公开(公告)号：US20230229275A1

公开(公告)日：2023-07-20

申请号：US18185968

申请日：2023-03-17

Applicant: Apple Inc.

Inventor： William Matthew Pender PAUL ,  Christoph H. KRAH ,  Bin HUANG ,  Stanley Bo-Ting WANG

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166 ,  G06F3/0412 ,  G06F3/0446

Abstract: In some examples, a touch screen can include touch electrodes that can function as drive (Tx) electrodes and sense (Rx) electrodes during a touch sensing operation of the electronic device. The drive electrodes can include +Tx electrodes and -Tx electrodes that can receive drive signals that can have the same amplitude and frequency and opposite phases, for example. In some examples, the surface areas of the +Tx electrodes and the -Tx electrodes can be the same and the distances of the +Tx electrodes and -Tx electrodes from the Rx electrodes can be different. In some examples, the total charge coupled to a proximate or touching object can be zero, which can mitigate problems associated with ungrounded or poorly grounded objects in contact with the touch screen.

公开(公告)号：US20220057897A1

公开(公告)日：2022-02-24

申请号：US16998456

申请日：2020-08-20

Applicant: Apple Inc.

Inventor： William Matthew Pender PAUL ,  Christoph H. KRAH ,  Bin HUANG ,  Stanley Bo-Ting WANG

IPC: G06F3/044 ,  G06F3/041

Abstract: In some examples, a touch screen can include touch electrodes that can function as drive (Tx) electrodes and sense (Rx) electrodes during a touch sensing operation of the electronic device. The drive electrodes can include +Tx electrodes and −Tx electrodes that can receive drive signals that can have the same amplitude and frequency and opposite phases, for example. In some examples, the surface areas of the +Tx electrodes and the −Tx electrodes can be the same and the distances of the +Tx electrodes and −Tx electrodes from the Rx electrodes can be different. In some examples, the total charge coupled to a proximate or touching object can be zero, which can mitigate problems associated with ungrounded or poorly grounded objects in contact with the touch screen.