Alphabetter Technology Leads with Micro LED Wafer-Level Inspection Equipment
On August 15, Alphabetter Technology announced the successful delivery of its independently developed Micro LED wafer-level AOI (Automated Optical Inspection) equipment to a key customer in the Micro LED mass transfer sector. This year, Micro LED industrialization has shown remarkable progress, with five companies, including Alphabetter, officially announcing their shipping activities in August.
Breakthroughs in Micro LED Wafer-Level Inspection
Alphabetter Technology’s Micro LED wafer-level AOI inspection equipment, delivered on August 15, has now reached a broader range of major customers in the Micro LED industry. The equipment utilizes a state-of-the-art ultra-widefield, high NA, microscopic line-scanning optical imaging system, and high-throughput image processing algorithms. Combined with systematic error integration analysis, calibration technology, and adaptive compensation for motion and image quality, this equipment enables comprehensive inspection of Micro LED wafers before and after the mass transfer process. The system can detect global displacement down to the sub-micron level, effectively monitoring and controlling yields throughout the production process.
Alphabetter Technology’s inspection technology can identify tens of millions of core defects or positional errors on Micro LED COW (chip on wafer) or COC (chip on carrier) wafers within minutes. This capability has been honed through years of production line practice, where the technology has analyzed and processed data from wafers containing over 100 million chips, identifying defects and positional shifts down to the sub-micron level.
In July 2022, Alphabetter launched its first Micro LED wafer-level PL (Photoluminescence) inspection equipment, which passed acceptance by a key customer in early 2023 and received repeat orders. By the second half of 2023, Alphabetter had consistently secured orders from leading customers in the Micro LED industry, entering a mass production stage and completing multiple batches of stable deliveries.
To meet the high-throughput position measurement and defect detection needs of downstream customers in the COC mass transfer section, Alphabetter combines its PL and AOI technologies. It provides comprehensive solutions for wafer-level inspection in the Micro LED industry. In February, the Fujian Provincial Department of Industry and Information Technology proposed the formation of the “New Display Manufacturing Innovation Center of Fujian Province,” aiming to promote Micro LED and other new display technologies as part of a long-term development plan. This initiative involves collaboration with Quanzhou Sanan and 16 other institutions and companies, with Shenzhen Alphabetter Technology Co., Ltd. taking a leading role in Micro LED wafer-level PL inspection.

Significant Announcements from Micro LED Companies in 2023
This year, numerous Micro LED companies have reported advancements in production and shipments, marking significant steps in the industrialization of Micro LED technology. Companies like Tianma Micro, Stantech, AUO, Seoul Semiconductor, Maxwell, HYMSON, and KOALA URAN, among others, have publicly shared their progress.
- Seoul Semiconductor announced during an earnings conference on August 12 that it is set to mass-produce Micro LED displays.
- KOALA URAN completed the shipment of its first domestically developed glass-based Micro LED wafer volume testing equipment in mid-August.
- Maxwell revealed in early August that its latest Micro LED laser stripping (LLO) and mega transfer (LMT) equipment successfully completed sample validation and was delivered to top-tier customers in the new display sector, aiding them in setting up Micro LED product lines.
- HYMSON reported on August 1 that its first Micro LED pilot line, covering jumbo transfer, soldering, and laser repair equipment, was recently shipped and passed in-plant FAT acceptance.
- According to MoneyDJ, AUO confirmed that Micro LED technology is now being shipped for large-size TV mass production.
- In mid-July, Xiamen Future Display Technology Research Institute announced plans to illuminate a high-PPI Micro-LED transparent display, aiming for applications in various fields such as transparent window displays and notebooks.
- In July, VueReal initiated a production expansion plan and entered a strategic cooperation with Rhenium Treasure Technology (RiTdisplay) to drive Micro LED technology development for consumer markets and AR applications.
- Chongqing Konka reported in June that it had increased the yield of red Micro LED bonding to 98%.
- On June 26, Tianma Micro announced that its Micro LED production line had entered the pilot production trial stage.
- Stantech held a mass production ceremony for its Micro LED production line project on June 25.
From the production milestones of Tianma Micro and Stantech to the shipment announcements from AUO, HYMSON, Maxwell, KOALA URAN, and Alphabetter Technology, the industrialization of Micro LED technology is clearly advancing at a rapid pace.
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