SPAD chip maker Fushi Technology expects to complete the Pre-IPO in the first half of 2022.

Fushi Technology was founded on 20 17 1 1, headquartered in Shenzhen, focusing on the design of laser radar SPAD chips. Is an integrated circuit design enterprise, a national high-tech enterprise, and the Guangdong Human-Computer Interaction Sensor Engineering Technology Research Center. Its products mainly include SPAD chips, optical sensor chips and 3D vision chips, which are used in smart cars, robots, smart toys, mobile phones, smart door locks, face-brushing payment and other fields. At present, the company has completed the A and B rounds of financing, and the accumulated financing amount exceeds 400 million yuan. Investment institutions include Li He, China Yin Hong and Xinhenglida.

Although Fushi Technology has not been established for a long time, it has accumulated three product lines: SPAD, optical sensing and face recognition. Mo Liang Hua, CEO of Fushi Technology, told 36Kr that the company expects to complete pre-listing financing in the first half of 2022.

With the increasing demand for autonomous driving technology in automobiles, commercial robots, AR/VR and other products, vision technologies such as laser radar have also ushered in development. From 20 19, Fushi Technology set up a new technology research institute to tackle key problems of lidar sensor chips.

Avalanche diode (APD) is the key device of lidar, but it has some problems such as complex system, high power consumption and high cost. It is a solution to apply SPAD (single photon avalanche diode) technology originally used in military and aerospace fields to civil laser field.

Mo Liang Hua told 36Kr that APD (Avalanche Diode) needs hundreds of photons to detect effectively, while SPAD (Single Photon Avalanche Diode) can detect one photon effectively. SPAD is widely studied in the field of scientific research, so it is difficult for large-scale civilian use and has a high threshold for commercialization. In the past, SPAD devices in military and aerospace fields were mainly made of gallium arsenide. Fushi Technology has developed a silicon-based SPAD, the cost of which is reduced to one tenth of the original APD, which can be used for civil lidar.

On the difficulty of technology research and development, Mo Liang Hua told 36Kr that there are three difficulties in SPAD devices: First, SPAD devices are a comprehensive discipline integrating materials, processes and design, and need multiple technical foundations to develop; Second, the difficulty of chip design, photon flying speed is very fast, wave length is short, it is necessary to receive multiple photons at the same time, and make the chip low power consumption in high-speed circuits; Third, anti-interference ability, SPAD has the advantage of high sensitivity, but ambient light and other lidar signals will interfere with SPAD devices, affecting their efficacy or even failing.

Mo Liang Hua said that Fuji Technology has opened SPAD equipment, which has improved the efficiency of photon detection. In addition, the anti-interference ability of single photon avalanche diode is weak, and Fushi Technology has developed a system scheme to solve the anti-interference problem.

There are nearly 40 people devoted to the research and development of lidar, including doctors 1 1, and some of them are high-level professionals recruited from overseas. The research institute and the company's senior chip design team spent more than two years, breaking through the difficulties of technology, devices and circuit integration, and developed SPAD lidar products, which have now started mass production and supply.

At present, the chip is mainly used for short-distance ranging, and can be used for intelligent toys such as sweeping robots, service robots, mowing robots and Tucki robot horses. Fuji has reached a strategic cooperation with passenger car lidar company to jointly develop SPAD chips and products for vehicle lidar.

In visual identification technology, Fushi Technology has accumulated a lot. 20 18,10 June, Fushi Technology launched a payment-grade 3D camera solution in Shenzhen, which further improved the security and interactive experience of face sensing on the basis of traditional 2D face sensing technology. 2065438+April 2009, Fushi Technology released a fingerprint scheme under LCD screen to promote the development of thousand yuan mobile phones; 65438+February, its 3D structured light face recognition smart lock was mass-produced; By 2020, Fushi Technology will begin to study binocular 3D recognition technology.

Mo Liang Hua said that Fu Shi Technology's structured light vision recognition scheme is the first one in the world to be mass-produced on door locks. In 20021year, the company's binocular machine vision face recognition shipments reached 565,438+10,000 sets per month, ranking first in the segmentation field. At the same time, the world's first off-screen color temperature chip was exclusively mass-produced in flagship machine, a first-line mobile phone brand.

At present, the products and technologies of Fushi Technology have served more than 10 industries, providing chips and complete technical solutions for mobile phones, Internet of Things, autonomous mobile devices, automobiles and other terminals. Its * * * has more than 50 different types of chip products in six categories.

It is reported that at present, Fushi Technology is cooperating with well-known domestic brands such as Xiaomi and OPPO, as well as well-known passenger car lidar company, some of which have been officially mass-produced and listed.

Mo said that Fushun Technology's revenue in 20021is expected to increase by more than ten times compared with the same period of last year, and the company's revenue in 2022 is expected to increase by another ten times.

Mo Liang Hua, founder of Fushi Technology, holds a bachelor's degree in microelectronics from Nanjing University, a master's degree in integrated circuit design from Hong Kong University of Science and Technology, and a doctoral student from Tsinghua University Institute of Integrated Circuits. Participated in the 908 national key project of microelectronics industry, and participated in drafting the national standard "Biometric Anti-counterfeiting Technical Requirements". He has been deeply involved in the field of human-computer interaction for more than ten years and led the technical team to be the first in the world in the field of capacitive touch and TDDI. As an inventor in the field of integrated circuit design, he has been granted more than 0/00 patents at home and abroad (including 20 patents in the United States), and is a senior expert in analog circuit design, mixed-signal chip design, chip architecture design and system design.

In terms of team members, Fushi Technology has more than 200 people, accounting for more than 70% of research and development. On average, the team members have more than 65,438+00 years of experience in the chip industry, and the cumulative shipment of chips with leading designs is nearly 4 billion.