Introduction
LED technology has revolutionized the way we interact with our surroundings and devices. From miniature indicators on electronic devices to large displays in public places, LED technology has permeated every aspect of our daily lives.The advantages of this technology, including high energy efficiency, high brightness, and long life, are why LED displays are a practical choice for a wide variety of applications.
You can find LEDs in virtually every device you use, including cars, monitors, smartphones, billboards, and TVs. If you are curious about LED displays, their types and how they work, then this article is designed for you. Here, we explore in detail everything you need to know about LED displays.
What Is LED?
LED stands for Light Emitting Diode. It is a semiconductor material that emits light when current passes through it. The name itself explains its function: “Light Emitting” refers to its ability to produce light, while “Diode” means it allows current to flow in one direction only. This single-directional current flow makes LEDs highly efficient and long-lasting, making them a preferred choice for displays and other applications.
Types of LED Displays
Rental LED Display
Rental LED displays are a reusable and portable solution that can be disassembled and reassembled easily.
It’s lightweight and slim cabinet design saves installation space. It can be customized to a variety of sizes and orientations to achieve the desired visual effect. The high-quality rental LED display adopts SMD (Surface Mount Device) 3-in-1 packaging technology, providing 160° ultra-wide viewing angle to meet the needs of viewers from different angles.
These displays are perfect for a variety of indoor and outdoor events such as concerts, weddings, music festivals, and cultural events.
Fixed LED Display
Fixed LED displays are permanently mounted and are not suitable for frequent relocation. Their cabinets are usually simple or standard waterproof models that focus on stability and weatherproofing, making them heavier duty structures.
Examples include LED billboards on highways and building facades. Fixed LED displays can be mounted in a variety of configurations, such as wall-mounted or pole-mounted, depending on the site conditions. They are commonly used for broadcasting television programs, live broadcasts, commercials, and other media content.
Indoor LED Display
Indoor LED displays are designed for indoor environments where waterproofing is not normally required.
They are known for their stunning visuals and versatile designs that are very eye-catching.
These displays are widely used in hotels, supermarkets, KTV bars, shopping centers, hospitals, and other indoor spaces.
Small Pitch LED Display
Small-pitch LED displays utilize tightly spaced LEDs, resulting in higher pixel densities.
Displays with a pitch of P2.5 or less are categorized as fine-pixel LED displays. These screens are equipped with high-performance driver ICs that provide low grayscales, high refresh rates and seamless horizontal and vertical stitching.
Small-pitch LED displays are commonly used in indoor applications such as airports, schools, transportation, gaming, and conference rooms.
Outdoor LED Display
Outdoor LED displays are designed for outdoor advertising and media applications.
They use multi-stage grayscale correction to enhance color smoothness and automatically adjust brightness for natural transitions. These displays come in a variety of shapes to blend seamlessly into the architectural environment.
Outdoor LED screens are often used to create a festive atmosphere, to promote a company’s products and to spread information in environments such as buildings, the advertising industry, parks and public spaces.
Monochrome/Dual Color LED Display
Monochrome LED displays are usually available in red, blue, white, green or purple.
They usually display simple text or patterns. On the other hand, dual-color LED displays offer more vibrant and eye-catching combinations such as yellow-green, green-red or red-yellow-blue.
These displays are commonly used to disseminate information at bus stops, traffic intersections and other public places.
Full Color LED Display
Full-color LED displays can display a wide range of colors, with each pixel capable of generating 16,777,216 different shades for vivid and lifelike visual effects.
These displays are equipped with a professional protective cover, which is waterproof and dustproof, and has a long service life.
They are widely used in office buildings, high-speed rail stations, commercial advertising, information dissemination and exhibition centers.
Transparent LED Display
Transparent LED displays, also known as grid screens, are characterized by high transparency and low power consumption.
These screens have a lower resolution but maintain clear, dynamic visuals with rich colors and detailed images, perfect for organized content playback.
Transparent LED displays are commonly used in advertising media, large shopping malls, corporate showrooms, and exhibition halls.
Creative LED Display
Creative LED Displays specializes in innovative designs that deliver stunning visual impact and artistic beauty.
Their unique shapes, such as cylindrical, spherical or cubic shapes, provide extraordinary visual effects.
Examples include LED cylindrical screens, LED balls, and LED wave screens. These displays are perfect for creating an artistic and stunning presence in a variety of environments.
LED Display Technologies
1. Edge-Lit LED (ELED)
Edge-lit LEDs have light strips placed around the edges of the display, pointing towards the center. The light shines into a light guide, which directs it evenly across the screen through a diffuser. ELEDs are cost-effective and commonly used in budget-friendly displays.
2. Direct-Lit LED
Direct-lit LED is an advanced version of ELED technology. In this case, LEDs are placed behind the display in a grid pattern to illuminate the screen uniformly. These displays are brighter and offer better contrast than ELEDs but are slightly more expensive.
3. Full-Array LED
Full-array LEDs use more LEDs than direct-lit displays, covering the entire back of the screen. These LEDs are grouped into zones that can be controlled individually, a feature known as local dimming. This allows for better brightness, contrast, and deeper blacks.
4. RGB LED
RGB stands for Red, Green, and Blue. These LEDs are used to produce colorful illuminations and are often seen in gaming and decorative applications. Each RGB LED has red, green, and blue components, and the brightness of each color can be adjusted to create various colors.
5. Organic LED (OLED)
OLEDs are different from traditional LEDs because they don’t require a backlight. Instead, each pixel emits its own light when an electric current passes through it. This results in thinner screens, infinite contrast ratios, and faster response times compared to traditional LEDs.
6. Quantum Dot LED (QLED)
QLEDs use quantum dot technology to improve color accuracy and brightness. Unlike traditional LCD-LED displays, which use a phosphorus filter, QLEDs use tiny red and green quantum dots to emit light when illuminated by a blue LED. This results in more vibrant colors and better image quality.
7. Mini-LED
Mini-LEDs use smaller and more numerous LEDs than QLEDs, allowing for more precise control over light output. These displays can be divided into more zones, resulting in better contrast and deeper blacks.
8. Micro-LED
Micro-LEDs are an upgraded version of OLEDs. Instead of organic materials, they use inorganic materials like Gallium Nitride to produce light. This makes micro-LEDs brighter and more durable.
FAQ
1. What is the difference between text display LEDs and image display LEDs?
Text display LEDs are designed to show only text, while image display LEDs can show both text and images.
2. Which type of LED display is best for video content?
Video display LEDs are ideal for showing moving images and are commonly used in modern billboards.
3. What makes OLED displays unique?
OLEDs don’t require a backlight because each pixel emits its own light, resulting in thinner screens, better contrast, and faster response times.
4. How does RGB LED produce different colors?
RGB LEDs produce colors by adjusting the brightness of their red, green, and blue components.
5. What is the advantage of full-array LED technology?
Full-array LEDs use local dimming to provide better contrast, deeper blacks, and more precise brightness control.
