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公开(公告)号：US20230359305A1
公开(公告)日：2023-11-09
申请号：US18312889
申请日：2023-05-05
Applicant: Apple Inc.
Inventor： Sagar R. VAZE , Yu-Heng CHENG , Prathit BUGNAIT , Isaac W. CHAN
CPC classification number: G06F3/0418 , G06F3/0412 , G06F3/0446 , G06F2203/04107 , G06F2203/04112
Abstract: Differential driving and/or sensing can reduce noise in a touch screen. In some examples, the touch electrodes and/or routing traces can be implemented using metal mesh in first and second metal layers. To mitigate electrical interference at the touch screen from a display, a display-noise shield or sensor can be provided between the display and the touch screen. In some examples, a shield can minimize a noise contribution from the display to signals generated at the touch screen. In other examples, a sensor can enable a differential read out of signals at the touch screen that subtracts a noise component measured by the sensor. Forming the shield or sensor, and the touch screen over the display using an on-cell process can improve touch screen performance and yield. The shield can be connected to a conductive ring and flex circuit via tapping points in a stackup separate from a display stackup.
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公开(公告)号：US20250021194A1
公开(公告)日：2025-01-16
申请号：US18770305
申请日：2024-07-11
Applicant: Apple Inc.
Inventor： Wenqing DAI , Isaac W. CHAN , Chun Hao TUNG , Nikhil DOLE , Vyom SHARMA , Szhsiao CHEN , Sunggu KANG
Abstract: In some examples, a touch and force sensitive device includes integrated circuitry configured to attenuate noise in a first period of operation, and sense force of an object contacting the device in a second period of operation. In some examples, a touch and force sensitive device includes integrated circuitry formed from a same material layer, the material layer configured to detect a force of an object contacting the device in first one or more regions of the material layer, and configured to couple touch detection circuitry in second one or more regions of the material layer.
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