One Times Technology has completed hundreds of millions of A + rounds of financing, and is committed to becoming the world's leading MicroLED testing manufacturer.

Yibei Technology recently completed several hundred million yuan in Series A+ financing. This round was jointly invested by Guozhong Capital, Anxin Investment, Puhua Capital, Xiamen Capital Innovation and Siming Science and Technology Innovation Fund. Houlang Capital served as an early investor and financial advisor. The funds obtained from this financing will be mainly used for market expansion, product development and ensuring delivery. Since its establishment 5 years ago, the company has completed a total of 5 rounds of financing. Currently, the cumulative amount of financing ranks first among new equipment manufacturers in the Micro-LED industry. It has introduced multiple types of shareholders such as domestic leading financial investment institutions, domestic leading industrial capital and government capital, showing that the capital market continues to be optimistic about the development prospects of the Micro LED industry, and highly affirms Yiben Technology's achievements in the field of Micro-LED equipment.

With the gradual implementation of MicroLED terminal products in the past two years, the industry has transitioned from the sample verification stage to the mass production introduction and cost reduction stage. Products already on the market include large-size TVs (Samsung/Hisense/TCL/ Chenxian, etc.), watches (Garmin Fenix 8 Pro MicroLED), car displays (Ams-Osram/Marelli matrix headlights) and AR microdisplays (JBD Hummingbird II), etc. Display applications are blooming in many places. At the same time, array optical communication technology based on MicroLED has also received close attention and investment from technology giants such as TSMC, Microsoft and Foxconn, and is expected to become an ideal solution for cutting-edge technologies such as high-speed visible light communication (VLC), chip-to-chip optical interconnection (D2D) and silicon photonic co-packaging optics (CPO).

Standing at the intersection of LED, flat panel display and semiconductor industries, the company is committed to becoming the world's leading provider of testing technology and equipment in the Micro-LED industry. As the technical routes of mass transfer and monolithic integration tend to converge, the company's technology and product line layout are increasingly improving in the process of close cooperation with downstream customers. Since the launch of China's first wafer-level PL mass inspection equipment in July 2022, it has gradually expanded into product fields such as AOI displacement measurement and epitaxial non-pattern defect detection. So far, it has basically covered the leading manufacturers in mainland China. At the same time, it has actively developed customers in Taiwan and deployed in overseas markets such as Japan, South Korea, Europe and the United States, becoming a rare case of front-line equipment going overseas in the current environment. The company's products have completely covered all Micro-LED front-end production links from substrate - epitaxial section - COW chip - COC mass transfer/microdisplay - MIP/Panel module, providing comprehensive photoluminescence PL, high-precision bright/dark field, and multiple optical detection technologies and products.

Micro-LED lightPerformance defect detection equipment

As the first domestic manufacturer to develop and currently the only manufacturer that can mass-produce Micro-LED luminous performance defect detection equipment, the PL photoluminescence product line is the first product launched by Yiben Technology for the market. In just 2 years of commercialization, the company's products have fully covered all domestic leading chip factories, mass transfer factories, panel factories and some microdisplay factories.

In the Micro-LED industry, PL photoluminescence detection equipment and mass transfer/repair equipment are key equipment for the large-scale mass production and cost reduction of Micro-LED. They have become the core technical means for evaluating the luminous performance of chips in the Micro-LED manufacturing process. It took 3 years for Yiben Technology to fully catch up with overseas benchmarking manufacturers such as Japan's Hamamatsu, Japan's Toray and South Korea's Etamax, and received order recognition from mainland China, Taiwan and overseas customers.

This equipment is mainly used in COC manufacturing in chip factories, COW manufacturing in giant transfer factories, and MIP manufacturing in module factories. It connects the entire process from patterning to modularization of Micro-LED wafers in series, and provides detection indicators such as chip luminance, spectral distribution, and luminous uniformity in a non-contact, non-destructive manner. It also provides the most basic chip performance data for mass transfer, mass repair, bin separation/mixing, and MIP modularization. At the same time, the equipment’s wafer detection speed can reach 15 wafers/hour, and its grain detection speed can reach tens of millions of particles per hour. On the basis of ensuring detection accuracy and stability, it can fully meet the rhythm requirements of other upstream and downstream links.

Micro-LED substrate and epitaxial testing equipment

As the MicroLED industry enters mass production, the industry's requirements for wafer yield and cost continue to increase, and a large number of LED chip back-end failures are caused by initial substrate surface defects or poor epitaxial layer growth, especially as the chip size becomes smaller and smaller, even falling below 5 μm (such as AR micro-display applications).(used), its sensitivity to epitaxial layer defects is getting higher and higher, and there are many types of subsurface crystal defects that cannot be detected using traditional detection methods.

The dedicated inspection equipment for Micro-LED substrates and epitaxy launched by Yiben uses microphotoluminescence imaging, confocal differential interference imaging, high-resolution dark field imaging and wide-spectrum PL imaging technology to achieve non-contact, non-destructive and ultra-fast defect/sub-surface defect detection of transparent samples, and provides statistical results of defect mapping, epitaxy and device overlay mapping and partitioned mixed Bin yields in different dimensions.

AOI transfer displacement and defect detection equipment

Chip defect detection and measurement in Micro-LED scenarios have obvious industry characteristics: huge amount of data, small defect size, sensitive location information, and extremely high detection rhythm requirements. For traditional AOI manufacturers, entering the Micro-LED scene and providing products supported by traditional machine vision technology is completely unable to meet customer needs.

One-time technology AOI chip defect detection equipment adopts ultra-wide field, high NA, micro-line scan optical imaging system and high-throughput image processing algorithm, combined with system error integrated analysis and calibration technology, motion and image quality adaptive compensation technology, which can detect Micro The COW in the LED process and the COC wafers before and after mass transfer are comprehensively and carefully inspected. It also has sub-micron level global displacement detection capabilities, so it can effectively monitor and control the yield of the mass inspection and transfer process. Can detect tens of millions of Micro LED COW (Chip on Wafer) or COC (Chip on Carrier) wafers within minutesDefect detection or position measurement of core particles can detect defects and offsets as small as sub-micron.

The YiXi Technology Technology Transformation Team comes from the Chinese University of Hong Kong, Nanjing University, Zhejiang University and the University of Science and Technology of China majoring in physics and materials. The company's core team has accumulated more than 15 years in the field of optical and semiconductor materials. Based on the understanding of material systems, mastery of material characterization methods and independent overcoming of difficulties in core optical systems, the YiXi team can quickly become a representative company in the country for testing equipment in the Micro-LED industry, and hopes to commercialize more key process equipment that truly solves the production needs of end customers in the future.