is designed to run 7 × 24 hours.

7.2 advertising information release scheme

Topology link: cloud platform → play box → distributor/matrix → splicing screen.

Key points: remote release and timing switch, unified management of multiple stores, and adaptation of playback content according to vertical screen/horizontal screen.

7.3 Meeting/Exhibition Hall Interaction Scheme

Topology link: computer/screen caster/AI camera → matrix/processor → splicing screen infrared frame.

Key points: stable wireless screen projection, sensitive touch interaction, automatic camera tracking, patchwork priority 0.88mm or 0mm.

8. the sixth step:Budget, Bidding and Supplier Selection

8.1 cost composition

A complete splicing screen project budget consists of six parts, one of which is indispensable:

• Screen: The largest share of the total budget, floating by area and patchwork grade.
• AccessoriesDistributor, matrix, processor, decoder, player box, screen projection, infrared frame, AI camera.
• Installation structure: Cabinet, hydraulic support, wall mount, steel structure.
• Wire: HDMI, network cable, optical fiber, power cord.
• Installation and commissioningOn-site construction, splicing calibration, color consistency adjustment.
• Taxes, transportation and maintenance: After-sales response and spare parts during the warranty period.

Budget table template (specifications shall be filled in according to the actual project, and the following is the market reference composition ratio, subject to the supplier's quotation):

How to write 8.2 bidding parameters

• hard parameter: Patchwork, size, brightness, resolution, interface type, panel source.
• Business Requirements: warranty period, after-sales response time, proof of similar cases.
• Avoid parameter propensity: Do not write exclusive parameters that only a single brand meets to prevent bid and invalid bid.

8.3 Supplier Assessment

Evaluation dimensions: panel source (Samsung/LG/Beijing Oriental/Group, etc.), factory and testing qualification, real case, delivery capacity, after-sales response speed, spare parts supply cycle. The price is lower, spare parts for three months is scrap iron, after-sales is more important than bare price.

9. the seventh step:Installation, commissioning, acceptance, operation and maintenance

Comparison of 9.1 installation methods

Key points of 9.2 commissioning, acceptance, operation and maintenance

• DebuggingStitching calibration, color consistency adjustment, signal source configuration, processor/decoder parameter configuration.
• Acceptance criteria: Uniform patchwork, no color difference, normal signal switching, sensitive touch, 7 × 24 continuous operation without failure.
• Operations and maintenanceRemote monitoring screen status, regular cleaning, spare parts management, system firmware upgrade.

Output: acceptance form template, operation and maintenance manual. The acceptance form shall record the test results of bad points, color difference and signal screen by screen, and shall be signed and filed by both parties.

10. Common Mistakes and Pit Avoidance

11. FAQ

1. Is the monitoring splicing screen 3.5mm or 1.8mm?Look at the viewing distance and budget: more than 3 meters, budget sensitive selection 3.5mm; About 2 meters, the appearance requirement is 1.8mm high. The core of monitoring is to stabilize the wall, not the seam.
2. How bright does the advertisement splicing screen need?The indoor common area is 500cd/m, and the area facing the window and bright lights is 700cd/m highlighted.
3. 0mm and 0.88mm how to choose?The 0mm look and feel is more "full screen", but there are bright edges and cost problems. 0.88mm is physically narrow, stable and reliable. The budget is sufficient, the pursuit of extreme perception is 0mm, and the pragmatic choice is 0.88mm.
4. What is the difference between a decoder and a splice processor?The decoder is responsible for decoding the monitoring signal into a displayable picture and putting it on the wall. The processor is responsible for splicing the whole screen, opening windows, roaming and picture-in-picture. The monitoring system usually requires both.
5. Does the splicing screen need a matrix?When multi-channel signals need to be switched, the matrix is required; a simple advertising screen with only a single signal source can be used.
6. How to choose hydraulic support and cabinet?To maintain before, space is tight to choose hydraulic support; The pursuit of overall beauty, routing regular selection of cabinets.
7. How much is the splicing screen budget?Because of patchwork, size, quantity difference is very big. Reference composition: screen body 50%-60%, accessories 20%-30%, structure installation 10%-15%, subject to supplier's quotation.
8. How to write the bidding parameters?Hard parameters (patchwork, size, brightness, resolution, interface, panel source) Business requirements (quality assurance, after-sales, case) Avoid parameter tendency.
9. How long does it take to install?3 × 3 splicing usually takes 1-2 days to install and half a day to debug (industry experience value, depending on site conditions).
10. After-sales warranty general years?Industry common 1-3 years, screen body and accessories separate agreement, clear response time and spare parts supply cycle.

Twelve, summary: B2B splicing screen is a system delivery, not a single screen sale

Back to the six-step decision-making method at the beginning: scenario definition → environmental survey → core hardware → signal accessories → budget bidding → implementation of operation and maintenance. Each step has a clear output and decision-making rules, in order to complete, the program will stand.