At present, the Mini/MicroLED display industry is still in the limelight and continues to occupy the forefront of the display industry hot search list. After several years of foreshadowing in terms of technology, products, production capacity, etc., with the increase of incoming brands, the emergence of terminal products and the gradual decline in cost, whether it is Mini LED backlight, Mini RGB direct display or microled, they are accumulating the confidence of mass production. , waiting for the moment of final eruption.
From the demand side, the key to consumers widespread acceptance of Mini/MicroLED products is price. From the supply side, the key to cost control is directly linked to technological breakthroughs in the supply chain. Based on years of hard work and accumulation, players have also It is already known which links still have room for improvement and optimization. Among them, the huge transfer problem of the front-end process is still the top priority of technical research.
In recent years, many companies have devoted themselves to the development of high-efficiency and high-precision transfer equipment. Although the solutions they have launched are not the same, they can also reflect the effect of cost reduction to varying degrees. Nevertheless, further cost reductions still need to be continuously upgraded and optimized solutions to meet. To this end, system solution suppliers represented by K (Kulicke Soffa, Kulissofa), through continuous technological innovation, expect to launch more suitable products to meet the needs of Mini/Micro LED mass production.
With a history of more than 70 years, K started with the Wire Bonding business, and after establishing its market position, it has steadily expanded its business scope to more fields such as advanced packaging and advanced display in the semiconductor back-end, and has now established itself in various fields. Heeled up and held a certain initiative.
In the field of advanced display, KS focuses on the equipment required for the core technology of Mini/MicroLED - mass transfer system, and focuses on the laser transfer technology that is currently favored by the industry.
At the 2022 New Display Industry Symposium, EA/APMR product director Wang Qiong an introduced in his keynote speech that has been investing in the and manufacturing of mass transfer systems since 2017, and its first equipment has been successfully applied to Mini/Micro LEDs The market has also received positive market feedback.
On this basis, in order to further improve the performance of the equipment and comprehensively enhance the company comprehensive competitiveness, acquired Uniqarta, a start-up focusing on laser transfer technology research, in 2021, including its intellectual property and patent portfolio. In this regard, has key advantages such as laser transfer equipment technology, process, know-how, intellectual property rights, etc., and has achieved all-round upgrades in the field of Mini/Micro LED display equipment, and the LUMINEX™ equipment has also been born.
Mr. Wang Qiong an said that the LUMINEX™ equipment has three functions of chip sorting, rearrangement, and final transfer, and supports sorting, mixing and spacing adjustment steps, and the final placement process. As a second-generation device, LUMINEX™ excels in transfer efficiency, precision, and yield.
According to reports, the LUMINEX™ equipment adopts a more advanced laser galvanometer scanning method, which can expand the range of laser irradiation, thereby improving the working efficiency of the equipment. Specifically, the device can perform multi-graphic placement at multiples of 100Hz, up to 10,000Hz in scan mode (equivalent to 10,000 placements per second), and the accuracy is improved by 10μm, successfully improving the productivity and efficiency of advanced display technologies and applications to a new level s level.
In addition, Mr. Wang Qiongan also mentioned the special materials and processes used in the LUMINEX™ equipment. In terms of materials, the equipment uses a special glue material, which can prevent the laser from directly contacting the chip and cause surface damage during the laser irradiation process, reduce the chip failure rate, and thus control the production cost. In terms of technology, the LUMINEX™ platform has an automatic level adjustment mode, which can meet the high requirements of flatness and gap; at the same time, it can also achieve a smaller laser spot (a single spot can currently be as small as 5-6μm).
Mr. Wang Qiong an said that the extensive flexibility of LUMINEX™ equipment meets the production needs of LED, OSAT, panel and display suppliers for Mini/Micro LED, and has received orders from customers.
Looking to the future, estimates that Mini LED backlight display currently only accounts for 3% of the current display market capacity, but the development speed has increased, and the penetration rate is expected to reach 20% in 2025; Mini LED direct display technology will grow to 18% ; And Micro LED will gradually lead the innovation of display technology in the next few years.
Based on such a broad application prospect, will start from improving the efficiency, precision and yield of equipment, and continue to cooperate with customers to promote the growth of the Mini/Micro LED market. According to Mr. Wang Qiong’an, has begun to discuss and cooperate with customers in various fields such as wafers, packaging, and back-end modules on the application of LUMINEX™ equipment, and strive to provide technical support for more customers. help in the process.