What is a full-array LED, what are its advantages, and what are the differences with other backlighting technologies, let us understand one by one!
What is full-array LED
Full Array LED is a panel lit by LEDs displayed behind the display. The LEDs in it are all mounted around the perimeter of the display, so the backlight is distributed more evenly.
In simple terms, each LED is a small white light that we can turn on and off freely like a spotlight on a stage.
Due to the smaller size of the full array LEDs, there is more control and freedom over the brightness, color accuracy, and dimming areas of the display, making it smoother and more fun to watch movies or play games.
History of Full-Array LEDs
In the past, watching movies on a screen was not a great experience, and edge lighting ruled the early LED market. They were thin, inexpensive, and had obvious problems.
A bright halo would appear in the depths of the edges, whereas the edges of a normal and perfect LCD screen should be deep and dark.
The color also does not reach enough bit depth, the picture on the screen looks like using a flashlight from the side of the light, thus bringing the experience will feel very poor.
Therefore, engineers began to look for a display that did not rely on incident light from the side and had consistent edge illumination. After tireless efforts, they invented a method that allows each part of the display to have its own light source;
The method is to move the LEDs to the back of the screen and place them in a grid so that there is equal clearance between each LED. In this invented method, the first full array LEDs were born.
As this technology has continued to advance over the years, limits have been pushed, dimming areas have become smarter, LED groups have become larger, and HDR technology has entered the picture with more accuracy than ever before.
Today LEDs are the foundation of modern high-performance screens, and full-array LEDs have become the best LED spotlights, changing the way we enjoy movies, games, and works of art.
How Full Array LEDs Work
Precision is at the heart of Full Array LED technology. The new technology places the LEDs at the back of the screen in a carefully planned grid, and unlike past backlighting methods, these LEDs act as a single light source to ensure that the entire display glows properly.
These zones divide the grid into equally proportioned sections, each of which can change its own color. In darker areas, the rear LEDs can dim and improve the black level. This fine control allows for higher contrast and clarity, which can make the picture look more realistic.
The process of creating light with LEDs is also very simple. LEDs utilize the semiconductor characteristics of electricity to produce light. Unlike conventional lights, where most of the energy is converted to heat, LEDs are designed to be more efficient, emit light at a more precise rate, and save power.
LEDs utilize semiconductors to produce light. When current is passed through the semiconductor, electrons come in the form of light to release photons. LEDs provide a consistent and controlled amount of light so that there is not a lot of waste. The efficiency of LEDs is the result of intelligent engineering, powering the chips that power them to heat dissipation methods that allow them to run smoothly.
Advantages of Full Array LEDs
- Localized dimming areas: Full array LEDs use localized dimming technology that allows certain parts of the screen to be dimmed or brightened at the same time, while other parts remain at the same level, achieving better contrast. Full-array LEDs can also adjust darker portions of the area to maintain the brightness of brighter areas, thus adding depth and brightness to colors.
- Uniform Brightness: Full-array LEDs ensure the same amount of light in every corner of the screen by arranging them in a grid pattern at the back of the screen. Whether you’re watching a movie or enjoying a work of art, the light level remains the same across the entire screen.
- Precise Lighting Control: Fine details in shadows are difficult to obtain when the screen is side-lit, and edge-fixed lighting is not sharp enough to show features with fine variations in detail. However, this problem is perfectly solved by the precise lighting control of full-array LEDs, which can be individually changed to match the brightness of each LED. To a certain extent the full-array LED for each LED matched with different lighting experts, whether it is a soft light or dazzling light, can be captured in each moment there is a precise control of the way, so that the audience to feel the gentle and appropriate lighting effects, so as to alleviate eye fatigue.
- Color accuracy: Before the appearance of full-array LEDs, past displays may not be able to obtain the corresponding color in some scenes, such as outdoors when the bright red and dark blue look the same. However, the arrival of the new feature of full-array LEDs directly makes the overly bright light source more stable, a feature that is very important for displays. This is especially important for professionals and content creators whose work depends on accurate color.
- Durability: Full Array LED screens are very durable and will not burn out, and can display dynamic images for a long time, even with frequent use of Full Array LED displays, it will not reduce its lifespan too quickly.
- Low cost: there are some products, just on the basis of the full-array LED function to increase the improvement of a little bit to be marked with an expensive price, so people want to buy full-array LED display can ignore this improvement, because it is similar to the function of the full-array LED, full-array LED appears to be more affordable.
Disadvantages of full-array LEDs
- Limited black performance: Full-array LEDs are not yet able to provide perfect black levels, which means that they do not provide more realistic shadows and depth in low-light scenes.
- Limited vision: Even though full-array LEDs have accurate colors, they still don’t do a good enough job in terms of color depth and richness, and visually, full-array LEDs lose some color vibrancy.
- Halo problem:Sometimes excessive light emitted in bright places will spill over into dark areas of the screen, causing bright places to appear very bright when they shouldn’t be illuminated, making shadows look faded.
Comparison of full-array LEDs with other backlighting technologies
Traditional side-lit LED backlighting presents a conflict between deep blacks and bright highlights. An array of LEDs must attempt to balance the light across the entire picture, or it will not be too dark in the dark areas and not too bright in the light areas, leading to a situation where more halos may appear.
Side-illuminated LEDs make it possible to achieve an ultra-thin display by placing LEDs around the edges, making them ideal for wall-mounted installations or minimalist setups where appearance is important. Side-illuminated LEDs are less expensive to manufacture than full-array LEDs.
Straight down LED’s focus on simplicity and functionality, it does not use a local dimming area, it is set up directly below the LED grid, similar to the array of light sources. This design reduces manufacturing costs while still providing a brighter display than the side-lit type.
This simplicity LED also has some limitations; straight down LEDs cannot achieve the contrast of full array LEDs because it lacks local dimming. As a result, blacks will appear gray and darker areas will also lack the necessary detail. Additionally, the bulky look of straight-down LEDs may not be compatible with modern aesthetics.
In short, full-array displays are more efficient and provide a high-quality viewing experience. With deeper blacks and sharper contrast, full-array LEDs are the best choice for both home theater and business monitors.
Application Scenarios for Full Array LEDs
Monitors
Full-array displays use a dual system to reduce electrical losses and increase light output. Full-array LED displays achieve color accuracy by creating a uniform distribution and maintain uniform brightness levels across the entire screen, meaning it looks consistent from any angle. Therefore, full-array LED displays can achieve better color accuracy and a vivid and realistic visual experience in a large room or when several people are watching from different angles.
TV
As TV manufacturers continue to launch new LED TVs. Full-array LED TVs use LED panels evenly distributed throughout the back of the TV screen, full-array LEDs and local dimming area, they can produce a very bright and vivid images, excellent contrast can also be better control of the brightness level of the entire TV, to achieve the TV image between the bright areas and the dark areas of the contrast between the excellent, to achieve a true sense of immersion.
Lighting system
Full-array LED lighting system is the best lighting system before the advent of OLED, but OLED will appear to burn the phenomenon of the screen, but not LED. The more LEDs on the back of a full-array LED screen, the better and more precise its lighting system is. The more bulbs a full array LED has to illuminate the screen, the more precise it will be when turning the lights on and off.
Summary
Full-array LED improves the shortcomings of the previous edge-type LED and straight-down LED, so that the monitor’s screen to achieve a better display effect, and has now become the mainstream backlighting of the display lighting method.
