Abstract: Background and Research Questions Since 2018, the United States has adopted means such as "decoupling", "breaking supply chains", and "de-Sinicization" to block and suppress China's industrial technology upgrading, especially in the high-end chip manufacturing field. This has put China in a "chokepoint" dilemma. Against this backdrop, China has still achieved key technological breakthroughs in the chip field, as demonstrated by the release of the Huawei Mate60 series of mobile phones. Although previous studies have focused on tackling core and key technologies, most of them concentrated on problem definition and approaches, lacking empirical research on digital-enabled technological innovation. This study focuses on issues that urgently need to be explored, such as how enterprises can use digital technologies to achieve technological breakthroughs in an environment where "broken supply chains" coexist with the digital economy, what open-innovation measures to take, the specific role of digital technologies in this process, and the extent to which they promote technological breakthroughs. Methodology Taking A-share listed companies as samples, 20 cases were structurally sampled from chip and semiconductor component concept stocks according to the requirements of theoretical saturation. In-depth research was conducted on 12 enterprises significantly affected by "broken supply chains", and based on the logic of replicative co-occurrence, 4 typical cases with similar chip-manufacturing links were determined, covering enterprises in fields such as integrated circuit manufacturing, chip processing equipment, fiber lasers, and radio-frequency integrated circuits, to highlight the causal relationship between "broken supply chains" and technological breakthroughs. Data was collected by analyzing second-hand data such as annual reports, official websites, and public reports of typical case enterprises, as well as through interviews from multiple parties. The data analysis followed a process of dialogue with theory. First, the theoretical fields of systematic emergence theory, open innovation, and digital technology/platform were determined. Then, key information was extracted from the cases and summarized into first-order codes, which were verified through multiple channels. Subsequently, the first-order codes were clustered into second-order codes in combination with the theory. The authors independently coded and discussed to ensure theoretical consistency. Finally, the relationship between the codes and the theory was reviewed and iteratively adjusted, and discussions were also held with industry managers to ensure compliance with the original intention of the theory. Ultimately, nine first-order code categories and four second-order codes were obtained to reflect the open-innovation and digital-enabling mechanisms. Main Findings Discovery of Open-Innovation Approaches under the Impact of "Broken Supply Chains": "Decoupling" has ed enterprises to respond actively, with active open innovation. Vertical resource integration is manifested in standardizing supplier management, expanding the business chain, and strengthening cooperative relationships to achieve close technological cooperation. Horizontal resource integration includes strategic cooperation with universities, participation in industry standard-setting, and cooperation with internationally advantageous enterprises. For example, Company C rebuilt its supply chain, and Company B collaborated with universities to tackle key etching machine technologies, indicating that "decoupling" breaks the restrictions on knowledge flow and promotes technological innovation and the reconstruction of the supply-chain system. Discovery of the Digital-Enabling Mechanism in Open Innovation: The digital-enabling of digital technology is reflected in the advantages of information processing and the trust-strengthening mechanism, promoting information sharing and collaboration across the entire industrial chain. For example, Company A participated in standard-setting, and Company B used blockchain to share knowledge. The digital-enabling of digital platforms depends on technological enabling and has advantages such as low cost, achieving information connectivity and resource integration and expansion. For example, the platform of Company A connected the industrial chain to improve efficiency. Digital technology also accurately matches the flow of knowledge. For example, the platform of Company B provides diversified services to promote systematic emergence. Discovery of the Impact of Enterprise Heterogeneity: Relative technological advantages and enterprise size significantly affect enterprise performance. Companies A and B, with advanced technologies, are outstanding in platform ecosystems and standard alliances. Technology affects the improvement of the platform and the right to speak. The large-scale Company A uses digital technology to improve efficiency, reflecting the moderating role of scale in systematic emergence. Companies C and D are small-scale and have less advanced technologies, but Company C's horizontal integration and Company D's vertical integration have both promoted innovation, indicating that different relationship paths have a positive impact on systematic emergence. Theoretical Significance Regarding the issue of systematic technological breakthroughs, by integrating the characteristics of the digital economy era, this study deeply analyzes the technological breakthrough and digital-enabling mechanisms under the impact of "broken supply chains", differentiates the moderating effects of characteristic variables such as enterprise technological advantages and scale, combines open innovation, digital enabling, and enterprise characteristics to construct a theoretical model, filling the gaps in previous research on the internal mechanisms of digital enabling and the role of enterprise characteristics, and providing a new perspective and theoretical support for related research. Practical Implications At the industrial level, efforts should be made to strengthen the construction of digital infrastructure and the application of general digital technologies, promote policies to support information sharing and collaborative innovation in the industrial chain, and create a good industrial digital ecosystem to help enterprises achieve technological breakthroughs. At the enterprise level, enterprises should be encouraged to strengthen the construction of digital platforms. Large enterprises should play a demonstrative and leading role in exploring digital transformation paths, drive the coordinated development of small and medium-sized enterprises, use digital technologies to optimize supply-chain and knowledge-base management, improve innovation capabilities and efficiency, and respond to external shocks to achieve technological upgrading.