公开(公告)号：US10386962B1

公开(公告)日：2019-08-20

申请号：US15226628

申请日：2016-08-02

Applicant: Apple Inc.

Inventor： Jiayi Jin ,  Ruo-Gu Huang ,  Wei Hsin Yao ,  Weijun Yao

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch screen is disclosed. The touch screen comprises a first touch node electrode associated with a first display pixel, the first display pixel coupled to a first gate line. The touch screen also comprises a second touch node electrode associated with a second display pixel, the second display pixel coupled to a second gate line. The touch screen also comprises a voltage source coupled to a first gate line routing and a second gate line routing, wherein the first gate line is coupled to the first gate line routing, and the second gate line is coupled to the second gate line routing.

公开(公告)号：US09965108B2

公开(公告)日：2018-05-08

申请号：US14279692

申请日：2014-05-16

Applicant: Apple Inc.

Inventor： Yingxuan Li ,  Weijun Yao ,  Hyunwoo Henry Nho ,  Wei Hsin Yao

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416

Abstract: A touch controller. The touch controller can include first sense circuitry configured to be coupled to a first electrode on a touch sensor panel, the first sense circuitry configured to sense a first self-capacitance associated with the first electrode, and a first mutual capacitance associated with the first electrode. In some examples, the first sense circuitry can be configured to sense the first self-capacitance and the first mutual capacitance simultaneously. In some examples, the touch controller can further include a first mixer and a second mixer coupled to the first sense circuitry, the first mixer configured to demodulate a first output from the first sense circuitry to extract information about the first self-capacitance from the first output, the second mixer configured to demodulate the first output from the first sense circuitry to extract information about the first mutual capacitance from the first output.

公开(公告)号：US09836165B2

公开(公告)日：2017-12-05

申请号：US14280355

申请日：2014-05-16

Applicant: Apple Inc.

Inventor： Hyunwoo Henry Nho ,  Hopil Bae ,  Weijun Yao ,  Yingxuan Li ,  Ahmad Al-Dahle

IPC: G06F3/044 ,  G06F3/042 ,  G06F3/041 ,  H01L27/32 ,  G06K9/00

CPC classification number: G06F3/0421 ,  G06F3/0412 ,  G06F3/042 ,  G06F3/044 ,  G06F2203/04103 ,  G06F2203/04106 ,  G06K9/0002 ,  H01L27/322 ,  H01L27/323 ,  H01L27/326 ,  H01L27/3276 ,  H01L51/5281

Abstract: An integrated Silicon-OLED display and touch sensor panel is disclosed. The integrated Silicon-OLED display and touch sensor panel can include a Silicon substrate, an array of transistors, one or more metallization layers, one or more vias, an OLED stack, color filters, touch sensors, and additional components and circuitry. Additional components and circuitry can include an electrostatic discharge device, a light shielding, a switching matrix, one or more photodiodes, a near-infrared detector and near-infrared color filters. The integrated Silicon-OLED display and touch sensor panel can be further configured for near-field imaging, optically-assisted touch, and fingerprint detection. In some examples, a plurality of touch sensors and/or display pixels can be grouped into clusters, and the clusters can be coupled to a switching matrix for dynamic change of touch and/or display granularity.

公开(公告)号：US09817513B2

公开(公告)日：2017-11-14

申请号：US14606996

申请日：2015-01-27

Applicant: Apple Inc.

Inventor： Weijun Yao ,  Wei Hsin Yao ,  Yingxuan Li

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/0416 ,  G06F3/044

Abstract: A sense amplifier can be designed with a series variable resistance circuit to dynamically adjust an input resistance in series with the sense amplifier for stability during the different operating modes. In some examples, a switchable resistor can be switched into the input path of the sense amplifier for stability when required by increased capacitive loading of the sense electrodes, and can be switched out of the input path of the sense amplifier when unnecessary for stability. In some examples, an adjustable resistor can be coupled to and in series with the input of the sense amplifier. The resistance of the adjustable resistor can be tuned to stabilize the sense amplifier during operating modes having increased capacitive loading from the sense electrodes and can be minimized when additional input resistance is unnecessary for stability.

公开(公告)号：US09678609B2

公开(公告)日：2017-06-13

申请号：US14059411

申请日：2013-10-21

Applicant: Apple Inc.

Inventor： Weijun Yao ,  Ahmad Al-Dahle ,  Yingxuan Li ,  Wei Hsin Yao

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: Systems and processes for stimulating a touch sensor panel using orthogonal frequencies are provided. In one example process, the drive lines of the touch sensor panel can be stimulated with stimulation signals having orthogonal frequencies. The orthogonal frequencies can be separated by a frequency that is inversely proportional to an integration time of the touch sensor panel. The touch signals generated in response to the stimulation signals can be amplified, converted into digital form, demodulated using the orthogonal frequencies, and integrated over the integration time. Integrating the demodulated signals over a length of time that is inversely proportional to the frequency spacing between the orthogonal frequencies reduces or eliminates interference in the touch signals caused by the stimulation signals having different frequencies.

公开(公告)号：US12293731B2

公开(公告)日：2025-05-06

申请号：US17988721

申请日：2022-11-16

Applicant: Apple Inc.

Inventor： Shengkui Gao ,  Jie Won Ryu ,  Kingsuk Brahma ,  Marc J DeVincentis ,  Mohammad Ali Jangda ,  Paolo Sacchetto ,  Weijun Yao ,  Yafei Bi ,  Yang Xu ,  Yue Jack Chu ,  Zhe Hua

IPC: G09G3/34 ,  G09G3/20 ,  G09G3/3208 ,  G09G3/36

Abstract: This disclosure provide various techniques for tracking emission profiles on an electronic display. An emission profile may be applied to the electronic display in order to illuminate certain pixels and deactivate (e.g., turn off) certain pixels in the electronic display to facilitate refreshing (e.g., programming with new image data) the deactivated pixels. A real-time row-based average pixel level or average pixel luminance calculation architecture may track the one or more EM profiles to accurately model EM profile behavior, which may enable accurate calculation of the average pixel level or average pixel luminance of the electronic display at any one point in time. The accurate average pixel level or average pixel luminance calculations effectuated by the EM profile tracking may be used to reduce the IR drop, improve real-time peak-luminance control, and improve the performance of under-display sensors, among other advantages.

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：US11561647B2

公开(公告)日：2023-01-24

申请号：US16924047

申请日：2020-07-08

Applicant: Apple Inc.

Inventor： Yingxuan Li ,  Weijun Yao ,  Vivek Pant ,  Martin Paul Grunthaner ,  Marduke Yousefpor ,  Sumant Ranganathan

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/0354

Abstract: A touch sensor panel is disclosed. In some examples, the touch sensor panel comprises a plurality of touch node electrodes. In some examples, the touch sensor panel comprises a touch controller configured to drive and sense the plurality of touch node electrodes in a fully bootstrapped configuration to obtain a fully bootstrapped touch image, drive and sense the plurality of touch node electrodes in a second configuration, different from the fully bootstrapped configuration, to obtain a second touch image, the second touch image including an effect of water on the touch sensor panel, and determine a final touch image based on the fully bootstrapped touch image and the second touch image, the final touch image not including the effect of the water on the touch sensor panel. In some examples, the second configuration comprises a mutual capacitance configuration. In some examples, the second configuration comprises a partially bootstrapped configuration.

公开(公告)号：US10936120B2

公开(公告)日：2021-03-02

申请号：US15313549

申请日：2014-05-22

Applicant: Apple Inc.

Inventor： Weijun Yao ,  Ahmad Al-Dahle ,  Hyunwoo Nho ,  Taif A. Syed ,  Wei Hsin Yao ,  Yingxuan Li

IPC: G06F3/041 ,  G06F3/044 ,  H01L27/12

Abstract: A self-capacitance touch screen. In some examples, the touch screen comprises a plurality of display pixels, a first display pixel of the plurality of display pixels including a first touch electrode of a plurality of touch electrodes, and a gate line coupled to the first display pixel, wherein the gate line is configured such that a voltage at the gate line substantially follows a voltage at the first touch electrode. In some examples, the gate line is coupled to a resistor, the resistor being configured to decouple the gate line from ground. In some examples, the gate line is coupled to an AC voltage source.

公开(公告)号：US10755640B2

公开(公告)日：2020-08-25

申请号：US15701030

申请日：2017-09-11

Applicant: Apple Inc.

Inventor： Jiayi Jin ,  Paolo Sacchetto ,  Maofeng Yang ,  Weijun Yao

IPC: G09G3/3258 ,  G09G3/20 ,  G09G3/3233

Abstract: Electronic devices, storage medium containing instructions, and methods pertain to determining a target boosted threshold voltage level based at least in part on a target emission threshold voltage level. Using the determined target boosted threshold voltage level, a light emitting diode (LED)-controlling transistor is submitted to voltage stress to boost a threshold voltage of the transistor to the target boosted threshold voltage level during a first portion of a refresh period between first and second emission periods. During a second portion of the refresh period, the voltage stress is de-asserted to settle the threshold voltage to a target emission threshold voltage level for the second emission period. After the voltage is settled, the LED-controlling transistor is driven based at least in part on the target emission threshold voltage level.