A highly area-efficient controller for capacitive touch screen panel systems

Hwang, Tong-Hun; Cui, Wen-Hai; Yang, Ik-Seok; Kwon, Oh‐Kyong

doi:10.1109/tce.2010.5506047

Cited by 89 publications

(39 citation statements)

References 8 publications

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“…21 The other is the capacitive type, which senses the capacitance change associated with the disturbance of fringe electric fields due to the finger touch. 22 The capacitive TSP has some benefits over its resistive counterpart in terms of high resolution, multi-touch capability, and durability, although its fabrication processes are more costly and the scaling to a large size is more challenging. The capacitive TSP has another advantage in the sense that its functionality can be easily extended to detect several different signals simultaneously by adopting flexible and stretchable materials and designing proper device structures.…”

Section: Research At Unist Display Centermentioning

confidence: 99%

Research on flexible display at Ulsan National Institute of Science and Technology

et al. 2017

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Displays represent information visually, so they have become the fundamental building block to visualize the data of current electronics including smartphones. Recently, electronics have been advanced toward flexible and wearable electronics that can be bent, folded, or stretched while maintaining their performance under various deformations. Here, recent advances in research to demonstrate flexible and wearable displays are reviewed. We introduce these results by dividing them into several categories according to the components of the display: active-matrix backplane, touch screen panel, light sources, integrated circuit for fingerprint touch screen panel, and characterization tests; and we also present mechanical tests in nano-meter scale and visual ergonomics research.

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Section: Research At Unist Display Centermentioning

confidence: 99%

Research on flexible display at Ulsan National Institute of Science and Technology

et al. 2017

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“…6, we compare two coordinates evaluation methods, one based on curve fitting [14] and one based on the weighting average method in (9). The computed coordinates are compared with the actual touch point (11,11) and the error distance d = (x − 11) 2 + (y − 11) 2 is calculated.…”

Section: E S T I M a T E T H E M A G N I T U D E S O F A L L S E N S mentioning

confidence: 99%

“…In [8], the authors propose a method to distinguish fingers on the touch panel for a specific application purpose. Although the works presented in [9], [10] consider the robust design to reduce the noise influence, the design is based on the analog circuits.…”

Section: Introductionmentioning

confidence: 99%

Multi-touch points detection for capacitive touch panel

Chang

Chung

2013

2013 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference

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Abstract-We consider the detection of multiple touch points for capacitive touch panel systems under Gaussian noise. We propose an algorithm that reduces the noise-induced detection error and improves the detection accuracy with partial touch signal information. The proposed algorithm is based on the likelihood ratio test, and utilizes the touch signal features, such as the local maximum, the range of touch magnitude, and the consecutive occurrence of touch locations, to first detect touch points and then calculates the real touch coordinates based on the weighting average technique. Simulation demonstrates the improved performance of the proposed algorithm.

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“…Numerous consumer electronic systems, e.g. mobile phones, tablets, and computers, utilize capacitive sensing techniques for touch-sensitive human interfacing [3], [4], and research continues towards extending capacitive sensing utility for gesture sensing technology [5], [6].…”

Section: Introductionmentioning

confidence: 99%

A Transmitter—Receiver System for Long-Range Capacitive Sensing Applications

Lindahl

Avestruz

Thompson

et al. 2016

IEEE Trans. Instrum. Meas.

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Abstract-Human-occupancy detection and localization are important in a variety of smart-building applications including building security, assisted-living monitors, and energy-efficient HVAC and lighting. Current implementation of such systems are limited by motion-sensor technologies, e.g. passive infrared (PIR) and ultrasonic sensors, which substitute as occupancy detectors but ultimately suffer from an inability to detect stationary objects. Capacitive sensing can detect stationary objects, but the technology has almost exclusively been developed for shortrange human detection and localization, e.g. touch-screen human interfacing of smart-devices. This paper presents a transmitterreceiver platform for research and development of capacitive sensing for long-range human-occupancy detection and localization. During testing, the system revealed a detection range of 3.5 meters, a typical room dimension in homes. Further, tests of a multi-transmitter, single-receiver system in a 3.2 m x 3.2 m space showed the system's potential for occupant-localization. Ultimately, this system represents an alternative to PIR and ultrasonic motion sensors, and has the potential to increase smart-building system implementation.

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A highly area-efficient controller for capacitive touch screen panel systems

Cited by 89 publications

References 8 publications

Research on flexible display at Ulsan National Institute of Science and Technology

Research on flexible display at Ulsan National Institute of Science and Technology

Multi-touch points detection for capacitive touch panel

A Transmitter—Receiver System for Long-Range Capacitive Sensing Applications

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