Direct imaging exposure equipment with high overlay accuracy for flexible substrate in roll-to-roll method

2017 ◽  
Vol 25 (7) ◽  
pp. 411-420
Author(s):  
Yoshiaki Kito ◽  
Masakazu Hori ◽  
Yosuke Hayashida ◽  
Tomonari Suzuki ◽  
Hiroki Komiyama ◽  
...  
Keyword(s):  
Flexible Substrate ◽  
Direct Imaging ◽  
Roll To Roll

scholarly journals Direct Imaging Exposure Equipment with High Overlay Accuracy for Flexible Substrate in Roll-to-Roll Method

2017 ◽  
Vol 71 (10) ◽  
pp. J230-J235
Author(s):  
Yoshiaki Kito ◽  
Masakazu Hori ◽  
Yosuke Hayashida ◽  
Tomonari Suzuki ◽  
Hiroki Komiyama ◽  
...  
Keyword(s):  
Flexible Substrate ◽  
Direct Imaging ◽  
Roll To Roll

scholarly journals Fabrication and Characterization of Roll-to-Roll Printed Air-Gap Touch Sensors

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 245 ◽  
Author(s):  
Sang Lee ◽  
Sangyoon Lee
Keyword(s):  
Printed Electronics ◽  
Sacrificial Layer ◽  
Flexible Substrate ◽  
Air Gap ◽  
Touch Sensor ◽  
Roll To Roll ◽  
Slot Die ◽  
Gap Sensors ◽  
Structural Layer

Although printed electronics technology has been recently employed in the production of various devices, its use for the fabrication of electronic devices with air-gap structures remains challenging. This paper presents a productive roll-to-roll printed electronics method for the fabrication of capacitive touch sensors with air-gap structures. Each layer of the sensor was fabricated by printing or coating. The bottom electrode, and the dielectric and sacrificial layers were roll-to-roll slot-die coated on a flexible substrate. The top electrode was formed by roll-to-roll gravure printing, while the structural layer was formed by spin-coating. In particular, the sacrificial layer was coated with polyvinyl alcohol (PVA) and removed in water to form an air-gap. The successful formation of the air-gap was verified by field emission scanning electron microscopy (FE-SEM). Electrical characteristics of the air-gap touch sensor samples were analyzed in terms of sensitivity, hysteresis, and repeatability. Experimental results showed that the proposed method can be suitable for the fabrication of air-gap sensors by using the roll-to-roll printed electronics technology.

Multivariable passive RFID vapor sensors: roll-to-roll fabrication on a flexible substrate

The Analyst ◽  
2012 ◽  
Vol 137 (12) ◽  
pp. 2777 ◽  
Author(s):  
Radislav A. Potyrailo ◽  
Andrew Burns ◽  
Cheryl Surman ◽  
D. J. Lee ◽  
Edward McGinniss
Keyword(s):  
Flexible Substrate ◽  
Roll To Roll ◽  
Vapor Sensors ◽  
Passive Rfid

Hybrid Inorganic/Organic Self-Assembled Clays Nanocomposites for Roll to Roll Fabrication in Photovoltaics

2009 ◽  
Vol 1196 ◽  
Author(s):  
Peter Njagwa Kariuki ◽  
Jessica Gendron ◽  
Christopher Matthew Madl ◽  
Jasper Chiguma ◽  
Michael E Hagerman ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Indium Tin Oxide ◽  
Self Assembly ◽  
Titanium Dioxide Nanoparticles ◽  
Low Cost ◽  
Flexible Substrate ◽  
Roll To Roll ◽  
Organic Photovoltaic Materials ◽  
Self Assembled ◽  
Electrically Conducting Polymers

AbstractWe have been developing a new approach to layered hybrid (inorganic/organic) photovoltaic materials for fabrication by Roll-to-Roll (R2R) manufacturing. In this report, we combine the low cost and processability of organic electrically conducting polymers with the efficiency of dye sensitized titanium dioxide, semi-conductor quantum dots (CdSe) self-assembled on layered clay materials (Laponite) onto indium tin oxide coated flexible substrate polyethylene terephthalate (PET) substrates. We have shown electron transfer, guest-guest and host-guest interactions, charge separation, spectral line broadening, and quenching of fluorescence signals which indicate electronic coupling of the dye [Ru(bpy)3]2+ on a CdSe nanocrystal and titanium dioxide nanoparticles. Scanning electron microscopy and atomic force microscopy demonstrate successful nanoparticle formation and thin film self-assembly, as well as surface morphology and polymer thickness.

Visually tolerable tiling (VTT) for making a large-area flexible patterned surface

2015 ◽  
Vol 2 (1) ◽  
pp. 86-90 ◽  
Author(s):  
Moon Kyu Kwak ◽  
Jong G. Ok ◽  
Sung Ho Lee ◽  
L. Jay Guo
Keyword(s):  
Flexible Substrate ◽  
Large Area ◽  
Patterned Surface ◽  
Roll To Roll

Large-area micro/nano-patterns on a flexible substrate were produced using the VTT (visually tolerable tiling) method, realizing invisible seam lines between small master tiles. This could be applied in the roll-to-roll imprinting process, producing large-area polarizers and microprism sheets without visible seam lines.

Precision Gravure Printing of Conductive Ink on Flexible Substrate for Printed Electronics

2012 ◽  
Author(s):  
Deokkyun Yoon ◽  
Seung-Hyun Lee
Keyword(s):  
Printed Circuit Board ◽  
Printed Electronics ◽  
Flexible Substrate ◽  
Circuit Board ◽  
Rfid Tags ◽  
Gravure Printing ◽  
Printed Circuit ◽  
Roll To Roll ◽  
Conductive Line ◽  
Grid Mesh

In attempt to lower the production cost, roll-to-roll printing is gaining attention in electronics industries. Gravure printing, which has been the method of choice in the graphics industry for years thanks to its high resolution and process speed, is utilized to print conductive lines on flexible substrate. The main benefactors of such utilization are touch screen panel, RFID tags, thin film photovoltaics, and printed circuit board industries. The preferred substrate for conductive line printing is polymer. Due to its highly flexible nature, the printed electronics is highly flexible and is expected to create new markets where the rigid silicon and glass based electronics could not. In this work, the effect of gravure cell and trench on printing thin conductive lines as low as 20 μm line width on the polyethylene terephthalate (PET) substrate is presented. Various printing orientations including the machine direction, the cross direction, and the 45° grid mesh are used and the respective orientation’s printability is discussed.

Roll-to-roll printed resistive WORM memory on a flexible substrate

2012 ◽  
Vol 23 (30) ◽  
pp. 305204 ◽  
Author(s):  
Jaakko Leppäniemi ◽  
Tomi Mattila ◽  
Terho Kololuoma ◽  
Mika Suhonen ◽  
Ari Alastalo
Keyword(s):  
Flexible Substrate ◽  
Roll To Roll
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