LCD Splicing Screen

Decoration suggestions
According to the accumulated experience of large LCD splicing display system engineering, the decoration suggestions are as follows:

• The whole decoration style is fresh, the color is cold, simple and bright is better.
• No matter what kind of material is used to decorate the ceiling, it can be milky white, silver gray or light gray, but it should be matte colored, and the surface must not have strong reflection.
• The color of the wall decoration board is bright, with deep lines, sound-absorbing materials in appropriate parts, and the wall is mainly matte.
• The floor is better to use anti-static floor, carpet, dark color, or other non reflective floor materials.

Requirements for indoor display system

• AC grounding resistance is not more than 1 Ω.
• The fire sprinkler must be away from the liquid crystal mosaic display wall about 1 meters, can not use sprinkler fire head, spray fire extinguishing agent.
• Power requirements: The power supply of the system is AC 220V 5%; three eye socket with protective grounding wire is used; the number of sockets is related to the number of display screen, and the splicing system, splicing controller and control PC are required to supply power in the same phase. The power supply voltage should be stable and reliable, especially to prevent power on immediately after power failure. Therefore, in principle, the power supply of large screen splicing display system must be supplied by UPS with corresponding power.
• Load bearing requirements: Long term load bearing 150kg / m2.
• The installation floor shall be flat and solid with strong bearing capacity; the rack shall be directly installed on the cement floor; if it needs to be installed on the floor, it needs to be strengthened under the floor.
• As the decoration wall of splicing wall, the wall should be firm, the windows should be straight and not deformed, and the network cable of the system should be connected to the position of the large screen controller.
• Large screen room requires constant temperature and humidity. Air conditioning should be installed behind the large screen. The best working environment temperature is 18-25 degrees, and the best working humidity is less than 60%.
• The large screen room should be kept clean and dustproof to ensure the cleanness of the screen and box.
• Large screen display wall to avoid direct light, shade with curtains.
• The machine room must be cleaned up before the large screen construction.
• After the user requests the maintenance, so the channel of at least 0.6 meters should be reserved behind the TV wall. If there is a console in the monitoring room, the installation height of the TV wall should be between 1.1 m and 1.2 m.

Requirements for lighting

• 1 meter in front of the screen is a dark area, so fluorescent tubes must not be installed. Can be installed with built-in downlight, parallel to the screen, to be separately controllable on and off. The light doesn't shine directly on the screen.
• The lights in the whole hall shall be controlled in groups parallel to the screen direction, and the light source with stronger light shall not be selected. The lighting layout principle is to make the working area have enough light intensity, but it will not have obvious impact on the screen.
• The light that may enter the hall on both sides (such as windows) should have necessary shielding (such as curtains, etc.).

Requirements for air conditioning

• The air outlet of the air conditioner (central air conditioner or cabinet type open space) located in the LCD splicing display wall room should be as far away from the LCD splicing display wall as possible (about 0.4m is better), and the air outlet should never blow directly against the LCD splicing display wall, but towards the direction far away from the LCD splicing display wall, so as to avoid damage caused by uneven cold and heat.
• The air conditioner (cabinet type machine) placed in front of the LCD splicing display wall should be blown away from the screen, not vertically to the screen, so as to avoid screen condensation.
• The air outlet of the air conditioner in front of the LCD splicing display wall (on the ceiling) shall be no less than 1m away from the screen.

Differences in technology
Principles of display
LCD LCD splicing screens belong to backlight+LCD imaging, and LED displays with small spacing belong to self-illumination. The LED display screen with small spacing has no seam, and the LCD LCD splicing screen gap is 0.88-3.5mm.
Saturation of colors
The color restoration and brightness of small-spaced LED displays are higher.
Grayscale
LED display screens with small spacing are 16bits, while LCD splicing screens are 8bits.
Consumption of energy
Energy-saving LED display screens and LCD LCD splicing screens have small spacing.
Thickness difference between products
LCD splicing screens are much thicker than small-space LED displays, and small-space LED displays have reached ultra-thin designs now.
A small spacing LED display screen all-in-one machine has an ultra-narrow frame of only 3mm, and an ultra-thin structure with an overall thickness of only 38.5mm.
Difference in cost
Currently, there are three main costs. A purchase cost is the first cost, a maintenance cost is the second cost, and a service life is the third cost.
Cost of purchase
LCD splicing screens are new and more competitively priced. Costs associated with maintenance;
Costs associated with maintenance
Small spacing LED devices only need to repair the broken module separately, which does not affect use, and maintenance costs are low; LCD splicing screens: most faults cannot be repaired, and only the whole screen can be replaced;
Life expectancy
A small spacing LED display screen has a normal service life of 100000 hours, and an LCD splicing screen has a normal service life of 40000 hours.
Luminosity
Users need not worry about insufficient brightness with LCD panels and LED panels. High brightness and small spacing LED display screens, however, face the problem of high brightness. The display environment must be considered before choosing LED display screens. According to the needs of users, LCD manufacturers designed displays with brightness levels of 500cd/m2 and 700cd/m2, which make 55-layer LCD displays much more useful than LED displays.
Power resolving
In recent years, LED splicing screens have made great strides, but they still cannot compete with LCD screens. The resolution of LCD displays is generally 1920 x 1080p, and some LCD displays can already display 4K video. In order to achieve a higher resolution, it is necessary to increase the geometric base, reduce the pixel distance by 50%, and increase the base plate density by four times. In spite of bottlenecks at 1.0, 0.8, and 0.6, the real reason for a large number of applications is products like 3.0/2.5. Of course, this does not mean that clearer users cannot use it. Most users only use the splicing screen at ordinary resolution. In general, the higher the clarity, the more difficult it is to overcome this technology, and the more expensive the equipment is. As a result, many users do not choose high resolutions.
Display functions differ
Despite the fact that LED and LCD displays are mosaic screens, most of which are controlled by display controllers, their display functions are completely different. When the signal source is LED display, for example, the window can be realized by the processor roaming and multi-screen display at the same time.
In addition to supporting single-screen display signals, single-screen splicing multichannel signals, cross-screen splicing and roaming display effects, the Lot splicing screen can also be fused into a large screen display. Multiple signal sources of a single signal source can be displayed at the same time and decoding display can be achieved.
Maintenance methods differ
LCD splicing screens generally operate in post-maintenance mode – maintenance access is reserved at the back. Maintenance access must be left about 70cm to 1m wide at the back of the screen, which requires high construction space and will reduce visible space to a certain extent.
LED display all-in-one machine with full front maintenance, support hot plugging, no need to reserve maintenance channels, convenient maintenance, space saving, full front maintenance.
The environment in which the product is used varies
Since LCD splicing screens contain many electronic components, they can only be used indoors. As with all electronic products, it does not have waterproof characteristics, so it can only be used indoors in dry environments.
Because of its special structure, the small spacing LED display can be used indoors or outdoors. After adding waterproof measures, it can be used outdoors.