Recently, 36氪 was informed that Shenzhen Pulang Quantum Semiconductor Co., Ltd. (hereinafter referred to as “Pulang Quantum”) completed tens of millions of yuan in Pre-A round of financing. This round of financing was led by Dongfang Jiafu, Suzhou Yihe and BAIC Production Investment. , Co-invested by the Gome Angel Fund of the Chinese Academy of Sciences, this round of financing will be mainly used for product research and development and capacity expansion.
“Pulang Quantum” was established in May 2021, and its technology relies on Southern University of Science and Technology. The company mainly studies semiconductor quantum dot luminescent materials and quantum dot application products. Its products can be widely used in optoelectronics, microelectronics, new displays, third-generation In semiconductor, sensor, life science, material science and other fields, it is the only manufacturer in China that has realized the design and preparation of quantum dot materials with independent intellectual property rights, as well as the sales of quantum dot application products.
Quantum dots (QDS) are a cutting-edge semiconductor nanomaterial with grain diameters ranging from 2 to 10 nanometers. From the perspective of material properties, quantum dots have the advantages of good photostability, controllable emission spectrum, wide excitation spectrum, narrow emission spectrum, wide Stokes shift, and long fluorescence lifetime. They can be used as a new generation of fluorescent materials for display. panel field.
quantum dots
Quantum dots can be used in the display field to improve display performance. 4K has become the standard for mid-to-high-end TVs, and TV products have begun to explore the development of 8K TVs. Zhang Zhikuan, founder and CEO of Pulang Quantum, told 36氪 that Pulang’s innovative quantum dot color conversion optical film can be combined with LCD screens, Micro-LED and OLED to improve the resolution and color gamut of the display. for better display quality.
Compared with self-luminous display systems such as OLEDs, the contrast ratio of liquid crystal displays using backlights is lower than that of OLEDs, only 800-1000:1, which affects the color rendering ability. The Mini LED backlight can greatly improve the screen contrast through dynamic partition backlighting, surpassing the level of OLED TVs; but the Mini LED backlights are all single blue, so it is necessary to cooperate with the quantum dot color conversion film to solve the color ability from the perspective of color gamut, reaching far beyond the True color reproduction for OLED TVs.
The technology of quantum dots is fully compatible with existing liquid crystal display systems, and low-cost Mini LED and quantum dot color conversion can help liquid crystal display to greatly improve the display effect. Compared with the organic light-emitting materials of OLED, quantum dots are more stable, and the cost of quantum dot solutions is lower, which has become the mainstream technical route to improve the effect of liquid crystal display. Restricted by materials and technology, OLED cannot achieve true 8K TV, so all 8K TVs on the market are Mini LED + quantum dot technology, such as Samsung’s 8K TV, which adopts this solution.
The value of quantum dot technology doesn’t stop there. Quantum dots have smaller rulers and can separate purer colors through size control. Blue Micro LED or Blue OLED combined with red and green quantum dot color filter (QDCF) is the fastest and most cost-effective solution to realize full color of Micro LED, silicon-based OLED and large-size OLED. In the long run, with the unique and excellent optical and physicochemical properties of quantum dot materials, quantum dot electroluminescent diode (QLED) technology has the characteristics of ultra-thin, high color gamut, flexibility, high contrast, and long life. Frontier display fields such as transparent TV have broad application prospects.
In addition to the display field, quantum dot technology can also be used in lighting, photovoltaic and other scenarios. According to the calculation logic of head forecasting agencies such as IHS, the future market of quantum dot optical films in the TV field will reach more than 10 billion yuan; and the overall market capacity of quantum dot materials can reach 100 billion yuan.
Pulang Quantum has the ability to produce quantum dot materials, and can design quantum dot production equipment by itself to ensure the effect of quantum dot products to the greatest extent. Product life and reliability are the core indicators for measuring quantum dot products. Zhang Zhikuan told 36 Krypton that the lifespan of Pulang quantum dot electroluminescent red and green materials can exceed 20,000 hours, which has reached the commercial service life standard of OLED products; in addition, the highest resolution of silicon-based OLEDs widely used in AR/VR The rate is 4000PPI, and the brightness is less than 4000nit. The electroluminescent silicon-based quantum dot products of the Quantum Quantum demo can achieve a resolution of 6000PPI and a brightness of more than 13000nit, far exceeding the performance of silicon-based OLEDs. Performance potential and mass-production friendliness.
In terms of business model, Pulang Quantum relies on its own advantages in R&D and manufacturing of quantum dot materials, exerts the team’s deep understanding of the real needs of end customers, strengthens cooperation with mainstream end customers, and produces/sales quantum dot-based applications that can directly meet customer needs. The product. In the future, the company will continue to launch a new generation of display materials such as quantum dot diffusion plate, non-barrier film PET quantum dot film, quantum dot ink, quantum dot photoresist, and the ultimate display electroluminescent quantum dot display device.
In addition to quantum dot optical films, Pulang Quantum also has phosphor film products such as those used in Apple mini products. Phosphor film can be widely used in scenarios with high reliability requirements such as smart watches, cameras, and large car screens. Zhang Zhikuan said: “Customers told us that Pulang is the only company in Greater China that can produce phosphor films other than Japan’s Fuji.”
In terms of customer expansion, Pulang Quantum has served dozens of customers including BOE, TCL and Taiwan Innolux, and will focus on developing customers in South China in 2022.
In terms of revenue, the company is expected to achieve tens of millions of revenue in 2022. It is currently in the stage of running in with customers and promoting mass production of products. The demand for quantum dot optical films and phosphor films is increasing, and it is expected to obtain 100 million yuan in 2023. level revenue.
Speaking of future development plans, Sun Xiaowei, founder of Pulang Quantum, said: “The success of this financing shows that Pulang has been recognized by the investment community. In the new year, we will continue to consolidate the sales of quantum dot films and actively deploy new products. Photoluminescence quantum dot products, including quantum dot ink, quantum dot photoresist, quantum dot pixelation technology, etc.
On the founding team, Professor Sun Xiaowei, the founder of Pulang Innovation, is a chair professor at Southern University of Science and Technology. He has been researching quantum dot materials and devices for many years, and is mainly responsible for the company’s technological development. The co-founder and general manager, Dr. Zhang Zhikuan, holds a bachelor’s and master’s degree from Peking University and a doctorate from Hong Kong University of Science and Technology. He has served as the head of R&D products and technical director of large domestic and foreign companies, mainly responsible for the overall operation of the company. At present, Pulang Innovation has more than 40 employees, mainly R&D personnel.
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