Abstract:
This article presents multi-touch readout IC embedding finger-resistance extraction (FRE) on a capacitive touch screen panel (TSP). The proposed FRE mode is aimed to have...Show MoreMetadata
Abstract:
This article presents multi-touch readout IC embedding finger-resistance extraction (FRE) on a capacitive touch screen panel (TSP). The proposed FRE mode is aimed to have the ability to tell users apart while sensing touch input by utilizing a unique finger’s resistance due to different bio-electrical properties. The resonance-driven FRE technique and a clamped zoom-in integrator are exploited to obtain a wide dynamic range (DR). A switched-capacitor current-controlled oscillator-based 14-bit analog-to-digital converter (ADC) was also designed, which has the benefits of low noise, compact size, and high flexibility of its resolution. The prototype chip fabricated in 0.18- \mu \text{m} CMOS achieved the measured signal-to-noise ratio (SNR) of 37.5 dB and DR of 50.7 dB in touch sensing and FRE modes, respectively, in a real-6.7-in capacitive TSP. By applying support vector machine learning to the FRE data, five different user-fingers were successfully classified with 97.7% accuracy after 500 learning cycles and thus demonstrating the feasibility of reliable user-differentiation on multi-user collaborative touch interfaces.
Published in: IEEE Journal of Solid-State Circuits ( Volume: 56, Issue: 11, November 2021)
Funding Agency:
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
System LSI Business, Samsung Electronics Company, Ltd., Hwaseong, South Korea
Tae-Gyun Song received the B.S. degree (summa cum laude) in display engineering from Dankook University, Cheonan, South Korea, in 2018, and the M.S. degree in electronics and electrical engineering from Dankook University, Yongin, South Korea, in 2020.
From 2019 to 2020, he was a Visiting Researcher with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. Since 20...Show More
Tae-Gyun Song received the B.S. degree (summa cum laude) in display engineering from Dankook University, Cheonan, South Korea, in 2018, and the M.S. degree in electronics and electrical engineering from Dankook University, Yongin, South Korea, in 2020.
From 2019 to 2020, he was a Visiting Researcher with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. Since 20...View more
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
Dong-Kyu Kim received the B.S. degree in electronic engineering and the Ph.D. degree in electronics and electrical engineering from Dankook University, Yongin, South Korea, in 2016 and 2021, respectively.
Since 2021, he has been a Post-Doctoral Researcher with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. His research interests are in the field of CMOS analo...Show More
Dong-Kyu Kim received the B.S. degree in electronic engineering and the Ph.D. degree in electronics and electrical engineering from Dankook University, Yongin, South Korea, in 2016 and 2021, respectively.
Since 2021, he has been a Post-Doctoral Researcher with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. His research interests are in the field of CMOS analo...View more
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
Jeong-Hyun Cho received the B.S. degree in electronic engineering from Hanyang University, Seoul, South Korea, in 2016, and the M.S. degree in electrical engineering from the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, in 2018, where he is currently pursuing the Ph.D. degree in electrical engineering.
His research interests are in the field of CMOS analog integrated circuit design, including p...Show More
Jeong-Hyun Cho received the B.S. degree in electronic engineering from Hanyang University, Seoul, South Korea, in 2016, and the M.S. degree in electrical engineering from the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, in 2018, where he is currently pursuing the Ph.D. degree in electrical engineering.
His research interests are in the field of CMOS analog integrated circuit design, including p...View more
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
System LSI Business, Samsung Electronics Company, Ltd., Hwaseong, South Korea
Ji-Hun Lee (Member, IEEE) received the B.S., M.S., and Ph.D. degrees in electrical engineering from the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, in 2014, 2016, and 2021, respectively.
Since 2021, he has been with System LSI Business, Samsung Electronics Company, Ltd., Hwaseong, South Korea, where he is currently involved in the design of audio amplifier chips. His research interests are in ...Show More
Ji-Hun Lee (Member, IEEE) received the B.S., M.S., and Ph.D. degrees in electrical engineering from the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, in 2014, 2016, and 2021, respectively.
Since 2021, he has been with System LSI Business, Samsung Electronics Company, Ltd., Hwaseong, South Korea, where he is currently involved in the design of audio amplifier chips. His research interests are in ...View more
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
Hyun-Sik Kim (Member, IEEE) received the B.S. degree (Hons.) in electronic engineering from Hanyang University, Seoul, South Korea, in 2009, and the M.S. and Ph.D. degrees in electrical engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2011 and 2014, respectively.
In 2014, he joined Samsung Display Company Ltd., Yongin, South Korea, where he was involved in OLED displ...Show More
Hyun-Sik Kim (Member, IEEE) received the B.S. degree (Hons.) in electronic engineering from Hanyang University, Seoul, South Korea, in 2009, and the M.S. and Ph.D. degrees in electrical engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2011 and 2014, respectively.
In 2014, he joined Samsung Display Company Ltd., Yongin, South Korea, where he was involved in OLED displ...View more
Contents School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
System LSI Business, Samsung Electronics Company, Ltd., Hwaseong, South Korea
Tae-Gyun Song received the B.S. degree (summa cum laude) in display engineering from Dankook University, Cheonan, South Korea, in 2018, and the M.S. degree in electronics and electrical engineering from Dankook University, Yongin, South Korea, in 2020.
From 2019 to 2020, he was a Visiting Researcher with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. Since 2020, he has been with System LSI Business, Samsung Electronics Company, Ltd., Hwaseong, South Korea, where he is currently involved in developing chip designs for various display solutions. His research interests include display driver ICs, power management ICs, data converters, and touch-readout circuits.
Tae-Gyun Song received the B.S. degree (summa cum laude) in display engineering from Dankook University, Cheonan, South Korea, in 2018, and the M.S. degree in electronics and electrical engineering from Dankook University, Yongin, South Korea, in 2020.
From 2019 to 2020, he was a Visiting Researcher with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. Since 2020, he has been with System LSI Business, Samsung Electronics Company, Ltd., Hwaseong, South Korea, where he is currently involved in developing chip designs for various display solutions. His research interests include display driver ICs, power management ICs, data converters, and touch-readout circuits.View more
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
Dong-Kyu Kim received the B.S. degree in electronic engineering and the Ph.D. degree in electronics and electrical engineering from Dankook University, Yongin, South Korea, in 2016 and 2021, respectively.
Since 2021, he has been a Post-Doctoral Researcher with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. His research interests are in the field of CMOS analog integrated circuit design, including mixed-signal circuits, linear regulators, and imaging readout ICs.
Dong-Kyu Kim received the B.S. degree in electronic engineering and the Ph.D. degree in electronics and electrical engineering from Dankook University, Yongin, South Korea, in 2016 and 2021, respectively.
Since 2021, he has been a Post-Doctoral Researcher with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. His research interests are in the field of CMOS analog integrated circuit design, including mixed-signal circuits, linear regulators, and imaging readout ICs.View more
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
Jeong-Hyun Cho received the B.S. degree in electronic engineering from Hanyang University, Seoul, South Korea, in 2016, and the M.S. degree in electrical engineering from the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, in 2018, where he is currently pursuing the Ph.D. degree in electrical engineering.
His research interests are in the field of CMOS analog integrated circuit design, including power conversion and management chips.
Jeong-Hyun Cho received the B.S. degree in electronic engineering from Hanyang University, Seoul, South Korea, in 2016, and the M.S. degree in electrical engineering from the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, in 2018, where he is currently pursuing the Ph.D. degree in electrical engineering.
His research interests are in the field of CMOS analog integrated circuit design, including power conversion and management chips.View more
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
System LSI Business, Samsung Electronics Company, Ltd., Hwaseong, South Korea
Ji-Hun Lee (Member, IEEE) received the B.S., M.S., and Ph.D. degrees in electrical engineering from the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, in 2014, 2016, and 2021, respectively.
Since 2021, he has been with System LSI Business, Samsung Electronics Company, Ltd., Hwaseong, South Korea, where he is currently involved in the design of audio amplifier chips. His research interests are in the field of circuits and systems for power converters and audio power amplifiers.
Ji-Hun Lee (Member, IEEE) received the B.S., M.S., and Ph.D. degrees in electrical engineering from the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, in 2014, 2016, and 2021, respectively.
Since 2021, he has been with System LSI Business, Samsung Electronics Company, Ltd., Hwaseong, South Korea, where he is currently involved in the design of audio amplifier chips. His research interests are in the field of circuits and systems for power converters and audio power amplifiers.View more
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
Hyun-Sik Kim (Member, IEEE) received the B.S. degree (Hons.) in electronic engineering from Hanyang University, Seoul, South Korea, in 2009, and the M.S. and Ph.D. degrees in electrical engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2011 and 2014, respectively.
In 2014, he joined Samsung Display Company Ltd., Yongin, South Korea, where he was involved in OLED display driving circuits and systems. From 2015 to 2019, he was an Assistant Professor with the Department of Display Engineering, Dankook University, Cheonan, South Korea. Since 2019, he has been with the School of Electrical Engineering, KAIST, where he is currently an Assistant Professor. His research interests include CMOS analog integrated circuit design with an emphasis on display drivers, power management, and sensory readout chips.
Prof. Kim is currently serving on the Technical Program Committees of the IEEE Asian SSCC and the IEEE Custom Integrated Circuits Conference. He was a recipient of two gold prizes at the 18th and 19th Human-Tech Paper Awards hosted by Samsung Electronics in 2012 and 2013, respectively, the IEEE Solid-State Circuits Society (SSCS) Pre-Doctoral Achievement Award in 2014, and the IEEE SSCS Seoul Chapter Best Student JSSC Paper Award in 2014.
Hyun-Sik Kim (Member, IEEE) received the B.S. degree (Hons.) in electronic engineering from Hanyang University, Seoul, South Korea, in 2009, and the M.S. and Ph.D. degrees in electrical engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2011 and 2014, respectively.
In 2014, he joined Samsung Display Company Ltd., Yongin, South Korea, where he was involved in OLED display driving circuits and systems. From 2015 to 2019, he was an Assistant Professor with the Department of Display Engineering, Dankook University, Cheonan, South Korea. Since 2019, he has been with the School of Electrical Engineering, KAIST, where he is currently an Assistant Professor. His research interests include CMOS analog integrated circuit design with an emphasis on display drivers, power management, and sensory readout chips.
Prof. Kim is currently serving on the Technical Program Committees of the IEEE Asian SSCC and the IEEE Custom Integrated Circuits Conference. He was a recipient of two gold prizes at the 18th and 19th Human-Tech Paper Awards hosted by Samsung Electronics in 2012 and 2013, respectively, the IEEE Solid-State Circuits Society (SSCS) Pre-Doctoral Achievement Award in 2014, and the IEEE SSCS Seoul Chapter Best Student JSSC Paper Award in 2014.View more
