中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

66 records (took 0.041 seconds)

    Color homogenizing film for displays with direct-lit backlight units
    32.
    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.

    Display backlight with an optical film
    34.
    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.

    Displays with Direct-lit Backlight Units and Color Conversion Layers
    36.
    发明申请
    Displays with Direct-lit Backlight Units and Color Conversion Layers 审中-公开

    公开(公告)号：US20190285943A1

    公开(公告)日：2019-09-19

    申请号：US16294731

    申请日：2019-03-06

    Applicant: Apple Inc.

    Inventor： Rong Liu ,  Daming Xu ,  Jun Qi ,  Ling Han ,  Mookyung Son ,  Chenhua You ,  Victor H. Yin ,  Xinyu Zhu ,  Heesang Suh ,  Juan He ,  Joshua A. Spechler ,  Zhenyue Luo ,  Suraj P. Gorkhali

    IPC: G02F1/1335 ,  H05K1/18

    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 a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.

    Light-Emitting Diodes in Displays with Direct-lit Backlight Units
    37.
    发明申请
    Light-Emitting Diodes in Displays with Direct-lit Backlight Units 审中-公开

    公开(公告)号：US20190285942A1

    公开(公告)日：2019-09-19

    申请号：US16294727

    申请日：2019-03-06

    Applicant: Apple Inc.

    Inventor： Rong Liu ,  Edward H Kang ,  Jun Qi ,  Mookyung Son ,  Pee Khaim So ,  Victor H. Yin ,  Wei Lv ,  Wenyong Zhu ,  Zhenyue Luo ,  Xinyu Zhu ,  Ling Han ,  Hung Sheng Lin

    IPC: G02F1/1335 ,  H05K1/18 ,  H05K1/02 ,  H05K3/22 ,  H05K3/34

    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 a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.

    Displays with Direct-lit Backlight Units
    38.
    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.

Patent Agency Ranking