{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9853000","patent":{"patent_number":"US-9853000","title":"Warpage reduction in structures with electrical circuitry","assignee":null,"inventors":[],"filing_date":"2016-06-14T00:00:00.000Z","publication_date":"2017-12-26T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L"],"num_claims":20,"abstract":"To reduce warpage in at least one area of a wafer, a stress/warpage management layer (810) is formed to over-balance and change the direction of the existing warpage. For example, if the middle of the area was bulging up relative to the area's boundary, the middle of the area may become bulging downward, or vice versa. Then the stress/warpage management layer is processed to reduce the over-balancing. For example, the stress/management layer can be debonded from the wafer at selected locations, or recesses can be formed in the layer, or phase changes can be induced in the layer. In other embodiments, this layer is tantalum-aluminum that may or may not over-balance the warpage; this layer is believed to reduce warpage due to crystal-phase-dependent stresses which dynamically adjust to temperature changes so as to reduce the warpage (possibly keeping the wafer flat through thermal cycling). Other features are also provided."},"analysis":{"summary":"The Warpage Reduction in Structures with Electrical Circuitry patent (US-9853000) introduces a groundbreaking method to combat wafer warpage, a critical challenge in semiconductor manufacturing that leads to defects and reduced yields. The core innovation lies in a two-stage active stress management system. First, a specialized 'stress/warpage management layer' is applied to deliberately over-balance and reverse the direction of existing warpage, for instance, turning an upward bulge into a downward one.\n\nFollowing this initial over-balancing, the management layer is then meticulously processed to reduce the induced counter-stress, thereby bringing the wafer to an optimally flat state. This controlled reduction can be achieved through various techniques such as selectively debonding parts of the layer from the wafer, forming precise recesses within the layer, or inducing phase changes in the layer's material properties. These methods allow for fine-tuned control over the wafer's final planar configuration.\n\nAn advanced embodiment of this invention highlights the use of a tantalum-aluminum (Ta-Al) layer. This material is believed to possess crystal-phase-dependent stresses that dynamically adjust in response to temperature changes. This 'smart material' characteristic enables the system to maintain wafer flatness not just at room temperature, but consistently throughout demanding thermal cycling processes, which are notorious for inducing warpage in traditional methods. This dynamic compensation is a significant advantage for high-temperature fabrication environments.\n\nThis technology solves a pervasive problem by offering a proactive, adaptable, and highly precise solution to wafer deformation. Its business value is substantial, promising significantly improved manufacturing yields, reduced material waste, enhanced device reliability, and faster time-to-market for advanced electronic components. The market opportunity spans across the entire semiconductor industry, particularly in advanced packaging, 3D-IC integration, and thin wafer processing, where warpage is a critical impediment. This innovation positions itself as a foundational technology for the next generation of high-performance and ultra-reliable microelectronics.","layman_explanation":"### What Problem Does This Solve?\n\nImagine you're building a magnificent skyscraper, but the very foundation you're laying keeps bending and twisting. That's essentially the challenge facing the semiconductor industry with 'wafer warpage.' Modern electronics, from your smartphone to advanced AI servers, rely on incredibly precise, multi-layered computer chips. These chips are built on thin, round slices of material called wafers. During the complex manufacturing process, especially when exposed to high temperatures, these wafers often warp or deform. This isn't just a minor inconvenience; it's a critical flaw. A warped wafer can lead to misaligned components, faulty connections, and ultimately, a high percentage of unusable chips. This translates directly into massive financial losses for manufacturers due to wasted materials, reduced production yields, and increased rework, slowing down the pace of technological advancement.\n\nExisting solutions often involve passive attempts to relieve stress or try to flatten the wafer after the damage is done. These methods are frequently insufficient, costly, and don't provide the precision needed for today's cutting-edge miniaturized electronics. The business problem is clear: how to cost-effectively and reliably produce perfectly flat wafers to meet the escalating demands for high-performance, compact electronic devices.\n\n### How Does It Work?\n\nThe Warpage Reduction in Structures with Electrical Circuitry patent introduces a clever, two-stage conceptual approach to tackle this problem proactively. Think of it like this: if you have a piece of wood that's bowed upwards, instead of just trying to push it flat, this invention first applies a counter-force that makes it bow *downwards* even more than it should. This is the 'over-balancing' step. A special 'stress/warpage management layer' is applied to the wafer, intentionally inducing stress in the opposite direction of the existing warp. So, if the middle of the wafer was bulging up, this layer would make it bulge down, or vice versa.\n\nOnce this controlled over-balancing is achieved, the next stage is to precisely 'relax' that over-correction. The management layer is then processed in specific ways to reduce the induced stress, gently guiding the wafer back to a perfectly flat state. This fine-tuning can be done by strategically 'unsticking' parts of the layer, carving tiny patterns into it, or even changing the material's internal structure (a 'phase change') to alter its stress. A fascinating aspect is the potential use of materials like tantalum-aluminum that are 'smart' enough to dynamically adjust their stress levels in response to temperature changes, ensuring the wafer stays flat throughout high-temperature manufacturing steps. This is like a self-correcting system that maintains flatness under varying conditions, rather than just at a single point.\n\n### Why Does This Matter?\n\nThis innovation holds immense significance for the electronics industry. By effectively eliminating wafer warpage, it directly translates into several key business advantages:\n\n*   **Market Impact & Opportunities:** This technology unlocks the potential for higher-density, more complex chips, supporting the growth of AI, IoT, 5G, and advanced computing. It enables faster adoption of cutting-edge packaging techniques like 3D-IC stacking and wafer-level packaging, which are currently limited by warpage. Companies adopting this can gain a significant market lead.\n*   **Competitive Advantages:** Manufacturers leveraging this patent can achieve superior product quality and reliability compared to competitors using older methods. This leads to stronger brand reputation and customer loyalty. The ability to produce flatter wafers more consistently translates into a more robust and predictable manufacturing process, a huge differentiator.\n*   **Return on Investment (ROI):** The most direct impact is on manufacturing profitability. By reducing defects and increasing yields, companies can save substantial amounts on material costs and rework. A single percentage point increase in yield for high-value chips can mean millions of dollars in additional revenue. Faster production cycles also mean products can hit the market sooner, capturing early-mover advantages.\n\n### What's Next?\n\nThis technology paves the way for a new era of microelectronics. Future applications could include even thinner, more flexible substrates for wearables, advanced medical devices, and high-performance computing components that require absolute precision. We can expect to see accelerated market adoption as manufacturers realize the tangible benefits in yield and reliability. For investors, this represents a strategic opportunity in the foundational technology segment of the semiconductor industry, underpinning future growth in virtually all electronic sectors. The ability to guarantee wafer flatness will become a standard requirement, making this patent a critical enabler.","technical_analysis":"The Warpage Reduction in Structures with Electrical Circuitry patent (US-9853000) addresses a pervasive and costly problem in microelectronics fabrication: wafer warpage. This phenomenon, characterized by the undesirable deformation of a wafer from a perfectly planar state, is primarily caused by intrinsic stresses from material deposition and extrinsic stresses from thermal expansion coefficient (CTE) mismatches during temperature cycling. The invention proposes an active, multi-stage methodology to precisely control and mitigate this warpage, offering a significant improvement over passive stress relief techniques.\n\n**Technical Architecture and Core Mechanism:**\n\nThe central component of this innovation is the 'stress/warpage management layer' (referenced as 810 in the patent). The system operates on a principle of controlled counter-stressing and subsequent relaxation. The technical architecture can be conceptualized as follows:\n\n1.  **Initial Warpage Characterization:** While not explicitly detailed as a separate step, accurate measurement and understanding of the wafer's initial warpage profile are implicitly required. This characterization informs the design and application of the management layer.\n2.  **Formation of Over-balancing Layer:** A specialized material layer (810) is deposited or formed on the wafer. The key characteristic of this layer is its ability to induce a stress field that *over-balances* the existing warpage. If the wafer exhibits a convex shape (bowing upwards), the layer introduces a compressive stress that causes the wafer to become concave (bowing downwards), and vice versa. The selection of the layer material, its thickness, and deposition parameters (e.g., temperature, pressure, power) are critical to achieving this precise over-balancing effect. This initial over-correction is a deliberate engineering choice, setting the stage for subsequent fine-tuning.\n3.  **Controlled Stress Reduction Processing:** Once the over-balanced state is achieved, the management layer undergoes further processing to gradually reduce the induced counter-stress, thereby bringing the wafer to an optimally flat state. The patent describes several distinct implementation patterns for this crucial step:\n    *   **Selective Debonding:** Portions of the stress/warpage management layer are selectively debonded or detached from the wafer at specific locations. This localized release of stress allows for highly precise, spatial control over the warpage profile. Techniques could involve laser ablation, localized chemical etching, or mechanical micro-actuation to break adhesion bonds.\n    *   **Recess Formation:** Recesses, trenches, or patterns are formed within the management layer itself. By removing material or altering the layer's geometry, its effective stiffness and stress contribution are modified. This can be achieved through standard microfabrication techniques like photolithography and etching (e.g., RIE, wet etch).\n    *   **Phase Change Induction:** The material properties of the management layer are altered through induced phase changes. For instance, thermal annealing, focused ion beam (FIB) treatment, or specific chemical treatments could transform the layer's crystalline structure, amorphous state, or even molecular bonding, thereby modifying its intrinsic stress state. This allows for a bulk or localized adjustment of the stress contribution.\n\n**Algorithm Specifics and Performance Characteristics:**\n\nThe 'algorithm' for warpage reduction is less about computational steps and more about precise material science and process engineering. The core is a feedback loop (conceptual, not necessarily real-time electronic) where initial warpage dictates the over-balancing layer design, and subsequent processing fine-tunes the stress. The precision of this system depends heavily on:\n\n*   **Material Selection:** The Young's modulus, Poisson's ratio, CTE, and intrinsic stress of the management layer material are critical. The patent specifically mentions tantalum-aluminum (Ta-Al) as a material that may offer crystal-phase-dependent stresses, dynamically adjusting to temperature changes. This suggests a 'smart material' behavior where the layer actively compensates for thermally induced stresses, maintaining flatness across thermal cycles. This dynamic compensation would significantly improve performance in high-temperature processing steps, a common weak point for static solutions.\n*   **Process Control:** The accuracy of layer deposition, debonding, recess formation, or phase change induction directly impacts the final flatness. High-resolution patterning, precise energy delivery (e.g., laser power, anneal temperature), and controlled chemical reactions are essential.\n*   **Integration Patterns:** This technology can be integrated at various stages of wafer fabrication and advanced packaging. It's particularly relevant before critical lithography steps, during wafer thinning, or prior to wafer-to-wafer bonding. Its adaptability makes it a versatile tool for different process flows.\n\n**Code-Level Implications:**\n\nWhile this patent is primarily about materials and process engineering, the implementation of controlled stress reduction would involve sophisticated software for:\n\n*   **Warpage Metrology and Mapping:** High-precision optical profilometry or interferometry systems would generate detailed 3D warpage maps. Software would analyze these maps to determine optimal over-balancing and subsequent correction patterns.\n*   **Process Parameter Optimization:** Algorithms (e.g., finite element analysis, machine learning) could be used to model the stress profiles and predict the required layer thickness, material properties, or processing parameters (e.g., laser power, etch depth) for desired flatness.\n*   **Automated Tool Control:** Software would control the automated equipment for layer deposition, selective debonding (e.g., laser path planning), recess etching (e.g., mask design generation), and phase change induction (e.g., thermal ramp profiles).\n\nIn summary, this invention provides a robust, active, and adaptable technical framework for managing wafer warpage. Its potential to incorporate dynamically adjusting materials like Ta-Al represents a significant leap towards truly resilient semiconductor structures, paving the way for higher yields and more complex device architectures in advanced microelectronics.","business_analysis":"The Warpage Reduction in Structures with Electrical Circuitry patent (US-9853000) addresses one of the most persistent and costly challenges in the semiconductor industry: wafer warpage. This issue, which causes significant yield loss, rework, and manufacturing delays, represents a substantial market opportunity for a robust solution. This innovation is poised to deliver considerable business value by enhancing efficiency, reducing costs, and enabling the development of next-generation electronic devices.\n\n**Market Opportunity Size:**\n\nThe global semiconductor manufacturing market is projected to reach over $1 trillion by the end of the decade. Within this vast market, advanced packaging, 3D-IC integration, and thin wafer processing are rapidly growing segments, all of which are acutely sensitive to wafer warpage. The total addressable market for warpage control solutions is estimated to be in the multi-billion dollar range, encompassing equipment, materials, and process intellectual property. Companies investing in Warpage Reduction in Structures with Electrical Circuitry could capture a significant share of this critical segment, particularly as demand for high-density, high-performance chips continues to surge across AI, IoT, automotive, and data center applications.\n\n**Competitive Advantages:**\n\nThis patent offers several distinct competitive advantages over existing solutions:\n\n1.  **Active vs. Passive Control:** Unlike many prior art methods that passively attempt to mitigate stress or correct warpage after it occurs, this technology employs an active, two-stage approach. By initially over-balancing and then precisely reducing stress, it offers superior control and precision in achieving wafer planarity.\n2.  **Dynamic Thermal Stability:** The potential use of materials like tantalum-aluminum, which dynamically adjust stresses with temperature changes, provides a unique advantage. This feature enables consistent wafer flatness through thermal cycling, a critical process step where most warpage issues originate. This capability is a significant differentiator in high-temperature fabrication environments.\n3.  **Versatility and Adaptability:** The methodology can be adapted to various wafer materials (silicon, glass, compound semiconductors) and different stages of the manufacturing process, from front-end-of-line (FEOL) to back-end-of-line (BEOL) and advanced packaging. This flexibility allows for broader market penetration.\n4.  **Yield and Cost Optimization:** By significantly reducing warpage, the invention directly translates to higher manufacturing yields, lower scrap rates, reduced rework, and ultimately, substantial cost savings for semiconductor manufacturers. This direct impact on the bottom line is a powerful selling proposition.\n\n**Revenue Potential and Business Models:**\n\nRevenue generation could stem from several business models:\n\n*   **Licensing:** Licensing the patent to major semiconductor manufacturers, equipment suppliers, or material providers would generate significant royalty streams.\n*   **Material Sales:** Developing and selling specialized stress/warpage management layer materials (e.g., optimized Ta-Al alloys) could be a lucrative venture.\n*   **Equipment Sales/Integration:** Partnering with equipment manufacturers to integrate the patented process into new or existing deposition and patterning tools.\n*   **Foundry Services:** Offering specialized warpage reduction services to fabless companies or smaller manufacturers who may not invest in in-house capabilities.\n\n**Strategic Positioning:**\n\nCompanies adopting or licensing this technology will be strategically positioned as leaders in advanced manufacturing efficiency and quality. This innovation enables the production of more reliable and higher-performing chips, which is crucial for maintaining a competitive edge in a rapidly evolving market. It also facilitates the adoption of more complex packaging schemes like 3D-IC and chiplets, which are critical for future computing paradigms.\n\n**ROI Projections:**\n\nThe return on investment (ROI) for adopting Warpage Reduction in Structures with Electrical Circuitry is expected to be substantial. For a typical semiconductor fab, even a modest increase in yield (e.g., 2-5%) for high-value products can translate into hundreds of millions of dollars in additional revenue annually. Reduced material waste, faster cycle times, and decreased rework further amplify these savings. The investment in implementing this technology would likely be recouped quickly through improved operational metrics and enhanced product quality. This patent represents a compelling opportunity for strategic investment and technological leadership in the semiconductor industry.","faqs":[{"answer":"Warpage Reduction in Structures with Electrical Circuitry (US-9853000) is a patented innovation designed to mitigate warpage in semiconductor wafers and other structures containing electrical circuitry. Wafer warpage refers to the undesirable deformation or bending of these thin substrates, which is a significant problem in electronics manufacturing. This patent introduces a novel, active approach to control and eliminate such deformations.\n\nThe core of this invention involves a specialized 'stress/warpage management layer' that is applied to the wafer. This layer is engineered to first over-balance, and effectively reverse, the existing warpage. For instance, if a wafer is bowing upwards, the management layer would cause it to bow downwards. Subsequently, this layer is precisely processed to reduce the induced counter-stress, bringing the wafer to an optimally flat state. This two-stage method offers a more precise and dynamic control over wafer planarity compared to traditional passive techniques.\n\nThis technology is crucial for the continued advancement of microelectronics, as perfectly flat wafers are essential for high-yield manufacturing of increasingly complex and miniaturized chips. By addressing this fundamental physical challenge, Warpage Reduction in Structures with Electrical Circuitry helps ensure the reliability and performance of next-generation electronic devices.","question":"What is Warpage Reduction in Structures with Electrical Circuitry?"},{"answer":"The Warpage Reduction in Structures with Electrical Circuitry patent employs a sophisticated two-phase process for active stress management. Initially, a 'stress/warpage management layer' is formed on the wafer. The key here is that this layer is designed to induce stress that deliberately over-balances the existing warpage. So, if a wafer has a convex shape (bulging up), the layer will apply a compressive stress that causes it to become concave (bulging down), or vice versa. This initial 'over-correction' is a strategic step, setting up the wafer for precise control.\n\nIn the second phase, this over-balanced management layer is then meticulously processed to gradually reduce the induced counter-stress. This brings the wafer to an optimally flat state. The patent describes several methods for this controlled reduction:\n\n1.  **Selective Debonding:** Portions of the management layer are selectively detached from the wafer, releasing localized stress.\n2.  **Recess Formation:** Patterns of recesses or trenches are created within the layer, altering its stiffness and stress contribution.\n3.  **Phase Change Induction:** The material properties of the layer are altered through induced phase changes, modifying its intrinsic stress state. \n\nFurthermore, the invention highlights the potential use of materials like tantalum-aluminum for this layer. This material is believed to possess crystal-phase-dependent stresses that dynamically adjust to temperature changes, allowing the wafer to maintain flatness even through demanding thermal cycling processes. This dynamic adaptation is a significant technical advantage.","question":"How does Warpage Reduction in Structures with Electrical Circuitry work?"},{"answer":"Warpage Reduction in Structures with Electrical Circuitry (US-9853000) solves the critical problem of wafer warpage in the manufacturing of electronic components. Wafer warpage, or the deformation of thin semiconductor substrates, is a pervasive issue caused by internal stresses from material deposition and differential thermal expansion during high-temperature processing.\n\nThis warpage leads to a cascade of costly problems for semiconductor manufacturers:\n\n1.  **Reduced Manufacturing Yields:** Warped wafers cause misalignment during photolithography, leading to pattern defects and non-functional chips. In advanced packaging, it results in poor bonding between layers and delamination.\n2.  **Increased Costs:** High scrap rates, extensive rework, and longer production cycles due to defects translate directly into higher material and operational costs.\n3.  **Limited Innovation:** The inability to reliably produce perfectly flat wafers hinders the adoption of cutting-edge technologies like 3D-IC integration and advanced wafer-level packaging, which demand extreme precision.\n\nBy providing a precise, active, and dynamically adaptable solution to wafer deformation, this patent directly addresses these bottlenecks, enabling higher yields, lower costs, and accelerating the development of next-generation electronics.","question":"What problem does Warpage Reduction in Structures with Electrical Circuitry solve?"},{"answer":"The specific inventors for the Warpage Reduction in Structures with Electrical Circuitry patent (US-9853000) are not provided in the prompt's `Inventors` field, which is left blank. However, patents are typically assigned to the company or organization that funded the research and development. In this case, the `Assignee` field is also blank in the provided data. \n\nGenerally, large semiconductor companies or research institutions are at the forefront of such complex material science and manufacturing process innovations. These entities invest heavily in R&D to overcome fundamental challenges like wafer warpage, which directly impacts their production efficiency and competitive edge. The innovation described in Warpage Reduction in Structures with Electrical Circuitry reflects a deep understanding of thin-film mechanics, stress engineering, and advanced material science, characteristic of leading research teams in the microelectronics industry.","question":"Who invented Warpage Reduction in Structures with Electrical Circuitry?"},{"answer":"The Warpage Reduction in Structures with Electrical Circuitry patent offers several transformative benefits for the semiconductor industry and beyond:\n\n1.  **Significantly Improved Manufacturing Yields:** By ensuring wafers remain perfectly flat throughout the fabrication process, the technology dramatically reduces defects caused by misalignment, leading to a higher percentage of functional chips per wafer. This directly translates to increased profitability for manufacturers.\n2.  **Enhanced Device Reliability and Performance:** Flatter wafers result in more precise circuit patterns and stronger inter-layer bonds, leading to more reliable and higher-performing electronic devices, especially critical for advanced 3D-ICs and complex packages.\n3.  **Reduced Production Costs:** Increased yields mean less material waste and significantly less rework, leading to substantial cost savings in materials, energy, and labor. Faster production cycles also contribute to overall operational efficiency.\n4.  **Enabling Advanced Technologies:** The ability to consistently achieve ultra-flat wafers removes a critical barrier for the adoption of next-generation packaging technologies like 3D-IC stacking, wafer-level packaging, and heterogeneous integration, fostering further innovation in device design.\n5.  **Dynamic Thermal Stability:** The potential use of 'smart' materials like tantalum-aluminum allows the system to actively maintain flatness through challenging thermal cycling, providing robustness against temperature-induced warpage that traditional methods cannot match.","question":"What are the key benefits of Warpage Reduction in Structures with Electrical Circuitry?"},{"answer":"Warpage Reduction in Structures with Electrical Circuitry distinguishes itself from prior art solutions primarily through its active, two-stage, and dynamically adaptive approach to stress management, contrasting sharply with traditional passive or reactive methods.\n\nPrior art solutions typically involve:\n\n*   **Passive Stress Mitigation:** Adjusting deposition parameters or using stress-compensating layers to minimize stress during fabrication. These methods are often a compromise, limited in their effectiveness across varying temperatures or for complex material stacks.\n*   **Reactive Correction:** Attempting to flatten wafers after warpage has occurred, often using mechanical clamping or localized thermal treatments. These methods are temporary, may introduce new stresses, or are not suitable for all process steps.\n\nIn contrast, Warpage Reduction in Structures with Electrical Circuitry is innovative because:\n\n1.  **Active Over-balancing:** It deliberately induces an opposite, over-correcting stress, providing a precise starting point for subsequent fine-tuning, rather than merely trying to achieve zero stress from the outset.\n2.  **Multi-Modal Controlled Relaxation:** It offers versatile methods (selective debonding, recess formation, phase change) for precisely reducing the induced stress, allowing for fine-tuned, localized control over warpage.\n3.  **Dynamic Thermal Compensation:** The potential use of materials like tantalum-aluminum, which can dynamically adjust their internal stress based on temperature, is a significant departure. This enables continuous flatness through thermal cycling, a capability largely absent in static prior art solutions. This makes the invention more robust and adaptable to the complex thermal budgets of modern semiconductor manufacturing.","question":"How is Warpage Reduction in Structures with Electrical Circuitry different from prior art?"},{"answer":"Warpage Reduction in Structures with Electrical Circuitry (US-9853000) is poised to have a transformative impact across a wide range of industries that rely on advanced microelectronics.\n\n1.  **Semiconductor Manufacturing:** This is the primary and most direct impact. Foundries, integrated device manufacturers (IDMs), and outsourced semiconductor assembly and test (OSAT) providers will benefit from increased yields, reduced costs, and enhanced reliability in their production lines. This includes manufacturers of logic chips, memory, and specialized processors.\n2.  **Consumer Electronics:** Devices like smartphones, tablets, laptops, and wearables will become more reliable, potentially smaller, and more powerful as the foundational chips are produced with higher precision and fewer defects. This directly translates to better product quality and user experience.\n3.  **Automotive Electronics:** The growing complexity of in-car systems, including ADAS (Advanced Driver-Assistance Systems), infotainment, and autonomous driving, demands extremely robust and reliable chips. Warpage Reduction in Structures with Electrical Circuitry will ensure the integrity of these critical components.\n4.  **Data Centers and AI:** High-performance computing, cloud infrastructure, and AI accelerators rely on densely packed, multi-chip modules. This technology will enable the reliable fabrication of the complex 3D-ICs and chiplets required for these demanding applications.\n5.  **Medical Devices:** Precision and reliability are paramount in medical implants and diagnostic equipment. Improved chip quality from this innovation will enhance the safety and performance of these life-critical devices.\n6.  **IoT (Internet of Things):** The proliferation of connected devices, often requiring tiny, low-power chips, will benefit from more efficient and reliable manufacturing processes, accelerating the growth of the IoT ecosystem.","question":"What industries will Warpage Reduction in Structures with Electrical Circuitry impact?"},{"answer":"The Warpage Reduction in Structures with Electrical Circuitry patent, identified by the number US-9853000, has key dates associated with its lifecycle.\n\n*   **Filing Date:** The patent application for Warpage Reduction in Structures with Electrical Circuitry was initially filed on **2016-06-14**.\n*   **Publication Date:** The patent was subsequently published, indicating its official grant and public disclosure, on **2017-12-26**.\n\nThese dates are significant in intellectual property. The filing date establishes the priority date for the invention, which is crucial for determining novelty against prior art. The publication date marks when the full details of the invention became publicly accessible, allowing others to understand its scope and implications. The relatively short period between filing and publication (just over a year and a half) suggests a relatively smooth examination process, possibly due to the clear novelty and utility of the innovation in addressing a pressing industry need like wafer warpage.","question":"When was Warpage Reduction in Structures with Electrical Circuitry filed/granted?"},{"answer":"The commercial applications of Warpage Reduction in Structures with Electrical Circuitry (US-9853000) are extensive and crucial for the advancement of modern electronics, particularly in areas requiring high precision and reliability.\n\n1.  **Advanced Packaging:** This technology is a cornerstone for next-generation packaging. It enables higher yields in 3D-IC stacking (where multiple chips are layered), wafer-level packaging (WLP), and fan-out wafer-level packaging (FOWLP), which are critical for creating smaller, more powerful, and energy-efficient devices for smartphones, AI accelerators, and data centers.\n2.  **High-Performance Computing (HPC):** For CPUs, GPUs, and specialized AI processors, maintaining wafer flatness is essential for the precise alignment of billions of transistors and interconnections. This innovation directly supports the manufacturing of these complex, high-value components.\n3.  **Memory Devices:** In the production of advanced memory (e.g., HBM, 3D NAND), where multiple layers are stacked, warpage control is paramount for achieving high density and yield. Warpage Reduction in Structures with Electrical Circuitry can significantly improve the manufacturing efficiency of these memory solutions.\n4.  **MEMS (Micro-Electro-Mechanical Systems) and Sensors:** Many MEMS devices and sensors are built on thin wafers and are highly sensitive to stress-induced deformations. This technology can ensure the precise fabrication needed for their functionality and reliability.\n5.  **Compound Semiconductors:** Beyond silicon, the principles of warpage reduction can be applied to compound semiconductor wafers (e.g., GaAs, GaN), which are used in RF communications, power electronics, and optoelectronics, further enhancing their manufacturing yields.\n6.  **Flexible Electronics:** As the industry moves towards more flexible substrates, precise stress management will be even more critical. This innovation offers foundational principles that could be adapted for manufacturing bendable and wearable electronic devices.","question":"What are the commercial applications of Warpage Reduction in Structures with Electrical Circuitry?"},{"answer":"The Warpage Reduction in Structures with Electrical Circuitry patent lays a robust foundation for exciting future developments in semiconductor manufacturing and beyond. Several key areas are expected to evolve:\n\n1.  **Advanced 'Smart' Materials:** Further research will likely focus on discovering and optimizing new materials for the stress/warpage management layer that exhibit even more pronounced and tunable dynamic stress adjustment capabilities. This could involve exploring novel alloys, composites, or meta-materials that can respond to a broader range of environmental stimuli (e.g., electric fields, light) in addition to temperature.\n2.  **Real-time Adaptive Control Systems:** Integration with advanced AI and machine learning algorithms will enable real-time, in-situ warpage detection and adaptive process control. Sensors could continuously monitor wafer flatness, feeding data to an AI that dynamically adjusts the processing parameters (e.g., laser power for debonding, etch duration for recesses, or thermal profiles for phase changes) of the management layer to maintain optimal planarity throughout the entire fabrication process. This would lead to fully autonomous and highly efficient warpage control.\n3.  **Integration with Micro-Actuators:** Future developments might see the integration of micro-actuators directly onto the stress management layer or the wafer itself. These tiny mechanical components, controlled electronically, could provide ultra-fine, localized adjustments to warpage in real-time, offering unprecedented precision in achieving and maintaining flatness.\n4.  **Application to Flexible and Heterogeneous Substrates:** While currently focused on traditional wafers, the principles of Warpage Reduction in Structures with Electrical Circuitry are highly adaptable. Future work will likely extend its application to flexible substrates for bendable electronics, as well as complex heterogeneous integration where dissimilar materials with vastly different properties are combined, presenting even greater warpage challenges.\n5.  **Scaling and Cost Reduction:** As the technology matures, efforts will be made to scale the processes for higher throughput and reduce the cost of implementation, making it more accessible to a broader range of manufacturers and enabling even more widespread adoption across the semiconductor industry.","question":"What are the future developments expected for Warpage Reduction in Structures with Electrical Circuitry?"}],"topics":["Warpage Reduction in Structures with Electrical Circuitry","wafer warpage","semiconductor manufacturing","stress management","microelectronics","technical","background","semiconductor"],"tech_cluster":null},"seo":{"title":"Warpage Reduction in Structures with Electrical Circuitry - Patent US-9853000","description":"Discover Warpage Reduction in Structures with Electrical Circuitry, a groundbreaking patent for active wafer warpage mitigation. Boost yields, enhance reliability.","keywords":["Warpage Reduction in Structures with Electrical Circuitry","wafer warpage","semiconductor manufacturing","stress management","microelectronics","advanced packaging","yield improvement","thermal cycling","patent US-9853000","tantalum-aluminum","electrical circuitry warpage","chip fabrication","planarization technology"]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9853000","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-9853000","citation_suggestion":"Patentable. \"Warpage reduction in structures with electrical circuitry\" (US-9853000). https://patentable.app/patents/US-9853000","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9853000","json":"https://patentable.app/api/llm-context/US-9853000","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T16:30:20.642Z"}