公开(公告)号：US20210304673A1

公开(公告)日：2021-09-30

申请号：US17191009

申请日：2021-03-03

Applicant: Apple Inc.

Inventor： Shengkui Gao ,  Haifeng Li ,  Sinan Alousi ,  Marc Joseph DeVincentis ,  Yafei Bi ,  Hung Sheng Lin ,  Yi Qiao ,  Paolo Sacchetto ,  Weijun Yao ,  Pierre-Yves Emelie ,  Maofeng Yang ,  Yue Jack Chu

IPC: G09G3/3233

Abstract: A system may include an electronic display panel having pixels, where each pixel may emit light based on a respective programming signal. The system may include a memory storing a map. The processing circuitry may determine a function for each pixel from the map. The processing circuitry may determine a respective control signal based on the function and a target brightness level for each pixel to generate multiple control signals, where the respective control signal is used to generate the respective programing signal for each pixel. The processing circuitry may determine a scaling factor based at least in part on the first map and may scale at least a subset of the multiple control signals based at least in part on the scaling factor.

公开(公告)号：US10902777B1

公开(公告)日：2021-01-26

申请号：US16505556

申请日：2019-07-08

Applicant: Apple Inc.

Inventor： Ruo-Gu Huang ,  Kyung Hoae Koo ,  Michael H. Lim ,  Chuang Qian ,  Weijun Yao ,  Yue Jack Chu

IPC: G09G3/3291 ,  G09G3/3233

Abstract: A display driver is disclosed that reduces first frame dimming and flicker in light-emitting diode pixels of a display device. The display driver may receive a display brightness value and determine a value of a dynamic supply voltage parameter based on the display brightness value. Over a first time interval, the display driver may apply a supply voltage that is based on the dynamic supply voltage parameter to one of a gate of a drive transistor of a light-emitting-diode circuit and a channel of the drive transistor. Over a second time interval, the display driver may apply a parking voltage to an anode of a light-emitting diode of the light-emitting-diode circuit and to the channel of the drive transistor. The value of the parking voltage may be below a threshold voltage of the light-emitting diode and correspond to the value of the dynamic supply voltage parameter.

公开(公告)号：US10678367B1

公开(公告)日：2020-06-09

申请号：US15261620

申请日：2016-09-09

Applicant: Apple Inc.

Inventor： Kanke Gao ,  Chung-Ming Chang ,  Jiayi Jin ,  Ruo-Gu Huang ,  Taif A. Syed ,  Wei Hsin Yao ,  Weijun Yao

IPC: G06F3/041 ,  G06F3/044 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368

Abstract: A touch sensor panel is disclosed. The touch sensor panel can include a plurality of touch nodes, the plurality of touch nodes including a first set of touch nodes and a second set of touch nodes, different from the first set of the touch nodes. In some examples, sense circuitry can be configured to, during a first scan, sense a first combined touch signal of the first set of the touch nodes, and during a second scan, sense a second combined touch signal of the second set of the touch nodes. A touch processor can be configured to determine a touch image at the plurality of touch nodes based on the first and second combined touch signals.

公开(公告)号：US10283062B2

公开(公告)日：2019-05-07

申请号：US15767637

申请日：2017-07-17

Applicant: Apple Inc.

Inventor： Jiayi Jin ,  Myung-Je Cho ,  Paolo Sacchetto ,  Weijun Yao

IPC: G09G3/36 ,  G09G3/20

Abstract: A display may have curved edges such as rounded corners. Pixels in the display may be controlled so that the active area of the display has the desired curved edge shape. In order to maximize the apparent smoothness of the curved edge, the display may include circuitry that dims some of the pixels based on their location relative to a spline for the curved edge. The display circuitry may include a multiplication circuit that receives image data as a first input and dimming factors from a gain table as a second input. The image data may include a brightness level for each pixel in the array of pixels. The multiplication circuit may multiply the brightness level for each pixel by its respective dimming factor. This modified image data may then be supplied to the imaging pixels using display driver circuitry.

公开(公告)号：US09933879B2

公开(公告)日：2018-04-03

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.

公开(公告)号：US09553578B2

公开(公告)日：2017-01-24

申请号：US14502899

申请日：2014-09-30

Applicant: APPLE INC.

Inventor： Ahmad Al-Dahle ,  Hyunwoo Nho ,  Marduke Yousefpor ,  Weijun Yao ,  Yingxuan Li

IPC: G05F1/10 ,  H03K17/687 ,  G09G3/36 ,  G09G3/20 ,  H03K17/14

CPC classification number: H03K17/6872 ,  G09G3/20 ,  G09G3/3696 ,  G09G2300/08 ,  H03K17/145 ,  H03K17/687 ,  H03K2217/0054

Abstract: Systems, methods, and devices to control a transistor to maintain one or more substantially constant characteristics while activated or deactivated are provided. One such system includes a transistor that receives an activation signal on a gate terminal to become activated during a first period and receives a deactivation signal on the gate terminal to become deactivated during a second period. The transistor receives an input signal on an input terminal during the first period and the second period. The input signal varies during the first period and during the second period. The transistor may have improved reliability (e.g., substantially constant on resistance RON) because a first difference between the input signal and the activation signal substantially does not vary during the first period and a second difference between the input signal and the deactivation signal substantially does not vary during the second period.

Abstract translation: 提供了控制晶体管以在激活或去激活时维持一个或多个基本恒定特性的系统，方法和装置。 一个这样的系统包括晶体管，其在栅极端子处接收激活信号，以在第一时段期间被激活，并且在第二周期期间接收在栅极端子上的去激活信号以使其失效。 晶体管在第一周期和第二周期期间在输入端子上接收输入信号。 输入信号在第一周期和第二周期期间变化。 晶体管可能具有改进的可靠性（例如，基本上恒定的导通电阻RON），因为输入信号和激活信号之间的第一差异在第一周期内基本上不变，而输入信号和去激活信号之间的第二差基本上不是 在第二期间有所不同。

公开(公告)号：US20160275899A1

公开(公告)日：2016-09-22

申请号：US14660355

申请日：2015-03-17

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Chaohao Wang ,  Szu-Hsien Lee ,  Weijun Yao ,  Yingxuan Li ,  Wonjae Choi

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3648 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2320/0209 ,  G09G2320/029 ,  G09G2330/06 ,  G09G2330/08

Abstract: Systems and methods are provided for adjusting and displaying image data to account for variable common voltage error across separate common electrode sub-plates. The image data may be adjusted based on a common mode common voltage error on a common voltage line coupled to more than one different common electrode sub-plate. Each common electrode sub-plate may carry a common voltage that varies depending on values of the image data programmed to pixels associated with that common electrode sub-plate.

Abstract translation: 提供了系统和方法来调整和显示图像数据，以解决跨单独的公共电极子板的可变共同电压误差。 可以基于耦合到多于一个不同公共电极子板的公共电压线上的共模公共电压误差来调整图像数据。 每个公共电极子板可以承载根据编程到与该公共电极子板相关联的像素的图像数据的值而变化的公共电压。

公开(公告)号：US20150169121A1

公开(公告)日：2015-06-18

申请号：US14256849

申请日：2014-04-18

Applicant: Apple Inc.

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

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0412 ,  G06F3/044

Abstract: Integrated touch screens are provided including drive lines formed of grouped-together circuit elements of a thin film transistor layer and sense lines formed between a color filter layer and a material layer that modifies or generates light. The common electrodes (Vcom) in the TFT layer can be grouped together during a touch sensing operation to form drive lines. Sense lines can be formed on a separate layer dedicated to only touch hardware.

Abstract translation: 提供了集成触摸屏，包括由薄膜晶体管层的组合电路元件形成的驱动线和在滤色器层和修饰或产生光的材料层之间形成的感测线。 可以在触摸感测操作期间将TFT层中的公共电极（Vcom）组合在一起以形成驱动线。 感应线可以在专用于仅触摸硬件的单独的层上形成。

公开(公告)号：US20150109213A1

公开(公告)日：2015-04-23

申请号：US14059427

申请日：2013-10-21

Applicant: Apple Inc.

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

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: Systems and processes for encoding and decoding touch signals output by a touch sensor are provided. In one example system, switching circuitry can be used to selectively couple each of the sense lines of a touch sensor to a positive terminal or a negative terminal of a sense amplifier based on the values of the elements of a matrix. The touch signals can be amplified and converted into digital form using a single sense amplifier and an ADC before being decoded using decoding circuitry. The decoding circuitry can decode the digital encoded touch signals by multiplying the digital encoded touch signals by each column of an inverse of the matrix used to encode the touch signals. The result of the decoding can be a set of signals that are representative of the touch signals output by the touch sensor.

Abstract translation: 提供了用于编码和解码由触摸传感器输出的触摸信号的系统和过程。 在一个示例系统中，切换电路可以用于基于矩阵的元素的值，将触摸传感器的每个感测线选择性地耦合到读出放大器的正端或负端。 在使用解码电路解码之前，可以使用单个读出放大器和ADC将触摸信号放大并转换为数字形式。 解码电路可以通过将数字编码的触摸信号乘以用于编码触摸信号的矩阵的逆的每列来对数字编码的触摸信号进行解码。 解码的结果可以是表示由触摸传感器输出的触摸信号的一组信号。

公开(公告)号：US20240404445A1

公开(公告)日：2024-12-05

申请号：US18328661

申请日：2023-06-02

Applicant: Apple Inc.

Inventor： Vincent Z. Young ,  Mahesh B. Chappalli ,  Maofeng Yang ,  Weijun Yao

IPC: G09G3/20 ,  G09G3/36

Abstract: An electronic device may include a display panel comprising a plurality of display pixels, an image source configured to store image data, and image processing circuitry. The image processing circuitry may receive the image data configured to be displayed by the plurality of display pixels, wherein the image data comprises gray level data for a first display pixel of the plurality of display pixels, convert the gray level data to first voltage data, and select a plurality of compensation maps based on a brightness level of the display panel. The image processing circuitry may also determine a voltage offset value based on the input voltage and the plurality of compensation maps, apply the voltage offset value to the first voltage data to generate compensated voltage data, and convert the compensated voltage data into compensated gray level data for the first display pixel.