公开(公告)号：US11302264B2

公开(公告)日：2022-04-12

申请号：US16510755

申请日：2019-07-12

Applicant: Apple Inc.

Inventor： Shengkui Gao ,  Marc Joseph DeVincentis ,  Yue Jack Chu ,  Sinan Alousi ,  Mohammad Hajirostam ,  Mohammad Ali Jangda ,  Koorosh Aflatooni ,  Pierre-Yves Emelie ,  Yafei Bi ,  Paolo Sacchetto ,  Kasra Omid-Zohoor

IPC: G09G3/3291 ,  G09G3/3233 ,  G09G3/36 ,  H01L27/32

Abstract: A display device may include rows of pixels that display image data on a display and a circuit. The circuit may receive pixel data value of image data for a pixel in a first row of the rows of pixels, determine a weight factor to apply to the pixel data value based on a position of the first row with respect to the other rows, such that each row is associated with a current-resistance (IR) drop across the display. The weight factor is determined based on a respective IR drop associated with the first row. The circuit may also generate a weighted pixel data value based on the weight factor and the pixel data value and send the weighted pixel data value to a display driver circuit that renders the image data via the display.

公开(公告)号：US20210304703A1

公开(公告)日：2021-09-30

申请号：US17217827

申请日：2021-03-30

Applicant: Apple Inc.

Inventor： Yang Xu ,  Jie Won Ryu ,  Kingsuk Brahma ,  Koorosh Aflatooni ,  Marc Joseph DeVincentis ,  Mohammad Ali Jangda ,  Paolo Sacchetto ,  Shengkui Gao ,  Sinan Alousi ,  Yafei Bi ,  Chun Lu

IPC: G09G5/10

Abstract: Systems, methods, and devices are provided for providing intra-frame luminance scaling to avoid drawing excessive power while still providing exceptional brightness. An instantaneous average pixel luminance of an electronic display may be determined. The instantaneous average pixel luminance may correspond to an amount of light currently being emitted by the electronic display due to a previous image frame and a current image frame. Based at least in part on the instantaneous average pixel luminance, the luminance of a subset of pixels of image data of the current image frame may be adjusted, thereby allowing the electronic display to operate at a relatively high brightness level without exceeding a power limit.

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：US11087670B2

公开(公告)日：2021-08-10

申请号：US15895248

申请日：2018-02-13

Applicant: Apple Inc.

Inventor： Prashant Mandlik ,  Bhadrinarayana Lalgudi Visweswaran ,  Izhar Z Ahmed ,  Zhen Zhang ,  Tsung-Ting Tsai ,  Ki Yeol Byun ,  Yu Cheng Chen ,  Sungki Lee ,  Mohammad Hajirostam ,  Sinan Alousi

IPC: G09G3/32 ,  H01L51/00 ,  H01L27/32 ,  G09G3/3266 ,  G09G3/36 ,  G01L1/22 ,  G11C19/28

Abstract: An electronic device may have a flexible display such as an organic light-emitting diode display. A strain sensing resistor may be formed on a bent tail portion of the flexible display to gather strain measurements. Resistance measurement circuitry in a display driver integrated circuit may make resistance measurements on the strain sensing resistor and a temperature compensation resistor to measure strain. A crack detection line may be formed from an elongated pair of traces that are coupled at their ends to form a loop. The crack detection line may run along a peripheral edge of the flexible display. Crack detection circuitry may monitor the resistance of the crack detection line to detect cracks. The crack detection circuitry may include switches that adjust the length of the crack detection line and thereby allow resistances to be measured for different segments of the line.

公开(公告)号：US20190086992A1

公开(公告)日：2019-03-21

申请号：US16028199

申请日：2018-07-05

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Hyunwoo Nho ,  Hyunsoo Kim ,  Shengkui Gao ,  Chun Lu ,  Sinan Alousi ,  Chin-Wei Lin ,  Jesse Aaron Richmond ,  Yafei Bi ,  Injae Hwang ,  Haifeng Li ,  Mohammad Hajirostam

IPC: G06F1/32 ,  G09G3/3258

Abstract: An electronic display includes an active area having an array of pixels. The electronic display also includes multiple data power rails coupled to the active area that supply power to the array of pixels. The electronic display further includes data driving circuitry coupled to the multiple data power rails that drive the array of pixels. The electronic display also includes a controller coupled to the data driving circuitry having a processor. The processor causes the array of pixels to emit light based on a display brightness value. The processor also causes a pixel of the array of pixels to emit light at a brightness of gray level 0 by dynamically adjusting a data power rail of the multiple data power rails.