Study on Application of UV-processed Molecular Alignment in Liquid Crystal Devices PDF Download
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Author:
Publisher:
ISBN:
Category : Liquid crystal displays
Languages : en
Pages : 110
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Book Description
Author:
Publisher:
ISBN:
Category : Liquid crystal displays
Languages : en
Pages : 110
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Book Description
Author: Kohki Takatoh
Publisher: CRC Press
ISBN: 1420023012
Category : Science
Languages : en
Pages : 280
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Book Description
Alignment phenomena are characteristic of liquid crystalline materials, and understanding them is critically important in understanding the essential features and behavior of liquid crystals and the performance of Liquid Crystal Devices (LCDs). Furthermore, in LCD production lines, the alignment process is of practical importance. Alignment Technologies and Applications of Liquid Crystal Devices demonstrates both the fundamental and practical aspects of alignment phenomena in liquid crystals. The physical basis of alignment phenomena is first introduced in order to aid the understanding of the various physical phenomena observed in the interface between liquid crystalline materials and alignment layer surfaces. Methods for the characterization of surfaces, which induce the alignment phenomena, and of the alignment layer itself are introduced. These methods are useful for the research of liquid crystalline materials and devices in academic research as well as in industry. In the practical sections, the alignment methods used in the LCD production lines are introduced with various other trials for the alignment technologies. LCD performances are also discussed in relation to alignment phenomena. The authors have a wide range of experience in both academic research and in industry. This book will be of interest to researchers and engineers working in the LCD industry, and for physics and chemistry researchers studying liquid crystalline materials.
Author: Theo Rasing
Publisher: Springer Science & Business Media
ISBN: 3662101572
Category : Technology & Engineering
Languages : en
Pages : 301
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Book Description
This book describes the state of the art of our understanding of liquid-crystal interfaces on a molecular level. The interactions of liquid crystal molecules with a surface play an essential role in the operation of liquid crystal displays (LCD's) and other LC devices that are based on the controllable anchoring of LC molecules on polymer coated surfaces. This book addresses the microscopic interaction between a macromolecule (liquid crystal, polymer) and a wall, using state of the art surface and interface-sensitive experimental techniques, such as Atomic Force Microscopy (AFM), Scanning Tunneling Microscopy (STM), Linear and Nonlinear Optical Microscopy and (Dynamic) Light Scattering (DLS). These experimental techniques were complemented with computer simulations and supra molecular chemistry methods to develop controllable polymeric surfaces.
Author:
Publisher: ScholarlyEditions
ISBN: 148167658X
Category : Technology & Engineering
Languages : en
Pages : 127
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Book Description
Imides—Advances in Research and Application: 2013 Edition is a ScholarlyBrief™ that delivers timely, authoritative, comprehensive, and specialized information about Naphthalimides in a concise format. The editors have built Imides—Advances in Research and Application: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Naphthalimides in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Imides—Advances in Research and Application: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Author: L Vicari
Publisher: CRC Press
ISBN: 1000687473
Category : Science
Languages : en
Pages : 387
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Book Description
In recent years, there has been increasing activity in the research and design of optical systems based on liquid crystal (LC) science. Bringing together contributions from leading figures in industry and academia, Optical Applications of Liquid Crystals covers the range of existing applications as well as those in development. Unique in its thorou
Author:
Publisher: ScholarlyEditions
ISBN: 1481679546
Category : Science
Languages : en
Pages : 172
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Book Description
Propiophenones—Advances in Research and Application: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Propafenone. The editors have built Propiophenones—Advances in Research and Application: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Propafenone in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Propiophenones—Advances in Research and Application: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Author: Muhammad Imran Malik
Publisher: Elsevier
ISBN: 0323955126
Category : Technology & Engineering
Languages : en
Pages : 802
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Book Description
Handbook of Nanomaterials: Electronics, Information Technology, Energy, Transportation, and Consumer Products offers a comprehensive resource that introduces the role of nanotechnology and nanomaterials in a broad range of areas, covering fundamentals, methods, and applications. In this volume, the initial chapters introduce the core concepts of nanotechnology, and synthesis methods and characterization techniques for nanomaterials. This is followed by dedicated sections focusing on key application areas across electronics, information technology, energy, transportation, and consumer products. In each chapter, detailed but concise information is provided on a specific application, covering methods and latest advances. This book is of interest to researchers and advanced students approaching nanotechnology from a range of disciplines, including materials science and engineering, chemistry, chemical engineering, electronics, energy, biomedicine, environmental science, food science, and agriculture, as well as scientists, engineers, and R&D professionals with an interest in the use of nanomaterials across a range of industries. Introduces the reader to key applications of nanomaterials Provides broad, systematic, concise coverage, supporting readers from a range of disciplines Covers applications across electronics, information technology, energy, transportation, and consumer products
Author: Amalya Minasyan
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
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Book Description
The alignment control of liquid crystal (LC) molecules is of great importance for the most of LC based electro-optical applications such as displays, modulators, and variable attenuators. This control realises, particularly, by the interactions between LC molecules and the adjacent surface. This makes the surface alignment one of the key factors for the improvement of LC-based devices' performance. This PhD thesis reports an experimental study of alignment control of LC molecules by surfaces, and explores the possibility of practical avenues. First, dual frequency nematic LCs (DF-NLC) and thin reactive mesogen (RM) films, cast on internal surfaces of cell substrate, were used to build surface polymer stabilized structures. To form these surface-stabilized structures, a partial interpenetration between the LC and RM molecules was allowed while applying an orienting dielectric torque (positive or negative) to the material system. Then, after a short interpenetration period between the RM layer and the bulk LC, UV exposition was added to definitely cure the material system. These systems demonstrated great potential for the surface alignment control of LCs, enabling the ''programming'' of LC cells with electrically controllable light scattering, which can be used in privacy windows and smart lighting applications. Electro-optic and microscopic studies were done to characterize these surface-stabilized structures. We showed that the contrasts of light scatter modulation, polarization dependence and response times can be noticeably improved by the dual-frequency control. Afterward, dual frequency chiral LCs (DF-CLC) were used to build surface-stabilized structures, which in addition to the controllable scattering, showed also resonant reflection phenomenon. Partially cured and oriented RM layers were used as alignment layers for DF-CLC. The role of the pre-curing duration of RM in the behavior of the cell was observed by electro-optical and spectroscopic studies. Our morphological studies showed that the molecular interdiffusion between RM layer and bulk LC during the programming process generates polymer aggregates on the cell's internal surfaces, which are at the origin of formation of controllable light scattering.
Author: Mark Warner
Publisher: Oxford University Press
ISBN: 9780199214860
Category : Mathematics
Languages : en
Pages : 423
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Book Description
This text is a primer for liquid crystals, polymers, rubber and elasticity. It is directed at physicists, chemists, material scientists, engineers and applied mathematicians at the graduate student level and beyond.
Author: Vladimir G. Chigrinov
Publisher: John Wiley & Sons
ISBN: 0470751797
Category : Technology & Engineering
Languages : en
Pages : 248
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Book Description
Photoalignment possesses significant advantages in comparison with the usual ‘rubbing’ treatment of the substrates of liquid crystal display (LCD) cells as it is a non-contact method with a high resolution. A new technique recently pioneered by the authors of this book, namely the photo-induced diffusion reorientation of azodyes, does not involve any photochemical or structural transformations of the molecules. This results in photoaligning films which are robust and possess good aligning properties making them particularly suitable for the new generation of liquid crystal devices. Photoalignment of Liquid Crystalline Materials covers state-of-the-art techniques and key applications, as well as the authors’ own diffusion model for photoalignment. The book aims to stimulate new research and development in the field of liquid crystalline photoalignment and in so doing, enable the technology to be used in large scale LCD production. Key features: Provides a full examination of the mechanisms of photoalignment. Examines the properties of liquid crystals during photoalignment, with particular reference made to the effect on their chemical structure and stability. Considers the most useful photosensitive materials and preparation procedures suitable for liquid crystalline photoalignment. Presents several methods for photoalignment of liquid crystals. Compares various applications of photoalignment technology for in-cell patterned polarizers and phase retarders, transflective and micro displays, security and other liquid crystal devices. Through its interdisciplinary approach, this book is aimed at a wide range of practising electrical engineers, optical engineers, display technologists, materials scientists, physicists and chemists working on the development of liquid crystal devices. It will also appeal to researchers and graduate students taking courses on liquid crystals or display technologies. The Society for Information Display (SID) is an international society, which has the aim of encouraging the development of all aspects of the field of information display. Complementary to the aims of the society, the Wiley-SID series is intended to explain the latest developments in information display technology at a professional level. The broad scope of the series addresses all facets of information displays from technical aspects through systems and prototypes to standards and ergonomics
