Invention Grant
- Patent Title: Electrostatic discharge robust design for input device
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Application No.: US17031570Application Date: 2020-09-24
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Publication No.: US11997777B2Publication Date: 2024-05-28
- Inventor: Daniel Jacob Benjamin Bechstein , MohammadAli Khorrami , Vipin Ayanoor-Vitikkate , Blake R. Marshall , Zhibin Wang , Ying Cao , Robert Ubo Liu , John Stephen Smith
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kubota & Basol LLP
- Main IPC: H05F3/00
- IPC: H05F3/00 ; G06F3/0354 ; G06F3/044

Abstract:
An electrostatic discharge (ESD) robust design for an input device such as a stylus is disclosed. The input device can include one or more components, such as one or more Schottky diodes, that can be damaged by ESD events. To reduce the likelihood of damage to sensitive components, the parasitic capacitance between sensitive conductive paths and reference ground paths of the input device that could otherwise provide electrostatic discharge paths can be reduced (arranging current limiting resistance at specific locations among sensitive components, creating physical separation between sensitive conductive paths and reference ground paths), shielding can be added to shield the sensitive electronics from ESD pulses, and high dielectric breakdown material can be added to prevent ESD pulse entry or exit of not otherwise protected circuit parts.
Public/Granted literature
- US20220095443A1 ELECTROSTATIC DISCHARGE ROBUST DESIGN FOR INPUT DEVICE Public/Granted day:2022-03-24
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