Humans are visual creatures. We heavily rely on visual information for various purposes and activities. With the continuous advancement of technology, the forms of disseminating visual information are also evolving. Thanks to various digital displays in the digital age, content is now disseminated in the form of digital media.
LED display technology is one of the most widely used display solutions. Nowadays, most businesses are fully aware of the limitations of traditional displays such as static signs, billboards, and banners. They are turning to LED display screens or LED panels for better opportunities.
LED display screens attract more audiences due to their stunning viewing experience. Now, more and more businesses are turning to LED display screen suppliers for advice to incorporate LED display screens into their advertising and promotional strategies.
While professional LED display screen suppliers always provide insightful advice, it’s always a good practice if business owners or representatives can grasp the basic knowledge of LED display screens. This can help businesses make better purchasing decisions.
LED display screen technology is highly sophisticated. In this article, we will only explore the most important aspects of four of the most common LED packaging types. We hope it can help you make better business decisions.
The four LED packaging types widely used in commercial digital display screens are:
DIP LED (Dual In-line Package)
SMD LED (Surface Mounted Device)
GOB LED (Glue-on-Board)
COB LED (Chip-on-Board)
DIP LED Display Screen, dual in-line packaging is used. It is one of the oldest LED packaging types. DIP LED display screens are made using traditional LED bulbs.
LED, or Light Emitting Diode, is a tiny device that emits light when current passes through it. It has a striking appearance, with its epoxy resin casing having a hemispherical or cylindrical dome.
If you observe the surface of a DIP LED module, each LED pixel consists of three LEDs – one red LED, one green LED, and one blue LED. RGB LED forms the basis of any color LED display screen. Since the three colors (red, green, and blue) are primary colors on the color wheel, they can produce all possible colors including white.
DIP LED display screens are mainly used for outdoor LED screens and digital billboards. Due to its high brightness, it ensures visibility even in bright sunlight.
Furthermore, DIP LED display screens are durable. They have high impact resistance. The hard LED epoxy resin casing is an effective packaging that protects all internal components from potential collisions. Additionally, since LEDs are directly soldered onto the surface of LED display modules, they protrude. Without any additional protection, protruding LEDs increase the risk of damage. Therefore, protective masks are used.
The main drawback of DIP LED display screens is their high cost. DIP LED production is relatively complex, and market demand has been declining over the years. However, with the right balance, DIP LED display screens can be a valuable investment. DIP LED display screens consume less power than most traditional digital displays. In the long run, it may save more money.
Another drawback is the narrow viewing angle of the display. When viewed off-center, narrow-angle displays make the image appear inaccurate, and the colors appear darker. However, if DIP LED display screens are used for outdoor applications, it’s not a problem as they have longer viewing distances.
SMD LED Display Screen In Surface Mounted Device (SMD) LED display modules, three LED chips (red, green, and blue) are rearranged into one dot. Long LED pins or legs are removed, and LED chips are now directly mounted on a single package.
Large SMD LED sizes can reach up to 8.5 x 2.0mm, while small LED sizes can go as low as 1.1 x 0.4mm! It’s incredibly small, and small-sized LEDs are a revolutionary factor in today’s LED display screen industry.
Since SMD LEDs are smaller, more LEDs can be mounted on a single board, achieving higher visual resolution effortlessly. More LEDs help display modules have smaller pixel pitches and higher pixel density. SMD LED display screens are the most popular choice for any indoor application due to their high-quality images and wider viewing angles.
According to LED packaging market forecast reports (2021), SMD LEDs had the largest market share in 2020, widely used in various devices such as indoor LED screens, televisions, smartphones, and industrial lighting systems. Due to mass production, SMD LED display screens are generally cheaper.
However, SMD LED display screens also have some drawbacks. They are more susceptible to damage due to their smaller size. Additionally, SMD LEDs have poor thermal conductivity. In the long run, this could lead to high maintenance costs.
GOB LED Display Screen GOB LED technology, introduced years ago, caused a sensation in the market. But was the hype overestimated or real? Many industry insiders believe that GOB, or Glue-on-Board LED display screens, are simply an upgraded version of SMD LED display screens.
GOB LED display screens use almost the same packaging technology as SMD LED technology. The difference lies in the application of transparent gel protection. The transparent gel on the surface of LED display modules provides durable protection. GOB LED display screens are waterproof, dustproof, and shockproof. Some researchers even revealed that transparent gel helps with better heat dissipation, thereby extending the lifespan of LED display screens.
While many argue that the additional protection features do not bring significant benefits, we have a different opinion. Depending on the application, GOB LED display screens can be a “life-saving” investment.
Some common applications of GOB LED display screens include transparent LED displays, small-pitch LED displays, and LED screen rentals. Both transparent LED displays and small-pitch LED displays use very small LEDs to achieve higher resolutions. Smaller LEDs are fragile and more prone to damage. GOB technology can provide a higher degree of protection for these displays.
Additional protection is also important for LED display screen rentals. LED display screens used for rental events require frequent installation and dismantling. These LED screens also undergo multiple transports and movements. Most of the time, minor collisions are inevitable. The application of GOB LED packaging helps reduce maintenance costs for rental service providers.
COB LED Display Screen are one of the latest LED innovations. While an SMD LED can have up to 3 diodes within a single chip, a COB LED can have 9 or more diodes. Regardless of how many diodes are soldered on the LED substrate, a single COB LED chip has only two contacts and one circuit. This significantly reduces the failure rate.
“In a 10 x 10mm array, COB LEDs have 8.5 times the number of LEDs compared to SMD LED packaging and 38 times compared to DIP LED packaging.”
Another reason COB LED chips can be tightly packed is their superior thermal performance. The aluminum or ceramic substrate of COB LED chips is an excellent medium that helps improve thermal conductivity efficiency.
Furthermore, COB LED display screens have high reliability due to their coating technology. This technology protects LED screens from moisture, liquids, UV rays, and minor impacts.
Compared to SMD LED display screens, COB LED display screens have a noticeable disadvantage in color uniformity, which may result in a poorer viewing experience. Additionally, COB LED display screens are also more expensive than SMD LED display screens.
COB LED technology is widely used in small-pitch LED screens with pixel pitches smaller than 1.5mm. Its applications also cover Mini LED screens and Micro LED screens. COB LEDs are smaller than DIP and SMD LEDs, allowing for higher video resolutions, providing an extraordinary viewing experience for audiences.
Comparison of DIP, SMD, COB, and GOB LED Types of LED display screens
LED screen technology has been rapidly evolving over the past few years. This technology has brought various models of LED display screens to the market. These innovations benefit both businesses and consumers.
While we believe COB LED display screens will become the next big thing in the industry, each LED packaging type has its advantages and disadvantages. There is no such thing as the “best” LED display screen. The best LED display screen will be the one that best fits your application and requirements.
We hope this article helps you make decisions. If you still have questions, please feel free to let us know!
For inquiries, collaborations, or to explore our range of LED Display, please feel free to contact us: sales@led-star.com.
Post time: Mar-14-2024