公开(公告)号：US11922867B1

公开(公告)日：2024-03-05

申请号：US17511369

申请日：2021-10-26

Applicant: Apple Inc.

Inventor： Aaron L. Holsteen ,  Kaikai Guo ,  Xiaokai Li ,  Zhibing Ge ,  Cheng Chen

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2310/08 ,  G09G2320/0261 ,  G09G2320/106

Abstract: In an embodiment, an electronic device includes a display and processing circuitry. The display includes a plurality of pixels arranged in a plurality of rows, wherein a first grouping of the plurality of rows displays image content during a first portion of an image frame, and wherein a second grouping of the plurality of rows displays image content during a second portion of the image frame. The processing circuitry is operatively coupled to the display and determines a velocity associated with the image content displayed by the first grouping of the plurality of rows moving across the display and adjusts a position of the image content displayed by the second grouping of the plurality of rows during the second portion of the image frame.

公开(公告)号：US11804197B1

公开(公告)日：2023-10-31

申请号：US17459731

申请日：2021-08-27

Applicant: Apple Inc.

Inventor： Aaron L. Holsteen ,  Xiaokai Li ,  Yuan Chen ,  Zhibing Ge

IPC: G09G3/36 ,  G02F1/135

CPC classification number: G09G3/3696 ,  G02F1/1352 ,  G02F1/1358 ,  G09G2230/00 ,  G09G2320/041

Abstract: A display may include illumination optics, a ferroelectric liquid crystal on silicon (fLCOS) panel, and a waveguide. The display may include a temperature sensor that gathers temperature sensor data. Control circuitry may select a non-square wave drive voltage waveform based on the gathered temperature sensor data and/or based on frame history information for the fLCOS display panel. The control circuitry may control the fLCOS panel to produce image light by driving the fLCOS panel using the selected non-square wave drive voltage waveform. The non-square wave drive voltage waveform may be an overdrive waveform or an underdrive waveform. This may serve to optimize the reflectance of the fLCOS display panel and thus the optical performance of the display module regardless of operating temperature and frame history.

公开(公告)号：US11829039B1

公开(公告)日：2023-11-28

申请号：US17412107

申请日：2021-08-25

Applicant: Apple Inc.

Inventor： Ziqian He ,  Xiaokai Li ,  Yuan Chen ,  Zhibing Ge ,  Aaron L. Holsteen

IPC: G02B27/28 ,  G02B27/01 ,  G02F1/135 ,  G02B6/10 ,  G02F1/13357 ,  G02F1/1335 ,  G02F1/133 ,  G09G3/34 ,  G09G3/36

CPC classification number: G02F1/135 ,  G02B6/10 ,  G02B27/0172 ,  G02F1/13312 ,  G02F1/133615 ,  G02F1/133622 ,  G09G3/3413 ,  G09G3/36 ,  G02B2027/0112 ,  G02F2202/10 ,  G09G2320/0242 ,  G09G2330/021 ,  G09G2360/144

Abstract: A display may include illumination optics, a ferroelectric liquid crystal on silicon (fLCOS) panel, and a waveguide. The illumination optics may include a red, green, and blue light sources. The fLCOS panel may produce image light by modulating a series of image frames onto illumination light. Control circuitry may control the illumination optics to produce the illumination light for each image frame in the series of image frames according to a green-heavy illumination sequence that includes first, second, and third time periods. The green light source may be active during each of the first, second, and third time periods. This may allow the green light source to be driven with a lower current density than the other light sources without significantly reducing image quality at an eye box. The lower current density may match the peak efficiency of the green light source, thereby minimizing power consumption by the display.

公开(公告)号：US11232745B2

公开(公告)日：2022-01-25

申请号：US16852323

申请日：2020-04-17

Applicant: Apple Inc.

Inventor： Aaron L. Holsteen ,  Xiaokai Li

IPC: G09G3/3225 ,  G09G3/3258 ,  G09G3/36 ,  G09G3/20

Abstract: A flat-panel display device and method to unify response times for all possible grey level transitions in a flat-panel display or an augmented reality display. A pixel drive compensator compares the current frame from a graphics processing unit and two previous frames to compensate for grey-level changes at a pixel level.

公开(公告)号：US10943959B1

公开(公告)日：2021-03-09

申请号：US16270142

申请日：2019-02-07

Applicant: Apple Inc.

Inventor： Aaron L. Holsteen ,  Chaohao Wang ,  Cheng Chen ,  Jun Li ,  Shih-Chyuan Fan Jiang ,  Xiaokai Li ,  Young Cheol Yang ,  Zhibing Ge

IPC: H01L27/32 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1333 ,  G02F1/1347

Abstract: An optical system may include equipment with a housing that is configured to receive external equipment such as a cellular telephone. The external equipment may include a display. To control the persistence of the display, the optical system may include a light modulating layer. The light modulating layer may switch between a transparent state in which display image light is passed through the light modulating layer to reach the viewer and an opaque state in which display image light is blocked by the light modulating layer from reaching the viewer. The light modulating layer may be placed in the transparent state for a portion of each display frame and the opaque state for the remaining portion of each display frame. The light modulating layer may be formed in the housing of the equipment that receives the external equipment or may be formed with the external equipment directly.