In recent years, China’s display industry has undergone a transformative shift, evolving from catching up to running alongside, and now leading, the global industry. As innovation in the global display sector accelerates, quantum dot technology has emerged as one of the most anticipated next-generation display technologies. Recently, several leading Chinese enterprises have made significant progress in this field.
At the 2024 TCL Global Technology Innovation Conference, Li Dongsheng, founder and chairman of TCL, stated: “As of October 2024, we have filed 2,900 patents in the field of quantum dot electroluminescent displays, ranking second globally. In the new semiconductor display technologies field, we are striving to pave a new path. Moving forward, we will continue to strengthen original technological innovation and achieve more breakthroughs from zero to one.”
Quantum Dots Become the Focus of Competition
The quantum dot technology field has seen continuous advancements in research and development. According to Tianyancha, Shenzhen TCL New Technology Co., Ltd. has been granted a utility model patent for a technology titled “A Quantum Dot Backlight Module and Display Device,” with the authorization announcement on December 3, 2024. BOE Technology Group Co., Ltd. and Beijing BOE Technology Development Co., Ltd. have also been granted an invention patent for a technology titled “Quantum Dot Materials, Patterning Methods for Quantum Dot Films, and Quantum Dot Display Devices,” with the authorization announcement on November 29, 2024.
What is Quantum Dot Technology?
Quantum dot technology leverages the optical properties of inorganic semiconductor crystals at the nanoscale to improve display performance. The light emitted by quantum dots is highly concentrated at specific wavelengths, resulting in exceptional color purity. Quantum dots can be integrated with mainstream display panels such as LCD, OLED, and Mini LED, offering wide-ranging applications.
There are two main types of quantum dot technology: photoluminescence and electroluminescence. In the realm of photoluminescence, in 2019, TCL Electronics Holdings Limited (hereafter referred to as TCL Electronics) combined quantum dot technology with Mini LED, creating the QD-Mini LED large-screen display technology. TCL Electronics’ Mini LED products using quantum dot photoluminescence technology have become the global leader in sales. As for electroluminescence, we are at the forefront of this technology. At the 2024 SID International Display Week, we unveiled an electroluminescent quantum dot display alongside a South Korean company, delivering stunning color gamut and picture quality, as stated by Zhao Bin, Vice President and General Manager of R&D Center at TCL CSOT.
In addition, several publicly listed companies are also making strides in the quantum dot display field. Tianma Microelectronics Co., Ltd. (hereafter referred to as Tianma) has successfully launched quantum dot technology in its vehicle-mounted Mini LED products, which continue to ship in bulk to major global customers. Ningbo Jizhi Technology Co., Ltd., one of the earliest domestic companies involved in the R&D, production, and sale of optical films for displays, has successfully passed client verifications for its quantum dot films, with some clients already in mass production.
Building a Collaborative Technology Ecosystem Along the Industry Chain
Chinese companies have made significant achievements in quantum dot technology, and in the long term, this technology still holds immense potential for innovation. “In the coming years, there are still many aspects of electroluminescent quantum dot technology that require breakthroughs. For example, positive aging, which is a core technical challenge, as well as improving the efficiency of material luminescence. We hope more universities, research institutes, and companies can join us in tackling these challenges,” said Zhao Bin.
As Chinese companies push the boundaries of quantum dot technology and move to the forefront of global innovation, the integration of the upstream and downstream parts of the supply chain has become a new challenge. Some companies are placing great emphasis on establishing cooperation platforms to jointly build a new industry ecosystem.
For instance, TCL Technology Group Corporation is committed to promoting the deep integration of industry, academia, and research. At the 2024 TCL Global Technology Innovation Conference, the company signed cooperation agreements with top research institutions and organizations to explore cutting-edge technologies in fields such as semiconductor displays. The company is also working closely with upstream and downstream partners to promote industrial collaboration. Tianma has partnered with several universities, research institutes, and industry chain players to drive the deep integration of the innovation chain, industry chain, and capital chain, building an “innovation ecosystem” that closely connects government, industry, academia, research, finance, and application.
Guo Tao, Deputy Director of the China E-Commerce Expert Service Center, stated: “As innovations in display technologies, including quantum dot technology, enter uncharted territories, it becomes increasingly important for companies along the industry chain to jointly build a technological ecosystem. This not only accelerates the technology development process but also effectively integrates resources, improving the efficiency and competitiveness of the entire industry chain. More importantly, through collaboration, all parties can better manage risks, facilitating steady industry advancement.”
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