公开(公告)号：US10665157B2

公开(公告)日：2020-05-26

申请号：US16374606

申请日：2019-04-03

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Shengkui Gao ,  Yingying Tang ,  Sean C. Chang ,  Mohammad B. Vahid Far ,  Kasra M. Omid-Zohoor ,  Chumin Zhao ,  Jingyu Huang ,  Mohammad Ali Jangda ,  Hyunwoo Nho ,  Chaohao Wang ,  Marc J. DeVincentis ,  Marc Albrecht ,  Warren S. Rieutort-Louis

IPC: G09G3/3208 ,  G09G3/20

Abstract: Systems and methods reduce likelihood of hysteresis that reduces perceived image quality of a subsequent image frame by toggling the display pixels to relax the display pixels by overwriting previous image frame data. During non-emission periods of the pixels, the pixels may be pre-toggled or exercised to improve response time and accuracy of the pixel. Data for pixels being programmed may also be used to pre-toggle other pixels reducing overhead but increasing cross-talk. Since the amount of cross-talk is related to content of the pixels being pre-toggled, a line buffer may be used to store image data for the pixels being pre-toggled. This stored image data may be used to determine how much pre-compensation is to be applied to data for the pixels being programmed. In other words, an amount of compensation applied is based at least in part on the content (e.g., greyscale levels) of the image data.

公开(公告)号：US10467985B2

公开(公告)日：2019-11-05

申请号：US16222492

申请日：2018-12-17

Applicant: Apple Inc.

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

IPC: G09G5/10 ,  G06K9/00

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.

公开(公告)号：US10210801B2

公开(公告)日：2019-02-19

申请号：US15012378

申请日：2016-02-01

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Mohammad Ali Jangda ,  Chin-Wei Lin ,  Hyunwoo Nho ,  Vasudha Gupta

IPC: G06F1/00 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3275 ,  G09G3/36 ,  G09G3/3225

Abstract: An electronic device includes a display and a controller. The controller is configured to receive one or more operational characteristics of the display. The controller is also configured to calculate a blank time voltage level for a data line of the display based on the one or more operational characteristics, wherein the blank time voltage level corresponds to a voltage transmitted along the data line of the display immediately subsequent to image data being transmitted along the data line.

公开(公告)号：US10089931B2

公开(公告)日：2018-10-02

申请号：US14990701

申请日：2016-01-07

Applicant: Apple Inc.

Inventor： Koorosh Aflatooni ,  Yafei Bi ,  Hung Sheng Lin ,  Mohammad Ali Jangda

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3258 ,  H03M1/72 ,  H03M1/76

Abstract: An electronic device that includes a display is provided. The display may have a brightness that is controlled using a series of cascaded digital-to-analog converter circuits. The display may be calibrated at a series of predetermined display brightness settings. For display brightness settings that fall between two consecutive display brightness settings in the series of predetermined display brightness settings, voltage interpolation operations may be performed to obtain the corresponding display brightness settings. Performing voltage interpolations instead of digital brightness setting interpolation helps minimize luminance jumps and unexpected color shifts when adjusting the brightness of the display.

公开(公告)号：US20180268762A1

公开(公告)日：2018-09-20

申请号：US15664982

申请日：2017-07-31

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Mohammad Ali Jangda ,  Injae Hwang ,  Rui Zhang ,  Shengkui Gao ,  Hyunwoo Nho ,  Wei H. Yao ,  Mohammad Hajirostam

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

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2320/064

Abstract: An electronic device includes processors that generate image data. The electronic device also includes an electronic display that displays the image data over a first frame duration by programming a first row of display pixels with the image data. The electronic display also displays the image data over the first frame duration by causing the first row of display pixels to emit light for an emission duration that is based at least in part on a first luminance of the image data. The electronic display further displays the image data over the first frame duration by resetting the first row of pixels before an end of the first frame duration.

公开(公告)号：US09613556B2

公开(公告)日：2017-04-04

申请号：US14474786

申请日：2014-09-02

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Sang Y. Youn ,  Hopil Bae ,  Mohammad Ali Jangda ,  Ahmad Al-Dahle ,  Wei H. Yao

IPC: G09G5/00 ,  G09G3/20 ,  H04B15/00 ,  H04W4/00 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/36

CPC classification number: G09G3/20 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/3648 ,  G09G3/3674 ,  G09G2310/0267 ,  G09G2330/06 ,  G09G2340/0435 ,  H04B15/00 ,  H04W4/80

Abstract: An electronic device may be provided with wireless circuitry and a display. A display driver integrated circuit in the display may have a spectrum analyzer circuit. An antenna may monitor for wireless signals. The display driver integrated circuit may use the spectrum analyzer circuit to analyze the wireless signals and determine whether there is a potential for visible display artifacts. In the presence of conditions that can lead to display artifacts, the display driver integrated circuit may adjust a gate driver control signal. Adjustments to the gate driver control signal may be made using adjustable signal dividers. The adjustments to the gate driver control signal eliminate the visible display artifacts.

公开(公告)号：US20160063907A1

公开(公告)日：2016-03-03

申请号：US14474786

申请日：2014-09-02

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Sang Y. Youn ,  Hopil Bae ,  Mohammad Ali Jangda ,  Ahmad Al-Dahle ,  Wei H. Yao

IPC: G09G3/20 ,  H04W4/00 ,  H04W24/08 ,  H04B15/00

CPC classification number: G09G3/20 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/3648 ,  G09G3/3674 ,  G09G2310/0267 ,  G09G2330/06 ,  G09G2340/0435 ,  H04B15/00 ,  H04W4/80

Abstract: An electronic device may be provided with wireless circuitry and a display. A display driver integrated circuit in the display may have a spectrum analyzer circuit. An antenna may monitor for wireless signals. The display driver integrated circuit may use the spectrum analyzer circuit to analyze the wireless signals and determine whether there is a potential for visible display artifacts. In the presence of conditions that can lead to display artifacts, the display driver integrated circuit may adjust a gate driver control signal. Adjustments to the gate driver control signal may be made using adjustable signal dividers. The adjustments to the gate driver control signal eliminate the visible display artifacts.

Abstract translation: 电子设备可以设置有无线电路和显示器。 显示器中的显示驱动器集成电路可以具有频谱分析器电路。 天线可以监控无线信号。 显示驱动器集成电路可以使用频谱分析器电路来分析无线信号并确定是否存在可见的显示伪影的可能性。 在可能导致显示伪像的条件的存在下，显示驱动器集成电路可以调整栅极驱动器控制信号。 可以使用可调信号分配器对门驱动器控制信号进行调整。 对栅极驱动器控制信号的调整消除了可见的显示伪影。

公开(公告)号：US20160063659A1

公开(公告)日：2016-03-03

申请号：US14841544

申请日：2015-08-31

Applicant: Apple Inc.

Inventor： Mohammad Ali Jangda ,  Sang Y. Youn ,  Wei H. Yao ,  Hyunwoo Nho ,  Arthur L. Spence ,  Viswa B. Pilla ,  Axel B. Schumacher ,  Ramachandran Chundru

IPC: G06T1/00 ,  G06T1/60 ,  G09G3/00

CPC classification number: G06T1/20 ,  G09G3/2092 ,  G09G5/003 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/12 ,  G09G2360/18

Abstract: An electronic device may be provided with a housing such as a metal housing in which a display is mounted. Control circuitry in the electronic device such as a system-on-chip integrated circuit may produce image data. A display driver integrated circuit may receive the image data from the system-on-chip integrated circuit and may display the image data on the display. In the absence of electrostatic discharge, the display driver integrated circuit may operate normally and may generate a heartbeat signal. When disrupted due to electrostatic discharge, the display driver circuitry may cease production of the heartbeat signal. The system-on-chip integrated circuit can implement a watchdog timer. If the watchdog timer times out because the heartbeat signal is not received within a timeout period, the system-on-chip integrated circuit may reset the display.

Abstract translation: 电子设备可以设置有诸如其中安装有显示器的金属外壳的壳体。 诸如片上系统集成电路的电子设备中的控制电路可以产生图像数据。 显示驱动器集成电路可以从片上系统集成电路接收图像数据，并且可以在显示器上显示图像数据。 在没有静电放电的情况下，显示驱动器集成电路可以正常工作并且可以产生心跳信号。 当由于静电放电而中断时，显示驱动器电路可能停止产生心跳信号。 系统级芯片集成电路可以实现看门狗定时器。 如果看门狗定时器超时，因为超时时间内没有收到心跳信号，片上系统集成电路可能会重置显示。