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公开(公告)号：US12197665B2
公开(公告)日：2025-01-14
申请号：US17933820
申请日：2022-09-20
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Bin Huang , Stanley B. Wang
Abstract: An electronic device can include integrated micro circuitry configurable for optical sensing and touch and/or proximity sensing. An integrated touch screen can include light emitting diodes or organic light emitting diodes and chiplets. In some examples, the LEDs/OLEDs and chiplets can be disposed in a visible area of the integrated touch screen. In some examples, some or all of the chiplets can be disposed outside of the visible area of the integrated touch screen. In some examples, the chiplets can include display driving circuitry and touch sensing circuitry, and can optionally perform optical sensing using the touch sensing circuitry. In some examples, the chiplets can include separate touch chiplets configured to perform touch sensing (and/or optical sensing) and display chiplets configured to perform display functionality (and optionally provide some switching functionality).
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公开(公告)号：US11614839B2
公开(公告)日：2023-03-28
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
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.
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Patent Agency Ranking
公开(公告)号：US20240420615A1
公开(公告)日：2024-12-19
申请号：US18660166
申请日：2024-05-09
Applicant: Apple Inc.
Inventor： Hasan Akyol , Henry C. Jen , Stanley B. Wang , Baris Cagdaser , Rahul Shukla , John T. Wetherell , Bin Huang , Derek K. Shaeffer , Pablo Moreno Galbis , Johan L. Piper , Lawrence C. Tan , Adam Adjiwibawa , Manu Mishra
IPC: G09G3/20
Abstract: An electronic device may include a display panel and a display driver. The display panel may include multiple pixels each receiving a supply voltage and a respective data voltage to emit light. The display driver may include a low drop-out regulator (LDO) to provide the supply voltage to the pixels. The LDO may operate in a normal operation mode and a hard park mode. In the normal operation mode, the LDO may generate the supply voltage based on receiving a reference voltage and a bias voltage within a bias voltage range to operate in the normal operation mode. In the hard park mode, the LDO may become idle (e.g., shut-down mode) based on receiving a hard park mode voltages from dedicated replacement circuits. For example, including the dedicated reference voltage replacement circuit with the display driver may improve reliability and efficiency of the electronic device when de-energizing the LDO.
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公开(公告)号：US10860045B1
公开(公告)日：2020-12-08
申请号：US16296157
申请日：2019-03-07
Applicant: Apple Inc.
Inventor： Bin Huang
Abstract: A voltage regulator having a buffer circuit and method for operating the same is disclosed. A voltage regulator having a buffer circuit includes an input stage coupled to receive an input voltage and an output stage configured to provide an output signal on an output node. The output stage includes first and second output transistors coupled to the output node. The circuit further includes a buffer stage coupled between the input and output stages. The buffer stage includes a first buffer transistor having a gate terminal coupled to the input stage and a source terminal coupled to a gate terminal of the first output transistor. The circuit further includes a first current mirror coupled to the first buffer transistor, and a second current mirror coupled to the first current mirror, the second current mirror including the second output transistor.
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公开(公告)号：US12159007B1
公开(公告)日：2024-12-03
申请号：US17932634
申请日：2022-09-15
Applicant: Apple Inc.
Inventor： Bin Huang , Stanley B. Wang , Christoph H. Krah
Abstract: An electronic device including a touch screen (e.g., an integrated touch screen using chiplets) can be configured for low-noise reference voltage sampling and subsequent touch sensing using the sampled reference voltage. An integrated touch screen can include multiple regions, and each of the multiple regions can include multiple touch node electrodes. Chiplets can be configured to sample one or more reference voltage pins during an analog quiet time to obtain one or more sampled low-noise reference signals localized to each chiplet. The chiplets can then be configured to sense capacitance at some of or at each of the regions (e.g., using chiplets coupled to some of the touch node electrodes of each of the regions and configured to operate in a touch sensing configuration) using the one or more sampled low-noise reference signals.
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公开(公告)号：US11941211B2
公开(公告)日：2024-03-26
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
CPC classification number: G06F3/0445 , G06F3/0412 , G06F3/04164 , G06F3/04166 , 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.
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公开(公告)号：US20240012515A1
公开(公告)日：2024-01-11
申请号：US18212099
申请日：2023-06-20
Applicant: Apple Inc.
Inventor： Pablo Moreno Galbis , Xiang Lu , Bin Huang , Ling Zhang , Nikhil Acharya , Derek K. Shaeffer , Stanley B. Wang , Yongjie Jiang , Hopil Bae , Jiayi Jin , Ce Zhang , Young Don Bae , Giovanni Azzellino , Wooseung Yang , Mahdi Farrokh Baroughi , Weijun Yao , Rajesh Velayuthan , Eric A. Hildebrandt , Henry C. Jen
IPC: G06F3/041
CPC classification number: G06F3/0418 , G06F2203/04107 , G06F3/044
Abstract: Touch sensitive display technologies (e.g., integrated touch-display pixel-based systems) are evolving to contain more analog and digital circuits inside the panel itself instead of the traditionally simple thin-film transistors. This improves the display characteristics but makes those circuits more vulnerable to the impact of external ESD strikes, which can degrade the user experience. This disclosure describes a series of circuits and techniques to mitigate the impact of these discharges on front of screen artifacts and potential false touches. These circuits and techniques may include: performing configuration-only panel updates independently of the image refresh rate, improving the in-panel memory circuits to make them resistant to unexpected pin toggles via disabling of a write path in response to a read clock, implementing a pin corruption detector and implementing a supply injection detector.
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