公开(公告)号：US10269278B2

公开(公告)日：2019-04-23

申请号：US15694373

申请日：2017-09-01

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Hyunwoo Nho ,  Shengkui Gao ,  Jesse A. Richmond ,  Jie Won Ryu ,  Junhua Tan ,  Kingsuk Brahma ,  Mohammad B. Vahid Far ,  Sun-Il Chang ,  Yafei Bi

IPC: G09G3/00 ,  G09G3/20 ,  G06F3/041 ,  G09G3/3225

Abstract: Electronic displays, systems, and methods that perform display panel sensing are provided. An electronic device may include processing circuitry that generates image data based at least in part on display panel sensing feedback and an electronic display. The electronic display may display the image data on pixels coupled to one of several sense lines. There may be an odd number of sense lines with common electrical characteristics. The electronic display may obtain display panel sense feedback at least in part by differentially sensing each one of the sense lines with sense lines with common electrical characteristics with another one of the sense lines the common electrical characteristics.

公开(公告)号：US10262622B2

公开(公告)日：2019-04-16

申请号：US15260580

申请日：2016-09-09

Applicant: Apple Inc.

Inventor： Yafei Bi ,  Lei He ,  Mohammad B. Vahid Far ,  Mir B. Ghaderi ,  Venu Madhav Duggineni ,  Vanessa C. Heppolette ,  Joshua P. De Cesare ,  Hyuck-Jae Lee

IPC: G09G5/00

Abstract: This application relates to systems, methods, and apparatus for transitioning a display device between operating modes using a single dedicated pin of a circuit connected to the display device. The dedicated pin can receive a packet signal corresponding to an operating mode for the display device, and the circuit can thereafter cause the display device to transition into the desired operating mode in response to receiving the packet signal. The operating mode can be a low power on mode where an interface connected to the circuit is deactivated and at least some circuitry of the display device is throttled or powered off. The display device can be driven in an all black state while in the low power on mode, thereby allowing the display device to more quickly transition out of the low power on mode compared to when the display device is completely off.

公开(公告)号：US20180082638A1

公开(公告)日：2018-03-22

申请号：US15697172

申请日：2017-09-06

Applicant: Apple Inc.

Inventor： Derek K. Shaeffer ,  Jesse A. Richmond ,  Kenichi Ueno ,  Kingsuk Brahma ,  Mohammad B. Vahid Far ,  Shingo Hatanaka ,  Yafei Bi

IPC: G09G3/3258 ,  G09G3/36 ,  G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/3258 ,  G09G3/2011 ,  G09G3/3233 ,  G09G3/3275 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/0294 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2320/0276 ,  G09G2330/021 ,  G09G2330/028 ,  G09G2340/0435

Abstract: A display device may include a plurality of pixels that display image data on a display, a digital-to-analog converter that outputs a voltage that corresponds to a luminance value to be depicted on a first pixel, and a circuit that amplifies the voltage and outputs an amplified voltage to the first pixel. The circuit may include a capacitor that receives the voltage via the digital-to-analog converter and an amplifier coupled to the capacitor. The amplifier generates the amplified voltage based on the voltage stored the capacitor. The circuit also include switches that couple a first terminal of the capacitor to an output of the amplifier during a first amount of time and couples a second terminal of the capacitor to the output of the amplifier after the first amount of time expires.

公开(公告)号：US20180075798A1

公开(公告)日：2018-03-15

申请号：US15661995

申请日：2017-07-27

Applicant: Apple Inc.

Inventor： Hyunwoo Nho ,  Hung Sheng Lin ,  Jie Won Ryu ,  Junhua Tan ,  Sun-Il Chang ,  Shengkui Gao ,  Rui Zhang ,  Injae Hwang ,  Kingsuk Brahma ,  Jesse Aaron Richmond ,  Shiping Shen ,  Hyunsoo Kim ,  Sebastian Knitter ,  Lu Zhang ,  Nicolas P. Bonnier ,  Chih-Wei Yeh ,  Chaohao Wang ,  Paolo Sacchetto ,  Chin-Wei Lin ,  Mohammad B Vahid Far ,  Shinya Ono ,  Yafei Bi ,  Majid Gharghi ,  Kavinaath Murugan ,  Yun Wang ,  Derek K. Shaeffer ,  Baris Cagdaser ,  Tobias Jung ,  Marc Albrecht ,  Myung-Je Cho

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/0626

Abstract: A mobile electronic device includes a display having a pixel and processing circuitry separate from but communicatively coupled to the display. The processing circuitry prepares image data to send to the pixel and adjusts the image data to compensate for operational variations of the display based on feedback received from the display that describes a present operational behavior of the pixel. The mobile electronic device also includes additional electronic components that affect the present operational behavior of the pixel depending on present operational behavior of the additional electronic components.

公开(公告)号：US20180005578A1

公开(公告)日：2018-01-04

申请号：US15270952

申请日：2016-09-20

Applicant: Apple Inc.

Inventor： Mohammad B. Vahid Far ,  Jesse A. Richmond ,  Yafei Bi

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3258 ,  G09G3/3208 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3291 ,  G09G2300/043 ,  G09G2300/0828 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045

Abstract: An electronic device includes a display panel. The display panel includes a number of pixels, each of which includes a driving thin-film-transistor (TFT) and a light-emitting diode. Compensation circuitry external to the display panel applies offset data to pixel data for each pixel of the plurality of pixels before the pixel data is provided to the plurality of pixels.

公开(公告)号：US20180005562A1

公开(公告)日：2018-01-04

申请号：US15199315

申请日：2016-06-30

Applicant: APPLE INC.

Inventor： Hung Shen Lin ,  Jiayi Jin ,  Wei H. Yao ,  Hyunwoo Nho ,  Guangmao Xing ,  Weijun Yao ,  Xiaofeng Wang ,  Yafei Bi ,  Haifeng Li

IPC: G09G3/20 ,  G09G3/3208

CPC classification number: G09G3/2007 ,  G09G3/3208 ,  G09G3/3233 ,  G09G2310/027 ,  G09G2310/06 ,  G09G2310/066 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/0693

Abstract: Systems, methods, and devices are provided to reduce noise present in sensing circuits used for calibrating light emitting diodes (e.g., organic light emitting diodes) in electronic display devices. Such a system may include a display that renders image data using self-emissive pixels. Values on the pixels may be sensed using a current source that outputs a current and a comparator that receives the current. The comparator changes states when a voltage signal output by the capacitor crosses a first threshold voltage or a second threshold voltage. A controller receives a first time when the comparator component changes states based on the voltage signal, receives a second time when the comparator component changes states based on the voltage signal, determines a current value based on the first time and the second time, and calibrates a pixel based on the current value.

公开(公告)号：US09721502B2

公开(公告)日：2017-08-01

申请号：US14500738

申请日：2014-09-29

Applicant: Apple Inc.

Inventor： Yafei Bi ,  Wei H. Yao

IPC: G09G3/32 ,  G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/043

Abstract: A display may include an array of organic light-emitting diode display pixels having transistors characterized by threshold voltages subject to transistor variations. Compensation circuitry may be used to measure at transistor threshold voltage for a pixel. The threshold voltage may be sampled by controlling the pixel to sample the threshold voltage onto a capacitor at the pixel. The compensation circuitry may include sense circuitry that may be operated in combination with the pixel to transfer charge from the capacitor to the sense circuitry such that the threshold voltage is produced at an output of the sense circuitry. The compensation circuitry may generate compensation data based on the measured threshold voltage. During display operations, data circuitry may receive digital image data and process the digital image data along with the compensation data to generate analog data signals for the pixel.

公开(公告)号：US20170193971A1

公开(公告)日：2017-07-06

申请号：US15271085

申请日：2016-09-20

Applicant: Apple Inc.

Inventor： Yafei Bi ,  Arthur L. Spence ,  Vanessa C. Heppolette ,  Eran Tamari ,  Josh P. DeCesare

IPC: G09G5/39 ,  G09G5/00

CPC classification number: G09G5/39 ,  G09G5/001 ,  G09G5/12 ,  G09G5/18 ,  G09G5/393 ,  G09G5/395 ,  G09G2310/04 ,  G09G2340/0435 ,  G09G2360/18

Abstract: Systems and methods for synchronizing a video source and display circuitry using a dynamic tearing effect (TE) signal are provided. In one embodiment, an electronic display device includes: variable refresh rate circuitry that, when no new frame data is provided to the electronic display device, extends a vertical blanking period and reduces a refresh rate of the electronic display device. A tearing effect signal is generated, which is selectively set to a first logical level at a first period of time and a second logical level at a second period of time. The tearing effect signal is provided to the host electronic device that provides frame data to the electronic display device and upon receipt of new frame data, an un-extended vertical blanking period is returned to and the frame data at the next frame boundary is displayed.

公开(公告)号：US20170103702A1

公开(公告)日：2017-04-13

申请号：US15273444

申请日：2016-09-22

Applicant: Apple Inc.

Inventor： Yafei Bi ,  Xiaofeng Wang ,  Haifeng Li ,  Mohammad B. Vahid Far ,  Hopil Bae ,  Hung Shen Lin ,  Hyunwoo Nho ,  Wei H. Yao

IPC: G09G3/3233 ,  G09G3/3291 ,  G09G3/3266

Abstract: An electronic device includes a display panel with pixels arranged in at least one row and at least one column. The electronic device also includes a sensing channel coupled to the at least one column. The sensing channel indirectly calculates a threshold voltage of the plurality of pixels based on an application of a first current level and a second current level to a data line of a first column of the at least one column of the pixels.

公开(公告)号：US20160314760A1

公开(公告)日：2016-10-27

申请号：US14869437

申请日：2015-09-29

Applicant: Apple Inc.

Inventor： Mohammad Ali Jangda ,  Koorosh Aflatooni ,  Yafei Bi

IPC: G09G5/10 ,  G09G3/20

CPC classification number: G09G5/10 ,  G09G3/2003 ,  G09G3/3208 ,  G09G2310/027 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2320/0653 ,  G09G2320/0673 ,  G09G2330/021 ,  G09G2330/028 ,  G09G2360/144 ,  G09G2360/16

Abstract: A display may have an array of display pixels. Digital display data may be received by a digital-to-analog converter that converts the digital display data to analog display data. The magnitudes of the analog display data signals can be controlled by a regulated voltage received by the digital-to-analog converter. A brightness controller may have multiple peak luminance control (PLC) profiles. In accordance with an embodiment, a brightness setting may be processed by a lookup table to identify a pair of PLC profiles that is interpolated in order to obtain the desired regulated voltage. In accordance with another embodiment, a single PLC profile may be used that is a function of a combined parameter that takes into account both average frame luminance and the brightness setting. In accordance with yet another embodiment, a lookup table that specifies brightness setting offset values may be used to directly modulate the brightness setting.

Abstract translation: 显示器可以具有显示像素阵列。 数字显示数据可以由将数字显示数据转换为模拟显示数据的数模转换器接收。 模拟显示数据信号的幅度可以由数模转换器接收的调节电压来控制。 亮度控制器可以具有多个峰值亮度控制（PLC）简档。 根据实施例，可以通过查找表来处理亮度设置，以识别内插的一对PLC配置文件，以获得所需的调节电压。 根据另一个实施例，可以使用单个PLC简档，其是考虑平均帧亮度和亮度设置两者的组合参数的函数。 根据另一个实施例，可以使用指定亮度设置偏移值的查找表来直接调制亮度设置。