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    Displays with Direct-lit Backlight Units
    1.
    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

    Applicant: Apple Inc.

    Inventor： 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: G02F1/1335

    Abstract: 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
    2.
    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

    Applicant: Apple Inc.

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

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

    CPC classification number: G02F1/13363 ,  G02F1/0131 ,  G02F1/1333 ,  G02F1/133305 ,  G02F1/133528 ,  G02F1/133634 ,  G02F2202/40

    Abstract: 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.

    Abstract translation: 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
    3.
    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

    Applicant: Apple Inc.

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

    IPC: G02F1/13363 ,  G02F1/1335

    CPC classification number: G02F1/13363 ,  G02F1/0131 ,  G02F1/1333 ,  G02F1/133305 ,  G02F1/133528 ,  G02F1/133634 ,  G02F2202/40

    Abstract: 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.

    Abstract translation: 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。

    Backlight units with support posts and cavity height monitoring
    9.
    发明授权
    Backlight units with support posts and cavity height monitoring 有权

    公开(公告)号：US10739638B2

    公开(公告)日：2020-08-11

    申请号：US16409688

    申请日：2019-05-10

    Applicant: Apple Inc.

    Inventor： Rong Liu ,  Yu P. Sun ,  Erik A. Zweigle ,  Jun Qi ,  Victor H. Yin ,  Ziruo Hong ,  Sungwon Bae

    IPC: G02F1/13 ,  G02F1/13357 ,  F21K9/64 ,  F21K9/68 ,  G09G3/34 ,  G09G3/36

    Abstract: An electronic device may have a display with a backlight. The backlight provides backlight illumination for an array of pixels that is displaying images. The backlight may include an array of cells. Each cell may contain a light source with one or more light-emitting diodes and a cavity reflector that reflects light from the light source outwardly through a diffuser for use in forming the backlight illumination. The light sources may be mounted to a printed circuit. Support posts on the printed circuit may be used to maintain the diffuser at a fixed distance from the printed circuit. Sensors on the printed circuit may be used to measure separation distances between the printed circuit and diffuser. Adjustments to pixel gain profiles can be made based on the measured separation distances.

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