Review of capacitive touchscreen technologies: Overview, research trends, and machine learning approaches

H Nam, KH Seol, J Lee, H Cho, SW Jung - Sensors, 2021 - mdpi.com
Touchscreens have been studied and developed for a long time to provide user-friendly and
intuitive interfaces on displays. This paper describes the touchscreen technologies in four …

26.2 Virtual Rotating Gesture Recognizable Touch Readout IC for 1.26” Circular Touch Screen Panel

S Ko, J Lee, J Ham, B So, D Cho, H Kim… - … Solid-State Circuits …, 2023 - ieeexplore.ieee.org
Recently, there have been many advances in user interaction systems in mobile devices. In
addition to traditional capacitive touch systems, a stylus is becoming mainstream, which is a …

A Fully Differential Direct Sampling Touch Screen Readout With a Touch Vector Calibration for Ultrathin Organic Light-Emitting Diode Display

S Seong, S Lee, S Bae, M Lee - IEEE Transactions on Industrial …, 2023 - ieeexplore.ieee.org
This article presents a touch screen panel (TSP) readout IC (ROIC) for an ultrathin organic
light-emitting diode (OLED) display, where display noise injection is severely increased. We …

A readout IC for capacitive touch screen panels with 33.9 dB charge-overflow reduction using amplitude-modulated multi-frequency excitation

JS An, JH Ra, E Kang, MAP Pertijs… - IEEE Journal of Solid …, 2021 - ieeexplore.ieee.org
This article presents a readout integrated circuit (ROIC) for capacitive touch-screen panels
(TSPs) employing an amplitude-modulated multiple-frequency excitation (AM-MFE) …

26.3 A 45.8 dB-SNR 120fps 100pF-load self-capacitance touch-screen controller with enhanced in-band common noise immunity using noise antenna reference

S Byun, H Lee, TG Song, J Lee, J Baek… - … Solid-State Circuits …, 2023 - ieeexplore.ieee.org
In capacitive touch systems, high SNR self-capacitance sensing has been mostly used for
the following purposes:(1) to realize multi-touch on the matrix sensor, especially in full in-cell …

Sliding-windowed compensated multiplexing for nonstatic targets in tactile sensor arrays

JK Park, JT Kim - IEEE Transactions on Industrial Electronics, 2021 - ieeexplore.ieee.org
Simultaneous or concurrent multiplexing techniques with orthogonal sequences have been
used to extend the channel capacity of tactile sensor systems. Typically, dynamic sensor …

A PAPR reduction technique for fast touch sensors adopting a multiple frequency driving method on large display panels

P Kim, S Han, Y Jung, S Lee - Sensors, 2021 - mdpi.com
The multiple frequency driving method (MFDM) capacitive touch system (CTS), which drives
transmit (TX) electrodes in parallel, has been developed to improve the touch-sensitivity of …

A Three-Step Tapered Bit Period SAR ADC Using Area-Efficient Clock Generation

H Kang, S Lee, M Lee - Electronics, 2023 - mdpi.com
A three-step tapered bit period asynchronous successive approximation register (SAR)
analog-to-digital converter (ADC) is proposed to reduce the total DAC settling time by 47.7 …

Ultra-thin and flexible CMOS technology: ISFET-based microsystem for biomedical applications

A Vilouras - 2021 - theses.gla.ac.uk
A new paradigm of silicon technology is the ultra-thin chip (UTC) technology and the
emerging applications. Very thin integrated circuits (ICs) with through-silicon vias (TSVs) will …