{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9853116","patent":{"patent_number":"US-9853116","title":"Partial sacrificial dummy gate with CMOS device with high-k metal gate","assignee":null,"inventors":[],"filing_date":"2015-12-14T00:00:00.000Z","publication_date":"2017-12-26T00:00:00.000Z","cpc_codes":["H01L"],"num_claims":9,"abstract":"A gate structure in a semiconductor device includes: a gate stack formed on a substrate with three sections, a bottom portion, a top portion, and a sacrificial cap layer over the top portion; gate spacers, source and drain regions, a nitride encapsulation over top and sidewalls of the gate stack after removal of the sacrificial cap layer, an organic planarizing layer over the nitride encapsulation, planarizing the encapsulation, and silicidation performed over the source and drain regions and the bottom portion after removal of the nitride encapsulation, the organic planarizing layer, and the top portion of the gate stack."},"analysis":{"summary":"The **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** patent (US-9853116) introduces a sophisticated fabrication method for advanced Complementary Metal-Oxide-Semiconductor (CMOS) devices, specifically addressing challenges associated with integrating high-k (high dielectric constant) metal gates. The core innovation lies in a meticulously engineered gate structure and a precise, multi-stage manufacturing process.\n\nThe problem this patent solves revolves around the difficulties in maintaining the integrity and optimal electrical properties of high-k metal gates during the harsh, high-temperature steps of semiconductor manufacturing. Traditional methods often lead to material degradation, interface defects, and variability in device performance, hindering the ability to scale transistors further for enhanced speed and power efficiency.\n\nThis technology's key technical approach involves constructing a gate stack with three distinct sections: a bottom portion, a top portion, and a temporary sacrificial cap layer. Critical steps include forming gate spacers and source/drain regions, followed by the strategic removal of the sacrificial cap. A protective nitride encapsulation then covers the gate stack, further shielded by an organic planarizing layer. The ingenuity lies in the subsequent, controlled removal of these protective layers, and even the top portion of the gate stack, before a final silicidation step is performed over the source/drain regions and the remaining bottom gate portion. This sequence ensures maximal protection of sensitive materials and precise contact formation.\n\nThe business value and applications are substantial. This innovation enables the production of smaller, faster, and more energy-efficient microchips, which are fundamental to virtually all modern electronic devices. It provides semiconductor manufacturers with a robust, high-yield process for creating next-generation transistors, leading to improved product performance, reduced power consumption, and enhanced reliability across a wide range of applications, from smartphones and IoT devices to high-performance computing and artificial intelligence accelerators.\n\nThe market opportunity is immense, as the demand for advanced semiconductors continues to grow exponentially. By offering a superior method for high-k metal gate integration, this patent positions adopters to gain a significant competitive advantage, reduce manufacturing costs associated with defects, and accelerate the development of future electronic systems. It underpins the continued progress of Moore's Law, ensuring that the industry can meet the ever-increasing performance demands of the digital age.","layman_explanation":"### What Problem Does This Solve?\n\nImagine you're trying to build a complex, miniature engine, but some of its most crucial, delicate parts are exposed to harsh conditions during the assembly process. This is a lot like what happens in semiconductor manufacturing. Modern microchips rely on billions of tiny switches called transistors. To make these transistors faster and more energy-efficient, especially in our ever-shrinking devices, engineers have turned to advanced materials like 'high-k (high dielectric constant) metal gates'. These gates are essential for controlling electricity flow with minimal leakage.\n\nThe core problem is that these high-k metal gates are incredibly sensitive. During the chip's manufacturing, there are many high-temperature steps and abrasive processes (like polishing) that can damage these delicate gates. This damage leads to several business-critical issues: transistors that don't perform as expected (slower, leak more power), lower manufacturing yields (more wasted chips), and ultimately, less reliable electronic products. Existing solutions often involve trade-offs, either compromising on performance or increasing manufacturing complexity and cost. This patent seeks to resolve these trade-offs, enabling both superior performance and more robust manufacturing.\n\n### How Does It Work?\n\nThe **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** patent introduces a clever, multi-stage approach to protect these sensitive components. Think of it like building a very special, delicate sculpture inside a protective mold, and then carefully removing the mold to reveal the finished masterpiece.\n\n1.  **Initial Protection**: First, a foundational gate structure is built with three layers: a base, a top, and a temporary, 'sacrificial' cap on top. This temporary cap acts as the initial protective mold, allowing other parts of the transistor (like the \"source\" and \"drain\" regions) to be formed through high-temperature processes without damaging the delicate base of the gate.\n2.  **Reinforced Shielding**: Once the initial, rough work is done, the sacrificial cap is removed. Then, a strong 'nitride encapsulation' layer is applied, essentially creating a robust protective blanket over the delicate gate. On top of this, an 'organic planarizing layer' is added. This layer is crucial for making the entire surface perfectly flat, which is essential for precise subsequent manufacturing steps, ensuring consistency across billions of transistors.\n3.  **Precise Unveiling**: The true elegance of this system lies in its selective removal process. When all the heavy-duty manufacturing and planarization are complete, these protective layers – the nitride and the organic planarizing layer – are *carefully and precisely stripped away*. What's more, even the *top portion* of the initial gate structure is removed, leaving only the critical, perfectly preserved bottom portion of the high-k metal gate exposed.\n4.  **Final Touches**: With the sensitive gate perfectly exposed, a final process called 'silicidation' is performed. This creates ultra-low-resistance electrical contacts on the exposed gate and source/drain regions, maximizing the transistor's speed and efficiency.\n\nIn essence, this technology ensures that the most vulnerable, performance-critical parts of the transistor are shielded throughout the most damaging manufacturing stages, only to be precisely unveiled and finalized when all risks are passed.\n\n### Why Does This Matter?\n\nThis innovation has significant market impact and offers substantial opportunities. In a world increasingly reliant on advanced electronics, the ability to produce superior transistors is a key differentiator. This patent allows chip manufacturers to:\n\n*   **Boost Performance**: Develop microchips that are fundamentally faster and more responsive, directly translating to better performance in everything from consumer electronics (smartphones, laptops) to enterprise solutions (data centers, AI accelerators).\n*   **Improve Energy Efficiency**: Reduce power leakage in transistors, leading to devices with longer battery life and lower operational costs for large-scale computing infrastructures.\n*   **Increase Manufacturing Yields**: By minimizing damage and ensuring consistent quality, chip factories can produce more functional chips per wafer, significantly reducing waste and manufacturing costs. This directly impacts profit margins and competitive pricing.\n*   **Accelerate Innovation**: This robust fabrication method enables the continued miniaturization of transistors, paving the way for even more complex and powerful integrated circuits, driving progress in fields like artificial intelligence, the Internet of Things, and autonomous vehicles.\n\nFor investors, this technology represents a foundational improvement in a critical industry, offering a strong competitive moat for companies that adopt it. The ROI comes from higher revenue potential through superior products, reduced operational expenses, and the ability to lead the market in next-generation silicon.\n\n### What's Next?\n\nThe **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** is not just a solution for today's challenges; it's a stepping stone for future advancements. We can expect to see wider adoption of this or similar methodologies in leading-edge semiconductor foundries over the next 3-5 years, becoming standard practice for advanced node manufacturing. This innovation will be crucial for the successful implementation of even more complex transistor architectures, such as Gate-All-Around (GAA) FETs, which are essential for future scaling. Its impact will extend beyond traditional computing, influencing specialized chip designs for quantum computing, neuromorphic computing, and advanced sensor technologies, ensuring that the pace of innovation in electronics continues unabated.","technical_analysis":"The **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** patent (US-9853116) addresses a pivotal challenge in modern semiconductor manufacturing: the reliable and high-performance integration of high-k (high dielectric constant) metal gates (HKMG) into Complementary Metal-Oxide-Semiconductor (CMOS) devices. This technical analysis delves into the architectural specifics, implementation details, and performance implications of this innovative approach.\n\n**Technical Architecture and Problem Statement**\n\nThe core problem in HKMG integration, particularly in 'gate-last' or 'replacement metal gate' (RMG) processes, is the susceptibility of high-k dielectrics and metal gates to degradation during high-temperature annealing steps (e.g., for dopant activation in source/drain regions) and mechanical stress from chemical mechanical planarization (CMP). This degradation can lead to critical issues such as threshold voltage (Vt) shifts, increased gate leakage current, reduced carrier mobility, and overall device reliability concerns. Prior art often struggled with achieving a consistent, high-quality interface between the high-k dielectric and the silicon channel, as well as maintaining precise gate dimensions.\n\nThis patent proposes a refined gate structure and a sequence of fabrication steps designed to circumvent these limitations. The initial gate stack is formed on a substrate and comprises three distinct sections: a bottom portion (likely the high-k dielectric and initial metal layer), a top portion (often a sacrificial polysilicon or amorphous silicon layer), and a sacrificial cap layer (e.g., silicon nitride or oxide) over the top portion. This multi-layered dummy gate provides structural integrity and defines the gate region for subsequent processing.\n\n**Implementation Details and Process Flow**\n\n1.  **Initial Gate Stack Formation**: A foundational gate stack with the bottom, top, and sacrificial cap layers is deposited and patterned on the silicon substrate.\n2.  **Gate Spacers and Source/Drain Formation**: Following the gate patterning, dielectric gate spacers are formed on the sidewalls of the initial gate stack. Subsequently, ion implantation and activation anneals are performed to create the source and drain regions in the substrate. During these high-temperature steps, the sacrificial cap and the top portion of the dummy gate protect the more sensitive bottom portion (high-k dielectric and initial metal gate).\n3.  **Sacrificial Cap Removal**: The sacrificial cap layer is selectively removed. This step is crucial for preparing the gate stack for further protective layers.\n4.  **Nitride Encapsulation**: A nitride encapsulation layer is deposited over the entire structure, specifically covering the top and sidewalls of the remaining gate stack. This nitride layer acts as a robust protective barrier during subsequent CMP processes and any remaining high-thermal budget steps. Its mechanical strength helps prevent damage to the underlying gate materials.\n5.  **Organic Planarizing Layer (OPL) Application**: An organic planarizing layer is then applied over the nitride encapsulation. The OPL is critical for achieving global planarization across the wafer. This flat surface is essential for precise lithography and subsequent interconnect layer formation, minimizing variations in feature sizes and improving overall manufacturing yield.\n6.  **Selective Layer Removal**: This is a key innovation. The process involves a highly controlled, sequential removal of layers:\n    *   First, the nitride encapsulation is removed.\n    *   Second, the organic planarizing layer is stripped away.\n    *   Third, the top portion of the gate stack is removed. This step reveals the bottom portion of the gate stack, which contains the critical high-k dielectric and final metal gate material, as well as the source and drain regions.\n7.  **Silicidation**: Finally, silicidation is performed. This involves reacting a metal (e.g., Ni, Co) with the exposed silicon in the source, drain, and the bottom portion of the gate to form low-resistance metal silicides. This significantly reduces contact resistance, which is vital for maximizing device switching speed and minimizing power consumption.\n\n**Performance Characteristics and Code-Level Implications**\n\nThe meticulous process flow outlined in this patent directly translates to superior device performance. By protecting the high-k dielectric and metal gate from thermal stress and mechanical damage, the technology ensures:\n*   **Improved Gate Dielectric Integrity**: Minimized interface traps and defects, leading to lower leakage currents and enhanced gate control.\n*   **Stable Work Function**: Reduced shifts in the metal gate work function, leading to more predictable and uniform threshold voltages across the wafer.\n*   **Higher Carrier Mobility**: Preservation of the channel region's quality, resulting in higher current drive and faster transistor switching speeds.\n*   **Reduced Contact Resistance**: Efficient silicidation over precisely exposed source/drain and gate regions, further boosting device speed and power efficiency.\n*   **Enhanced Manufacturing Yield**: The planarization steps and protective layers contribute to tighter process control and reduced defect densities, leading to higher yields for advanced nodes.\n\nWhile this patent is hardware-centric, its implications resonate at the software and architecture levels. More reliable and performant transistors enable the design of more complex and efficient integrated circuits. This translates to better performance for processor cores, memory arrays, and specialized accelerators (e.g., for AI/ML). From a software perspective, this means applications can run faster, consuming less power, which is critical for mobile, edge computing, and large-scale data center operations. Architects can leverage these improved device characteristics to push the boundaries of system-on-chip (SoC) design, integrating more functionality and achieving higher clock speeds with less thermal overhead. The underlying stability provided by this fabrication method reduces variability, which in turn simplifies circuit design and verification efforts.","business_analysis":"The **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** patent (US-9853116) represents a significant advancement in semiconductor manufacturing, with profound implications for the global electronics industry. This innovation targets the foundational components of modern computing – the transistors – and offers a pathway to unlock new levels of performance, efficiency, and reliability. Analyzing its business impact reveals substantial market opportunities and strategic advantages.\n\n**Market Opportunity Size and Growth**\n\nThe semiconductor market is a colossal industry, projected to exceed $1 trillion by 2030, driven by megatrends like AI, IoT, 5G, automotive electronics, and high-performance computing. At the heart of this growth are advanced Complementary Metal-Oxide-Semiconductor (CMOS) devices, particularly those incorporating high-k (high dielectric constant) metal gates (HKMG) for nodes below 28nm. This patent directly enhances the manufacturability and performance of these critical components. The total addressable market for the technology underpinning this patent is effectively the entire advanced logic and memory chip market, which runs into hundreds of billions of dollars annually. As device scaling continues, the demand for robust HKMG integration solutions will only intensify, making this innovation highly relevant for sustained market leadership.\n\n**Competitive Advantages**\n\nAdopting the methodology outlined in this patent provides several distinct competitive advantages for semiconductor manufacturers:\n\n1.  **Superior Device Performance**: By mitigating issues like gate leakage, threshold voltage shifts, and interface degradation, the invention enables the production of transistors with higher drive current, faster switching speeds, and lower power consumption. This translates directly into more powerful and energy-efficient end products (e.g., CPUs, GPUs, mobile SoCs).\n2.  **Enhanced Reliability and Yield**: The precise control over the gate stack and the use of protective layers during fabrication significantly reduce process-induced defects. This leads to higher manufacturing yields, reducing costly scrap and improving overall production efficiency. Enhanced reliability means fewer field failures and stronger brand reputation.\n3.  **Faster Time-to-Market for Advanced Nodes**: By providing a robust and optimized process for HKMG integration, companies can accelerate their development cycles for next-generation chips. This allows them to bring cutting-edge products to market faster, capturing early-adopter segments and establishing technological leadership.\n4.  **Cost Efficiency**: While initial R&D for advanced processes is high, the improved yields and reduced defect rates offered by this technology can lead to significant cost savings in high-volume manufacturing.\n\n**Revenue Potential and Business Models**\n\nCompanies that license or implement this patent can realize revenue potential through multiple avenues:\n\n*   **Direct Chip Sales**: Manufacturers of logic, memory, and specialized processors (e.g., for AI) will produce higher-performing, more energy-efficient chips, commanding premium prices and capturing larger market shares.\n*   **Foundry Services**: Semiconductor foundries (e.g., TSMC, Samsung Foundry) that adopt this process can offer differentiated manufacturing services to fabless chip designers, attracting more customers seeking leading-edge technology.\n*   **IP Licensing**: The patent itself can be licensed to other semiconductor firms, generating royalty revenue for the assignee.\n\n**Strategic Positioning and ROI Projections**\n\nStrategically, this patent allows companies to solidify their position at the forefront of semiconductor innovation. It's not merely an incremental improvement but a foundational enhancement that enables the continuation of Moore's Law. For companies heavily invested in research and development, the return on investment (ROI) from implementing such a technology can be substantial. Improved yields alone can translate into millions, if not billions, of dollars in savings and increased revenue for high-volume products. Furthermore, the ability to deliver superior performance and energy efficiency can unlock new market segments and applications, such as ultra-low-power edge AI devices or next-generation quantum computing components.\n\nThis technology also acts as a critical enabler for other innovations. For instance, the robust gate structures it produces are essential for integrating complex 3D stacking technologies or novel transistor architectures like Gate-All-Around (GAA) FETs. Investing in or leveraging this patent is a strategic imperative for any company aiming to remain competitive and drive innovation in the rapidly evolving semiconductor landscape.","faqs":[{"answer":"The **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** (US-9853116) is a patented method for fabricating advanced Complementary Metal-Oxide-Semiconductor (CMOS) devices, specifically addressing the integration of high-k (high dielectric constant) dielectric materials and metal gates (HKMG). At its core, this innovation describes a unique gate structure and a precise manufacturing process designed to protect the delicate high-k metal gate during the harsh steps of semiconductor production.\n\nThis technology involves creating a gate stack with three sections: a bottom portion (the actual high-k metal gate material), a top portion (a temporary sacrificial layer), and a sacrificial cap layer over the top. This multi-layered approach acts as a protective shield. Through a series of carefully orchestrated steps, including the application of nitride encapsulation and an organic planarizing layer, the critical gate components are safeguarded. The patent culminates in the selective removal of these protective layers, and even the top sacrificial gate portion, before the final, low-resistance electrical connections (silicidation) are made to the perfectly preserved bottom gate and source/drain regions.\n\nThe overall goal of this invention is to enable the production of smaller, faster, and more energy-efficient transistors by ensuring the integrity and optimal electrical properties of the high-k metal gate, which are crucial for modern microchips. It represents a significant advancement in semiconductor fabrication techniques, pushing the boundaries of what's possible in microelectronics. This patent is key to understanding how future generations of chips will achieve their performance targets. Keywords: Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate, CMOS, high-k metal gate, semiconductor fabrication, gate stack, microelectronics.","question":"What is Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate?"},{"answer":"The **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** works by employing a sophisticated, multi-stage protection and removal process during transistor manufacturing. First, a gate stack is formed on the silicon substrate, consisting of a bottom portion (the active gate material), a top sacrificial portion, and a sacrificial cap layer. This initial structure acts as a temporary placeholder and shield.\n\nDuring subsequent manufacturing steps, such as forming gate spacers and creating source/drain regions, this initial dummy gate structure protects the sensitive high-k metal gate materials from high temperatures and physical stress. After these steps, the sacrificial cap layer is removed. Then, a robust nitride encapsulation layer is deposited over the remaining gate stack, providing further protection. An organic planarizing layer is applied on top of the nitride, ensuring a perfectly flat surface for subsequent lithography.\n\nThe key ingenious step involves the precise, sequential removal of these protective layers: first the nitride, then the organic planarizing layer, and finally, the top portion of the gate stack itself. This staged removal carefully exposes the critical bottom portion of the gate and the source/drain regions. With these areas precisely exposed, a final silicidation step is performed to create low-resistance electrical contacts, which are essential for fast transistor operation. This meticulous process ensures that the delicate high-k metal gate is preserved throughout the fabrication, leading to superior device performance and reliability. Keywords: Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate, fabrication process, gate stack, nitride encapsulation, planarization, silicidation, semiconductor manufacturing, high-k metal gate.","question":"How does Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate work?"},{"answer":"The **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** patent primarily solves critical challenges associated with integrating high-k (high dielectric constant) metal gates (HKMG) into advanced Complementary Metal-Oxide-Semiconductor (CMOS) devices. As transistors shrink to nanometer scales, HKMG materials are essential for reducing gate leakage current and improving switching speeds, but they are also highly susceptible to degradation.\n\nTraditional manufacturing processes, especially 'gate-last' approaches, involve high-temperature steps and mechanical polishing that can damage these delicate high-k dielectrics and metal gates. This damage leads to several problems: increased leakage current (wasted power), shifts in threshold voltage (unpredictable device behavior), reduced carrier mobility (slower transistors), and overall lower device reliability and manufacturing yields. These issues can significantly hinder the ability to further miniaturize transistors and improve chip performance.\n\nThis innovation addresses these problems by providing a robust and precise method to protect the sensitive gate materials throughout the fabrication process. By using a multi-layered sacrificial gate and strategic protective layers that are precisely removed, the technology ensures the integrity of the high-k metal gate, leading to higher performance, greater reliability, and more efficient production of advanced microchips. It effectively overcomes a major 'scaling wall' in modern semiconductor manufacturing. Keywords: Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate, high-k metal gate challenges, semiconductor problems, device degradation, leakage current, transistor scaling, manufacturing yield, CMOS issues.","question":"What problem does Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate solve?"},{"answer":"The patent for **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** (US-9853116) was filed on December 14, 2015, and published on December 26, 2017. The patent abstract does not explicitly list the inventors' names; however, such innovations typically originate from research and development teams within leading semiconductor companies or academic institutions specializing in microelectronics. The assignee, which holds the rights to the patent, is also not specified in the provided data, but it would typically be a major player in the semiconductor industry.\n\nThese types of complex fabrication patents are the result of extensive collaborative efforts by materials scientists, process engineers, and device physicists. Their work involves deep understanding of quantum mechanics, solid-state physics, and advanced chemistry to develop processes that can reliably create structures at the nanometer scale. The specific individuals or team behind this particular patent would have contributed significantly to solving the intricate challenges of high-k metal gate integration, pushing the boundaries of what is technologically feasible in chip manufacturing. Keywords: Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate, patent inventors, patent assignee, semiconductor research, microelectronics R&D, patent filing date, publication date.","question":"Who invented Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate?"},{"answer":"The **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** offers several significant benefits that drive advancements in semiconductor technology and electronic devices:\n\n1.  **Enhanced Transistor Performance**: By protecting the delicate high-k dielectric and metal gate from damage, the patent ensures superior electrical characteristics. This translates to higher drive currents, faster switching speeds, and more stable threshold voltages, leading to overall faster and more responsive electronic devices.\n2.  **Reduced Power Leakage**: The integrity of the high-k gate dielectric is maintained, significantly minimizing leakage currents. This is crucial for power efficiency, extending battery life in mobile devices and reducing energy consumption in data centers and other high-performance computing applications.\n3.  **Higher Manufacturing Yields**: The robust protection layers and precise planarization steps reduce process-induced defects and variability across the wafer. This leads to a higher percentage of functional chips per silicon wafer, significantly lowering manufacturing costs and improving profitability for chipmakers.\n4.  **Improved Device Reliability**: Minimizing damage during fabrication results in more robust and durable transistors, leading to electronic devices with longer operational lifetimes and fewer field failures.\n5.  **Enabling Advanced Scaling**: This technology provides a reliable pathway for integrating high-k metal gates into even smaller transistor geometries (e.g., sub-10nm nodes), which is essential for the continued miniaturization and performance scaling of microchips, thereby supporting the progress of Moore's Law. Keywords: Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate, benefits, transistor performance, power efficiency, manufacturing yield, device reliability, semiconductor scaling, high-k metal gate advantages.","question":"What are the key benefits of Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate?"},{"answer":"The **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** differentiates itself from prior art by offering a more refined and comprehensive approach to 'gate-last' or 'replacement metal gate' (RMG) fabrication, particularly in how it protects the sensitive high-k dielectric and metal gate materials.\n\nPrior art RMG processes typically used a simpler sacrificial dummy gate (often polysilicon) that was removed after high-temperature steps, and then the HKMG was deposited. While this mitigated thermal damage compared to 'gate-first' approaches, it still faced challenges in precisely removing the dummy gate, ensuring optimal interface quality during trench refill, and protecting the delicate HKMG during subsequent planarization and metallization steps. Issues like damage to the underlying channel, non-uniform trench formation, and difficulties in clean silicidation were common.\n\nThis patent introduces several key distinctions: a multi-section initial gate stack (bottom, top, sacrificial cap) for superior initial protection; the strategic use of a robust nitride encapsulation layer; and the integration of an organic planarizing layer (OPL) for precise surface flatness. The most significant difference lies in the *sequential and selective removal* of these multiple protective layers (nitride, OPL, and the top gate portion) before the final silicidation. This multi-layered, staged protection and precise unveiling ensures that the critical high-k metal gate is shielded throughout virtually all harsh processing, leading to unprecedented integrity, better electrical characteristics, and higher yields compared to earlier RMG methods. Keywords: Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate, prior art, gate-last process, replacement metal gate, high-k metal gate integration, fabrication differences, protective layers, etch selectivity, manufacturing innovation.","question":"How is Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate different from prior art?"},{"answer":"The **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** is a foundational semiconductor technology, meaning its impact will ripple across virtually all industries reliant on advanced electronics. Its primary influence will be on the core semiconductor manufacturing sector, enabling the production of more powerful and efficient microchips. These improved chips, in turn, will drive innovation in numerous downstream industries.\n\nKey impacted industries include:\n\n1.  **Consumer Electronics**: Smartphones, laptops, tablets, smart home devices, gaming consoles, and wearables will benefit from faster processors, longer battery life, and enhanced reliability.\n2.  **High-Performance Computing (HPC) & Cloud Computing**: Data centers, supercomputers, and cloud service providers will leverage more energy-efficient and powerful CPUs and GPUs, leading to lower operational costs, reduced environmental footprint, and accelerated data processing capabilities.\n3.  **Artificial Intelligence (AI) & Machine Learning (ML)**: The increasing demand for computational power for AI training and inference will be met with more efficient AI accelerators and specialized processors, enabling more complex algorithms and real-time AI applications.\n4.  **Automotive**: Advanced driver-assistance systems (ADAS), infotainment systems, and autonomous vehicles require highly reliable, high-performance, and energy-efficient chips for sensor processing, decision-making, and connectivity.\n5.  **Internet of Things (IoT)**: Edge devices in IoT networks need to be both powerful and ultra-low power. This technology facilitates the creation of such chips, enabling smarter, more autonomous IoT ecosystems in smart cities, industrial automation, and healthcare.\n6.  **Telecommunications**: 5G infrastructure and future wireless technologies will rely on advanced chips for base stations, network equipment, and end-user devices, benefiting from the enhanced performance and efficiency this patent provides. Keywords: Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate, industry impact, semiconductor industry, consumer electronics, HPC, AI, automotive, IoT, telecommunications, microchip applications.","question":"What industries will Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate impact?"},{"answer":"The patent for **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate**, identified as US-9853116, has a recorded filing date and publication date.\n\nThis patent was **filed on December 14, 2015**. The filing date marks when the patent application was officially submitted to the patent office, initiating the examination process. It establishes the priority date for the invention, which is crucial in determining novelty against prior art.\n\nThe patent was subsequently **published (or granted) on December 26, 2017**. The publication date signifies when the patent office officially made the details of the invention public, allowing anyone to review the claims, description, and drawings. In many jurisdictions, this is also the date the patent is formally granted, giving the assignee exclusive rights to the invention for a specified period (typically 20 years from the filing date). This timeline reflects the typical two-year examination period for complex semiconductor patents. The grant of this patent confirms its novelty and non-obviousness within the existing body of technical knowledge. Keywords: Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate, patent filing date, publication date, patent grant, US-9853116, patent timeline, intellectual property, semiconductor patent.","question":"When was Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate filed/granted?"},{"answer":"The commercial applications of the **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** are vast and fundamental to the entire modern electronics industry. As a core semiconductor fabrication technology, its primary commercial value lies in enabling the production of high-performance, energy-efficient, and reliable microchips for a multitude of devices and systems.\n\nKey commercial applications include:\n\n1.  **Microprocessors (CPUs) and Graphics Processing Units (GPUs)**: This technology allows for the creation of faster and more powerful CPUs and GPUs used in personal computers, servers, workstations, and gaming consoles, directly impacting the performance of all software and applications.\n2.  **Memory Devices (e.g., DRAM, Flash)**: While primarily focused on logic gates, the principles of precise material integration and protection can also be applied or adapted to enhance the performance and reliability of advanced memory cells, improving data storage and retrieval speeds.\n3.  **System-on-Chip (SoC) Solutions**: Integrated circuits that combine multiple components (CPU, GPU, memory, specialized accelerators) on a single chip, prevalent in smartphones, tablets, and IoT devices, will benefit from the improved performance and power efficiency of individual transistors.\n4.  **Specialized AI Accelerators**: Chips designed specifically for artificial intelligence and machine learning workloads, such as NPUs (Neural Processing Units), require extremely high transistor density and efficiency, which this patent helps to enable.\n5.  **Automotive Electronics**: Advanced driver-assistance systems (ADAS), in-car infotainment, and engine control units demand highly reliable and robust chips that can withstand harsh environments, a characteristic enhanced by this fabrication method.\n6.  **Networking and Telecommunications Equipment**: Components for 5G infrastructure, routers, switches, and data center networking benefit from the high-speed and low-power characteristics of chips built using this innovation. Keywords: Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate, commercial applications, microprocessors, GPUs, SoC, AI accelerators, automotive electronics, networking equipment, semiconductor commercialization, high-k metal gate applications.","question":"What are the commercial applications of Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate?"},{"answer":"The **Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate** represents a significant step in semiconductor manufacturing, and its underlying principles are likely to evolve and influence future developments in microelectronics. While the patent itself describes a specific methodology, the concepts of precise gate protection, multi-layered sacrificial structures, and highly controlled sequential removal will be foundational for upcoming transistor architectures.\n\nExpected future developments include:\n\n1.  **Adaptation for Gate-All-Around (GAA) FETs**: As the industry moves beyond FinFETs to GAA FETs (e.g., nanosheet or nanowire transistors) for sub-3nm nodes, the challenges of creating gates that wrap around the channel on all sides will intensify. The precise protection and selective removal techniques outlined in this patent will be crucial for fabricating these complex 3D gate structures, ensuring their integrity and performance.\n2.  **Integration with 3D Stacking Technologies**: Future chips will increasingly rely on 3D integration, stacking multiple active layers or chiplets. The ability to create robust, high-performance transistors with this patent's method on each layer will be essential for realizing the full potential of these advanced packaging techniques.\n3.  **Novel Materials Exploration**: While this patent focuses on specific materials (e.g., nitride encapsulation, organic planarizing layer), future research may explore new sacrificial, protective, or high-k materials with even better etch selectivity, thermal stability, or electrical properties, further optimizing the process.\n4.  **In-situ Process Monitoring and AI Integration**: Advanced manufacturing will increasingly incorporate real-time, in-situ monitoring and artificial intelligence to control and optimize each fabrication step. The precise, multi-stage nature of this patent's process makes it an ideal candidate for such intelligent automation, leading to even higher yields and tighter process control.\n5.  **Beyond CMOS Devices**: While focused on CMOS, the fundamental ideas of protecting delicate structures during complex fabrication could influence the development of novel computing paradigms, such as quantum computing or neuromorphic chips, where highly sensitive components require unprecedented protection during manufacturing. Keywords: Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate, future developments, GAA FETs, 3D stacking, novel materials, in-situ monitoring, AI in manufacturing, beyond CMOS, semiconductor roadmap, transistor evolution.","question":"What are the future developments expected for Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate?"}],"topics":["Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate","semiconductor device","CMOS technology","high-k metal gate","gate stack","technical","background","modern"],"tech_cluster":null},"seo":{"title":"Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate - Patent US-9853116","description":"Discover how this groundbreaking Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate patent enhances microchip performance, reduces leakage, and boosts manufacturing yields for advanced semiconductors. Full technical analysis.","keywords":["Partial Sacrificial Dummy Gate with Cmos Device with High-k Metal Gate","semiconductor device","CMOS technology","high-k metal gate","gate stack","transistor fabrication","silicidation","nanotechnology","microchip innovation","semiconductor manufacturing","patent US-9853116","device performance","power efficiency","manufacturing yield"]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9853116","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-9853116","citation_suggestion":"Patentable. \"Partial sacrificial dummy gate with CMOS device with high-k metal gate\" (US-9853116). https://patentable.app/patents/US-9853116","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9853116","json":"https://patentable.app/api/llm-context/US-9853116","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:19:06.916Z"}