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    Electronic device display with a backlight having light-emitting diodes and driver integrated circuits in an active area
    91.
    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

    Applicant: Apple Inc.

    Inventor： Mingxia Gu ,  Jun Qi ,  Yanming Li ,  Jingdong Chen

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

    Abstract: 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.

    Illuminated input devices
    92.
    发明授权
    Illuminated input devices 有权

    公开(公告)号：US11360258B1

    公开(公告)日：2022-06-14

    申请号：US15170748

    申请日：2016-06-01

    Applicant: Apple Inc.

    Inventor： Ethan L. Huwe ,  Glenn K. Trainer ,  Jun Qi ,  Rong Liu ,  Victor H. Yin

    IPC: F21V8/00 ,  G02B27/30 ,  F21V23/04 ,  F21V17/10 ,  F21Y101/02

    Abstract: An electronic device may have input-output devices such as buttons formed from capacitive touch sensor electrodes. A transparent layer may be provided with opaque masking structures having a symbol-shaped opening aligned with a capacitive touch sensor electrode for a button or other input device. The symbol-shaped opening may be adjacent to the electrode and may be illuminated with light from a lighting system. The lighting system may include a light guide plate. The light guide plate may have edges that are oriented at non-zero angle with respect to each other. Light-emitting diodes of different colors may emit light into the edges. The light may be extracted from the light guide plate using bumps in a light extraction region. Light may be collimated using ribs formed on an opposing side of the light guide plate.

    Electronic Device Display with a Backlight Having Light-emitting Diodes and Driver Integrated Circuits in an Active Area
    94.
    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

    Applicant: Apple Inc.

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

    IPC: G02F1/1335 ,  G02F1/13357

    Abstract: 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.

    Color homogenizing film for displays with direct-lit backlight units
    96.
    发明授权
    Color homogenizing film for displays with direct-lit backlight units 有权

    公开(公告)号：US11036082B2

    公开(公告)日：2021-06-15

    申请号：US16422730

    申请日：2019-05-24

    Applicant: Apple Inc.

    Inventor： Rong Liu ,  Yu P. Sun ,  Victor H. Yin ,  Jun Qi ,  Ziruo Hong

    IPC: G02F1/13357 ,  G02F1/1335 ,  G02F1/1333 ,  F21V8/00

    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include an array of light-emitting diodes and a light reflector that helps reflect light from the light-emitting diodes through the pixel array. A color conversion layer may be used to convert light from the light-emitting diodes from blue light to white light. A microlens array layer formed over the color conversion layer may spread the light from the color conversion layer to homogenize the light. To ensure light is emitted from the backlight with a uniform color, the microlens array layer may have different transmittance portions. A central portion of the microlens array layer may transmit more light and reflect less light than an edge portion of the microlens array layer.

    Displays with adjustable direct-lit backlight units and power consumption compensation
    99.
    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

    Applicant: Apple Inc.

    Inventor： 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: G02F1/1335 ,  G09G3/36 ,  G09G3/34

    Abstract: 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.

    Display backlight with an optical film
    100.
    发明授权
    Display backlight with an optical film 有权

    公开(公告)号：US10571618B2

    公开(公告)日：2020-02-25

    申请号：US14943202

    申请日：2015-11-17

    Applicant: Apple Inc.

    Inventor： Rong Liu ,  Yu P. Sun ,  Jun Qi ,  Victor H. Yin

    IPC: G02F1/1335 ,  F21V8/00

    Abstract: A backlight unit may include a turning film that receives light from a light guide layer. The turning film may have a plurality of elongated protrusions that extend across the turning film. Each protrusion may have a concave surface. The concave surface may be a curved surface that curves inward towards the interior of the turning film. Light from the light guide layer may pass through the turning film and be reflected towards a viewer by the concave surfaces of the protrusions. In a liquid crystal display, the turning film may be interposed between the light guide layer and a lower polarizer. In certain embodiments, the turning film may be the only optical layer interposed between the light guide layer and the lower polarizer. In other embodiments, the turning layer and a diffuser layer may be the only optical layers interposed between the light guide layer and the lower polarizer.

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