Indoor And Outdoor LED Display(s): How Are They Different?


LED displays are versatile communication tools. Businesses speak to their clients via these amazing LED billboards and screens. These displays also serve educational and awareness-building objectives. The outdoor screen displays are often used as highway billboards, in stadiums and during outdoor celebrations, while indoor LED screens are widely used inside places of worship, offices, conference halls, restaurants, malls and retail outlets. Other applications of LED displays are in retail, transportation, sports arenas, corporate campuses, institutions of higher education, at gaming hubs and casinos.


Indoor LED display screens also provide seamless displays that are ideal for ambient lighting and shorter viewing distances. LED video walls make the indoor environment more interesting by delivering a spectacular viewing experience—in retail stores, corporate lobbies, etc.


Besides typical indoor and outdoor LED display screens, there are also semi-outdoor screens. These are seen in open halls, under eaves, sometimes beneath sun roofs or even under an outdoor canopy. However, despite giving the same ultra-high brightness as outdoor LED displays, these semi-outdoor screens are not resistant to adverse weather conditions.


Differences between indoor and outdoor LEDs


Outdoor LED screens are mostly used at venues where a mega show is on—for brand advertisements, for instance, as they can offer full colour and very high brightness. Indoor LED screens, on the other hand, cannot address the needs of mega outdoor display projects but are ideal for indoor applications. They offer better spectrophotometric colour. Besides this, they also provide high colour saturation.


The factors that differentiate outdoor and indoor LED displays are explored in this article.


Brightness


This is undoubtedly one of the striking differences between indoor and outdoor LED display screens. Bright sunlight can make it difficult to read dull or less bright LED signs. Thus, to provide ultra-high brightness, outdoor LED display screens are power-packed with many bright LEDs in one pixel. Since indoor signs are not viewed under the harsh glare of the sun, they need to be less bright, by default. Outdoor displays offer several times more brightness than indoor LED screens. Brightness is measured by units called nits or candelas per square metre. The higher the luminosity level, the higher the level of brightness.


Resilience to external weather conditions


Outdoor LED display screens should be highly leak-proof, waterproof, dust-proof, readable in sunlight, anti-lightning and resistant to high temperatures. Indoor LED display screens do not need to offer the same resistance to the outside environment and hence do not come with such features. The outdoor LED screens normally have IP65 water-proof levels while indoor screens have IP20 waterproof levels.


Display resolution


Outdoor LED screen displays will be typically viewed from further distances as compared to their indoor counterparts, thus they have a lower resolution. Since the distance between the viewer and an indoor LED screen is shorter, typically, the resolution for indoor LED displays needs to be high. The greater the resolution the better the picture quality. The pixel pitch, which describes the density of the pixels on an LED display, is another differentiating factor between indoor and outdoor display screens. Outdoor displays have a larger pixel pitch and a lower resolution, whereas indoor displays that need a high resolution for close viewing have a smaller pixel pitch.


Points to remember while choosing LED moving displays


Indoor LED screen displays can be designed in several ways, depending upon the configuration and architectural needs. This is because they don’t require a cabinet for installation. On the other hand, outdoor LED signs cannot be assembled panel by panel on the site. The entire installation is based on the design (as a sign or billboard) or is placed on a building.


The type of LED display chosen should depend on whether it will be positioned indoors or outdoors. Then factor in the size of the placement area or installation site, check if there is a remote control requirement via a PC, and find out the minimum or least viewing distance. The default design of indoor LED display screens is for easy and rapid integration with several input resources and third-party players. However, outdoor LED screen displays need a rugged regulator or controller for playback purposes. They are normally regulated via a copyrighted software suite, which also provides remote access along with sign diagnostics.


Screens with higher brightness are costly and consume more electrical power. Hence, it is important to choose a screen with the right brightness for your needs, so that you don’t pay more for something that is not necessary. Non-weatherproof small pitch LED screen uses LEDs with lower light output, but water-resistant outdoor LED screens need to use brighter LEDs.


Growth in the outdoor LED display market


The outdoor LED display market is expected to boom by 2021.


All outdoor LED displays offer the primary features of energy efficiency and durability. Governments across the globe, like in India, China, Malaysia and the GCC (Gulf Cooperation Council) countries, are encouraging energy conservation measures. LED displays to reduce power consumption considerably. These countries are also formulating regulatory policies for a flourishing LED industry.


Modern multiplexes and shopping malls incorporate LED displays as an integral part of their overall design. Outdoor LED displays that deliver dynamic and audio-backed content are more attention-grabbing. Businesses invest heavily in LED displays to grab the maximum attention of their customers. The huge screens that show flashy images along with thunderous sounds never fail to catch the attention of visitors in a mall.


Real-time advertising has further increased the demand for outdoor LED screens. The advertisers carefully monitor their clients’ choices, the market trends as well as consumer responses to the messages displayed and can alter the content accordingly.


Indoor applications of video walls are diverse, as can be seen in transportation (airports, bus terminals, subways, etc), which was an early adopter. However, there’s been increased adoption of these walls at shopping malls and other retailers, hotels, casinos, museums and galleries.


Robust high brightness outdoor LED walls are designed to convey information in a visually appealing manner even in tough outdoor conditions like extreme heat, rain and dust. Unlike other conventional displays, these video walls are highly customisable in shape and size and provide daytime visibility even under direct sunlight.


Indoor And Outdoor LED Display(s): How Are They Different?



Outdoor LED billboard, screens and other products are getting more popular by the day. LED displays have become an important part of the way modern businesses communicate with their customers. Their high brightness, low power consumption, and longer shelf life are just some of the characteristics that give them an edge over the earlier LCD screens. Indoor LED displays, however, are different from outdoor displays in a number of ways.


What are the main 3D technologies for 3D LED displays?


The 3D LED display can express the details of dark and light parts incisively and vividly. It is characterized by high refresh, high gray scale and high contrast, so that the audience can enjoy the content with the immersive experience effect of scenery but no screen in their eyes.


3D LED display is a kind of 3D effect on the screen that can be viewed with naked eyes without wearing professional glasses. The effect presented by the naked eye 3D LED display is very realistic, which can perfectly display the broadcast content and attract the eyes of pedestrians.


As a brilliant LED display in the display market in recent years, with its more and more into the indoor high-definition display field, how to achieve the 3D display technology suitable for LED display has also begun to attract much attention.


So, do you know what are the main 3D technologies for 3D LED displays?


1. 3D display technology of glasses:Glass 3D technology, we can subdivide into three main types: chromatic aberration, polarized light and active shutter, which is commonly known as color division, light division and time division method.


2. Color difference 3D technology: Passive red-blue filter 3D glasses are used together.


The technology is the oldest, the imaging principle is simple, and the cost of implementation is relatively low -- the glasses cost only a few dollars -- but the 3D results are also among the worst.


3. Polarized 3D technology: Also called Polarized 3D technology, it uses passive polarized glasses.


Polarized light type 3 d is the use of light have "vibration" principle to decompose the original image, first through the level of the image is divided into vertical polarized light and polarized light images in both groups, and then about 3 d glasses with different polarization direction of the polarized lenses, so that people around the eyes can receive two sets of pictures, after brain synthetic stereo images.


4. Shutter-type 3D technology: This 3D technology is most widely used in TV and projector, with relatively more resources and excellent image effect. It is highly praised and adopted by many manufacturers, but its matching 3D glasses are relatively expensive.


At present, including LG, Samsung, Panasonic, Skyworth and other brands launched 3D TV, using active shutter 3D technology.


The unique 3D LED display mode creates a sense of spatial dimension. Combined with the stage lighting, it creates an immersive lighting and movie feast, which brings a strong visual impact to the audience.


In addition, in recent years, the demand for artistic performance has been on the rise, and the future prospects of the immersive visual performance stage are very bright.






1. What is LED module?
LED module is a basic unit of led display, which has complete drive circuit and certain appearance.


Outdoor LED module


2. LED module classification.


a.Classifying from the application environment, there are two types led modules. One is indoor LED module and another one is outdoor LED module. The latter module must be water-proof.
b.LED module can also be classified from its color, such as single color led module, tricolor LED module and full color led module.
c.According to the type of LED, the LED module can be classified into DIP LED module and SMD LED module.


3. The composition of LED module.


The LED module is consisted of the following parts & components:
a.LED


b.IC. Generally the driving IC model we used include,


ⅰ.Macroblock MBI5020, Macroblock MBI5024;
  ⅱ.Macroblock high refresh rate MBI5042, MBI5050;  
  ⅲ.Macroblock energy saving MBI5035;
  ⅳ.Macroblock error detection MBI5036;
  ⅴ.Toshiba TB62726;
  ⅵ.Philip 74HCXXX;
  ⅶ.ANPEC4953.


c.PCB. There are so many kinds of PCB in the market, such as single layer board, double layers board and four layers board etc. And the PCB we adopt to our led display modules: FR-4; 1.6mm thickness; Copper foil thickness 35(1oz), SMOBC&HAL, black or green surface painting.


d.Signal connector. There are three types as following,
 ⅰ. Contact pin. It has price advantage, low cost.


We use only the best type connector to ensure the stability of our led displays. And if there's no special requirement, the power connector we use is VH4 to give the great convenience of the maintenance to the led displays.


e.Module kit.
 ⅰ. Bottom case. It is just like a carrier of the LED screen module, the whole LED PCB will be put in it. It seems like a container when the LED module is used to outdoor environment, since the waterproof silicon glue will be poured into it and seal around the LED to realize waterproof.
It is LED's basic structure and whether there is cabinet or not the LED module will be installed on the cabinet or frame through it. The bottom case also can protect the LED from damage when under the working state.
 ⅱ. Mask. There are three kinds of mask in the market.
  1）Conventional hard plastic cement mask.
  2）Soft mask. It is usually for sport perimeter led display usage. Considering the athletes' safety and the intactness of the LED display, at the first layer of the LED display the PC mask will be used and then the soft mask will be attached on the surface.
  3) Silica gel mask. It is mainly used to the smaller pixel pitch LED display and can be pasted on the LED PCB with 3M glue.


f. Resistor and capacitor.
ⅰ. Resistor model: 0603, 0805, 1206 etc.
ⅱ.Capacitor types: electrolytic capacitor, SMD ceramic capacitor.
We use high precision resistor to ensure the color of LED display to be disposable, and to make our products more reliable.