Systems and methods for flex circuit connections in touch screens

US12204717B2 · kind B2 · utility

Assignee

• Apple Inc. · US

Inventors

• Meng-Tse Chen · Changzhi, TW
• Arnoldus Alvin Barlian · San Francisco, US
• Bayu A Thedjoisworo · Palo Alto, US
• Boris Russ · Berkeley, US
• Ziyang Zhang · Suzhou, CN
• Nathan K. Gupta · San Francisco, US

Key dates

• Filing date: Dec 9, 2020
• Grant date: Jan 21, 2025
• Expiry date: Dec 9, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K2201/10128
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A touch screen (500) can include electrodes (520, 540) (e.g., first and second touch electrodes, reference electrodes) on opposite sides (e.g., top and bottom) of a substrate (510). In some examples, vias (618, 638) can be used to couple the touch electrodes (520, 540) to conductive connections (518, 538) of flex circuits (502, 522) such that the connections (604, 624) to the flex circuits (502, 522) can be on the same side of the substrate (510) even if the touch electrodes (520, 540) are on opposite sides of the substrate (510). The conductive filling material of the via (618) can make direct contact with the conductive connections (604, 624) of the flex circuits (502, 522), for example.