Apple Inc.

Alexander A Penn

John Z Zhong

Steven Porter Hotelling

Sumant Ranganathan

Sunggu Kang

Chun-Hao Tung

Albert Lin

Hao Zhang

Ashray Vinayak Gogte

Ramachandran Chundru

Sudip Mondal

Wencong Zhu

Hui Zhou

Viswa B Pilla

Touch sensor configurations for reducing electrostatic discharge events in the border area of a touch sensor panel is disclosed. Touch sensors (e.g., electrodes formed on the cover material and/or the opaque mask) can be susceptible to certain events such as arcing and discharge/joule heating, which may negatively affect touch sensor performance. Examples of the disclosure can include increasing the trace width, spacing, and/or thickness in the border area relative to the trace width, spacing, and/or thickness in the visible/active area along one or more sides of the touch sensor panel. In some examples, touch electrodes can be located exclusively in the visible/active areas along one or more sides of the touch sensor panel, while dummy sections can be included in both the border and visible/active areas. Additionally or alternatively, one or more gaps between adjacent touch electrodes in the border area or serpentine routing can be included.

Back of cover touch sensors

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Cupertino, CA, United States of America

Alexander A Penn