公开(公告)号：EP3726520A1

公开(公告)日：2020-10-21

申请号：EP20169860.2

申请日：2020-04-16

申请人： Apple Inc.

发明人： JUNG, Tobias ,  ALBRECHT, Marc ,  PETROVICH, Duane M. ,  CHANG, Sean C. ,  ZALATIMO, David S. ,  EMELIE, Pierre-Yves ,  LUTHRA, Manev ,  LE, Chengrui ,  HONG, Lingyu ,  YAO, Wei H.

IPC分类号： G09G3/34

摘要： A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated by a backlight unit that includes an array of light-emitting diodes. A backlight brightness selection circuit may select brightness values for the light-emitting diodes. The backlight brightness selection circuit may select the brightness values based on image data, based on brightness values used in previous image frames, based on device information, and/or based on sensor information. The backlight brightness selection circuit may select the backlight brightness levels to mitigate visible artifacts such as flickering and halo. The backlight levels selected by the backlight brightness selection may be modified by a power consumption compensation circuit. The power consumption compensation circuit may estimate the amount of power consumption required to operate the backlight using the target brightness levels and may modify the target brightness levels to meet maximum power consumption requirements.

公开(公告)号：EP3284079A1

公开(公告)日：2018-02-21

申请号：EP16723611.6

申请日：2016-05-05

申请人： Apple Inc.

发明人： TANN, Christopher P. ,  PINTZ, Sandro H. ,  IYENGAR, Satish S. ,  ZALATIMO, David S.

IPC分类号： G09G5/12 ,  G06F1/32 ,  G09G5/00

CPC分类号： G09G3/3618 ,  G06F1/3218 ,  G06F1/3265 ,  G09G3/3611 ,  G09G5/001 ,  G09G5/006 ,  G09G5/12 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2360/18 ,  Y02D10/153

摘要： Methods and devices for reducing the power consumption of a frame buffer and timing controller of an electronic display are provided. By way of example, a method of operating an electronic display includes receiving image data from a processor of the electronic display, storing the image data to a buffer of the electronic display, reading the image data from the buffer to supply the image data to a column driver of the electronic display, determining whether an amount of image data stored in buffer is less than a threshold, and switching from reading the image data from the buffer to reading the image data directly from the processor when the amount of image data stored in buffer is less than the threshold.

公开(公告)号：EP3353770A1

公开(公告)日：2018-08-01

申请号：EP16760313.3

申请日：2016-08-26

申请人： Apple Inc.

发明人： TRIPATHI, Brijesh ,  TANN, Christopher P. ,  WANG, Chaohao ,  ZALATIMO, David S. ,  COTE, Guy

IPC分类号： G09G3/20

CPC分类号： G09G3/3614 ,  G09G3/20 ,  G09G2310/0256 ,  G09G2310/08 ,  G09G2320/0204 ,  G09G2330/021 ,  G09G2340/0435

摘要： Devices and methods for reducing and/or substantially eliminating pixel charge imbalance due to variable refresh rates are provided. By way of example, a method includes providing a first frame of image data via a processor to a plurality of pixels of the display during a first frame period corresponding to a first refresh rate, and providing a second frame of image data to the plurality of pixels of the display during a second frame period corresponding to a second refresh rate. The method further includes dividing the first frame period into a first frame sub-period and a second frame sub-period, and driving the plurality of pixels of the display with the first frame of image data during the first frame sub-period and the second frame sub-period.

公开(公告)号：EP3238207A2

公开(公告)日：2017-11-01

申请号：EP16710515.4

申请日：2016-02-09

申请人： Apple Inc.

发明人： WANG, Chaohao ,  ZALATIMO, David S. ,  ZHAO, Lei ,  TANN, Christopher P. ,  SACCHETTO, Paolo ,  PINTZ, Sandro H. ,  HUANG, Yi ,  QI, Jun

IPC分类号： G09G3/20

CPC分类号： G09G3/2092 ,  G09G3/20 ,  G09G2310/0254 ,  G09G2310/04 ,  G09G2310/08 ,  G09G2320/0266 ,  G09G2340/0435

摘要： One embodiment describes an electronic display that displays image frames with a first refresh rate or a second refresh rate, in which the second refresh rate is lower than the first refresh rate; a display driver that writes the image frames by applying voltage to a display panel; and a timing controller that receives first image data from an image source, in which the first image data describes a first image frame and a first desired refresh rate equal to the second fresh rate; and that instructs the display driver to apply a first set of voltage polarities to the display panel to display first image frame at the first refresh rate and to apply a second set of voltage polarities to the display the first image frame at the second refresh rate when polarity of inversion imbalance accumulated is equal to polarity of the first set of voltage polarities.

摘要翻译： 一个实施例描述了一种电子显示器，其以第一刷新率或第二刷新率显示图像帧，其中第二刷新率低于第一刷新率; 显示驱动器，通过向显示面板施加电压来写入图像帧; 以及定时控制器，其从图像源接收第一图像数据，其中第一图像数据描述第一图像帧和等于第二新鲜率的第一所需刷新率; 并且指示显示驱动器将第一组电压极性施加到显示面板以按第一刷新率显示第一图像帧并且当以第二刷新率显示第一图像帧时将第二组电压极性施加到第二刷新率 积累的反转不平衡的极性等于第一组电压极性的极性。