Fabrication of conductive metal lines by plate-to-roll pattern transfer utilizing edge dewetting and flexographic printing

Kwak, Moon Kyu; Shin, Kyu Ho; Yoon, Eung Yeoul; Suh, Kahp Y.

doi:10.1016/j.jcis.2009.11.003

Cited by 36 publications

(27 citation statements)

References 32 publications

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“…For thick film deposition through flexographic, several printing passes with similar parameters are required, which also minimize sheet resistance. Repeating the same procedure needs proper alignment of the equipment for subsequent layers, which adds to the complexities of the system [64]. The current technology limits the highly desirable features such as high-switching speed and reduced supply voltage that are needed for many applications.…”

Section: Flexographic Printingmentioning

confidence: 99%

Smart Manufacturing Technologies for Printed Electronics

Khan¹,

Ali²,

Bermak³

2020

Hybrid Nanomaterials - Flexible Electronics Materials

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Fabrication of electronic devices on different flexible substrates is an area of significant interest due to low cost, ease of fabrication, and manufacturing at ambient conditions over large areas. Over the time, a number of printing technologies have been developed to fabricate a wide range of electronic devices on nonconventional substrates according to the targeted applications. As an increasing interest of electronic industry in printed electronics, further expansion of printed technologies is expected in near future to meet the challenges of the field in terms of scalability, yield, and diversity and biocompatibility. This chapter presents a comprehensive review of various printing electronic technologies commonly used in the fabrication of electronic devices, circuits, and systems. The different printing techniques based on contact/noncontact approach of the printing tools with the target substrates have been explored. These techniques are assessed on the basis of ease of operation, printing resolutions, processability of materials, and ease of optimization of printed structures. The various technical challenges in printing techniques, their solutions with possible alternatives, and the potential research directions are highlighted. The latest developments in assembling various printing tools for enabling high speed and batch manufacturing through roll-to-roll systems are also explored.

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Section: Flexographic Printingmentioning

confidence: 99%

Smart Manufacturing Technologies for Printed Electronics

Khan¹,

Ali²,

Bermak³

2020

Hybrid Nanomaterials - Flexible Electronics Materials

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“…[ 25 ] In combination with slot-die coating, n -octanol has been fl exographically printed on poly(3-hexylthiophene): phenyl-C61-butyric acid methyl ester (P3HT:PCBM) to enhance the wettability for the following slot-die coated poly(3,4-ethylenedioxythiophene) -poly(styrene sulfonate) (PEDOT-PSS) layer for the fabrication of a polymer solar cell on PET foil. [ 4 ] With fl exography, the dielectric and gate of a top-gate OTFT on PET foil have been printed, being the only mass-printing technique applying a low pressure in order to avoid destruction of the underlying layers.…”

Section: Progress Reportmentioning

confidence: 99%

“…[ 23 ] However, fl exographic printing of a liquid-phase ink material is prone to fi lm instability and dewetting, thereby forming many defects such as open lines. [ 25 ] Gravure printing is a mechanically simple process known to be advantageous for its high-throughput, high-quality printing of halftone images, and printability of different materials. [ 46 ] Adjustment of the cylinder's cup design [ 27 ] (e.g., depth of cell) and precise adjustment of each ink formulation regarding its viscosity and surface energy, [ 47 ] allows printing of low viscosity inks (e.g., semiconductor inks) [ 26 ] or thick layers on fl exible substrates, not to be handled by the other mass printing techniques.…”

Section: Inkjet Printingmentioning

confidence: 99%

Fabrication of Transistors on Flexible Substrates: from Mass‐Printing to High‐Resolution Alternative Lithography Strategies

2012

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In this report, the development of conventional, mass-printing strategies into high-resolution, alternative patterning techniques is reviewed with the focus on large-area patterning of flexible thin-film transistors (TFTs) for display applications. In the first part, conventional and digital printing techniques are introduced and categorized as far as their development is relevant for this application area. The limitations of conventional printing guides the reader to the second part of the progress report: alternative-lithographic patterning on low-cost flexible foils for the fabrication of flexible TFTs. Soft and nanoimprint lithography-based patterning techniques and their limitations are surveyed with respect to patterning on low-cost flexible foils. These show a shift from fabricating simple microlense structures to more complicated, high-resolution electronic devices. The development of alternative, low-temperature processable materials and the introduction of high-resolution patterning strategies will lead to the low-cost, self-aligned fabrication of flexible displays and solar cells from cheaper but better performing organic materials.

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“…More importantly, they also have established themselves as the indispensable tools for new areas such as photonics, microfluidics, biotechnology and flexible electronics including organic electronics [1]. These techniques include soft lithography [2][3][4][5][6][7] based on soft molds typically based on poly(dimethyl siloxane) (PDMS), imprint lithography [8][9][10][11] based on hard molds such as silicon wafers, and rigiflex lithography [12,13] based on rigiflex molds such as poly(urethane acrylate) (PUA) [24,15]. Although the soft lithography has demonstrated patterning capability down to the molecular level [16], its applications for densely populated small features have been limited due to the deformation problems of the mold.…”

Section: Introductionmentioning

confidence: 99%