公开(公告)号：US20220208091A1

公开(公告)日：2022-06-30

申请号：US17648074

申请日：2022-01-14

Applicant: Apple Inc.

Inventor： Derek K. Shaeffer ,  Mahdi Farrokh Baroughi ,  Xiaofeng Wang ,  Sam S. Li ,  John T. Wetherell ,  Henry C. Jen ,  Xiang Lu ,  Hasan Akyol ,  Hopil Bae ,  Xiang Fang ,  Hjalmar Edzer Ayco Huitema ,  Tore Nauta

IPC: G09G3/3216 ,  H01L27/32 ,  G09G3/20 ,  H05B45/20

Abstract: Local passive matrix displays and methods of operation are described. In an embodiment, the display includes a pixel driver chip coupled with a matrix of rows and columns of LEDs. The pixel driver chips may be arranged in rows across the display with separate portions to operate separate matrices of LEDs.

公开(公告)号：US20210166609A1

公开(公告)日：2021-06-03

申请号：US17088809

申请日：2020-11-04

Applicant: Apple Inc.

Inventor： Xiang Lu ,  Mahdi Farrokh Baroughi ,  Xiaofeng Wang ,  Derek K. Shaeffer ,  Henry C. Jen ,  Hopil Bae

IPC: G09G3/20 ,  G09G3/3216 ,  G09G3/3275 ,  H01L27/32

Abstract: Hybrid architectures and method methods of operating a display panel are described. In an embodiment, row driver and pixel driver functions are combined in a group of backbone hybrid pixel driver chips, wherein global signal lines are distributed to the backbone hybrid pixel driver chips, where the global signals are manipulated and distributed to a row of pixel driver chips.

公开(公告)号：US10923015B2

公开(公告)日：2021-02-16

申请号：US16335148

申请日：2017-09-20

Applicant: Apple Inc.

Inventor： Derek K. Shaeffer ,  Hopil Bae ,  Yafei Bi ,  Wei H. Yao ,  Xiaofeng Wang

IPC: G09G3/20 ,  G09G3/3225 ,  G06F1/06 ,  G09G3/3266

Abstract: A display device may include a plurality of pixels that may display image data on a display. The display device may also include a circuit that may receive pixel data including a gray level for at least one pixel of the plurality of pixels. The circuit may then receive an emission clock signal using a clock circuit based on the pixel data, such that the emission clock signal may cause the at least one pixel to receive a current for an amount of time based on the gray level. The circuit may then gate off the clock circuit after the amount of time.

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：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.