公开(公告)号：US20230118216A1

公开(公告)日：2023-04-20

申请号：US18068486

申请日：2022-12-19

Applicant: Apple Inc.

Inventor： John Stephen SMITH ,  Amit NAYYAR ,  Joseph Kurth REYNOLDS ,  Sagar Rajiv VAZE ,  Marduke YOUSEFPOR

IPC: G06F3/044 ,  G06F3/041

Abstract: Touch sensor panels (or touch screens) can improve signal-to-noise ratio (SNR) using touch electrode patterns for differential drive and/or differential sense techniques. In some examples, a touch sensor panel can include a two-dimensional array of touch nodes formed from a plurality of touch electrodes. Each column (or row) of touch nodes can be driven with a plurality of drive signals. For example, a first column (or row) of touch nodes can be driven by a first drive signal applied to one or more first touch nodes in the first column (or row) and a second drive signal applied to a one or more second touch nodes of the first column (or row). In some examples, the first drive signal and the second drive signal can be complimentary drive signals. In some examples, each row (or column) of touch electrodes can be sensed by differential sense circuitry.

公开(公告)号：US20210373711A1

公开(公告)日：2021-12-02

申请号：US17326249

申请日：2021-05-20

Applicant: Apple Inc.

Inventor： John Stephen SMITH ,  Amit NAYYAR ,  Joseph Kurth REYNOLDS ,  Sagar Rajiv VAZE ,  Marduke YOUSEFPOR

IPC: G06F3/044 ,  G06F3/041

Abstract: Touch sensor panels (or touch screens) can improve signal-to-noise ratio (SNR) using touch electrode patterns for differential drive and/or differential sense techniques. In some examples, a touch sensor panel can include a two-dimensional array of touch nodes formed from a plurality of touch electrodes. Each column (or row) of touch nodes can be driven with a plurality of drive signals. For example, a first column (or row) of touch nodes can be driven by a first drive signal applied to one or more first touch nodes in the first column (or row) and a second drive signal applied to a one or more second touch nodes of the first column (or row). In some examples, the first drive signal and the second drive signal can be complimentary drive signals. In some examples, each row (or column) of touch electrodes can be sensed by differential sense circuitry.