If You Want to Work in the LED Electronic Screen Industry, This Is a Must-Know Guide
Release date: 2017-12-01
Source: LED Network
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If you're stepping into the LED electronic screen industry, it's essential to understand the key terminology that defines this field. From basic components like pixels and dot pitch to more advanced concepts like SMD and DIP packaging, knowing these terms can help you navigate the industry with confidence. Whether you're a beginner or looking to deepen your knowledge, here’s a comprehensive guide to some of the most important terms used in LED screens.
(1) What is a Pixel? What is Pixel Diameter? And What is Dot Pitch?
A pixel is the smallest unit of illumination on an LED electronic screen that can be individually controlled. Each pixel consists of one or more LEDs that light up to form an image. The pixel diameter refers to the physical size of each individual LED, measured in millimeters. The dot pitch, also known as pixel pitch, is the distance between the centers of two adjacent pixels. The smaller the dot pitch, the higher the resolution and the better the image quality, but also the higher the cost.
(2) What is an LED Display Module?
An LED display module is a group of pixels arranged in a fixed pattern, forming a self-contained unit. These modules are often used to build larger LED screens by connecting them together. They serve as the building blocks for both indoor and outdoor displays.
(3) What is a Cell Board?
A cell board is the core component of an LED screen, consisting of the light-emitting elements and the driving circuitry. It is typically used in indoor LED displays and plays a crucial role in ensuring the screen functions properly.
(4) What is a Module?
A module is a pre-assembled unit made by packaging multiple LEDs into a single housing. These modules are commonly used in outdoor LED screens due to their durability and ease of installation.
(5) What is a Unit Box?
A unit box is a larger assembly made up of several cell boards connected in a specific order. It is widely used in large-scale outdoor LED screens, providing structural support and easier maintenance.
(6) What is DIP?
DIP stands for Dual In-line Package. It refers to a traditional method of mounting LEDs onto a PCB (Printed Circuit Board), where the LED leads pass through the board and are soldered from the back. DIP is commonly used in indoor full-color LED screens.
(7) What is SMD?
SMD stands for Surface Mount Device. Unlike DIP, SMD LEDs are mounted directly onto the surface of the PCB without requiring holes. This allows for higher pixel density, better brightness, and improved image quality, making it ideal for indoor applications.
(8) What is a Plug-in Module?
A plug-in module is one where the DIP package LEDs are inserted into the PCB and soldered from the bottom. This method provides high brightness and good heat dissipation but has lower pixel density compared to SMD.
(9) What is a Surface Mount Module?
A surface mount module uses SMT (Surface Mount Technology) to attach LEDs directly to the PCB surface. This results in a smoother, more uniform display with higher pixel density, but may have lower brightness and less efficient heat dissipation.
(10) What is a Sub-surface Module?
A sub-surface module is a hybrid technology that combines features of both DIP and SMD. It offers high brightness and good display quality, but the manufacturing process is more complex and maintenance can be challenging.
(11) What is Three-in-One?
Three-in-one refers to a type of SMD module where red, green, and blue LEDs are stacked vertically. This configuration improves color accuracy and image quality but comes at a higher cost and requires more precise manufacturing.
(12) What is the Difference Between Indoor Modules and Patch Full Color Screens?
Indoor modules are generally less expensive and use yellow-green LEDs, while patch full color screens use pure green LEDs for better consistency and brightness. Patch screens are also easier to maintain and repair, as individual LEDs can be replaced without replacing entire modules.
(13) What is a Real Pixel?
A real pixel means that every physical pixel on the screen corresponds directly to one displayed pixel. This ensures accurate image representation without any distortion or loss of detail.
(14) What is a Virtual Pixel?
A virtual pixel is a technique where the number of actual pixels is less than the number of displayed pixels. This allows for higher resolution images without increasing the physical size of the screen, though it may affect image clarity at close distances.
(15) What is Viewing Angle?
The viewing angle is the maximum angle at which a viewer can still see the image clearly. It is divided into horizontal and vertical angles, and a wider angle allows for better visibility from different positions.
(16) What is Brightness?
Brightness refers to the amount of light emitted by the screen, measured in nits. Higher brightness makes the screen more visible in bright environments, such as outdoors.
(17) What is Resolution?
Resolution is the number of pixels per square inch on the screen. A higher resolution means more detailed images and better visual quality, especially when viewed up close.
(18) What is Grayscale?
Grayscale refers to the number of brightness levels a pixel can display. More grayscale levels mean a wider range of colors and a more natural-looking image.
(19) What is Double Primary Color?
Most color LED screens use double primary color technology, which combines red and green LEDs to produce a wide range of colors. This is the basis for full-color displays.
(20) What is Full Color?
Full color LED screens add blue LEDs to the red and green combination, creating a complete spectrum of colors. This technology is now widely used in modern displays.
Understanding these terms will give you a solid foundation if you're entering the LED screen industry. Whether you're working on design, manufacturing, or sales, having a clear grasp of the technical language is essential for success.
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