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A Highly Linear and Accurate Fork-Shaped Electrode Pattern for Large-Sized Capacitive Touch Screen Panels

Title
A Highly Linear and Accurate Fork-Shaped Electrode Pattern for Large-Sized Capacitive Touch Screen Panels
Author
홍성관
Keywords
Large sized touch screen panel; capacitive touch sensor; touch electrode; electrode pattern; linearity; spatial accuracy
Issue Date
2018-08
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE SENSORS JOURNAL, v. 18, no. 15, page. 6345-6351
Abstract
This paper proposes a fork-shaped electrode (FSE) pattern that has high linearity and high spatial accuracy of the extracted touch coordinates for large-sized touch screen panels (TSPs). The proposed FSE pattern has a large variation in mutual capacitance (ACM) and shows similar ACM distributions in various touch directions, thus improving the linearity and spatial accuracy of the extracted touch coordinates. The performances of the proposed FSE pattern were verified by carrying out both simulation and measurement using a 32-inch capacitive TSP with a 12 mm electrode pitch, and compared with those of the conventional Manhattan- and diamond-shaped electrode patterns. The measurement results show that the linearity and spatial accuracy of the extracted touch coordinates are improved by more than 14.40% and 9.64%, respectively, when compared with those achieved in the conventional electrode patterns.
URI
https://ieeexplore.ieee.org/document/8359238http://repository.hanyang.ac.kr/handle/20.500.11754/119799
ISSN
1530-437X; 1558-1748
DOI
10.1109/JSEN.2018.2836340
Appears in Collections:
RESEARCH INSTITUTE[S](부설연구소) > RESEARCH INSTITUTE OF INFORMATION DISPLAY(디스플레이공학연구소) > Articles
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