What Is a LED display, and Why Would You Want One
In our day to day life, we use LED displays in various types of digital devices. The screen of your mobile phone is one of the most commonly used LED screens for many years. In fact, the evolution of this product is based on making the rental offers more appealing. In this write-up, we are going to discuss a few things to help you to know LED displays more closely before buying one.
An introduction to LED display
In 1962, the idea of developing an LED or Light-emitting diodes came in the mind of Nick Holonyak, an American engineer. Initially what he invented was not as refined and stylish as it looks today. Earlier they were not able to display multi-colored images as they used to emit only red light. In the 1980s, a completely functional LED display came into existence which became the base of video walls used these days.
How LED screens display colorful images?
An additive model of colors, RGB, is used in making LED displays that help in making colorful images as these three primary colors, Red, Green and Blue, help in displaying a wide range of hues on the screen. The light from light-emitting diodes is added to this color model for this purpose. The intensity of light from LEDs is measured in pixels and one pixel light is emitted by three diodes.
How LED displays are efficient to save power?
Actually, an LED display exhibits images with the help of a number of pixels combined together. These pixels consume very low power but emit light of high intensity which helps in saving your power bills more efficiently. For this reason, LEDs are regularly used these days in video walls and TVs.
What you should know while buying a LED display?
While buying an LED display, either a mobile screen or a modular video wall, there are certain things you must keep in your mind like:
Illuminate your event: While buying an LED screen you must check its brightness as you may not be able to display your event without light. It is important because while using your display screen you may have to work in various types of lighting conditions. A brighter display screen is more valuable as you can adjust its brightness if you are using it in a darker environment but if its light is dim then you may not be able to show your event in broad daylight.
Determine the clarity of the image with pixel pitch: The pixel pitch of your LED display tells you about the distance between the centers of two adjacent pixels. It can also tell you about the density and resolution of the pixel and according to the size of your screen. So while planning to buy a new LED screen it is important to consider these aspects. You can get a sharper image on the screen from a higher distance if its pixel pitch is higher.
Speed of refresh rate: The refresh rate of your LED screen shows the speed of displaying data per second. Normally it is misunderstood as the frame rate of the video but it is different from it. If the refresh rate of a screen is 48 Hz then the frame rate of that video can be 24 fps which means that an LED screen will display a frame two times in the same time period. Generally, 400 Hz is the minimum refresh rate of an LED display. You must opt for a display with a minimum 1000Hz to display flicker free beautiful images on your screen.
Difference between SMD and DIP: Though the job of SMD and DIP technologies is similar but they are different in design principles. DIP technology works of thee LEDs with different colors whereas SMD includes a die with three colors to create a diode flawlessly. DIP is a cost-effective technology as it can be manufactured more easily than SMD but due to its compact formation, you can add more pixels to your display and get higher resolution by using SMD.
IP rating: To determine the sealing of LED display from all types of conditions that can damage the device while using, IP rating of the screen is considered. It ensures the resistance of your screen to dust and rain so that they can be used outdoors without damaging its delicate components. The digits of IP code can help you to determine the level of protection of your screen.
How does LED display work?
Actually, an LED display is an LCD screen in which LEDs are used as a source of light instead of CCFLs. LED screens are thinner than LCD screens as they are smaller in size and more energy efficient. However, there is almost no difference in the quality of the picture on the LCD screen and LED screen as they have changed the backlight only.
An LED TV includes 3 s
mall colorful LEDs per pixel without having a panel of LCD. Though they can improve the quality of images by increasing the number of pixels but it can also increase the cost of manufacturing the TV.
Today TV screens have LED backlights in mainly three configurations including:
Full array: It is considered the best type of LED backlight but it is found in limited models. In LED display screens with Full Array configuration, LEDs are evenly distributed behind the whole screen. It helps in using local dimming more effectively along with producing backlight more uniformly without changing the luminosity of the entire screen.
To create a greater range of colors to match the color of the picture to that of diodes, these days many TV manufacturers are using colored LEDs instead of white LEDs. But you may not find any difference in these pictures.
Edge-lit: LED display with this configuration can be found in most of the LED TVs these days. In these screens, LEDs are placed on their periphery, on their bottom, sides, or all around them. These screens are very thin in size but some of their spots will be brighter than the entire screen. You can notice this problem while watching a dark picture in a dark environment. This problem is known as clouding or flash-lighting.
Direct-lit: The LED displays with this configuration are usually found in low class LED TVs. Though it is similar to the screens with full array configuration still it is different from it because the luminosity of their picture cannot be controlled easily. The space required to add LEDs behind the screen to diffuse light throughout the screen increases their size than other LED screens.
The amount of power used by an LED display
The technology used in LED displays is highly energy efficient. So today LED bulbs are widely used everywhere to save energy. The amount of power used in an LED display depends upon the brightness, length of usage, and type of the display.
The consumption of power in indoor displays can be different from outdoor displays because different types of LEDs are used in them. The brightness of LEDs used in outdoor displays is higher as they have to be seen more directly in sunlight than after falling of darkness. It will help you to see the images more clearly without dazzling the light of the display. So, outdoor displays will consume more power than indoor LED displays.
The consumption of power in an LED display can also depend on the type of images displayed on it. You will have to adjust the brightness of the colors of the diodes while displaying any image on an LED display. Your display will consume more power if you have to illuminate more diodes to display a white image with black text as compared to display a black image with white text.
The lifespan of an LED display
It is not possible to predict the lifespan of an LED display as it depends on various factors still you can use your LED screen for over ten years by maintaining it properly. Like all other electronic devices, the environmental conditions around the display and the frequency of its usage can affect its lifespan. The life of your display can be affected more easily by displaying bright images with a high level of brightness than displaying dark images with low brightness levels.
The amount of salinity and humidity in the environment can also play a great role in determining the life of your Led display.
Moreover, the output of light from the diodes also reduces during the lifetime of an LED display. But the speed of reducing this light can depend upon the generation and type of the diodes used in it. This problem of reducing the light of diodes can be controlled by not using the light on LED displays at full intensity.
Thus, by following the information provided in this write-up you can buy the best LED display for you. It will also allow you to use your LED screen more efficiently for a long time by taking some careful steps as discussed here above.
