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The Effects of Pad Design on Chemical Mechanical Planarization (CMP) Performance

The Effects of Pad Design on Chemical Mechanical Planarization (CMP) Performance
Author: Sunghoon Lee
Publisher:
Total Pages: 302
Release: 2006
Genre:
ISBN: 9780542825484

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The polishing results showed that MRR is dependent on the designs of micro feature distribution, which control the slurry efficiency. And, overpolishing, dishing and erosion are dominantly affected by the size of contact area.


Advances in Chemical Mechanical Planarization (CMP)

Advances in Chemical Mechanical Planarization (CMP)
Author: Babu Suryadevara
Publisher: Woodhead Publishing
Total Pages: 650
Release: 2021-09-10
Genre: Technology & Engineering
ISBN: 0128218193

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Advances in Chemical Mechanical Planarization (CMP), Second Edition provides the latest information on a mainstream process that is critical for high-volume, high-yield semiconductor manufacturing, and even more so as device dimensions continue to shrink. The second edition includes the recent advances of CMP and its emerging materials, methods, and applications, including coverage of post-CMP cleaning challenges and tribology of CMP. This important book offers a systematic review of fundamentals and advances in the area. Part one covers CMP of dielectric and metal films, with chapters focusing on the use of current and emerging techniques and processes and on CMP of various materials, including ultra low-k materials and high-mobility channel materials, and ending with a chapter reviewing the environmental impacts of CMP processes. New content addressed includes CMP challenges with tungsten, cobalt, and ruthenium as interconnect and barrier films, consumables for ultralow topography and CMP for memory devices. Part two addresses consumables and process control for improved CMP and includes chapters on CMP pads, diamond disc pad conditioning, the use of FTIR spectroscopy for characterization of surface processes and approaches for defection characterization, mitigation, and reduction. Advances in Chemical Mechanical Planarization (CMP), Second Edition is an invaluable resource and key reference for materials scientists and engineers in academia and R&D. Reviews the most relevant techniques and processes for CMP of dielectric and metal films Includes chapters devoted to CMP for current and emerging materials Addresses consumables and process control for improved CMP, including post-CMP


Effect of Chemical Mechanical Planarization Processing Conditions on Polyurethane Pad Properties

Effect of Chemical Mechanical Planarization Processing Conditions on Polyurethane Pad Properties
Author: Grace Siu-Yee Ng
Publisher:
Total Pages: 118
Release: 2003
Genre:
ISBN:

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Chemical Mechanical Planarization (CMP) is a vital process used in the semiconductor industry to isolate and connect individual transistors on a chip. However, many of the fundamental mechanisms of the process are yet to be fully understood and defined. The difficulty in analyzing the CMP process lies in the fact that many factors, such as properties of consumables, polishing speed, polishing pressure, etc, can affect the outcome of the CMP process. This paper focuses on the thermal and mechanical properties of one of the consumables - the CMP soft pad. During the CMP process, the pad is subjected to high temperatures and chemicals from the slurry. Thus, the properties of the pad can be irreversibly changed, affecting the planarity of the resultant wafer. In this study, the CMP processing conditions were simulated in the laboratory by annealing the pad at high temperatures and soaking the pad in slurry and DIW for up to two months. The properties of the CMP pad were then measured using four thermo analytical tools - dynamic mechanical analyzer (DMA), thermo-gravimetric analyzer (TGA), thermomechanical analyzer (TMA), and modulated differential scanning calorimeter (MDSC). Results suggested that both annealing at temperatures above 140 °C and soaking in slurry for up to two weeks significantly increase the storage modulus of the sample and promote pad shrinkage in the transverse dimension. Thus, it is not recommended that the soft pad be used at operating temperatures above 140 °C and for polishing times of more than two weeks (336 hrs).


Microelectronic Applications of Chemical Mechanical Planarization

Microelectronic Applications of Chemical Mechanical Planarization
Author: Yuzhuo Li
Publisher: John Wiley & Sons
Total Pages: 760
Release: 2007-12-04
Genre: Technology & Engineering
ISBN: 9780470180891

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An authoritative, systematic, and comprehensive description of current CMP technology Chemical Mechanical Planarization (CMP) provides the greatest degree of planarization of any known technique. The current standard for integrated circuit (IC) planarization, CMP is playing an increasingly important role in other related applications such as microelectromechanical systems (MEMS) and computer hard drive manufacturing. This reference focuses on the chemical aspects of the technology and includes contributions from the foremost experts on specific applications. After a detailed overview of the fundamentals and basic science of CMP, Microelectronic Applications of Chemical Mechanical Planarization: * Provides in-depth coverage of a wide range of state-of-the-art technologies and applications * Presents information on new designs, capabilities, and emerging technologies, including topics like CMP with nanomaterials and 3D chips * Discusses different types of CMP tools, pads for IC CMP, modeling, and the applicability of tribometrology to various aspects of CMP * Covers nanotopography, CMP performance and defect profiles, CMP waste treatment, and the chemistry and colloidal properties of the slurries used in CMP * Provides a perspective on the opportunities and challenges of the next fifteen years Complete with case studies, this is a valuable, hands-on resource for professionals, including process engineers, equipment engineers, formulation chemists, IC manufacturers, and others. With systematic organization and questions at the end of each chapter to facilitate learning, it is an ideal introduction to CMP and an excellent text for students in advanced graduate courses that cover CMP or related semiconductor manufacturing processes.


Nanoparticle Engineering for Chemical-Mechanical Planarization

Nanoparticle Engineering for Chemical-Mechanical Planarization
Author: Ungyu Paik
Publisher: CRC Press
Total Pages: 222
Release: 2019-04-15
Genre: Science
ISBN: 1000023222

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In the development of next-generation nanoscale devices, higher speed and lower power operation is the name of the game. Increasing reliance on mobile computers, mobile phone, and other electronic devices demands a greater degree of speed and power. As chemical mechanical planarization (CMP) progressively becomes perceived less as black art and more as a cutting-edge technology, it is emerging as the technology for achieving higher performance devices. Nanoparticle Engineering for Chemical-Mechanical Planarization explains the physicochemical properties of nanoparticles according to each step in the CMP process, including dielectric CMP, shallow trend isolation CMP, metal CMP, poly isolation CMP, and noble metal CMP. The authors provide a detailed guide to nanoparticle engineering of novel CMP slurry for next-generation nanoscale devices below the 60nm design rule. They present design techniques using polymeric additives to improve CMP performance. The final chapter focuses on novel CMP slurry for the application to memory devices beyond 50nm technology. Most books published on CMP focus on the polishing process, equipment, and cleaning. Even though some of these books may touch on CMP slurries, the methods they cover are confined to conventional slurries and none cover them with the detail required for the development of next-generation devices. With its coverage of fundamental concepts and novel technologies, this book delivers expert insight into CMP for all current and next-generation systems.


Chemical Mechanical Planarization in IC Device Manufacturing III

Chemical Mechanical Planarization in IC Device Manufacturing III
Author: Robert Leon Opila
Publisher: The Electrochemical Society
Total Pages: 664
Release: 2000
Genre: Technology & Engineering
ISBN: 9781566772600

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This volume contains the proceedings of the third international symposium on Chemical Mechanical Planarization integrated circuit device manufacturing held at the 196th Meeting of the Electrochemical Society in Honolulu, Hawaii. ( October 20 -22 1999).


Chemical Mechanical Planarization IV

Chemical Mechanical Planarization IV
Author: R. L. Opila
Publisher: The Electrochemical Society
Total Pages: 350
Release: 2001
Genre: Technology & Engineering
ISBN: 9781566772938

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Process Optimization and Consumable Development for Chemical Mechanical Planarization (CMP) Processes

Process Optimization and Consumable Development for Chemical Mechanical Planarization (CMP) Processes
Author: Subrahmanya R. Mudhivarthi
Publisher:
Total Pages:
Release: 2007
Genre:
ISBN:

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ABSTRACT: Chemical Mechanical Planarization (CMP) is one of the most critical processing steps that enables fabrication of multilevel interconnects. The success of CMP process is limited by the implementation of an optimized process and reduction of process generated defects along with post CMP surface characteristics such as dishing and erosion. This thesis investigates to identify various sources of defects and studies the effect of factors that can be used to optimize the process. The major contributions of this work are: Understanding the effect of temperature rise on surface tribology, electrochemistry and post CMP pattern effects during the CMP process; investigating the effect of pad conditioning temperature and slurry flow rate on tribology and post CMP characteristics; development of novel slurries using polymer hybrid particles and improvement in slurry metrology to reduce surface damage during CMP. From the current research, it was shown that the effect of temperature on CMP tribology is predominantly affected by the polishing parameters and the polishing pad characteristics more than the chemical nature of the slurry. The effect of temperature is minimal on the resulting surface roughness but the with-in die non-uniformity is significantly affected by the temperature at the interface. Secondly, in this research it was shown that the effectiveness and aggressiveness of the pad conditioning process is highly influenced by the conditioning temperature. This aspect can be utilized to optimize the parameters for the pad conditioning process. Further, post CMP characteristics such as dishing, erosion and metal loss on patterned samples were shown to decrease with increase in slurry flow rate. This research then concentrates on the development of novel low defect slurry using polymer hybrid abrasive particles. Several varieties of surface functionalized polymer particles were employed to make oxide CMP slurries. These novel slurries proved to be potential candidates to reduce surface damage during CMP as they resulted in low coefficient of friction and much less surface scratches as compared to conventional abrasives. Thus, this research helps to reduce defects and non-planarity issues during CMP process thereby improving yield and reducing the cost of ownership.


Chemical Mechanical Planarization of Microelectronic Materials

Chemical Mechanical Planarization of Microelectronic Materials
Author: Joseph M. Steigerwald
Publisher: John Wiley & Sons
Total Pages: 337
Release: 2008-09-26
Genre: Science
ISBN: 3527617752

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Chemical Mechanical Planarization (CMP) plays an important role in today's microelectronics industry. With its ability to achieve global planarization, its universality (material insensitivity), its applicability to multimaterial surfaces, and its relative cost-effectiveness, CMP is the ideal planarizing medium for the interlayered dielectrics and metal films used in silicon integrated circuit fabrication. But although the past decade has seen unprecedented research and development into CMP, there has been no single-source reference to this rapidly emerging technology-until now. Chemical Mechanical Planarization of Microelectronic Materials provides engineers and scientists working in the microelectronics industry with unified coverage of both the fundamental mechanisms and engineering applications of CMP. Authors Steigerwald, Murarka, and Gutmann-all leading CMP pioneers-provide a historical overview of CMP, explain the various chemical and mechanical concepts involved, describe CMP materials and processes, review the latest scientific data on CMP worldwide, and offer examples of its uses in the microelectronics industry. They provide detailed coverage of the CMP of various materials used in the making of microcircuitry: tungsten, aluminum, copper, polysilicon, and various dielectric materials, including polymers. The concluding chapter describes post-CMP cleaning techniques, and most chapters feature problem sets to assist readers in developing a more practical understanding of CMP. The only comprehensive reference to one of the fastest growing integrated circuit manufacturing technologies, Chemical Mechanical Planarization of Microelectronic Materials is an important resource for research scientists and engineers working in the microelectronics industry. An indispensable resource for scientists and engineers working in the microelectronics industry Chemical Mechanical Planarization of Microelectronic Materials is the only comprehensive single-source reference to one of the fastest growing integrated circuit manufacturing technologies. It provides engineers and scientists who work in the microelectronics industry with unified coverage of both the fundamental mechanisms and engineering applications of CMP, including: * The history of CMP * Chemical and mechanical underpinnings of CMP * CMP materials and processes * Applications of CMP in the microelectronics industry * The CMP of tungsten, aluminum, copper, polysilicon, and various dielectrics, including polymers used in integrated circuit fabrication * Post-CMP cleaning techniques * Chapter-end problem sets are also included to assist readers in developing a practical understanding of CMP.