16.1: Sub‐Micron Transparent Metal Mesh Conductor for Touch Screen Displays

Aryal, Mukti; Geddes, Joseph B.; Seitz, Oliver; Wassei, Jonathan K.; McMackin, Ian; Kobrin, Boris

doi:10.1002/j.2168-0159.2014.tb00053.x

Cited by 14 publications

(11 citation statements)

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“…Above mentioned models were proved to be in good agreement with experimental data and successfully applied by our group in previous work [113][114][115][116][117][118]. the diameter of NWs strongly improves the conductivity of TCLs, it also leads to significantly higher haze and thus limits the applications of TCLs on their base [101,152]. Therefore, we conclude that NWs with longer length and thicker diameters suit more for PV cells, while NWs with longer length and thinner diameters -for displays and TS panels.…”

Section: Synthesis Of Agnwssupporting

confidence: 79%

Novel metallic transparent conductive layers for optoelectronics

Marus¹

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for their constant support, guidance and understanding throughout my research work. Thanks to Prof Aliaksandr Smirnov for his suggestions and help before and during my PhD track. I am grateful to Jeremy for his help and time contributed to our project. It has been my pleasure to work with you all and I hope to continue our collaboration in future. I want to thank Dr Aliaksandr Hubarevich for all his help, support, and for being my friend no matter what problems we faced during our time here. I am looking forward to stay in touch and continue to work together on future projects. Thanks to Julia Gusakova for our teatimes, funny and serious talks; you and Aliaks helped me to stay animated and in good mood. I am very grateful to Nanyang Technological University for being my home for the last four years, a place to develop my personality and skills. Special. thanks to the staff of Graduate Programme Office and especially to Christina for your care, you have always had time to listen to my (many) questions and carefully explain. Many thanks to A *STAR for making it all possible. Hard to express how grateful I am to my wife, Arina, for all her help, care, support and love. I know how hard it was for you. Thanks to my parents and my brother for staying in touch and supporting me. I dedicate this thesis to my family, my wife and our son Leon.

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Section: Synthesis Of Agnwssupporting

confidence: 79%

Novel metallic transparent conductive layers for optoelectronics

Marus¹

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“…In fact, if very high resolution would be required, one may prefer to start with a prepatterned conducting circle as one could use manufacturing methods developed in the touch-screen fi eld which have already achieved submicron resolution. [ 12 ] The circuit functionality (source, drain, top gate, and interconnects) could then be printed using a low-resolution method.…”

Section: Discussionmentioning

confidence: 99%

“…For example, one could start by using a prepatterned substrate, having predefi ned arrays of conducting islands, using methods already developed in the context of touchscreens. [ 12 ] This will be followed by the deposition of the crystals and fi nally the circuit functionality of source-drain, top gate, and interconnects would be deposited using a low-resolution printing method. Figure 1 d shows schematically a side view of the SFET illustrating how the conducting circles form the continuous path between the two electrodes.…”

Section: Introductionmentioning

confidence: 99%

Single‐Crystal Statistical Field‐Effect Transistors

Kumar

Gerchikov

Shivananda

et al. 2016

Adv Elect Materials

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highly specialized ink-jet printer that can print 1 μm dots with excellent alignment; [ 10 ] however, to contact single crystals that are randomly oriented would require too complex mapping and aligning methods. This complexity, in fi nding a suitable method to use single crystals in a simple fabrication process, is probably part of the reason that there is very little synthetic effort devoted to fi nding better crystal-forming molecular structures, not to mention their implementation in devices through a printing process.Here, we propose to arrive at highperformance materials by making the crystal-forming molecules relevant through the use of a dedicated transistor architecture that is designed to accommodate the features of the crystal-forming organic materials. In ref. [ 11 ] the authors developed a method for contacting nanowires that is based on forming highly dense and aligned nanowires such that the deposition of the contacts did not need to be aligned to a single nanowire. However, aligning the nanowires was a must and to capture nanowires between source and drain electrodes it was required to maintain few microns resolution, which was achieved through photolithography. Here we report a transistor architecture where the fabrication of the source and drain contacts and the contacting of the crystals are implemented separately. This introduces another degree of freedom in the device design which can be used to easily accommodate organic crystals in an FET structure. After discussing the new transistor structure and its mode of operation we demonstrate its high performance. We fi rst demonstrate a P-type transistor having a 100 μm channel length which is based on multiple, primarily isolated and randomly oriented, single crystals having the size of ≈10 μm. We fi nd that the transistors' effective mobility is at least 50% of that found for a single crystal. We then move to showing the generality of the structure by demonstrating also N-type and varying crystallites morphologies. Results and Discussion The Statistical FETThe concept of the statistical FET (SFET) structure is shown in Figure 1 a-c, which also illustrates the specifi c implementation process adapted here. Figure 1 a shows a top view of the gate and gate dielectric onto which many crystallites were deposited at a number density such that they form a discontinuous polycrystalline layer.

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“…Considering the literature results and preliminary experiments, we targeted an ITO electrode thickness of 200 nm to obtain proper combinations of sheet resistance and transmittance 23,24 . ITO was selected as an electrode material for the sensor owing to its reasonable resistance and transmittance along with its well-established mass manufacturing technologies, although other types of transparent conductors, such as oxide-metal-oxide or metallic nanowires/nanostructures, were also considered [31][32][33][34] . The sheet resistance of the fingerprint sensor's ITO measured using the electrical test element group pattern fabricated with the sensor was in the range of 10-12 Ω/sq., as expected, sufficiently low for sensor driving and consistent with the value used for the simulations.…”

Section: Characterization and Demonstration Of Fingerprint Sensorsmentioning

confidence: 99%

On-screen fingerprint sensor with optically and electrically tailored transparent electrode patterns for use on high-resolution mobile displays

et al. 2020

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In this study, a mutual capacitive-type on-screen fingerprint sensor, which can recognize fingerprints on a display screen to provide smartphones with full-screen displays with a minimal bezel area, is fabricated. On-screen fingerprint sensors are fabricated using an indium tin oxide transparent conductor with a sheet resistance of ~10 Ω/sq. and a transmittance of ~94% (~86% with the substrate effect) in the visible wavelength range, and assembled onto a display panel. Even at this high transmittance, the electrodes can degrade the display quality when they are placed on the display. The interference between periodic display pixel arrays and sensor patterns can lead to the Moiré phenomenon. It is necessary to find an appropriate sensor pattern that minimizes the Moiré pattern, while maintaining the signal sensitivity. To search for appropriate patterns, a numerical calculation is carried out over wide ranges of pitches and rotation angles. The range is narrowed for an experimental evaluation, which is used to finally determine the sensor design. As the selected sensor pitches are too small to detect capacitance variations, three unit patterns are electrically connected to obtain a unit block generating a larger signal. By applying the selected sensor pattern and circuit driving by block, fingerprint sensing on a display is demonstrated with a prototype built on a commercial smartphone.

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16.1: Sub‐Micron Transparent Metal Mesh Conductor for Touch Screen Displays

Cited by 14 publications

References 0 publications

Novel metallic transparent conductive layers for optoelectronics

Novel metallic transparent conductive layers for optoelectronics

Single‐Crystal Statistical Field‐Effect Transistors

On-screen fingerprint sensor with optically and electrically tailored transparent electrode patterns for use on high-resolution mobile displays

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