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    Electronic device display with a backlight having light-emitting diodes and driver integrated circuits in an active area
    2.
    发明授权
    Electronic device display with a backlight having light-emitting diodes and driver integrated circuits in an active area 有权

    公开(公告)号：US11428987B2

    公开(公告)日：2022-08-30

    申请号：US17203340

    申请日：2021-03-16

    申请人： Apple Inc.

    发明人： Mingxia Gu ,  Jun Qi ,  Yanming Li ,  Jingdong Chen

    IPC分类号： G02F1/1335 ,  G02F1/13357 ,  H05B47/16 ,  H05B47/105 ,  H01L25/16 ,  G09G3/34

    摘要： A pixel array may be illuminated with backlight illumination from a backlight. The backlight may include a two-dimensional array of light-emitting diodes, with each light-emitting diode being placed in a respective cell. Different light-emitting diodes may have unique brightness magnitudes based on the content of the given display frame. Driver integrated circuits may control one or more associated light-emitting diodes to have a desired brightness level. The driver integrated circuits may be formed in an active area of the backlight. The driver integrated circuits may be arranged in groups that are daisy chained together. A digital signal (that includes information such as addressing information) may be propagated through the group of driver integrated circuits. To manage thermal performance of the backlight, the backlight may include a thermally conductive layer and/or a heat sink structure. To increase the efficiency of the backlight, the backlight may include one or more reflective layers.

    Electronic Device Display with a Backlight Having Light-emitting Diodes and Driver Integrated Circuits in an Active Area
    3.
    发明申请
    Electronic Device Display with a Backlight Having Light-emitting Diodes and Driver Integrated Circuits in an Active Area 有权

    公开(公告)号：US20210364861A1

    公开(公告)日：2021-11-25

    申请号：US17203311

    申请日：2021-03-16

    申请人： Apple Inc.

    发明人： David W. Lum ,  Jingdong Chen ,  Mingxia Gu ,  Jun Qi

    IPC分类号： G02F1/1335 ,  G02F1/13357

    摘要： A pixel array may be illuminated with backlight illumination from a backlight. The backlight may include a two-dimensional array of light-emitting diodes, with each light-emitting diode being placed in a respective cell. Different light-emitting diodes may have unique brightness magnitudes based on the content of the given display frame. Driver integrated circuits may control one or more associated light-emitting diodes to have a desired brightness level. The driver integrated circuits may be formed in an active area of the backlight. The driver integrated circuits may be arranged in groups that are daisy chained together. A digital signal (that includes information such as addressing information) may be propagated through the group of driver integrated circuits. To manage thermal performance of the backlight, the backlight may include a thermally conductive layer and/or a heat sink structure. To increase the efficiency of the backlight, the backlight may include one or more reflective layers.

    Displays with Adjustable Direct-lit Backlight Units and Adaptive Processing
    4.
    发明申请
    Displays with Adjustable Direct-lit Backlight Units and Adaptive Processing 审中-公开

    公开(公告)号：US20200335047A1

    公开(公告)日：2020-10-22

    申请号：US16418748

    申请日：2019-05-21

    申请人： Apple Inc.

    发明人： Duane M. Petrovich ,  Sean C. Chang ,  Tobias Jung ,  Pierre-Yves Emelie ,  Marc Albrecht ,  Chen Zheng ,  Andrei E. Toma ,  Kevin W. Sliech ,  Mingxia Gu ,  Wei H. Yao

    IPC分类号： G09G3/34 ,  G02F1/1335

    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.

    Displays with adjustable direct-lit backlight units and power consumption compensation
    5.
    发明授权
    Displays with adjustable direct-lit backlight units and power consumption compensation 有权

    公开(公告)号：US10571744B1

    公开(公告)日：2020-02-25

    申请号：US16388496

    申请日：2019-04-18

    申请人： Apple Inc.

    发明人： Sean C. Chang ,  Tobias Jung ,  Marc Albrecht ,  Abdeslam Hafidi ,  Jun Qi ,  Duane M. Petrovich ,  Mingxia Gu ,  Xiang Fang ,  Pierre-Yves Emelie ,  Wei H Yao

    IPC分类号： G02F1/1335 ,  G09G3/36 ,  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.

    Displays with Direct-lit Backlight Units
    6.
    发明申请
    Displays with Direct-lit Backlight Units 审中-公开

    公开(公告)号：US20190265548A1

    公开(公告)日：2019-08-29

    申请号：US16409567

    申请日：2019-05-10

    申请人： Apple Inc.

    发明人： Rong Liu ,  Yu P. Sun ,  Abdeslam Hafidi ,  Erik A. Zweigle ,  Jun Qi ,  Mingxia Gu ,  Victor H. Yin ,  Xiangtong Li ,  Yanming Li ,  Yi Huang ,  Ziruo Hong

    IPC分类号： G02F1/1335

    摘要： An array of pixels in a display may be illuminated by a backlight having an array of light-emitting diodes in an array of respective cells. A reflector is used to reflect light from the light-emitting diodes through the array of pixels. Within the cells, the reflector has cross-sectional profiles that help distribute light emitted from the light-emitting diodes toward edges of the cells. A light diffuser layer for the backlight may have a partially reflective layer such as a thin-film interference filter with an angularly dependent transmission. Within each cell, the reflector may have cross-sectional profiles with portions that are parabolic or elliptical.

    Liquid crystal displays with reduced light leakage
    7.
    发明授权
    Liquid crystal displays with reduced light leakage 有权
    具有减少漏光的液晶显示器

    公开(公告)号：US09081230B2

    公开(公告)日：2015-07-14

    申请号：US13887904

    申请日：2013-05-06

    申请人： Apple Inc.

    发明人： Yi Huang ,  Pongpinit Towashiraporn ,  Erik A. Zweigle ,  Mingxia Gu ,  Wei Chen ,  Cheng Chen ,  Young Cheol Yang ,  Isaac V. Kauvar

    IPC分类号： G02F1/1333 ,  G02F1/13363 ,  G02F1/1335 ,  G02F1/01

    CPC分类号： G02F1/13363 ,  G02F1/0131 ,  G02F1/1333 ,  G02F1/133305 ,  G02F1/133528 ,  G02F1/133634 ,  G02F2202/40

    摘要： A display is provided that has upper and lower polarizers, a color filter layer, a liquid crystal layer, and a thin-film transistor layer. The color filter layer and thin-film transistor layer may be formed from materials such as glass that are subject to stress-induced birefringence. To reduce light leakage that reduces display performance, one or more birefringence compensation layers may be incorporated into the display to help compensate for any birefringence effects. The compensation layers may include a birefringence compensation layer attached to the color filter layer or the thin-film transistor layer. A display may include an upper compensation layer attached to the color filter layer and a lower compensation layer attached to the thin-film transistor layer. The compensation layer may be formed from glass or polymer materials that have a negative photo-elastic constant.

    摘要翻译： 提供具有上下偏振器，滤色器层，液晶层和薄膜晶体管层的显示器。 滤色器层和薄膜晶体管层可以由诸如经受应力引起的双折射的玻璃的材料形成。 为了减少降低显示性能的漏光，可以在显示器中并入一个或多个双折射补偿层，以帮助补偿任何双折射效应。 补偿层可以包括附着到滤色器层或薄膜晶体管层的双折射补偿层。 显示器可以包括附接到滤色器层的上补偿层和附接到薄膜晶体管层的下补偿层。 补偿层可以由具有负光弹性常数的玻璃或聚合物材料形成。

    Liquid Crystal Displays With Reduced Light Leakage
    8.
    发明申请
    Liquid Crystal Displays With Reduced Light Leakage 有权
    具有减少漏光的液晶显示器

    公开(公告)号：US20140327861A1

    公开(公告)日：2014-11-06

    申请号：US13887904

    申请日：2013-05-06

    申请人： Apple Inc.

    发明人： Yi Huang ,  Pongpinit Towashiraporn ,  Erik A. Zweigle ,  Mingxia Gu ,  Wei Chen ,  Cheng Chen ,  Young Cheol Yang ,  Isaac V. Kauvar

    IPC分类号： G02F1/13363 ,  G02F1/1335

    CPC分类号： G02F1/13363 ,  G02F1/0131 ,  G02F1/1333 ,  G02F1/133305 ,  G02F1/133528 ,  G02F1/133634 ,  G02F2202/40

    摘要： A display is provided that has upper and lower polarizers, a color filter layer, a liquid crystal layer, and a thin-film transistor layer. The color filter layer and thin-film transistor layer may be formed from materials such as glass that are subject to stress-induced birefringence. To reduce light leakage that reduces display performance, one or more birefringence compensation layers may be incorporated into the display to help compensate for any birefringence effects. The compensation layers may include a birefringence compensation layer attached to the color filter layer or the thin-film transistor layer. A display may include an upper compensation layer attached to the color filter layer and a lower compensation layer attached to the thin-film transistor layer. The compensation layer may be formed from glass or polymer materials that have a negative photo-elastic constant.

    摘要翻译： 提供具有上下偏振器，滤色器层，液晶层和薄膜晶体管层的显示器。 滤色器层和薄膜晶体管层可以由诸如经受应力引起的双折射的玻璃的材料形成。 为了减少降低显示性能的漏光，可以在显示器中并入一个或多个双折射补偿层，以帮助补偿任何双折射效应。 补偿层可以包括附着到滤色器层或薄膜晶体管层的双折射补偿层。 显示器可以包括附接到滤色器层的上补偿层和附接到薄膜晶体管层的下补偿层。 补偿层可以由具有负光弹性常数的玻璃或聚合物材料形成。