A quasi-differential C-V convertor for touch screen panel controller IC

Byeonghak Jo; Soo Won Kim; Moonsuk Jeong; Youngil Kwon; Tahjun Park

doi:10.1109/TENCON.2014.7022382

A quasi-differential C-V convertor for touch screen panel controller IC

Byeonghak Jo, Soo Won Kim, Moonsuk Jeong, Youngil Kwon, Tahjun Park

* Honorary professors

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A capacitance to voltage convertor for a five-inch touch screen panel is designed. In this paper, a new quasidifferential buffer is proposed to be robust with respect to display noise and highly area efficient. The measurement results show that the signal-to-noise ratio is 29.8 dB when evaluated with a 3.7-inch add-on touch screen panel and LCD display. The proposed circuit, fabricated via TSMC 0.18 um 1P6M CMOS process technology with embedded flash memory and total chip areas, is 2.8 mm × 3.2 mm, including digital block. It consumes 17.8 mW of power from a 3.3 V supply at an 80 Hz scan rate for normal operation, and 2.6 mW at 20 Hz for idle operation.

Original language	English
Title of host publication	TENCON 2014 - 2014 IEEE Region 10 Conference
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479940752
DOIs	https://doi.org/10.1109/TENCON.2014.7022382
Publication status	Published - 2015 Jan 26
Event	2014 IEEE Region 10 Conference, TENCON 2014 - Bangkok, Thailand Duration: 2014 Oct 22 → 2014 Oct 25

Publication series

Name	IEEE Region 10 Annual International Conference, Proceedings/TENCON
Volume	2015-January
ISSN (Print)	2159-3442
ISSN (Electronic)	2159-3450

Other

Other	2014 IEEE Region 10 Conference, TENCON 2014
Country/Territory	Thailand
City	Bangkok
Period	14/10/22 → 14/10/25

Keywords

C-V converter
Capacitive sensing circuit
add-on type touch screen panel
readout circuits

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering

Access to Document

10.1109/TENCON.2014.7022382

Cite this

Jo, B., Kim, S. W., Jeong, M., Kwon, Y., & Park, T. (2015). A quasi-differential C-V convertor for touch screen panel controller IC. In TENCON 2014 - 2014 IEEE Region 10 Conference [7022382] (IEEE Region 10 Annual International Conference, Proceedings/TENCON; Vol. 2015-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/TENCON.2014.7022382

A quasi-differential C-V convertor for touch screen panel controller IC. / Jo, Byeonghak; Kim, Soo Won; Jeong, Moonsuk et al.

TENCON 2014 - 2014 IEEE Region 10 Conference. Institute of Electrical and Electronics Engineers Inc., 2015. 7022382 (IEEE Region 10 Annual International Conference, Proceedings/TENCON; Vol. 2015-January).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Jo, B, Kim, SW, Jeong, M, Kwon, Y & Park, T 2015, A quasi-differential C-V convertor for touch screen panel controller IC. in TENCON 2014 - 2014 IEEE Region 10 Conference., 7022382, IEEE Region 10 Annual International Conference, Proceedings/TENCON, vol. 2015-January, Institute of Electrical and Electronics Engineers Inc., 2014 IEEE Region 10 Conference, TENCON 2014, Bangkok, Thailand, 14/10/22. https://doi.org/10.1109/TENCON.2014.7022382

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abstract = "A capacitance to voltage convertor for a five-inch touch screen panel is designed. In this paper, a new quasidifferential buffer is proposed to be robust with respect to display noise and highly area efficient. The measurement results show that the signal-to-noise ratio is 29.8 dB when evaluated with a 3.7-inch add-on touch screen panel and LCD display. The proposed circuit, fabricated via TSMC 0.18 um 1P6M CMOS process technology with embedded flash memory and total chip areas, is 2.8 mm × 3.2 mm, including digital block. It consumes 17.8 mW of power from a 3.3 V supply at an 80 Hz scan rate for normal operation, and 2.6 mW at 20 Hz for idle operation.",

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A quasi-differential C-V convertor for touch screen panel controller IC

Abstract

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Keywords

ASJC Scopus subject areas

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