With the innovation of Mini & Micro LED products and the expansion of market share, the mainstream technology competition between COB and MIP has become "fiercely competitive." The choice of packaging technology has a crucial impact on the performance and cost of Mini & Micro LED. What is SMD? The traditional SMD technology route involves packaging one red, one green, and one blue (RGB) light-emitting chip into a single LED, and then using SMT solder paste to weld it onto a PCB board to form a unit LED tile/module, which is finally assembled into a complete LED screen. SMD What is COB? COB stands for Chip on Board, which refers to directly welding multiple RGB chips onto a single PCB board, followed by a one-piece film encapsulation to form a unit module, which is then assembled into a complete LED screen. Conventional COB COB packaging comes in two forms: Standard and Flip. The light-emitting angle and wire bonding distance of Standard COB limit the product's performance development from a technical standpoint. Flip COB, as an upgraded version of conventional COB, further enhances reliability, simplifies production processes, offers better display effects, provides a perfect near-screen experience, and achieves true chip-level spacing, reaching Micro levels. It also outperforms traditional SMD products in terms of high brightness, high contrast, black consistency, and display stability. Since COB screens cannot sort individual LEDs for similar optical performance like SMD screens, they require whole-screen image calibration before leaving the factory. Flip COB As industry technology advances, the cost of COB packaging is also trending downward. According to industry data, the P1.2 COB prices have already fallen below those of SMD technology products, and the price advantage becomes even more evident in smaller pitch products. What is MIP? MIP, which stands for Mini/Micro LED in Package, refers to cutting the light-emitting chips on an LED panel into blocks to form single or multi-chip devices. After sorting and mixing the light, they are welded onto a PCB board using SMT solder paste to form an LED display module. This technological approach embodies the concept of "breaking down the whole into parts," with the advantages of smaller chips, lower losses, and higher display consistency, offering the potential to reduce costs significantly and increase production volume, thereby enhancing the performance and efficiency of LED display devices. MIP The MIP solution achieves color consistency through full pixel testing and mixing of BIM, reaching cinema-grade color gamut standards (DCI-P3 ≥ 99%); it also screens out and eliminates defects during the sorting and color separation process, ensuring the quality of each pixel point during the final transfer, thus reducing repair costs. Moreover, MIP offers better compatibility, suitable for different substrates and pixel pitch applications, and is compatible with medium and large-size Micro LED dis...

LED displays are increasingly popular across various industries, including advertising, cultural tourism, commercial displays, information release, education, healthcare, VR filming, and cinema. With outstanding visual effects, energy efficiency, and convenience, they are widely favored. As fine-pitch LED display technology matures, the advantages of miniaturization and lightweight design become more prominent. The ability for customized differentiation further enhances the demand for LED displays. However, with broader applications and a growing market, the industry faces challenges due to low entry barriers, resulting in high levels of homogeneity. Imitation and plagiarism are rampant, and the presence of substandard products often overshadows quality innovations. Display is only the basic function of an LED screen; true advancement lies in the integration of multiple technologies to unlock new application scenarios, charting the industry’s path toward its own “starry sea.” For stage applications, the X/Y Rover Series combines LED display and stage lighting technologies, using the DMX 512 protocol to resolve the challenges of standalone displays and lighting systems. This product won the Red Dot Design Award and holds a national invention patent. In order to solve the problem of curved surface display, we invented the LEgenD series flexible screen, which has the characteristics of rigid and flexible, the use of magnesium alloy carbon fiber frame, to achieve light weight, only 24 kilograms per square meter, also won the Reddot red Dot award, and awarded the national invention patent. Since 2022, with the global surge in AI technology, we have focused on integrating intelligent features into the LED display industry. We believe the future of LED displays will be shaped by smart technology. Our smart advertising screens, the Pirotate and Sero Series, incorporate fine-pitch LED display technology with precision motion control, DMX 512 protocol, and cloud control capabilities. These displays automatically adjust between horizontal and vertical orientations, supporting both 16:9 and 9:16 video formats. Ideal for commercial spaces like retail stores, chains, restaurants, and malls, they save space and facilitate wider LED adoption. In 2023, we launched the Raptor Series, a milestone in LED display technology. Raptor combines rigidity and flexibility, withstanding up to 600KN of force while also capable of forward and backward bending up to 30°. This multi-functional design enables customers to save on additional purchases for unique shapes, significantly reducing investment. 1. Automated Bending Technology: Instant adjustment within 3 seconds to any angle, with a bending accuracy of 0.1°, eliminating manual adjustments. 2. Automatic Alignment: The top and bottom panels auto-align, saving time and effort. 3. Flexible Maintenance: Front and rear accessibility. 4. Lightweight Design: Using a magnesium alloy frame, each module weighs just&n...

Scanning Line The Application of Time-division Scanning for LED screen If you were to use a traditional static scanning screen design, one square meter P16 LED display would need 768 LED driver ICs. But for a P4 LED display of the same size, you'd need a whopping 12,288 LED driver ICs!(How to calculate?) It's pretty much impossible to fit that many Semiconductor Components onto the same circuit board area. That's why we use something called time-division scanning, especially for high-density, small pixel pitch LED screen. Take a look at Figure below: it shows how this works. The LEDs light up one row at a time, starting from row 1 to row n. When it's time to light up row 1, transistor Q1 turns on, and the LED driver chip activates the LED based on the grayscale value. Meanwhile, transistors Q2 to Qn are turned off. Time-division Scanning Diagram The principle of time-division scanning in LED displays is similar to that of a cathode-ray tube (CRT). When we take a photo or record video of an LED display with a shutter speed higher than the refresh rate of the LED display, black lines appear on the resulting image, as shown in below Figure . These are referred to as Scanning Lines. LED screen shows Scanning Lines due to low Refresh Rate Below Figure is a 4-scan design as an example, it takes time "A" to complete the scanning of 4 rows. If we take a photo of this display with a shutter speed faster than time "A", we call it time "B", only rows 1 to 3 will be displayed, so a black line will appear every 4 rows on the screen. However, if we use a slower shutter speed than time "A", Let's say time "C", the LED screen will be able to complete the display of rows 1 to 4, and we will get a complete image. We call the refresh rate of this display 1/A Hz. Timing Diagram of an LED Scanning Screen Bright/Dark Lines 10 Times Refresh Rate As LED screens have become popular for conference backdrops, photographers often face issues. For instance, when capturing someone in front of an LED screen, the bright background can cause the person to appear too dark in photos. To counteract this, extra lighting is used on the subject, brightening the overall scene. However, when taking a picture, the camera adjusts by narrowing the aperture and shortening the shutter speed(S ≒ 200). Unfortunately, this leads to another problem: bright and dark lines appearing on the LED screen in the background, as seen in Figure below. Due to the excessive brightness of the LED screen, the photo of main character appears too dark. Figure: Bright Line and dark line in LED screen Why does the bright/dark line appear instead of solving the scanning line ? It will be explained with the following simulation schematic. A. Shooting a 1/16 scan LED screen with Refresh Rate of 960Hz by using 1/200 shutter speed: If LED screen "A" is designed for 1/16 scan with a refresh rate of 960Hz, when taking a photo of this LED screen with shutter speed of 1/200, it will get a similar result to Figure above↑: ...

Virtual pixel technology is an innovative method for digital displays that improves resolution without the need for additional physical pixels. In the past, enhancing the resolution of LED displays necessitated the inclusion of more physical pixels, resulting in higher production costs and increased power usage. However, virtual pixel technology bypasses this issue by employing a complex arrangement of LEDs to emulate a greater pixel density. Virtual Pixel Technology, also called dynamic pixel technology, is a technique that uses software algorithms to control the LED units in a display, so that each unit can contribute to the image of multiple pixels, thus increasing the resolution of the display by up to four times. It is different from the real pixel, where each unit corresponds to one pixel. For example, a conference all-in-one machine that uses Virtual Pixel Technology can achieve a near 4K resolution with the same number of LED units as a 2K resolution machine. This improves the display quality and uniformity, while reducing the cost. It is a good choice for most users who want a high-definition display. The Key of virtual pixel technology lies in its capacity to merge the color and brightness of nearby pixels to form a virtual pixel that looks smaller than it really is. Take a standard LED video wall with a 4mm pixel pitch for example. Virtual pixel technology can blend these pixels to mimic a smaller pitch, like 2mm. This effect is created by algorithms in the LED video wall's processing system that calculate the best values for each pixel, enabling it to reach a much higher resolution than what the physical pixels alone would indicate. A patented RGBG (Red, Green, Blue, Green) setup is crucial for these displays. By skillfully mixing these colors and adjusting the pixel layout, virtual pixel technology generates bright and crisp images. This technology offers a significant edge in the digital display industry by delivering excellent image quality without the extra costs and energy use linked to larger pixel counts. Virtual Pixels Real Pixels As is well known, each physical pixel is composed of R,G,B diode, while in the figure below, each B diode shared by 4 pixels.This is the underlying logic of virtual pixels. Benefit Energy Efficiency: Virtual pixel technology is very energy-saving, using up to 50% less electricity than traditional displays. This greatly cuts down on operating expenses, making it a wise option for extended use. Lower Operating Costs: Because it uses less energy, businesses can save significantly on their electric bills. Virtual pixel technology provides a budget-friendly option without sacrificing quality. Durability and Long Life: These displays are made with top-notch components to ensure they are sturdy and reliable. This means less frequent maintenance and fewer replacements, offering a lasting solution. Impressive Visual Effects: Virtual pixel technology produces stunning visuals with rich colors and clear images....

Definition of Color Gamut Color gamut refers to the range of all colors that a device (such as a monitor, printer, etc.) can reproduce. It reflects the device's capability in color representation, and different devices have varying color gamut ranges due to differences in technology and materials. Understanding color gamut is crucial for ensuring the accuracy of colors in images and videos, especially in fields like design, photography, and printing. In the real world, the colors of the visible spectrum in nature form the largest color gamut space, which includes all the colors that the human eye can see. To intuitively express the concept of color gamut, the CIE (International Commission on Illumination) has established a method for describing color gamut: the CIE-xy chromaticity diagram. Representation of Color Gamut CIE Chromaticity Diagram The CIE (International Commission on Illumination) has developed the CIE-xy chromaticity diagram to visually represent color gamut. In this coordinate system, the range of colors that various display devices can represent is shown as a triangular area formed by connecting three points representing RGB (Red, Green, Blue). The size and shape of this area reflect the types of colors that the device can display.The larger the area, the greater the color gamut range of the device. Color Gamut Standards sRGB: The most widely used standard, suitable for most computer and web applications, covering approximately 72% of the NTSC color gamut.The sRGB color gamut was born in 1996 and has been the most commonly used standard since the CRT(Cathode Ray Tube) era until now. Almost all monitors support sRGB nowadays, and it can easily handle web browsing, graphic work, daily office tasks, and more. Therefore, achieving 100% sRGB color gamut coverage is something that many better monitors can do now. However, the sRGB color space is only about one-third of the CIE 1931 XYZ color space, and sRGB has insufficient coverage for the green part of the color gamut. So, if an image originally has very rich greens (such as a picture of green leaves), it may lack expressiveness when viewed under sRGB. More importantly, sRGB is only suitable for self-luminous display screens to display "virtual" images and cannot be used on "physical" printed materials that rely on reflected light for color display. Therefore, to standardize the colors of printed materials, the CMYK color standard came into being. Adobe RGB: Launched by Adobe, it can express a broader range of greens and cyans, making it suitable for professional photography and design.The Adobe RGB color gamut was primarily developed to address the issue that the sRGB color gamut cannot cover the CMYK color gamut used in printing systems. Its main improvement is in the display of cyan-green tones, covering approximately 50% of the CIE 1931 XYZ color space. We can see their relationship in the color gamut diagram. Adobe RGB is a considerably large color gamut, and some high-end profes...

This Article was wroten by Tony Tong, the sales manager of Huasun, and initially published in Linkedin. Scan mode, also called Scan rate or scanning driving, refers to the number of LED pixels that can be connected to a single driver IC. Each pixel is connected to a pin on the driver IC on the PCB board. The number of drivers required on a PCB board design to illuminate the pixel pitch determines the scan type. Each LED pixel is connected to one pin of the driver IC on the PCB board. The more driver ICs we have on a PCB, the lower the scan type is. Most suppliers will have 1/2, 1/4, 1/8, 1/16 and 1/32 1/48 scan types. Scan and time multiplex are the same. The scan number is the number of drivers required on a PCB board design to light up the pixel pitch: The scan design is impacted directly by: Type/performances of the drive IC; Refresh rate; Grayscale; Pixel pitch; Static scanning: Static scanning is to implement “point-to-point” control from the output of the driver IC to the pixels. Dynamic scanning: Dynamic scanning is to implement “point-to-row” control from the output of the driver IC to the pixels. Each drive IC has 16 pins and can drive 16 LED chips maximum.Static drive mode means all the LEDs on the LED Tile can driven/light up by IC at once, as shown in the following image. 1/12 scan mode, means 1/12 LEDs on the LED Tile are driven/light up by IC at one time, and next time there are another 1/12 LEDs that are driven. 1/6 scan mode, means 1/6 LEDs on the LED Tile are driven/light up by IC at one time, and next time there are other 1/6 LEDs that are driven. Brightness: The higher the resolution and the higher the brightness are，the more drivers need to be used. This means we will have less space on the PCB. The higher the scan is, the lower the brightness. Theoretically, for the same LED screen, static scanning is twice as bright as 1/2 scanning, and 1/4 scanning is twice as bright as 1/8 scanning. And 1/5 scanning is twice the power consumption of 1/10 scanning.However if brightness is not an absolute requirement, there are ways to lower the brightness by experimenting with the software. A high scan drive can reduce brightness of the LED screen and in most cases suppliers can use higher scans on higher resolution screens to compensate for brightness to be more cost effective.Because the number of required driver IC has decreased. Most high scanning Drives can be used on indoor LED screens as high performance of the screen is not an absolute requirement. Because brightness is not an issue for indoor LED screen and you won't have to compensate when there is not enough space for the PCB. Therefore, it's very important to choose a reasonable scan mode for the LED screen.It needs to be based on the brightness, power consumption, refresh rate and cost – not simply the higher the better. For Example： Taking a 1/45 scan P1.875 design with the LED and driver IC on the same side as an example: LED Tile size:300×168.75mm. pixel resolution: 160×90=1...