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.

公开(公告)号：US11972070B1

公开(公告)日：2024-04-30

申请号：US17933068

申请日：2022-09-16

Applicant: Apple Inc.

Inventor： William Paul ,  Christoph H. Krah ,  Stanley B. Wang ,  Yongjie Jiang

IPC: G06F3/041

CPC classification number: G06F3/0412 ,  G06F3/04164

Abstract: Mitigation techniques can be used to reduce noise generated by wireless communication circuitry (e.g., near-field communication circuitry) in an electronic device including a display, touch, and wireless communication circuitry. In some examples, a touch screen can have a backplane including a mesh of routing traces connected to an array of chiplets. In some examples, the chiplets can repeat signals to prevent the accumulation of noise induced by an NFC coil. In some examples, the ratio between vertical and horizontal resistances of routing traces can be configured to mitigate noise induced by the coil. In some examples, the routing traces of the mesh can be configured to share a common geometric centroid. In some examples, a plurality of routing traces can be routed in a twisted pair configuration. In some examples, the routing traces and chiplets can be routed to minimize traversal through regions of relatively high electromagnetic field.

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

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/32

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.

公开(公告)号：US20240054945A1

公开(公告)日：2024-02-15

申请号：US18365539

申请日：2023-08-04

Applicant: Apple Inc.

Inventor： Mahdi Farrokh Baroughi ,  Young Don Bae ,  Jeongsup Lee ,  Hari P. Paudel ,  Sunmin Jang ,  Shengzhe Jiao ,  Nikhil Acharya ,  Yaser Azizi ,  Ali RostamPisheh ,  Stanley B. Wang ,  Haitao Li

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2310/0248 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2320/0233

Abstract: An electronic display may include a first anode configured to carry a red emission signal, a second anode configured to carry a blue emission signal, a third anode configured to carry a green emission signal, and a micro-driver configured to stagger a timing of the red emission signal, the blue emission signal, and the green emission signal based on an emission clock signal to display image content on the electronic display.

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.

公开(公告)号：US20240177670A1

公开(公告)日：2024-05-30

申请号：US18430086

申请日：2024-02-01

Applicant: Apple Inc.

Inventor： Hjalmar Edzer Ayco Huitema ,  Hopil Bae ,  Kapil V. Sakariya ,  Mahdi Farrokh Baroughi ,  Stanley B. Wang ,  Tore Nauta

IPC: G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G2300/0866 ,  G09G2310/0275

Abstract: Display panel redundancy schemes and redundancy building blocks are described. In an embodiment, pixel driver chips are connected to both primary and redundant strings of LEDs within a local passive matrix, and driver terminal switches within the pixel driver chip are used to select either the primary or redundant strings of LEDs.

公开(公告)号：US20240105525A1

公开(公告)日：2024-03-28

申请号：US18358559

申请日：2023-07-25

Applicant: Apple Inc.

Inventor： Imran Hashim ,  Xiang Lu ,  Stanley B. Wang ,  Xuchun Liu ,  Mahdi Farrokh Baroughi ,  Yongjie Jiang ,  Hopil Bae ,  Hasan Akyol ,  Baris Posat ,  John T. Wetherell ,  Lei Wu

IPC: G09G3/32 ,  H01L25/075 ,  H01L33/62

CPC classification number: G09G3/32 ,  H01L25/0753 ,  H01L33/62 ,  H01L2933/0066

Abstract: Test structures and methods of testing pixel driver chip donor wafers are described. In an embodiment, a redistribution layer is formed over a pixel driver chip donor wafer and probed to determine known good dies, followed by removal of the RDL. In other embodiments, test routing is formed in the pixel driver chip using a polycide material or doped region in the semiconductor wafer.

公开(公告)号：US20240105089A1

公开(公告)日：2024-03-28

申请号：US18470290

申请日：2023-09-19

Applicant: Apple Inc.

Inventor： William Matthew Pender Paul ,  Mario Martinis ,  Jiayi Jin ,  Yongjie Jiang ,  Baris Posat ,  Mojtaba Fallahpour ,  Haitao Li ,  James G. Horiuchi ,  Giovanni Azzellino ,  Weijun Yao ,  Stanley B. Wang ,  Mahdi Farrokh Baroughi

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/08 ,  G09G2330/021

Abstract: Electronic displays and electronic devices including such electronic displays and antennas are provided for improved transmission of signals through circuitry of the electronic display. The electronic display may include multiple power supply tiles that are separated with non-conductive gaps to reduce circulation of eddy currents induced by the transmission signals. Moreover, voltage supply routing paths within the power supply tiles may be grouped to provide non-conductive gaps within the power supply tiles. Accordingly, the antenna may provide the transmission signals through the electronic display with improved efficiency based on reducing surface currents (e.g., eddy currents) on the electronic display.

公开(公告)号：US20240005848A1

公开(公告)日：2024-01-04

申请号：US18210060

申请日：2023-06-14

Applicant: Apple Inc.

Inventor： Jeongsup Lee ,  Hasan Akyol ,  Xiang Lu ,  Mahdi Farrokh Baroughi ,  Nikhil Acharya ,  Haitao Li ,  Hopil Bae ,  John T Wetherell ,  Shengzhe Jiao ,  Stanley B. Wang ,  Sunmin Jang ,  Hari P. Paudel ,  Eric A. Hildebrandt ,  Young Don Bae

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/08

Abstract: An electronic device may include an electronic display including display pixels to display an image based on compensated image data. As image data is written to a pixel in the row of pixels, capacitive coupling at a driver may lead to distortion on the driver. In particular, the capacitive coupling may cause distortion at a storage capacitor, which may lead to current droop at the pixel. The current droop may be reduced or eliminated in each pixel by performing pixel compensation. The pattern of the pixel compensation may be selected such that, over a number of subframes, an average amount of light is the same or similar to what would be emitted had pixel compensation been performed on each pixel in each subframe.

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

IPC: G06F3/041 ,  G06F3/042 ,  G06F3/044 ,  G09G3/32 ,  H01L27/15

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).