公开(公告)号：US10089959B2

公开(公告)日：2018-10-02

申请号：US14869437

申请日：2015-09-29

申请人： Apple Inc.

发明人： Mohammad Ali Jangda ,  Koorosh Aflatooni ,  Yafei Bi

IPC分类号： G09G3/20 ,  G09G3/32 ,  H04N1/60 ,  H04N5/57 ,  G09G5/10 ,  G09G3/3208

摘要： 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.

公开(公告)号：US10002570B2

公开(公告)日：2018-06-19

申请号：US14975389

申请日：2015-12-18

申请人： Apple Inc.

发明人： Chin-Wei Lin ,  Vasudha Gupta ,  Yafei Bi

IPC分类号： G09G3/3283 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/36 ,  G09G3/3225 ,  G09G3/3275 ,  G09G3/20

CPC分类号： G09G3/3283 ,  G09G3/2048 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3291 ,  G09G3/3614 ,  G09G3/3688 ,  G09G2300/0819 ,  G09G2300/0876 ,  G09G2310/0254 ,  G09G2310/0291 ,  G09G2320/0204 ,  G09G2320/0233 ,  G09G2320/0247 ,  H03F2200/375

摘要： Systems and method for improving display quality of an electronic display. In one embodiment the electronic display includes a first display pixel that facilitates displaying a first image frame using first amplified image data and facilitates displaying a second image frame using second amplified image data; a second display pixel that facilitates displaying the first image frame using third amplified image data; a first amplifier that operates in a first operational mode to generate the first amplified image data based on image data corresponding with the first image frame and operates in a second operational mode to generate the second amplified image data based on image data corresponding with the second image frame; and a second amplifier that operates in the second operational mode to generate the third amplified image data based on the image data corresponding with the first image frame.

公开(公告)号：US20170256199A1

公开(公告)日：2017-09-07

申请号：US15272170

申请日：2016-09-21

申请人： Apple Inc.

发明人： Yafei Bi ,  Mohammad B. Vahid Far

IPC分类号： G09G3/3233 ,  G09G3/3275 ,  G09G3/3266

CPC分类号： G09G3/3233 ,  G09G3/006 ,  G09G3/20 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/02 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2330/08 ,  G09G2330/12

摘要： Provided herein are systems and methods for measurement and compensation of display panel current leakage and/or display panel noise. A pixel data signal is received at sensing and compensation circuitry. Current leakage compensation circuitry compensates for current leakage of the display panel in the data signal, while panel noise mitigation circuitry configured to reduce panel noise from the data signal. After compensating for the current leakage and reducing the panel noise, the data signal is provided to downstream circuitry for subsequent processing.

公开(公告)号：US20170103703A1

公开(公告)日：2017-04-13

申请号：US15273470

申请日：2016-09-22

申请人： Apple Inc.

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

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

CPC分类号： G09G3/3233 ,  G09G3/006 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0809 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2310/0202 ,  G09G2310/0291 ,  G09G2310/061 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2330/12

摘要： An electronic device includes one or more unit pixels and threshold voltage (Vth) sensing circuitry. The threshold voltage sensing circuitry senses Vth of the one or more unit pixels, by: sampling a charge of a capacitor of the one or more unit pixels, transitioning from the sampling, and reading out the threshold voltage based upon a change in the charge of the capacitor, such that an operation of the one or more unit pixels may be modified based upon the threshold voltage.

公开(公告)号：US20170103688A1

公开(公告)日：2017-04-13

申请号：US15273458

申请日：2016-09-22

申请人： Apple Inc.

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

IPC分类号： G09G3/00 ,  G09G3/3291 ,  G09G3/3233 ,  G09G3/3266

CPC分类号： G09G3/3233 ,  G09G3/006 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0809 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2310/0202 ,  G09G2310/0291 ,  G09G2310/061 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2330/12

摘要： An electronic device includes one or more unit pixels with a first node, a second node, and a third node. The device includes light-emitting-diode (LED) voltage (Vled) sensing circuitry, that senses Vled of the one or more unit pixels, by: sampling a charge of a capacitor of the one or more unit pixels, transitioning from the sampling, and reading out the Vled based upon a change in the charge of the capacitor, such that an operation of the unit pixel may be modified based upon the Vled.

公开(公告)号：US09524676B2

公开(公告)日：2016-12-20

申请号：US14263937

申请日：2014-04-28

申请人： Apple Inc.

发明人： Yafei Bi ,  Wei H. Yao ,  Ahmad Al-Dahle ,  Jean-Pierre S. Guillou ,  Hyunwoo Nho ,  Koorosh Aflatooni

IPC分类号： G09G3/32

CPC分类号： G09G3/3275 ,  G09G3/3233 ,  G09G2320/041 ,  G09G2320/046 ,  G09G2320/0626 ,  G09G2320/0633 ,  G09G2320/0673 ,  G09G2320/103 ,  G09G2330/021 ,  G09G2330/025 ,  G09G2330/028 ,  G09G2330/045

摘要： A display may receive image data to be displayed for a user of an electronic device. Display driver circuitry in the display may analyze the data to detect static data. The image data may contain static frames of data or static portions of a frame of data. In response to detection of static data, the display driver circuitry can take actions to avoid display damage due to burn-in effects. The display driver circuitry may reduce a peak luminance value associated with a peak luminance control algorithm, may reduce display brightness, may map image data to reduced brightness levels, or may take other actions to ensure that display pixels in the display are not damaged. Temperature information may be used in determining how to classify information as static data and in determining how significantly to reduce display pixel drive currents in response to the detection of static image data.

摘要翻译： 显示器可以接收要为电子设备的用户显示的图像数据。 显示器中的显示驱动电路可能会分析数据以检测静态数据。 图像数据可以包含数据的静态帧或数据帧的静态部分。 响应于静态数据的检测，显示驱动器电路可以采取行动以避免由于老化效应引起的显示损坏。 显示驱动器电路可以减少与峰值亮度控制算法相关联的峰值亮度值，可以减少显示亮度，可以将图像数据映射到降低的亮度级别，或者可以采取其他动作来确保显示器中的显示像素不被损坏。 温度信息可以用于确定如何将信息分类为静态数据，以及在确定响应于静态图像数据的检测来显着降低显示像素驱动电流的程度。

公开(公告)号：US20140375704A1

公开(公告)日：2014-12-25

申请号：US14263937

申请日：2014-04-28

申请人： Apple Inc.

发明人： Yafei Bi ,  Wei H. Yao ,  Ahmad Al-Dahle ,  Jean-Pierre S. Guillou ,  Hyunwoo Nho ,  Koorosh Aflatooni

IPC分类号： G09G3/32

CPC分类号： G09G3/3275 ,  G09G3/3233 ,  G09G2320/041 ,  G09G2320/046 ,  G09G2320/0626 ,  G09G2320/0633 ,  G09G2320/0673 ,  G09G2320/103 ,  G09G2330/021 ,  G09G2330/025 ,  G09G2330/028 ,  G09G2330/045

摘要： A display may receive image data to be displayed for a user of an electronic device. Display driver circuitry in the display may analyze the data to detect static data. The image data may contain static frames of data or static portions of a frame of data. In response to detection of static data, the display driver circuitry can take actions to avoid display damage due to burn-in effects. The display driver circuitry may reduce a peak luminance value associated with a peak luminance control algorithm, may reduce display brightness, may map image data to reduced brightness levels, or may take other actions to ensure that display pixels in the display are not damaged. Temperature information may be used in determining how to classify information as static data and in determining how significantly to reduce display pixel drive currents in response to the detection of static image data.

摘要翻译： 显示器可以接收要为电子设备的用户显示的图像数据。 显示器中的显示驱动电路可能会分析数据以检测静态数据。 图像数据可以包含数据的静态帧或数据帧的静态部分。 响应于静态数据的检测，显示驱动器电路可以采取行动以避免由于老化效应引起的显示损坏。 显示驱动器电路可以减少与峰值亮度控制算法相关联的峰值亮度值，可以减少显示亮度，可以将图像数据映射到降低的亮度级别，或者可以采取其他动作来确保显示器中的显示像素不被损坏。 温度信息可以用于确定如何将信息分类为静态数据，以及在确定响应于静态图像数据的检测来显着降低显示像素驱动电流的程度。

公开(公告)号：US11580934B2

公开(公告)日：2023-02-14

申请号：US17741138

申请日：2022-05-10

申请人： Apple Inc.

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

IPC分类号： G09G5/10 ,  G06V40/13

摘要： 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：US10762836B1

公开(公告)日：2020-09-01

申请号：US15275023

申请日：2016-09-23

申请人： Apple Inc.

发明人： Hopil Bae ,  Wei H. Yao ,  Mohammad B. Vahid Far ,  Yafei Bi ,  Xiaofeng Wang ,  Thomas Charisoulis ,  Hasan Akyol ,  Henry C. Jen ,  Derek K. Shaeffer

IPC分类号： G09G3/3233

摘要： An electronic display row drivers or column drivers that send reference currents or voltages to microdrivers to be used to drive micropixels to particular levels. The microdrivers, in turn, ship current to micropixels that display images based at least in part on the shipped current.

公开(公告)号：US10755618B2

公开(公告)日：2020-08-25

申请号：US16389899

申请日：2019-04-19

申请人： Apple Inc.

发明人： Hung Sheng Lin ,  Shengkui Gao ,  Hyunwoo Nho ,  Chin-Wei Lin ,  Mohammad B. Vahid Far ,  Jie Won Ryu ,  Kingsuk Brahma ,  Junhua Tan ,  Sun-Il Chang ,  Shinya Ono ,  Jesse Aaron Richmond ,  Yafei Bi ,  Derek K. Shaeffer ,  Myungjoon Choi ,  Shiping Shen

IPC分类号： G09G3/00

摘要： Systems and methods are provided for differential sensing (DS), difference-differential sensing (DDS), correlated double sampling (CDS), correlated-correlated double sampling (CDS-CDS) and/or programmable capacitor matching to reduce display panel sensing noise. An electronic device may include one or more processors that generate image data according to sensing operations. The one or more processors may reference a sensing pattern as part of sensing operations. Applying test sensing signals based on the sensing pattern may help reduce error associated with sensing operations.