公开(公告)号：US20180059868A1

公开(公告)日：2018-03-01

申请号：US15650770

申请日：2017-07-14

Applicant: Apple Inc.

Inventor： Kingsuk BRAHMA ,  Jie Won RYU ,  Hopil BAE ,  Yafei BI

IPC: G06F3/041 ,  G02F1/1333 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/044 ,  G09G3/2022 ,  G09G5/003 ,  G09G2340/0435 ,  G09G2370/08

Abstract: Touch induced flicker for variable refresh rate (VRR) displays can be reduced by adjusting one or more voltages. Synchronization of touch sensing operations after an immediate exit can introduce flicker issues into the VRR display. In some examples, the touched induced flicker can be reduced or eliminated by tuning the voltage on a common electrode (Vcom) to a tuning point that reduces a maximum error below a threshold, irrespective of refresh rate. In some examples, touch induced flicker can be reduced or eliminated by monitoring average Vcom, and when the change in average Vcom exceeds a threshold, Vcom can be adjusted to counteract the change in average Vcom due to the variable refresh rate and/or immediate exit. In some examples, touch induced flicker can be reduced or eliminated by applying a direct current (DC) pedestal to pixel gate lines during touch sensing scans.

公开(公告)号：US20180062508A1

公开(公告)日：2018-03-01

申请号：US15798193

申请日：2017-10-30

Applicant: Apple Inc.

Inventor： Weijun YAO ,  David A. STRONKS ,  Hopil BAE ,  Kingsuk BRAHMA ,  Wei Hsin YAO ,  Yafei BI ,  Yingxuan LI

IPC: H02M3/07 ,  H01L23/64 ,  G06F3/044 ,  G06F1/32 ,  G06F3/041

CPC classification number: H02M3/07 ,  G06F1/3262 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  H01L23/642

Abstract: A charge pump that can be configured to operate in a first mode and a second mode is disclosed. The charge pump can comprise a charging capacitor coupled to a first node and configured to transfer a first DC voltage to the first node. The charge pump can also comprise a first output node and a second output node coupled to the first node. During the first mode, the first output node can be configured to output a second DC voltage based on the first DC voltage, and the second output node can be configured to output a third DC voltage based on the first DC voltage. During the second mode, the first output node can be configured to output the second DC voltage, and the second output node can be configured to output an AC voltage, the AC voltage being offset by the third DC voltage.

公开(公告)号：US20160241139A1

公开(公告)日：2016-08-18

申请号：US15043405

申请日：2016-02-12

Applicant: Apple Inc.

Inventor： Weijun YAO ,  David A. STRONKS ,  Hopil BAE ,  Kingsuk BRAHMA ,  Wei Hsin YAO ,  Yafei BI ,  Yingxuan LI

IPC: H02M3/07 ,  G06F3/044 ,  G06F3/041

CPC classification number: H02M3/07 ,  G06F1/3262 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  H01L23/642

Abstract: A charge pump that can be configured to operate in a first mode and a second mode is disclosed. The charge pump can comprise a charging capacitor coupled to a first node and configured to transfer a first DC voltage to the first node. The charge pump can also comprise a first output node and a second output node coupled to the first node. During the first mode, the first output node can be configured to output a second DC voltage based on the first DC voltage, and the second output node can be configured to output a third DC voltage based on the first DC voltage. During the second mode, the first output node can be configured to output the second DC voltage, and the second output node can be configured to output an AC voltage, the AC voltage being offset by the third DC voltage.

Abstract translation: 公开了一种可被配置为在第一模式和第二模式下操作的电荷泵。 电荷泵可以包括耦合到第一节点并被配置为将第一DC电压传送到第一节点的充电电容器。 电荷泵还可以包括耦合到第一节点的第一输出节点和第二输出节点。 在第一模式期间，第一输出节点可以被配置为基于第一DC电压输出第二DC电压，并且第二输出节点可以被配置为基于第一DC电压输出第三DC电压。 在第二模式期间，第一输出节点可以被配置为输出第二DC电压，并且第二输出节点可以被配置为输出AC电压，AC电压被第三DC电压偏移。

公开(公告)号：US20150070622A1

公开(公告)日：2015-03-12

申请号：US14293998

申请日：2014-06-02

Applicant: Apple Inc.

Inventor： Miguel C. CHRISTOPHY ,  Silvio GRESPAN ,  Richard Hung Minh DINH ,  John O. CEIDEBURG ,  Kingsuk BRAHMA

IPC: H05F3/04 ,  G06F1/18 ,  G02F1/1333

CPC classification number: G06F1/182 ,  G02F1/133308 ,  G02F2201/50 ,  G06F1/1656 ,  H05K9/0067

Abstract: An electrostatic discharge (ESD) blocking component is set forth for a computing device. The computing device can include a housing formed of non-conducting material and an overlaying display assembly supported by the housing. The display assembly can further include a plurality of display elements such as thin film transistors (TFTs) interconnected by corresponding metallic traces. The ESD block is used to block static charges associated with an ESD event so that essentially no ESD event related static charge is accumulated on the metallic traces thereby preventing ESD related damage to the plurality of TFTs.

Abstract translation: 为计算设备阐述了静电放电（ESD）阻挡部件。 计算设备可以包括由非导电材料形成的壳体和由壳体支撑的覆盖显示组件。 显示组件还可以包括多个显示元件，例如通过相应的金属迹线互连的薄膜晶体管（TFT）。 ESD块用于阻止与ESD事件相关的静电荷，使得基本上不会在金属迹线上积累ESD事件相关的静电荷，从而防止与多个TFT相关的ESD相关的损害。

公开(公告)号：US20180061305A1

公开(公告)日：2018-03-01

申请号：US15367143

申请日：2016-12-01

Applicant: Apple Inc.

Inventor： Haifeng LI ,  Kingsuk BRAHMA ,  Yafei BI

IPC: G09G3/20 ,  G09G3/3208

CPC classification number: G09G3/2092 ,  G09G3/20 ,  G09G2300/08 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0693

Abstract: Aspects of the subject technology relate to electronic devices with displays. A display may include display control circuitry including an internal oscillator and one or more counters. The counters may be used to calibrate a display line time to a system line time to ensure that each displayed frame is synchronized with received display data frames from system circuitry for the electronic device. The counters may include a first counter that maintains a current-row count during operation of a current row of display pixels during a current display frame and a second counter that maintains a current-frame count that indicates a number of counts accumulated during the current display frame. The current-row count and the current-frame count may be referenced to the system line time during operation of each pixel row to remove any errors accumulated during operation of the previous pixel rows.

公开(公告)号：US20160370915A1

公开(公告)日：2016-12-22

申请号：US14866797

申请日：2015-09-25

Applicant: Apple Inc.

Inventor： Manu AGARWAL ,  Hopil BAE ,  Kingsuk BRAHMA

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/044 ,  G09G3/00 ,  G09G3/2022 ,  G09G3/2096 ,  G09G2330/021 ,  G09G2340/0435

Abstract: Various timing schemes can be used to synchronizing display functions with touch and/or stylus sensing functions for devices including a variable refresh rate (VRR) display. In a continuous-touch mode, for example, extended blanking can result in frame judder due to mismatch or latency between reporting of sensing data and the display. To minimize these issues, sensing operations can reset to re-synchronize with the display operation, and unreported data from sensing scans can be discarded or ignored. In some examples, a display frame can be divided into two sub-frames, and a system can be configured to perform a touch sensing scan during the first sub-frame of a display frame. At the conclusion of extended blanking, the sensing operations can reset to re-synchronize with the display. The touch sensing scan can be completed in one intra-frame pause and can begin at the start of the display frame.

Abstract translation: 可以使用各种定时方案来将显示功能与用于包括可变刷新率（VRR）显示的设备的触摸和/或触控笔感测功能同步。 在连续触摸模式中，例如，由于在传感数据的报告和显示之间的不匹配或等待时间，扩展消隐可能导致帧抖动。 为了最小化这些问题，感测操作可以重置为与显示操作重新同步，并且可以丢弃或忽略来自感测扫描的未报告数据。 在一些示例中，显示帧可以被划分为两个子帧，并且系统可以被配置为在显示帧的第一子帧期间执行触摸感测扫描。 在延长消隐的结论中，感测操作可以重置为与显示器重新同步。 触摸感测扫描可以在一个帧内暂停中完成，并且可以在显示帧的开始处开始。

公开(公告)号：US20150145802A1

公开(公告)日：2015-05-28

申请号：US14089418

申请日：2013-11-25

Applicant: Apple Inc.

Inventor： Weijun YAO ,  Kingsuk BRAHMA ,  Taif A. SYED

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/044 ,  G06F2203/04106

Abstract: A touch sensor panel configured to switch between a mutual capacitance touch sensing architecture and a self-capacitance touch sensing architecture is provided. The touch sensor panel includes circuitry that can switch the configuration of touch electrodes to act as either drive lines in a mutual capacitance configuration or as sense electrodes in a self-capacitance configuration. The touch sensor panel also includes circuitry that can switch the configuration of touch electrodes to act as either sense lines in a mutual capacitance configuration or as sense electrode in a self-capacitance configuration. By splitting a self-capacitance touch mode into a drive line self-capacitive mode and sense line self-capacitive mode, the touch sensor panel is able to reuse components thus requiring less space, weight and power.

Abstract translation: 提供了一种触摸传感器面板，其被配置为在互电容式触摸感测架构和自电容触摸感测架构之间切换。 触摸传感器面板包括可以切换触摸电极的配置以用作互电容配置中的驱动线或作为自电容配置中的感测电极的电路。 触摸传感器面板还包括可以将触摸电极的配置切换为互电容配置中的感测线或者作为自电容配置中的感测电极的电路。 通过将自电容触摸模式分为驱动线自感模式和感测线自电容模式，触摸传感器面板能够重用组件，因此需要较少的空间，重量和功率。