Mini LED backlight technology is rapidly advancing, creating a significant impact across a variety of application scenarios:
Mini LED Backlight in Consumer Electronics
According to recent data, nearly 50 Mini LED backlight TVs and monitors have been launched this year, with products catering to both the “high-end” and “cost-effective” segments.
Mini LED Backlight in Automotive Displays
As new energy smart vehicles continue to rise, major car manufacturers like General Motors, Ford, BMW, and Mercedes-Benz are actively promoting Mini LED automotive displays.
Mini LED Backlight in VR Displays
With its superior brightness and high contrast, Mini LED backlight technology is gradually being adopted by leading VR manufacturers, such as Varjo, Meta, and Skyworth VR, for their latest VR products.
As Mini LED backlight products expand into more application areas, finding the right balance between cost and technology becomes essential to accelerate market penetration. One critical factor in achieving this balance is the choice of Mini LED backlight packaging technology. The debate within the industry often centers around two primary technological approaches—POB (Package on Board) and COB (Chip on Board)—each offering its own advantages.
At the 2022 Gaogong LED Display Annual Conference and Gaogong Golden Globe Awards Ceremony held on November 24, Liu Fabao, Chief Engineer of the Component Division’s R&D Department at Focus Lighting, presented the latest solutions and development trends for Mini LED backlight technology, particularly highlighting the competition between POB and COB packaging technologies.
Cost and Manufacturing: Mini POB Technology as the “Optimal Choice” for Industrialization
Mini POB technology is one of the primary Mini LED backlight solutions promoted by Focus Lighting. Through technological innovation, the company’s Component Division has developed a unique light source design that enables Mini POB to provide large viewing angles while meeting the requirements for thin modules, high picture quality, and low costs. This design significantly reduces the number of LEDs needed for the same backlight module size, improving production yields and strengthening its price competitiveness in mass production.
Applications of Mini POB Technology
Focus Lighting’s Mini POB technology is currently used in a variety of large-sized TVs (55, 65, 75, and 86 inches), monitors (27, 31.5, 34, and 49 inches), and automotive displays. It supports three different driving methods: separated LED drivers, PM-style integrated drivers, and AM-Micro IC-style integrated drivers, allowing for customized technical solutions based on specific customer needs.
Performance and Effect: Mini COB Technology as the “Dark Horse” with Full-Range Application Potential
In contrast to Mini POB, Mini COB backlight technology is a chip-level solution with higher technical requirements for key processes like printing, die bonding, rework, and encapsulation, as well as for materials and equipment, including PCBs, chips, encapsulation adhesives, tools, and machines.
Currently, Focus Lighting’s Component Division is using its expertise to enhance Mini COB technology by improving brightness, consistency, reliability, and cost-effectiveness. By employing a full-array high-efficiency chip with advanced light extraction techniques, the company addresses brightness challenges. A special die bonding algorithm, combined with optimized encapsulation, ensures uniform light and color across the array. The products undergo rigorous testing under high temperatures, humidity, and thermal shock conditions to guarantee reliability. Furthermore, optical optimization in encapsulation increases the spacing between LEDs, reducing the number of light sources required and thus optimizing costs.
Applications of Mini COB Technology
Mini COB technology can be applied to TVs, monitors, laptops, and tablets, with an optical distance (OD) of approximately 0 mm or more. Like Mini POB, Mini COB also supports three driving methods—separated LED drivers, PM-style integrated drivers, and AM-Micro IC-style integrated drivers—using a single optical lens encapsulation for custom solutions tailored to customer requirements.
Strategic Partnerships and Future Development
By leveraging “innovative technology and quality products,” Focus Lighting has secured strategic partnerships with several internationally renowned companies for its Mini POB and Mini COB backlight products. To lead industry development, Focus Lighting is focused on “improving quality and reducing costs while expanding capacity.” With the commissioning of advanced production lines, the company aims to accelerate growth and establish its leadership in the Mini LED backlight market.
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