A capacitive touch controller robust to display noise for ultrathin touch screen displays

Author

Kim, Ki-Duk ; Byun, San-Ho ; Choi, Yoon-Kyung ; Baek, Jong-Hak ; Cho, Hwa-Hyun ; Park, Jong-Kang ; Ahn, Hae-Yong ; Lee, Chang-Ju ; Cho, Min-Soo ; Lee, Joo-Hyeon ; Kim, Sang-Woo ; Kwon, Hyung-Dal ; Choi, Yong-Yeob ; Na, Hosuk ; Park, Junchul ; Shin, Yeon-J

Author_Institution

Samsung Electron., Yongin, South Korea

fYear

2012

Firstpage

116

Lastpage

117

Abstract

Capacitive touch screens have become widely adopted in mobile applications. Capacitive touch-screen display modules have conventionally been assembled by bonding two separate modules: 1) a touch-screen module with touch panel glass or film attached to the cover window, and 2) a display module, with a small air gap between them. An important role of the air gap is to decrease capacitive coupling of display noise to the sensors, and it is very effective since permittivity of air is more than 4χ lower than that of glass.

Keywords

air gaps; capacitive sensors; touch sensitive screens; air gap; capacitive coupling; capacitive touch controller; display module; display noise; touch panel glass; ultrathin touch screen displays; Capacitance; Capacitive sensors; Couplings; Electrodes; Glass; Noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2012 IEEE International

Conference_Location

San Francisco, CA

ISSN

0193-6530

Print_ISBN

978-1-4673-0376-7

Type

conf

DOI

10.1109/ISSCC.2012.6176943

Filename

6176943