Simon Lan
LED screens will play a vital role in the digital era, with vast potential in various industries. We'll innovate and optimize our LED screen solutions, expand application areas, invest in R&D, and provide clients with better visual solutions, dedicating ourselves to driving healthy industry development and creating business value. We believe in the bright and promising future of the LED screen industry through cooperation and joint efforts.
Indoor LED screens are generally smaller than their outdoor counterparts but usually have a smaller pixel pitch due to the fact they are viewed from a closer distance. That’s not to say that they have any limitations on the size as they can also be made to any size required. Over the last few years, developments in technology mean that indoor LED displays can be used in far more applications, and they are now used as replacements for conventional TVs. Outdoor LED displays are most often used as advertising billboards but can also be seen in applications such as LED scoreboards or pitch side perimeter advertising. They need special protection from weather elements, and this level of security is referred to as the IP rating. Outdoor LED screens also have a shade that is situated above each pixel to stop direct sunlight from shining onto the screen and diluting the light that is emitted.
LED Pixel pitch is the distance between each pixel within an LED screen. A pixel pitch of 1mm means the space from one pixel to the next is 1mm. Some displays have a horizontal pitch and also a vertical pitch, so the vertical could be 5mm while the horizontal could be 10mm. The closer the pixel pitch, the higher the resolution, and as a result, the higher the cost of the LED display. Some manufacturers offer solutions called virtual pixel pitch. This is not something we would recommend as it basically adds another red, green, blue, or even white LED into the segment, which results in a loss of contrast due to less black space between the LEDs. Another con to virtual pixel displays is the fact that often manufacturers will use an additional LED which uses more power and so the brightness settings will be set lower, over time the other colours will see more degradation than the lower brightness LED, and the screen will require calibration to equal this out.
If you only anticipate having an amazing view from your TV, then pixel pitch is the factor that you should consider the most. This means that the smaller the pitch of the pixels, the greater will be the pixel density, and hence, better will be the image quality. For indoor TVs, you can consider one with a low pixel pitch so that you can have the best picture quality.
LED screen brightness is normally measured in nits per m2 and can vary depending on pixel pitch and whether the LED display will be used indoor or outdoor. Indoor LED displays have a brightness range of 500 nits to 3,000 nits, whereas outdoor LED screens are normally rated from 4,000 nits anywhere up to 12,000 nits or more. LED brightness can be one of the factors to consider when buying an LED screen. For instance, if an LED screen is to be situated in a bright window, a standard indoor brightness display will not be suitable when direct sunlight hits the display.
Different LED TV screens have a variety of brightness. Before picking the one, consider the NIT rating of the TV. NIT will let you know about the brightness of the display screen and will also guide you upon which one you should buy.
If you are planning to buy one for indoor, keep the brightness between 500 to 2,500 NITS. If the value increases, it won’t be suitable for an indoor television. Resolution is determined by the number of pixels within an LED display and choosing the required resolution often depends on what content is going to be shown as well as the size of the display. For instance, if you are installing an LED screen into a control room environment where intricate content will be shown, then a high resolution will be needed, but sometimes a low resolution is acceptable. An example of this could be LED signs that will show traffic information such as stop signs or scoreboards at sports stadiums.
There is no denying the fact that LED display’s come in various sizes and shapes. Each size will have different resolution technology. People usually consider buying either a 720p ready HD screen or a 1080p full HD screen.
When it comes to choosing a LED TV screen, people usually consider buying either a 720p ready HD screen or a 1080p full HD screen. However, as per the user experience, the latter would be better for an LED TV as it provides a detailed resolution and also enhances the picture quality. Buying 720-pixel size would be futile if you are considering a high definition screen panel, lit by numerous small LEDs.
Reading the specifications sheet for an LED display can sometimes be a very daunting task. With segments such as scan rate, refresh rate, pixel density, etc., things can get a little confusing. To help you understand what each of these factors means, we have put together the following to help buyers understand the terms used on most technical sheets.
As we covered earlier, the pixel pitch is the distance between each pixel. The closer the pixels, the higher the resolution, and the more clear the picture will appear. Currently, the lowest pixel pitch is around 0.6mm, although these displays are not currently live in the field. Outdoor LED displays could vary and can even exceed 100mm.
This is how the LED is packaged, the size of the LED, and also the kind such as DIP, SMD, or COB. An example would be SMD 2020 1R 1G 1B, which means the spec is for a surface mount device, 20mm x 20mm pixel containing one red, one green, and one blue LED.
LED Display brightness is usually measured in nits over a meter squared (cd/m2) and can vary enormously depending on the type of LED used and whether it will be used for indoor or outdoor applications. As a rule of thumb, indoor LED displays will have a brightness of 500 nits to 3,000 nits, and outdoor LED displays will start at around 4,000, and depending on the type of display, they can reach over 12,000.
Pixel density is the number of pixels in any given area. A pixel is normally made up of a red, green, and blue LED in a full-colour solution, but can also be one individual pixel in mono colour for instance. pixel density is usually measured in pixels per meter square so for instance, a 2.5mm pixel pitch will have a pixel density of 400 x 400 and be 160,000 per m2.
LED refresh rate is the number of times the display changes frames or, in other words, the image that is displayed. Most LED displays are above 240hz, but in configuration settings, we can adjust these numbers depending on how the display will be used. To do this, we can sacrifice other settings such as colour range. For some settings, however, such as when the display will be filmed with a camera, it is essential to adopt a high refresh rate. We usually recommend at least 1920hz for these scenarios.
One of the biggest benefits of LED displays is the extremely high levels of contrast that are available. Contrast is the difference between the white and black images that the screen is able to show. The larger the difference in contrast, the better the picture quality, especially when watching darker content on the screen.
LED display viewing angle is far superior to nearly all of its competition due to the fact that the light creating the image emits directly off of the surface as opposed to sting through it or onto it like other solutions such as LCD or projection. Most LED screens have a viewing angle of at least 100º but vary both horizontally and vertically and can reach up to 170º.
LED greyscale is basically what it sounds like. It is the number of levels, on a scale that an LED display can show between shades of color. There are 256 levels of intensity, and so the highest possible greyscale is calculated at 24 bits, whereas the lowest amount would be 1 bit or two colors such as black and white.
The scan rate is how many lines of the LED module the chip will change at any given time. The scan rate will usually be considered alongside the refresh rate, and we usually specify our LED displays scan rate depending on their environments. For instance, in a hot outdoor location, we prefer to use a lower scan rate so that the LED chips are not working so hard and have a longer lifetime.
LED life span indicates the expected lifetime of usage for an LED Display. This is usually 100,000 hours of use or 11 and a half years, which is quite a significant amount of time. Even when there are failures within an LED display, the modular nature means that all is required to fix the display is to simply replace the component that has failed, such as a receiver card or PSU.
It is the quality of these LED-operated devices that distinguish them from the rest and makes them the favourite electronic appliances to possess. What normally is a 5000-hour life guarantee of an LED light is often reduced drastically if the quality is not up to the mark. As consumers, it becomes your responsibility to be aware of the essential difference between high-quality and low-quality LED lights so that you can get the maximum worth for your bucks.
Thereby, here are some outlined points that can help you understand the difference between high quality and low quality LED lights, in order to make a more informed purchase decision:
First comes first, it is very important to look at how well constructed the whole LED light is. One must check the design, look at the strength and the feel while choosing an appropriate light. An indicator of low quality would be careless and quick powder coating on the light, or cheap looking LED modules, which would also mean a cheaper inner construction. You should keep these things in mind while making the purchase.
LEDs are semiconductors that are driven by constant current DC supplies for longer life. In case of low-quality LED products, they are usually accompanied by low-quality components and low life capacitors, which will almost certainly reduce the life and make the display unreliable. Things to look out for are CE certification, which most of the low-quality supplies do not have. Here at Dynamo, we prefer to use Meanwell power supplies, which are very high quality with CE certification.
Although this sounds odd, it is true that a high quality LED light will weigh more than a low-quality one, mainly because of the good amount of aluminium for heat dispassion. Lights that feel like plastic cannot perform well, even when the time period is short.
Since LED lights have become integral parts of interior design, many people do not know how to distinguish between lights according to their purpose. Many cheap quality lights have the same optics for most of the LED lights, which basically means that a spot light’s range will be the same as the one used in the hall. One should also not opt for lights with opaque covers, as they hide the cheap components in an LED light.
There are suppliers worldwide for LED chips, one of the main components in LED displays. The larger the chip, the better the quality, light, and stability. However, they are also more expensive than the small and inexpensive LED chips that come with less light and stability. It is all a matter of the materials used in making the chip. Macroblock is one of our favourite manufacturers, but there are many variations that takes somebody with expert knowledge to specify the correct chips for the specific application.
Keeping these factors in mind, there is quite a bit that goes into the making of the quality of an LED light. Next time you see an LED display, cross-check these points with yourself and the LED appliance you want to buy. Once checked thoroughly, only then make the final purchase.
LED screens can be mounted in various ways. Some screens can be fixed directly to walls, whereas some displays require that special frames are built to accommodate the LED cabinets. Many companies are now starting to produce mounting solutions that fit multiple manufacturers’ LED cabinets. One of the most important things to consider when selecting an LED mounting solution is how to maintenance will be carried out if necessary. Most LED cabinets these days allow for both front and back maintenance of all the components.
LED screens are usually built in batches, which means the LEDs are supplied calibrated from the factory and ensures that the levels of brightness, contrast, and the colours of the LEDs are all equal. Calibration using the kind of expensive camera equipment that Dynamo LED has invested in can also give that extra bit of quality, which is why all of our screens have that added bit of “Wow Factor.”