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Verschueren, L. (author), Ameys M., (author), Velazquez Lopez M., (author), Roose F. de, (author), Bonnifait M., (author), Smout S., (author), Ke T.H., (author), Vandenplas E., (author), Kronemeijer A.J., (author), Steudel S., (author), Genoe J., (author), Dehaene W., (author), Myny K., (author)Two different external compensation methods for high-resolution active matrix organic light-emitting diode (AMOLED) displays are presented and compared. Both compensation methods are implemented using a small pixel circuit, namely, a 3T2C and a 2T1C pixel circuit, allowing high-resolution displays. Due to the simple driving schemes, these...article 2021
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Simicic, M. (author), Ashif, N.R. (author), Hellings, G. (author), Chen, S.H. (author), Nag, M. (author), Kronemeijer, A.J. (author), Myny, K. (author), Linten, D. (author)The thin-film-transistor (TFT) technology has attracted significant attention in account of the possibility to manufacture transistors on large and flexible substrates, at low processing temperatures and at a low cost. Next to the well-established amorphous silicon TFT technology used mostly for displays, the amorphous Indium-Gallium-Zinc-Oxide ...article 2020
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Verschueren, L. (author), Ameys, M. (author), Lopez, M.V. (author), Smout, S. (author), Ke, T.H. (author), Vandenplas, E. (author), Kronemeijer, A.J. (author), Heremans, P. (author), Genoe, J. (author), Dehaene, W. (author), Myny, K. (author)This paper presents a new compensation principle using a 2T1C pixel circuit. The implementation shows significant improvement in uniformity for all grey-levels, due to compensation for both VT and β-factor variations. The resulting current variation after compensation in the characterized display area reaches values down to 0.079%.conference paper 2020
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Papadopoulos, N. (author), Celiker, H. (author), Qiu, W. (author), Ameys, M. (author), Smout, S. (author), Willegems, M. (author), Deroo, F. (author), Steen, J.-L. (author), Kronemeijer, A.J. (author), Dehouwer, M. (author), Mityashin, A. (author), Gehlhaar, R. (author), Dehaene, W. (author), Myny, K. (author)In this work, we demonstrate a capacitive coupled data transfer with flexible thin-film electronics using touchscreen as ubiquitous reader interface. The capacitive communication to the touchscreen is proven using a 64-bit metal-oxide thin-film capacitive-coupled identification tag. The tag is powered by a thin film battery or thin-film...conference paper 2020
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Papadopoulos, N. (author), Qiu, W. (author), Ameys, M. (author), Smout, S. (author), Willegems, M. (author), Deroo, F. (author), van der Steen, J.L. (author), Kronemeijer, A.J. (author), Dehouwer, M. (author), Mityashin, A. (author), Gehlhaar, R. (author), Myny, K. (author)Capacitive touchscreens are increasingly widespread, featuring in mobile phones and tablets, as well as everyday objects such as cars and home appliances. As a result, the interfaces are uniquely placed to provide a means of communication in the era of the Internet of Everything. Here, we show that commercial touchscreens can be used as reader...article 2019
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Zulqarnain, M. (author), Stanzione, S. (author), van der Steen, J.L.P.J. (author), Gelinck, G.H. (author), Myny, K. (author), Cantatore, E. (author)This work presents a low power ECG interface for wearable applications, based on unipolar a-IGZO TFTs manufactured on a flexible substrate. The interface consists of a cascaded diode-connected load preamplifier followed by a reset integrator, which is used to convert the voltage signal to a pulse-width modulated (PWM) representation. The output...conference paper 2019
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de Roose, F. (author), Genoe, J. (author), Kronemeijer, A.J. (author), Myny, K. (author), Dehaene, W. (author)Thin-film transistor (TFT) technologies have long been used predominantly for display fabrication and are attractive for large area, low cost and flexible circuit applications. Thanks to the improving performance of thin-film metal-oxide NFC tags and data processing chips on foil [1], [2], fabs are considering the large-scale production of...conference paper 2019
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- Papadopoulos, N. (author), Steudel, S. (author), Kronemeijer, A.J. (author), Ameys, M. (author), Myny, K. (author) conference paper 2019
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Papadopoulos, N. (author), Steudel, S. (author), Smout, S. (author), Willegems, M. (author), Nag, M. (author), Ameys, M. (author), Kronemeijer, A.J. (author), Heremans, P. (author), Myny, K. (author)This work describes integrated readout electronics for on-panel fingerprint detection, focusing on two key building blocks: charge sense amplifier (CSA) and analog-to-digital converter (ADC). The CSA has been realized in a dual-gate self-aligned IGZO thin-film transistor (TFT) technology with channel length downsizing to 3µm, enabling 1.3mm...conference paper 2019
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Papadopoulos, N. (author), Steudel, S. (author), de Roose, F. (author), Eigabry, D.M. (author), Kronemeijer, A.J. (author), Genoe, J. (author), Dehaene, W. (author), Myny, K. (author)In this paper a charge sense amplifier (CSA) using a 5μm In-Ga-Zn-O transistor technology on 15μm thick flexible substrate is presented for readout of a 500dpi fingerprint sensor array targeting direct integration with active matrix organic light emitting displays (AMOLED). The CSA achieves a linear input range of 0.8V for rail to rail output at...conference paper 2018
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Papadopoulos, N. (author), Steudel, S. (author), de Roose, F. (author), Eigabry, D.M. (author), Kronemeijer, A.J. (author), Genoe, J. (author), Dehaene, W. (author), Myny, K. (author)In this paper a charge sense amplifier (CSA) using a 5μm In-Ga-Zn-O transistor technology on 15μm thick flexible substrate is presented for readout of a 500dpi fingerprint sensor array targeting direct integration with active matrix organic light emitting displays (AMOLED). The CSA achieves a linear input range of 0.8V for rail to rail output at...conference paper 2018
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Papadopoulos, N.P. (author), de Roose, F. (author), van der Steen, J.-L.P.J. (author), Smits, E.C.P. (author), Ameys, M. (author), Dehaene, W. (author), Genoe, J. (author), Myny, K. (author)The maturity of metal–oxide thin-film transistors (TFT) highlights opportunities to develop robust and low-cost electronics on flexible and stretchable substrates over large area in an industry-compatible technology. Internet-ofEverything applications with sensor nodes are driving the development of analog-to-digital converters (ADCs). In this...article 2018
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Verschueren, L. (author), Ameys, M. (author), de Roose, F. (author), Steudel, S. (author), van der Steen, J.L.P.J. (author), Gelinck, G.H. (author), Kronemeijer, A.J. (author), Huang, C. (author), Tsai, C. (author), Huang, Y. (author), Yeh, M. (author), Heremans, P. (author), Myny, K. (author), Dehaene, W. (author), Genoe, J. (author)A novel external VT compensation method, using a simple driving scheme, is presented, enabling high resolution, yet uniform displays, regardless of the size. The uniformity can be maintained for initial VT nonuniformities as well as VT shifts occurring during operation, like bias stress. The characterized display area shows a significant...conference paper 2018
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Zulqarnain, M. (author), Stanzione, S. (author), van der Steen, J.L.P.J. (author), Gelinck, G.H. (author), Myny, K. (author), Abdinia, S. (author), Cantatore, E. (author)This paper presents a 52 μW heart-rate measurement interface for wearable applications, fabricated on a flexible foil with a-IGZO TFTs. The interface consists of a cascaded diode-connected load preamplifier with a gain of 22 dB in 3 kHz bandwidth. The output is provided as a binary PWM waveform, which can be sent to a reader device using...conference paper 2018
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Heremans, P. (author), Papadopoulos, N. (author), de Jamblinne De Meux, A. (author), Nag, M. (author), Steudel, S. (author), Rockele, M. (author), Gelinck, G. (author), Tripathi, A. (author), Genoe, J. (author), Myny, K. (author)We discuss in this paper the present state and future perspectives of thin-film oxide transistors for flexible electronics. The application case that we focus on is a flexible health patch containing an analog sensor interface as well as digital electronics to transmit the acquired data wirelessly to a base station. We examine the electronic...conference paper 2016
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Gelinck, G.H. (author), Kumar, A. (author), Moet, D. (author), van der Steen, J.L.P.J. (author), van Breemen, A.J.J.M. (author), Shanmugam, S. (author), Langen, A. (author), Gilot, J. (author), Groen, W.A. (author), Andriessen, H.A.J.M. (author), Simon, M. (author), Ruetten, W. (author), Douglas, A.U. (author), Raaijmakers, R. (author), Malinowski, P.E. (author), Myny, K. (author)We made and characterized an X-ray detector on a 25-ìm-thick plastic substrate that is capable of medicalgrade performance. As an indirect conversion flat panel detector, it combined a standard scintillator with an organic photodetector (OPD) layer and oxide thin-film transistor backplane. Using solution-processed organic bulk heterojunction...article 2016
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Tripathi, A.K. (author), Myny, K. (author), Hou, B. (author), Wezenberg, K. (author), Gelinck, G.H. (author)In this paper, we present the fabrication and characterization of highly flexible indium-gallium-zinc-oxide (IGZO)-based thin-film transistors (TFTs) and integrated circuits on a transparent and thin polymer substrate. Mechanical reliability tests are performed under bending conditions down to a bending radius of 2 mm. All the TFT parameters...article 2015
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Myny, K. (author), Cobb, B. (author), van der Steen, J.L. (author), Tripathi, A.K. (author), Genoe, J. (author), Gelinck, G. (author), Heremans, P. (author)Our goal is to create thin low-cost flexible NFC tags to allow everyday objects to communicate to smartphones and computers and thus participate in the Internet of Things. We employ amorphous Indium-Gallium-Zinc-Oxide (a-IGZO) thin-film transistor circuits processed at low temperatures, less than 250C, directly on thin polyester substrates....conference paper 2015
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Gelinck, G.H. (author), Cobb, B. (author), van Breemen, A.J.J.M. (author), Myny, K. (author)Ferroelectric polymers and amorphous metal oxide semiconductors have emerged as important materials for re-programmable non-volatile memories and high-performance, flexible thin-film transistors, respectively. However, realizing sophisticated transistor memory arrays has proven to be a challenge, and demonstrating reliable writing to and reading...article 2015
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Myny, K. (author), Tripathi, A.K. (author), van der Steen, J.L. (author), Cobb, B. (author)Thin-film transistor technologies have great potential to become the key technology for leafnode Internet of Things by utilizing the NFC protocol as a communication medium. The main requirements are manufacturability on flexible substrates at a low cost while maintaining good device performance characteristics, necessary to be compatible with...article 2015