According to the usage purposes, LED screen walls can be divided into two types: indoor LED display screens and outdoor LED display screens.
This classification is easy for us to understand. Judging from the literal meaning, indoor LED display screens are used in indoor occasions, while outdoor LED screens are used outdoors.
However, if you need to spend a considerable amount of money to purchase or rent an LED screen wall, it is necessary to understand some basic knowledge. Because there are significant differences between them in terms of product specifications, brightness, characteristics, product processes, uses, and installation protection measures. If you are not aware of these differences, it may increase the usage cost significantly.
When you rent an LED screen wall, you may have this question: What are the differences between indoor LED display screens and outdoor LED display screens? Can indoor LED display screens be used for outdoor activities? Next, we will share the knowledge of LED screen wall rental, including the five major differences between indoor and outdoor LED display screens.
I. Differences between Indoor and Outdoor LED Display Screens：Comparison of Pixel Pitch and Resolution
LED Screen Wall Rental:Indoor LED display screens generally adopt micro-pitch technology. The pixel pitch range covers from P0.9 to P4, which is equivalent to having 64,000 to 234,568 pixel units per square meter.
Since the viewing distance is less than 10 meters, indoor LED display screens need to be matched with 4K/8K high-resolution content. For example, the P1.25 display screen in the trading hall of the Shanghai Stock Exchange can still clearly display data within a viewing distance of 3 meters.
Outdoor LED display screens, on the other hand, mainly feature a large-pitch design. The pixel pitch is mostly between P5 and P20, aiming to enable people at a greater distance to see the content. Taking the giant advertising screen in Times Square, Manhattan as an example, the P16 specification has a single-pixel diameter of 16mm at a viewing distance of 50 meters. This design is more cost-effective and avoids the "grainy" feeling when viewed from a distance.
II. Comparison of Brightness Parameters
The brightness of indoor screens is set between 500 and 1,500 nits. For example, the P2.5 display screen dedicated to conference rooms can interact with projection equipment as a dual-screen at a brightness of 1,000 nits.
Outdoor screens, on the other hand, require extremely high brightness to overcome the interference of sunlight. The brightness of outdoor screens generally reaches 5,000 to 10,000 nits, ensuring clear visibility even in the sunlight on a sunny day.
LED Screen Wall Rental:The exterior wall display screen of the Sydney Opera House in Australia adopts an 8,000-nit high-brightness solution, which can ensure accurate color rendering of the picture even when directly illuminated by the sun at noon. Moreover, some high-end products can automatically adjust the brightness according to the ambient light, which is more energy-efficient.
III. Differences in Encapsulation Processes
Mainstream encapsulation technologies for indoor screens:
COB integrated encapsulation: Products below P1.5 adopt ceramic substrate integrated encapsulation, with a low dead pixel rate.
Lamination process: The surface is coated with an anti-glare film, and the reflectance is within 1.5%.
Key processes for outdoor screens:
Surface-mounted potting: With an IP65 protection level, the thickness of the adhesive layer is 1.2mm, and it can withstand a water pressure test of 100kPa.
Double 85 aging test: It can operate continuously for 1,000 hours without any abnormalities in an environment of 85°C high temperature and 85% humidity.
IV. Functional Differences in Application Scenarios
LED Screen Wall Rental:Command center: The P1.8 display screen can perform multi-screen segmentation, support the simultaneous output of 128 channels of signals, and the screen will not freeze or delay, ensuring the smooth operation of the entire traffic system.
E-sports hall: The P2.5 curved screen provides a 270° panoramic view, with a response time of less than 1ms, enabling timely feedback during games and providing an excellent gaming experience.
Museum: The P0.9 transparent screen has a light transmittance of 60%, which can create an immersive visual space.
Typical cases of outdoor screens:
Highway: The P10 full-color screen has a 16-level gray scale display, supports a wide temperature range of -40°C to 85°C for operation, achieves excellent outdoor advertising effects, and clearly conveys brand information.
Stadium: The P12 surface-mounted screen, combined with the point-by-point correction technology, has a color difference ΔE < 1.5.
Landscape lighting: The P20 monochrome screen constructs a 10-kilometer-long lighting project along the Yangtze River, enhancing the city's image.
V. Structural Differences in Installation Systems
Indoor screen installation solutions:
Modular assembly: The P3 product supports a seam accuracy of 0.1mm, and the weight of a single module is less than 2kg.
Cantilever installation: The load-bearing structure is made of aviation aluminum alloy, and it can hang a display screen of 30 square meters.
Special designs for outdoor screens:
Pole-mounted structure: It can withstand relatively harsh outdoor environments and resist strong winds and earthquakes. The wind load of this installation structure reaches 1.5kN/㎡, and it has an earthquake resistance intensity of 8 degrees, making it less likely to tilt and cause accidents.
Intelligent cooling system: The outdoor temperature may change rapidly, such as a sudden cold wind from Siberia reducing the temperature, or the temperature rising rapidly on a sunny day. This cooling system can automatically start the fan when the temperature exceeds 55°C, ensuring the stable operation of the system.
Suggestions for Choosing LED Screen Rental
When choosing an LED display screen, follow the principle of "distance determines the pixel pitch, and the environment determines the brightness": Calculate the optimal viewing distance: The formula is D = P×3 (D is in meters, and P is the pixel pitch in millimeters); Measure the ambient illuminance: Select a low-brightness screen for indoor environments with less than 500 lux, and a high-brightness solution for outdoor environments with more than 1,000 lux. Consider future upgrades, and reserve 20% of the dot matrix space for outdoor screens to support modular upgrades.
Integrated Audio-Visual Solutions for Immersive Projection Rooms and Professional Audio Systems
At present, there are already some leading providers of overall visual solutions who are skillfully integrating traditional projectors, professional audio systems with immersive projection room services to bring customers a unique and novel visual experience.
For example, if a new 3D Hollywood movie is about to be released, the film studio needs to release a trailer to attract audiences and generate anticipation for the movie.
Then, the immersive projection room service can be used to combine the "large - screen" visual effect advantage of projection with the auditory effect of professional audio systems, stunning consumers with the visual effects of the movie and thus producing a viral - marketing - like effect.
Conclusion
Indoor and outdoor LED display screens have different application scenarios and costs. It is recommended that you cooperate with professional LED rental suppliers. Through a meticulous analysis of the above technical parameters, you can ensure that the LED display screen achieves the best balance between cost control and performance.
Although the cost of silicon-based OLED microdisplays is decreasing and the technology is constantly being updated as micro-OLED display manufacturers gradually rise, it still cannot replace the advantages of traditional LED screens. Because LED screens are the mainstream core product type of large-screen displays, as they are combined with mobile Internet, they will produce a more immersive virtual space and bring new changes to people's lives.
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