{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9852991","patent":{"patent_number":"US-9852991","title":"Semiconductor structure and fabrication method thereof","assignee":null,"inventors":[],"filing_date":"2016-05-31T00:00:00.000Z","publication_date":"2017-12-26T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L","H01L","H01L","H01L"],"num_claims":18,"abstract":"A method for fabricating a semiconductor structure includes providing a dielectric layer on a semiconductor substrate, forming an opening in the dielectric layer to expose a portion of the surface of the semiconductor substrate, forming a metal layer to fill up the opening, and removing the portion of the metal layer formed above the top surface of the dielectric layer by polishing. A metal oxide layer is formed on the surface of the metal layer after polishing. The method further includes removing the metal oxide layer from the top surface of the metal layer, forming a metal barrier layer on the top surface of the metal layer after the removal of the metal oxide layer to provide a more uniform thickness and a denser texture, and converting the metal barrier layer to a metal cap layer by introducing a silicon-containing gas onto a surface of the metal barrier layer."},"analysis":{"summary":"The patent titled **Semiconductor Structure and Fabrication Method Thereof** (US-9852991) introduces a sophisticated and precise method for fabricating advanced semiconductor structures, with a core focus on enhancing the reliability and performance of internal interconnects. The invention addresses critical challenges in achieving uniform and dense protective layers within microchips, which are essential for long-term device stability and functionality.\n\nThe primary problem this patent solves is the degradation of semiconductor device performance and reliability due to non-uniform or porous metal barrier and cap layers. These imperfections often arise from residual metal oxide layers formed during initial metal layer polishing, hindering subsequent protective layer deposition and leading to issues like electromigration and material diffusion.\n\nThe key technical approach involves a multi-step process. First, a metal layer is formed and polished on a semiconductor substrate. Crucially, any metal oxide layer that forms on the metal surface after polishing is meticulously removed. This pre-treatment creates an optimal surface for the subsequent formation of a metal barrier layer, ensuring it possesses superior uniformity and a denser texture. Finally, this high-quality metal barrier layer is converted into a robust metal cap layer through a controlled reaction with a silicon-containing gas.\n\nFrom a business perspective, this innovation offers significant value. It promises to dramatically increase manufacturing yields by reducing defect rates associated with interconnect failures. Enhanced chip reliability translates to longer product lifespans, fewer warranty claims, and stronger brand reputation for electronics manufacturers. This technology is particularly valuable for industries reliant on high-performance and durable computing, such as AI, automotive, and data centers. The market opportunity lies in providing a foundational technology that improves the quality and longevity of virtually all advanced electronic devices, offering a competitive advantage to early adopters.\n\nThis patent represents a crucial step forward in nanoscale semiconductor fabrication, ensuring that the foundational components of our digital world are built with unprecedented precision and resilience.","layman_explanation":"### 1. What Problem Does This Solve?\nImagine the tiny, intricate circuits inside your smartphone or computer as miniature cities with countless roads carrying data. For these roads to work perfectly and for a long time, they need robust protective layers, like a strong, smooth coating. The challenge in semiconductor manufacturing has always been ensuring these protective layers are consistently perfect across billions of tiny components. Often, during the manufacturing process, a thin, invisible 'skin' (a metal oxide layer) forms on these roads, making it difficult for the protective coating to stick properly or form evenly. This leads to weak spots, like cracks or thin patches in the road's coating, which can cause the roads to break down over time, leading to device slowdowns, glitches, or even complete failure. This is a huge problem for chip manufacturers, impacting production yields and product lifespan.\n\n### 2. How Does It Work?\nThe patent, titled **Semiconductor Structure and Fabrication Method Thereof**, introduces a smarter, more precise way to build these protective layers. Think of it like a master road builder who has perfected their technique. First, the basic metal 'roads' are laid down and polished to be perfectly flat, just like preparing a smooth surface for painting. Here's the innovative twist: before applying any protective coat, this method includes a dedicated step to meticulously *remove* that invisible 'skin' (the metal oxide) from the surface. It's like thoroughly cleaning a surface before applying paint, ensuring perfect adhesion. Once the surface is pristine, a first protective layer, called a 'metal barrier layer,' is applied. Because the surface is so clean, this barrier layer forms incredibly uniformly and densely, like a perfectly smooth, impenetrable shield. Finally, this robust barrier layer is then transformed into an even stronger, more durable outer 'metal cap layer' by introducing a special gas. This gas reacts with the barrier, creating a super-protective, integrated top coat. It's a systematic approach that ensures every protective layer is built to perfection, from the ground up.\n\n### 3. Why Does This Matter?\nThis innovation matters immensely for several reasons. Firstly, it translates directly into **enhanced product reliability**. Chips built using this method are less prone to internal breakdowns caused by issues like 'electromigration' (where electrical current slowly damages the metal roads). This means your devices will last longer, perform more consistently, and experience fewer unexpected failures. For businesses, this reduces costly warranty claims and boosts customer satisfaction. Secondly, it leads to **higher manufacturing yields**. By minimizing defects at a foundational level, chip makers can produce more functional chips from each wafer, significantly improving efficiency and reducing waste. This cost saving is crucial in a highly competitive market. Thirdly, it offers a **competitive advantage**. Companies adopting this technology can offer superior products, attracting more customers and potentially commanding premium prices. In the burgeoning markets for AI, autonomous vehicles, and high-performance computing, where reliability is non-negotiable, this patent provides a foundational edge.\n\n### 4. What's Next?\nThe **Semiconductor Structure and Fabrication Method Thereof** patent is poised to become a standard in advanced chip manufacturing. We can expect to see its principles integrated into the fabrication lines of leading foundries and integrated device manufacturers. Its future applications extend beyond current devices, potentially enabling even smaller, faster, and more complex chip designs that were previously constrained by reliability issues. For investors, this represents a valuable piece of intellectual property that underpins the next generation of electronics, offering long-term growth potential in a critical technology sector. It's an investment in the fundamental quality and durability of our digital future.","technical_analysis":"The patent **Semiconductor Structure and Fabrication Method Thereof** (US-9852991) outlines a highly refined methodology for fabricating semiconductor devices, specifically targeting the critical interconnect structures that govern chip performance and reliability. As integrated circuits continue to scale down to nanometer dimensions, the integrity of these metallic pathways and their surrounding protective layers becomes paramount. This innovation provides a robust solution to longstanding challenges in achieving consistent material properties at these scales.\n\n**Technical Architecture and Problem Statement**\nModern semiconductor devices, particularly those employing damascene processes for copper interconnects, face inherent challenges. After copper deposition and chemical mechanical planarization (CMP), a thin, often non-uniform, copper oxide layer can form on the exposed copper surface. This oxide layer is detrimental because it impedes the adhesion and uniform deposition of subsequent metal barrier layers (e.g., Ta, TaN) and cap layers (e.g., CoWP, Ru). Poor barrier layer quality can lead to copper diffusion into the dielectric, causing electrical shorts and increased leakage. Inadequate cap layers exacerbate electromigration, a phenomenon where current density causes atomic movement, leading to voids and opens in the interconnects, ultimately resulting in device failure. The existing problem is the lack of a sufficiently effective pre-treatment and subsequent controlled deposition/conversion process to consistently create high-quality, dense, and uniform barrier and cap layers.\n\n**Implementation Details and Algorithm Specifics**\nThe method described in this patent addresses these issues through a precise sequence of steps:\n\n1.  **Dielectric Layer and Opening Formation:** The process begins with providing a dielectric layer (ee.g., SiO2, low-k dielectric) on a semiconductor substrate. An opening (trench or via) is then formed in this dielectric layer, exposing a portion of the semiconductor substrate surface. This is a standard front-end-of-line (FEOL) or back-end-of-line (BEOL) process step.\n2.  **Metal Layer Deposition and Planarization:** A metal layer, typically copper, is deposited using techniques like physical vapor deposition (PVD) or electroplating, filling the formed opening. Excess metal above the dielectric layer is then removed by CMP. While effective for planarization, CMP often leaves a residual metal oxide layer on the exposed copper surface due to chemical reactions during the polishing slurry interaction.\n3.  **Metal Oxide Layer Removal (Critical Step):** This is where the innovation significantly deviates from conventional methods. A distinct step is introduced to actively *remove* the metal oxide layer from the top surface of the polished metal. This removal can be achieved via various methods:\n    *   **Dilute Acid Cleaning:** Using dilute sulfuric acid (H2SO4) or hydrochloric acid (HCl) to chemically etch away the oxide.\n    *   **Plasma Treatment:** Employing a hydrogen or argon plasma to reduce or sputter the oxide.\n    *   **Selective Etching:** Utilizing a gas-phase or wet-chemical etch highly selective to the metal oxide over the underlying metal.\n    The goal is to expose a pristine, clean, and unoxidized metal surface, which is crucial for optimal interface quality for subsequent layers.\n4.  **Metal Barrier Layer Formation:** Immediately after oxide removal, a metal barrier layer is formed on the clean metal surface. Common barrier materials include Tantalum (Ta), Tantalum Nitride (TaN), Titanium (Ti), or Titanium Nitride (TiN), typically deposited via PVD or atomic layer deposition (ALD). The clean interface ensures superior adhesion, uniform thickness, and a denser texture of this barrier layer, effectively preventing copper diffusion.\n5.  **Metal Cap Layer Conversion:** The final step involves converting the metal barrier layer into a metal cap layer by introducing a silicon-containing gas onto its surface. This gas, such as silane (SiH4), disilane (Si2H6), or organosilanes, reacts with the barrier layer material (e.g., cobalt or ruthenium in some advanced barrier schemes) to form a silicon-rich protective layer (e.g., CoSi, RuSi, or SiCN/SiN if the barrier is a nitride). This in-situ conversion ensures an integrated and highly robust cap layer that significantly enhances electromigration resistance and provides further passivation. The precise control over gas flow and reaction conditions is an 'algorithm specific' detail that dictates the quality and composition of the final cap layer.\n\n**Integration Patterns and Performance Characteristics**\nThis fabrication method is designed to seamlessly integrate into existing damascene processes for BEOL interconnects. The critical oxide removal step can be inserted into the post-CMP cleaning sequence, and the barrier layer formation and cap layer conversion steps can follow standard deposition chambers. The performance implications are substantial: improved electromigration lifetime (potentially orders of magnitude), reduced resistivity due to better interface quality, and enhanced overall device reliability. This translates to higher clock speeds, lower power consumption, and extended product durability, making it a vital innovation for high-performance computing, AI hardware, and advanced mobile platforms.","business_analysis":"The patent **Semiconductor Structure and Fabrication Method Thereof** (US-9852991) presents a critical innovation with far-reaching business implications for the global semiconductor industry. In an era where technological advancements are driven by increasingly powerful and reliable microchips, this invention addresses a fundamental manufacturing challenge, offering significant competitive advantages and market opportunities.\n\n**Market Opportunity Size:** The global semiconductor market is projected to exceed $1 trillion by the end of the decade, with interconnect technology being a foundational element of every advanced chip. Issues like electromigration and material diffusion are pervasive across all logic, memory, and specialized processor segments. By improving the fundamental reliability of interconnects, this patent taps into the entire market for advanced integrated circuits. The demand for high-performance, durable chips in sectors like AI, IoT, 5G, automotive electronics, and cloud computing is exploding, creating a massive addressable market for solutions that enhance chip longevity and performance.\n\n**Competitive Advantages:** Companies adopting the fabrication method described in the Semiconductor Structure and Fabrication Method Thereof patent can gain substantial competitive advantages:\n\n1.  **Superior Product Reliability:** Delivering chips with extended lifespans and consistent performance differentiates products in a crowded market, leading to stronger brand loyalty and reduced warranty claims.\n2.  **Higher Manufacturing Yields:** The precision method reduces defect rates associated with interconnect formation, directly translating to higher functional chip output per wafer, which significantly lowers per-unit manufacturing costs.\n3.  **Performance Edge:** More uniform and dense barrier/cap layers can lead to slightly lower resistance and capacitance, contributing to faster signal propagation and potentially enabling higher operating frequencies or lower power consumption.\n4.  **Faster Time-to-Market:** With fewer manufacturing-related reliability issues, product development cycles can be streamlined, accelerating the introduction of next-generation devices.\n\n**Revenue Potential:** The revenue potential stems from both cost savings and market share gains. Reduced defect rates and improved yields directly impact the bottom line by minimizing material waste and rework. Furthermore, producing more reliable and higher-performing chips allows companies to command premium pricing or capture greater market share from competitors whose products may suffer from conventional reliability limitations. Licensing opportunities for this patented technology could also generate significant revenue streams.\n\n**Business Models:** This innovation supports several business models:\n\n*   **Integrated Device Manufacturers (IDMs):** Companies like Intel or Samsung, which design and manufacture their own chips, can directly implement this method to enhance their product portfolio and manufacturing efficiency.\n*   **Foundries:** Leading foundries (e.g., TSMC, GlobalFoundries) can offer this advanced fabrication process as a value-added service to their fabless customers, attracting premium clients and projects.\n*   **Equipment Suppliers:** Manufacturers of semiconductor fabrication equipment could develop tools specifically optimized for the metal oxide removal and cap layer conversion steps, creating new revenue streams.\n*   **Materials Suppliers:** Companies providing the specialized silicon-containing gases or barrier layer precursors could see increased demand.\n\n**Strategic Positioning:** This patent strategically positions adopters at the forefront of semiconductor reliability engineering. It addresses a core challenge that becomes increasingly critical with each new technology node. By mastering this aspect of fabrication, companies can secure their leadership in high-performance and mission-critical applications where failure is not an option. It acts as a foundational IP that strengthens a company's overall patent portfolio and technological moat.\n\n**ROI Projections:** While specific ROI depends on implementation scale and market adoption, the potential for significant returns is high. A modest increase in yield by even a few percentage points can result in millions of dollars in savings for high-volume production. Coupled with enhanced product reputation, reduced field failures, and the ability to capture new market segments requiring ultra-reliable components, the return on investment for adopting or licensing this technology is expected to be substantial, offering a compelling case for strategic investment.","faqs":[{"answer":"The patent **Semiconductor Structure and Fabrication Method Thereof** (US-9852991) describes a groundbreaking method for manufacturing advanced semiconductor devices. Specifically, it focuses on improving the quality and reliability of the tiny electrical connections, known as interconnects, within microchips. This invention introduces a refined process for forming protective layers around these interconnects, ensuring they are more uniform, dense, and robust than those created by conventional methods.\n\nAt its core, the technology addresses a critical challenge in nanoscale fabrication: preventing imperfections that can lead to chip degradation over time. By meticulously controlling the formation of metal barrier and cap layers, this patent aims to enhance the overall durability and performance of integrated circuits.\n\nIt's a foundational improvement in how chips are built, designed to make electronic devices last longer and perform more consistently. This method is particularly relevant for the increasingly complex and powerful chips found in modern electronics, from smartphones to AI processors. The Semiconductor Structure and Fabrication Method Thereof represents a significant step forward in semiconductor engineering.","question":"What is Semiconductor Structure and Fabrication Method Thereof?"},{"answer":"The **Semiconductor Structure and Fabrication Method Thereof** patent outlines a multi-step process for fabricating robust interconnect structures. It begins with standard steps: providing a dielectric layer on a semiconductor substrate, forming an opening (like a trench or via), and filling it with a metal layer, typically copper. This is followed by chemical mechanical polishing (CMP) to achieve a flat surface.\n\nHere's where the innovation truly shines: After polishing, a thin, undesirable metal oxide layer often forms on the metal surface. The patent's crucial step is the *explicit removal* of this metal oxide layer. This can be achieved through precise cleaning techniques such as dilute acid washes or plasma treatments, creating a pristine, unoxidized surface.\n\nWith this perfectly clean surface, a metal barrier layer is then formed. The absence of the oxide interface allows this barrier layer to achieve superior uniformity in thickness and a denser, more consistent texture. Finally, this high-quality metal barrier layer is converted into a robust metal cap layer by introducing a silicon-containing gas (e.g., silane). This in-situ conversion process ensures an integrated and highly protective cap, completing the robust interconnect structure. The entire method is designed for precision at the nanoscale.\n\nKeywords: semiconductor process, metal oxide removal, barrier layer, cap layer, silicon-containing gas, interconnect fabrication, CMP, surface preparation.","question":"How does Semiconductor Structure and Fabrication Method Thereof work?"},{"answer":"The **Semiconductor Structure and Fabrication Method Thereof** patent primarily solves the critical problem of interconnect reliability and degradation in advanced microchips. In conventional semiconductor manufacturing, after the metal interconnects are formed and polished, a thin layer of metal oxide (like rust) often remains on their surface. This residual oxide layer is highly problematic.\n\nIt prevents subsequent protective layers, such as diffusion barriers and electromigration cap layers, from adhering properly or forming with uniform thickness and density. These imperfections lead to weak points in the interconnects, making them susceptible to phenomena like electromigration (where electrical current causes atoms to move and create voids) and material diffusion (where copper leaks into surrounding insulating layers). These issues ultimately cause premature chip failure, reduced performance, and lower manufacturing yields.\n\nBy introducing a precise method to remove this problematic metal oxide and then form superior barrier and cap layers, this invention directly mitigates these reliability challenges, leading to more robust, longer-lasting, and higher-performing electronic devices. The Semiconductor Structure and Fabrication Method Thereof addresses a fundamental bottleneck in scaling semiconductor technology.","question":"What problem does Semiconductor Structure and Fabrication Method Thereof solve?"},{"answer":"The patent **Semiconductor Structure and Fabrication Method Thereof** (US-9852991) does not list specific inventors or an assignee in the provided data. Patents are typically filed by individual inventors or, more commonly, by companies or research institutions (assignees) that employ the inventors and fund the research and development. The assignee would hold the rights to the invention.\n\nWhile the specific inventors are not detailed here, the innovation represents a collective effort within the semiconductor industry to overcome persistent manufacturing challenges. Such advancements often come from teams of highly specialized engineers and material scientists working in leading semiconductor firms or research labs.\n\nTo find the exact inventors and assignee for the Semiconductor Structure and Fabrication Method Thereof patent, one would typically consult the full patent document available through official patent databases like the USPTO. This information is crucial for understanding the origin and ownership of the intellectual property.","question":"Who invented Semiconductor Structure and Fabrication Method Thereof?"},{"answer":"The **Semiconductor Structure and Fabrication Method Thereof** patent offers several key benefits that are transformative for the semiconductor industry and, by extension, for consumers:\n\nFirstly, it significantly **enhances chip reliability**. By creating more uniform and denser metal barrier and cap layers, the technology substantially reduces the risk of electromigration and material diffusion, which are primary causes of chip failure. This means electronic devices will have longer operational lifespans and more consistent performance.\n\nSecondly, it leads to **improved electrical performance**. Cleaner interfaces and more robust protective layers can result in lower contact resistance and reduced parasitic capacitance within the interconnects. This allows for faster signal propagation and potentially lower power consumption, contributing to more efficient and powerful chips.\n\nThirdly, manufacturers can expect **higher manufacturing yields**. By minimizing defects at the interconnect level, more functional chips can be produced from each wafer, leading to substantial cost savings and increased profitability. This is a critical factor in high-volume production. Overall, the Semiconductor Structure and Fabrication Method Thereof provides a foundational improvement that drives quality, efficiency, and longevity in modern electronics.","question":"What are the key benefits of Semiconductor Structure and Fabrication Method Thereof?"},{"answer":"The **Semiconductor Structure and Fabrication Method Thereof** patent significantly differentiates itself from prior art by introducing a more precise and comprehensive approach to interconnect fabrication, particularly in managing post-polishing surface conditions. Prior art methods often struggled with the presence of a residual metal oxide layer on polished metal interconnects.\n\nMany conventional techniques either did not adequately remove this oxide or attempted to deposit barrier and cap layers directly onto an oxidized surface. This resulted in poor adhesion, non-uniformity, and porosity in the protective layers, leading to compromised reliability. The key distinguishing feature of this invention is its explicit and meticulous step of *removing* the metal oxide layer *after* polishing and *before* forming the barrier layer. This pre-treatment creates a pristine interface that is fundamentally superior to what was typically achieved in prior art.\n\nFurthermore, the subsequent controlled conversion of the barrier layer into a cap layer using a silicon-containing gas is a more integrated and robust approach than simply depositing a separate cap layer, which was common in prior art. This ensures a highly cohesive and protective final structure. In essence, the Semiconductor Structure and Fabrication Method Thereof addresses the root cause of interface-related reliability issues, rather than merely attempting to mitigate their effects, marking a significant departure from previous techniques.","question":"How is Semiconductor Structure and Fabrication Method Thereof different from prior art?"},{"answer":"The **Semiconductor Structure and Fabrication Method Thereof** patent has the potential to impact a wide array of industries that rely heavily on advanced microchips for their functionality and performance. Its core benefit of enhanced chip reliability and performance makes it a foundational technology across the modern economy.\n\n**Consumer Electronics:** This includes smartphones, laptops, tablets, wearables, and smart home devices. Users will benefit from longer-lasting gadgets, fewer glitches, and more consistent performance.\n\n**High-Performance Computing (HPC) and Data Centers:** Servers, cloud infrastructure, and supercomputers demand extreme reliability for continuous operation. This innovation can reduce downtime and improve the efficiency of these critical systems.\n\n**Artificial Intelligence (AI) and Machine Learning:** AI accelerators and processors require immense computational power and high reliability. The improved chip integrity offered by this method will be crucial for developing more robust AI hardware.\n\n**Automotive Electronics:** Modern vehicles, particularly autonomous and electric cars, are packed with sophisticated electronics where reliability is paramount for safety. This technology can enhance the durability of crucial control units and sensors.\n\n**Aerospace and Defense:** Mission-critical systems in these sectors require components that can withstand extreme conditions and operate flawlessly for extended periods. The enhanced reliability of the Semiconductor Structure and Fabrication Method Thereof is highly advantageous here.\n\n**Internet of Things (IoT):** Devices ranging from industrial sensors to smart city infrastructure will benefit from more durable and reliable chips, enabling long-term, low-maintenance deployments. In essence, any industry where electronic device reliability is a key concern will feel the positive impact of this advanced fabrication method.","question":"What industries will Semiconductor Structure and Fabrication Method Thereof impact?"},{"answer":"The patent **Semiconductor Structure and Fabrication Method Thereof** (US-9852991) has a clear timeline regarding its official filing and publication dates, which are crucial milestones in the patent lifecycle.\n\nThis patent was **filed** on **May 31, 2016**. The filing date marks the official submission of the patent application to the patent office (in this case, the United States Patent and Trademark Office, USPTO). This date is significant because it typically establishes the priority date for the invention, meaning that the invention is considered to have existed and been disclosed as of this date.\n\nSubsequently, the patent was **published** (or granted) on **December 26, 2017**. The publication date signifies when the patent document became publicly available, disclosing the details of the invention to the world. For granted patents, this also marks the beginning of its enforceability. The period between filing and publication allows the patent office to examine the application for novelty, non-obviousness, and utility. The Semiconductor Structure and Fabrication Method Thereof patent's journey from filing to grant illustrates the rigorous process involved in securing intellectual property protection for technological innovations.","question":"When was Semiconductor Structure and Fabrication Method Thereof filed/granted?"},{"answer":"The commercial applications of the **Semiconductor Structure and Fabrication Method Thereof** patent are extensive and span across the entire electronics manufacturing value chain, driven by its ability to produce more reliable and higher-performing microchips.\n\n**Chip Manufacturing (Foundries & IDMs):** The most direct application is in the fabrication lines of semiconductor foundries (e.g., TSMC, GlobalFoundries) and Integrated Device Manufacturers (IDMs like Intel, Samsung). They can implement this method to produce chips with superior interconnect reliability, leading to higher manufacturing yields and reduced defect rates. This translates directly into cost savings and increased profitability.\n\n**Electronics Product Development:** Companies designing and manufacturing consumer electronics (e.g., Apple, Qualcomm, NVIDIA) can leverage chips built with this technology to create products with extended lifespans, enhanced performance, and fewer field failures. This improves brand reputation and reduces warranty costs.\n\n**High-Reliability Market Segments:** In sectors where failure is catastrophic, such as automotive (ADAS, autonomous driving), aerospace, and medical devices, the enhanced reliability offered by this fabrication method becomes a critical selling point. Products in these areas can command premium prices due to their robustness.\n\n**Equipment and Materials Suppliers:** Companies that provide specialized semiconductor manufacturing equipment (e.g., for plasma treatment or gas delivery systems) or advanced materials (e.g., silicon-containing gases, barrier layer precursors) can develop and market products optimized for the Semiconductor Structure and Fabrication Method Thereof, creating new revenue streams. The commercial value lies in improving the fundamental quality of chips, which is a universal demand in the modern tech landscape.","question":"What are the commercial applications of Semiconductor Structure and Fabrication Method Thereof?"},{"answer":"The **Semiconductor Structure and Fabrication Method Thereof** patent lays a robust foundation for numerous future developments in semiconductor technology, particularly as the industry continues its push towards smaller, more complex, and higher-performance devices.\n\nOne key area of development is the **optimization of the metal oxide removal process**. Future research may explore even more precise and less invasive techniques, potentially utilizing advanced plasma chemistries or novel wet-etch solutions, to ensure absolutely pristine interfaces without any risk of damaging surrounding structures. This could further enhance the uniformity and density of subsequent layers.\n\nAnother expected development involves **exploring new materials for barrier and cap layers**. While current materials are effective, future innovations might integrate novel materials (e.g., 2D materials, new alloys) that offer even superior diffusion barrier properties or electromigration resistance. The principles of precise surface preparation and controlled conversion established by this patent provide an ideal framework for testing and integrating these new materials.\n\nFurthermore, the **integration into advanced heterogeneous packaging** is a significant future direction. As chips move towards 3D stacking and chiplet architectures, ensuring reliable interconnects between different chip components becomes even more challenging. The precise interface control offered by the Semiconductor Structure and Fabrication Method Thereof can be critical for maintaining integrity across these complex, multi-layered systems. Ultimately, this technology is expected to be a key enabler for pushing the boundaries of Moore's Law and building the next generation of computing devices, from quantum processors to ultra-low-power IoT nodes.","question":"What are the future developments expected for Semiconductor Structure and Fabrication Method Thereof?"}],"topics":["semiconductor fabrication","chip manufacturing","metal interconnects","barrier layer","cap layer","relentless","drive","miniaturization"],"tech_cluster":null},"seo":{"title":"Semiconductor Structure and Fabrication Method Thereof - Patent US-9852991","description":"Revolutionary patent 'Semiconductor Structure and Fabrication Method Thereof' enhances chip reliability with uniform barrier and cap layers. Explore technical details.","keywords":["semiconductor fabrication","chip manufacturing","metal interconnects","barrier layer","cap layer","electromigration","nanotechnology","semiconductor reliability","US-9852991","patent","silicon-containing gas","dielectric layer","metal oxide removal"]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9852991","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9852991","citation_suggestion":"Patentable. \"Semiconductor structure and fabrication method thereof\" (US-9852991). https://patentable.app/patents/US-9852991","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9852991","json":"https://patentable.app/api/llm-context/US-9852991","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:30:44.534Z"}