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    Voltage discharge optimization
    41.
    发明授权
    Voltage discharge optimization 有权
    电压放电优化

    公开(公告)号：US08803593B2

    公开(公告)日：2014-08-12

    申请号：US13632078

    申请日：2012-09-30

    Applicant: Apple Inc.

    Inventor： Ahmad Al-Dahle ,  Yafei Bi ,  Mir B. Ghaderi ,  Wei H. Yao

    IPC: G05F1/10

    CPC classification number: G05F1/613

    Abstract: One embodiment of an apparatus to control and sense a voltage through a single node can include a comparator to monitor single node voltage, a transistor to discharge voltage through the single node and control logic. The control logic can have at least two operational phases when actively controlling the voltage through the single node. In a first phase, the control logic can configure the comparator to determine if the single node voltage is greater than a reference voltage. In a second phase, the control logic can configure the transistor to discharge voltage through the single node when the comparator has previously indicated that the single node voltage is greater than a reference voltage. The control logic can alternatively execute first and second phases to discharge the voltage to a predetermined level.

    Abstract translation: 用于控制和感测通过单个节点的电压的装置的一个实施例可包括监视单节点电压的比较器，通过单个节点放电电压的晶体管和控制逻辑。 当通过单个节点主动控制电压时，控制逻辑可以具有至少两个操作阶段。 在第一阶段中，控制逻辑可以配置比较器以确定单个节点电压是否大于参考电压。 在第二阶段中，当比较器先前已经指示单个节点电压大于参考电压时，控制逻辑可以配置晶体管以通过单个节点放电电压。 控制逻辑可替代地执行第一和第二阶段以将电压放电至预定水平。

    SYSTEMS AND METHODS FOR MONITORING LCD DISPLAY PANEL RESISTANCE
    42.
    发明申请
    SYSTEMS AND METHODS FOR MONITORING LCD DISPLAY PANEL RESISTANCE 有权
    监控液晶显示面板电阻的系统和方法

    公开(公告)号：US20140062940A1

    公开(公告)日：2014-03-06

    申请号：US13679793

    申请日：2012-11-16

    Applicant: APPLE INC.

    Inventor： Ahmad Al-Dahle ,  Yafei Bi ,  Mir B. Ghaderi

    IPC: G06F3/044 ,  G09G3/36

    CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416 ,  G09G3/36

    Abstract: Systems and methods for monitoring internal resistance of a display may include supplying the display via a capacitor with a first voltage and a second voltage configured to enable the display to receive touch inputs and display image data, respectively. The method may discharge the capacitor at least three times via a first resistor, a second resistor, and the first resistor and second resistor coupled in parallel with each other. The method may monitor three discharge waveforms that corresponds to when the capacitor discharges from the first voltage to the second voltage via the first resistor, the second resistor, and the first resistor and second resistor coupled in parallel with each other. Based at least in part on the discharge waveforms, the method may determine a chip on glass resistance value and a flex on glass resistance value that correspond to an internal resistance of the display.

    Abstract translation: 用于监视显示器的内部电阻的系统和方法可以包括经由电容器向显示器提供第一电压和第二电压，第二电压被配置为使得显示器能够分别接收触摸输入和显示图像数据。 该方法可以经由第一电阻器，第二电阻器以及彼此并联耦合的第一电阻器和第二电阻器至少三次放电电容器。 该方法可以监视对应于电容器通过第一电阻器，第二电阻器以及第一电阻器和第二电阻器彼此并联耦合而从第一电压放电到第二电压的三个放电波形。 至少部分地基于放电波形，该方法可以确定对应于显示器的内部电阻的玻璃电阻值的芯片和玻璃电阻值的弯曲。

    DEVICES AND METHODS FOR COMMON ELECTRODE MURA PREVENTION
    43.
    发明申请
    DEVICES AND METHODS FOR COMMON ELECTRODE MURA PREVENTION 有权
    用于常见电极防护的设备和方法

    公开(公告)号：US20130328847A1

    公开(公告)日：2013-12-12

    申请号：US13654242

    申请日：2012-10-17

    Applicant: APPLE INC.

    Inventor： Ahmad Al-Dahle ,  Hopil Bae ,  Sang Y. Youn ,  Yafei Bi ,  Wei H. Yao ,  David A. Stronks

    IPC: G09G5/00

    CPC classification number: G09G5/003 ,  G09G3/2092 ,  G09G2330/027 ,  G09G2330/06

    Abstract: Methods and devices employing mura prevention circuitry, are provided. In one example, a method may include supplying a first voltage pathway between a common electrode driver and a common electrode of an electronic display device and supplying a second voltage pathway between the common electrode driver and ground. Mura prevention circuitry may be supplied that activates the first voltage pathway when the electronic display device is turned on and an activation gate signal is provided from a gate corresponding to the common electrode driver. Further, the mura prevention circuitry may activate the second voltage pathway when the electronic display device is turned off or no activation gate signal is provided from the gate corresponding to the common electrode driver.

    Abstract translation: 提供了采用mura预防电路的方法和装置。 在一个示例中，方法可以包括在公共电极驱动器和电子显示装置的公共电极之间提供第一电压路径，并且在公共电极驱动器和地之间提供第二电压路径。 可以提供Mura防止电路，其在电子显示装置接通时激活第一电压通路，并且从对应于公共电极驱动器的门提供激活门信号。 此外，当电子显示装置关闭或从对应于公共电极驱动器的门提供激活栅极信号时，防护电路可以激活第二电压路径。

    Display With Localized Brightness Adjustment Capabilities
    44.
    发明公开
    Display With Localized Brightness Adjustment Capabilities 审中-公开

    公开(公告)号：US20240054973A1

    公开(公告)日：2024-02-15

    申请号：US18493576

    申请日：2023-10-24

    Applicant: Apple Inc.

    Inventor： Koorosh Aflatooni ,  Minhyuk Choi ,  Mohammad Ali Jangda ,  Sang Y. Youn ,  Yafei Bi ,  Jean-Pierre Guillou ,  Wei H. Yao

    IPC: G09G5/10 ,  G06V40/13

    CPC classification number: G09G5/10 ,  G06V40/1318 ,  G06V40/13 ,  G09G2320/0626 ,  G09G2360/148 ,  G09G2360/144

    Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.

    Display With Localized Brightness Adjustment Capabilities
    46.
    发明公开
    Display With Localized Brightness Adjustment Capabilities 审中-公开

    公开(公告)号：US20230169936A1

    公开(公告)日：2023-06-01

    申请号：US18160495

    申请日：2023-01-27

    Applicant: Apple Inc.

    Inventor： Koorosh Aflatooni ,  Minhyuk Choi ,  Mohammad Ali Jangda ,  Sang Y. Youn ,  Yafei Bi ,  Jean-Pierre Guillou ,  Wei H. Yao

    IPC: G09G5/10 ,  G06V40/13

    CPC classification number: G09G5/10 ,  G06V40/1318 ,  G06V40/13 ,  G09G2320/0626 ,  G09G2360/148 ,  G09G2360/144

    Abstract: An electronic device may have a display with an array of pixels. The device may have an array of components such as an array of light sensors for capturing fingerprints of a user through an array of corresponding transparent windows in the display. A capacitive touch sensor, proximity sensor, force sensor, or other sensor may be used by control circuitry in the device to monitor for the presence of a user's finger over the array of light sensors. In response, the control circuitry can direct the display to illuminate a subset of the pixels, thereby illuminating the user's finger and causing reflected light from the finger to illuminate the array of light sensors for a fingerprint capture operation. The display may have display driver circuitry that facilitates the momentary illumination of the subset of pixels with uniform flash data while image data is displayed in other portions of the display.

    Low-flicker variable refresh rate display
    47.
    发明授权
    Low-flicker variable refresh rate display 有权

    公开(公告)号：US11468809B2

    公开(公告)日：2022-10-11

    申请号：US14591354

    申请日：2015-01-07

    Applicant: Apple Inc.

    Inventor： Hyunwoo Nho ,  Wei Chen ,  Wei H Yao ,  Yafei Bi

    IPC: G09G3/20

    Abstract: An electronic device may have a variable refresh rate display. Static content may be displayed on the display at a lower refresh rate than moving content to conserve power. The display may include an array of pixels. Display driver circuitry in the display may load image data into rows of the pixels. The display driver circuitry may have digital-to-analog converter circuitry that supplies data signals to the array. The display driver circuitry may respond to a variable refresh rate control signal that is asserted and deasserted depending on whether static or moving image content is to be displayed. The display driver circuitry may use the digital-to-analog converter circuitry to apply a time-varying scaling factor to the image data. The magnitude of the scaling factor may be adjusted during transitions between refresh rates to help suppress luminance variations that might otherwise result in flickering on the display.

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