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维信诺科技股份有限公司关于为全资公司提供担保的进展公告
Shang Hai Zheng Quan Bao· 2025-09-05 21:36
Group 1 - The company has approved a total guarantee amount not exceeding RMB 22.62 billion for the year 2025 for its subsidiaries and itself [3][19] - The company has provided guarantees that exceed 100% of its latest audited net assets, with specific amounts exceeding 50% and 30% for different categories [2][18] - The company has entered into a patent exclusive licensing agreement, resulting in a one-time payment of RMB 75 million from Jiangsu Baohan Leasing Co., Ltd. to its wholly-owned subsidiary Kunshan Institute [4][5] Group 2 - The company has a total guarantee balance of RMB 1910.51 million after the recent guarantees, which is 344.27% of its audited net assets for 2024 [15][31] - The company has no overdue guarantees and has not been involved in any litigation related to guarantees [15][31] - The company’s board believes that the guarantees provided by its wholly-owned subsidiary are beneficial for meeting operational funding needs and do not harm the interests of shareholders [30]
材料新突破!科学家将绝缘体变成半导体
半导体芯闻· 2025-06-16 10:13
Core Viewpoint - A groundbreaking discovery from the University of Michigan reveals that a new type of silicone resin can function as a semiconductor, challenging the long-held belief that silicone materials are merely insulators [3][9]. Group 1: Semiconductor Properties - The new silicone copolymer exhibits semiconductor properties, enabling applications in flexible electronics, new display technologies, and wearable sensors [3][5]. - Traditional semiconductors are rigid, while silicone resins offer the potential for flexible electronic products that can display various colors [5]. Group 2: Molecular Structure and Conductivity - The molecular structure of organic silicone consists of alternating silicon and oxygen atoms (Si—O—Si), with organic groups attached to the silicon atoms. Cross-linking of polymer chains leads to various three-dimensional structures, altering physical properties [7]. - The discovery of the copolymer's conductivity potential arose from the interaction of electrons through overlapping Si—O—Si bonds, allowing for charge flow [7]. Group 3: Color Spectrum and Light Emission - The semiconductor characteristics of silicone copolymers allow for a rich color spectrum, with electron transitions between ground and excited states determining light emission [8]. - Researchers demonstrated the relationship between chain length and light absorption/emission by arranging copolymers of varying lengths in test tubes, resulting in a rainbow effect under UV light [8].