This book offers a wealth of knowledge and information about the fundamental and practical aspects of flexible organic light-emitting diode (OLED) devices. The book provides an overview of these devices by considering their merits and business potential, the history of their research and development, the fundamental technology, and required properties for materials, devices, processes, and future trends of flexible OLED devices. The practical sections describe novel, cutting-edge expertise for flexible substrates, gas barriers, encapsulation, novel electrodes, and on-demand patterning for OLED devices. Applications of the technologies of ultra-thin glass, stainless steel foil, and barrier films are described as flexible substrates. The book also explains features such as dry-barrier layers, wet-barrier layers, multi-layer barrier structures, dam-fill encapsulation, thin film encapsulation (TFE), and laminating encapsulation. In addition, there are explanations of novel electrodes and on-demand ink-jet patterning, both of which are applicable to flexible OLED devices. As the novel electrodes, transparent conducting polymer, silver nanowire (AgNW), metal-mesh and roll-to-roll (R2R) process technologies are included. The know-how that is described here is applicable to flexible devices, not only for OLEDs, OPVs, OTFTs, and others but also for sensors, wearable devices, robots, and healthcare devices. The information contained in this valuable book is useful for all scientists, engineers, and managers who are interested in the field of flexible devices.
Author(s): Mitsuhiro Koden
Series: SpringerBriefs in Applied Sciences and Technology
Publisher: Springer
Year: 2022
Language: English
Pages: 107
City: Singapore
Preface
Contents
1 Introduction
References
2 Fundamentals of Flexible OLEDs
2.1 Fundamentals of OLEDs
2.2 Device Structures of Flexible OLEDs
2.3 Fabrication Processes of Flexible OLEDs
2.4 Required Properties for Flexible OLEDs
References
3 History of Flexible OLEDs
3.1 Early Research and Development of Flexible OLEDs
3.2 Development and Commercialization of Active-Matrix Flexible OLED Displays
3.3 Development and Commercialization of Flexible OLED Lighting
References
4 Flexible Substrates
4.1 Requirements for Flexible Substrates
4.2 Candidates of Flexible Substrates
4.3 Ultra-Thin Glass
4.4 Stainless Steel Foil
4.5 Barrier Film
References
5 Gas Barrier Technologies
5.1 Overview of Gas Barrier Properties
5.2 Evaluation Methods for Gas Barrier Properties
5.3 Dry Gas Barrier Layers Deposited by Roll-to-Roll (R2R) PE-CVD
5.4 Multi-Layer Barrier Using Wet and Dry Layers
5.5 Multi-Layer Barrier Using Sputtering and ALD
References
6 Encapsulating Technologies
6.1 Fundamentals of Encapsulating Technologies for Flexible OLEDs
6.2 Dam-Fill Encapsulation
6.3 Thin Film Encapsulation (TFE)
6.4 Laminating Encapsulation
References
7 Novel Electrode Technologies
7.1 Background
7.2 Transparent Conducting Polymer
7.3 Silver Nanowire (AgNW)
7.4 Implanted Metal-Mesh Electrode
7.5 Roll-to-Roll (R2R) Fabrication of Transparent Electrodes
References
8 OLEDs with On-Demand Patterns by Ink-Jet Printing
8.1 Background
8.2 Experimental
8.3 On-Demand Patterns of Insulators Printed by Ink Jet
8.4 OLEDs Fabricated on Insulators Patterns by Ink-Jet Printing
8.5 OLEDs with On-Demand Patterns by Ink-Jet Printing
References
