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 | IEEE Region 10 Annual International Conference, Proceedings/TENCON |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Volume | 2015-January |
| ISBN (Print) | 9781479940752 |
| DOIs | |
| Publication status | Published - 2015 Jan 26 |
| Event | 2014 IEEE Region 10 Conference, TENCON 2014 - Bangkok, Thailand Duration: 2014 Oct 22 → 2014 Oct 25 |
Other
| Other | 2014 IEEE Region 10 Conference, TENCON 2014 |
|---|---|
| Country | Thailand |
| City | Bangkok |
| Period | 14/10/22 → 14/10/25 |
Keywords
- add-on type touch screen panel
- C-V converter
- Capacitive sensing circuit
- readout circuits
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Computer Science Applications
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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 IEEE Region 10 Annual International Conference, Proceedings/TENCON (Vol. 2015-January). [7022382] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/TENCON.2014.7022382