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    Stress Insensitive Liquid Crystal Display
    41.
    发明申请
    Stress Insensitive Liquid Crystal Display 有权
    应力不敏感液晶显示器

    公开(公告)号：US20140078450A1

    公开(公告)日：2014-03-20

    申请号：US13891021

    申请日：2013-05-09

    Applicant: Apple Inc.

    Inventor： Young Cheol Yang ,  Chang Chen

    IPC: G02F1/13363

    CPC classification number: G02F1/13363 ,  G02F1/133371 ,  G02F1/133528 ,  G02F2001/133565 ,  G02F2001/133638

    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 internal layers may be incorporated into the display to help ensure that linearly polarized backlight that passes through the display is not undesirably converted into elliptically polarized light. The internal layers may include a thin-film polarizer layer that forms a coating on the color filter layer, a thin-film polarizer layer that forms a coating on the thin-film-transistor layer, a retarder layer that is formed as a coating on the color filter layer, and a retarder layer that is formed as a coating on the thin-film-transistor layer.

    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，可以将一个或多个内层结合到显示器中，以帮助确保通过显示器的线偏振的背光不会不期望地转换为椭圆偏振光。 内层可以包括在滤色器层上形成涂层的薄膜偏振层，在薄膜晶体管层上形成涂层的薄膜偏振层，形成为涂层的延迟层 滤色器层和在薄膜晶体管层上形成为涂层的延迟层。

    Wave Plate Arrangements for an Optical System
    45.
    发明公开
    Wave Plate Arrangements for an Optical System 审中-公开

    公开(公告)号：US20240094455A1

    公开(公告)日：2024-03-21

    申请号：US18261981

    申请日：2022-01-11

    Applicant: Apple Inc.

    Inventor： Jin Yan ,  Young Cheol Yang ,  Zhibing Ge

    IPC: G02B5/30 ,  G02B27/00 ,  G02B27/01 ,  G02B27/09 ,  G02B27/28

    CPC classification number: G02B5/3083 ,  G02B27/0018 ,  G02B27/0172 ,  G02B27/0955 ,  G02B27/0977 ,  G02B27/286 ,  G02B2027/0116

    Abstract: An electronic device may include a display system and an optical system that are supported by a housing. The optical system may be a catadioptric optical system having one or more lens elements. The optical system may include a wave plate stack with one or more wave plates. The display system may include a polarizer stack with a linear polarizer and one or more wave plates. The optical system and display system may each include a negative dispersion quarter wave plate. A positive C-plate may be positioned adjacent to each quarter wave plate. The optical system may include a quarter wave plate having positive birefringence whereas the display system may include a quarter wave plate having negative birefringence. The optical system and display system may each include a quarter wave plate and a half wave plate.

    Electronic Devices With Flexible Display Cover Layers
    48.
    发明申请
    Electronic Devices With Flexible Display Cover Layers 有权

    公开(公告)号：US20220376203A1

    公开(公告)日：2022-11-24

    申请号：US17879705

    申请日：2022-08-02

    Applicant: Apple Inc.

    Inventor： Hoon Sik Kim ,  Terry C. Lam ,  Chang-Chia Huang ,  Paul S. Drzaic ,  Yasmin F. Afsar ,  Young Cheol Yang ,  Leiming Wang

    IPC: H01L51/52 ,  H01L51/00 ,  H01L51/56 ,  H05K7/20 ,  H05K5/00

    Abstract: An electronic device may have a hinge that allows the device to be flexed about a bend axis. A display may span the bend axis. To facilitate bending about the bend axis without damage, the display may include a display cover layer with a flexible portion. The flexible portion of the display cover layer may be interposed between first and second rigid portions of the display cover layer. The display cover layer may also include a layer with self-healing properties. The layer of self-healing material may be formed across the entire display cover layer or may be formed only in the flexible region of the display cover layer. The display cover layer may include a layer of elastomer in the flexible region of the display cover layer for increased flexibility. Self-healing may be initiated or expedited by externally applied heat, light, electric current, or other type of external stimulus.

    Light-Emitting Diode Display Pixels with Microlens Stacks over Light-Emitting Diodes
    49.
    发明申请
    Light-Emitting Diode Display Pixels with Microlens Stacks over Light-Emitting Diodes 有权

    公开(公告)号：US20210391513A1

    公开(公告)日：2021-12-16

    申请号：US17225796

    申请日：2021-04-08

    Applicant: Apple Inc.

    Inventor： Jaein Choi ,  Joy M. Johnson ,  Lai Wang ,  Ben-Li Sheu ,  Hairong Tang ,  Steven E. Molesa ,  Sunggu Kang ,  Young Cheol Yang

    IPC: H01L33/58 ,  H01L51/52

    Abstract: To extract light from a light-emitting diode (and thereby improve efficiency of the display), a microlens stack may be formed over the light-emitting diode. The microlens stack may include an array of microlenses that is covered by an additional single microlens. Having stacked microlenses in this way increases lens power without increasing the thickness of the display. The array of microlenses may be formed from an inorganic material whereas the additional single microlens may be formed from an organic material. The additional single microlens may conform to the upper surfaces of the array of microlenses. An additional low-index layer may be interposed between the light-emitting diode and the array of microlenses. A diffusive layer may be formed around the light-emitting diode to capture light emitted from the light-emitting diode sidewalls.

    Waveguided Display System With Adjustable Lenses
    50.
    发明申请
    Waveguided Display System With Adjustable Lenses 审中-公开

    公开(公告)号：US20200049996A1

    公开(公告)日：2020-02-13

    申请号：US16520718

    申请日：2019-07-24

    Applicant: Apple Inc.

    Inventor： Jin Yan ,  Young Cheol Yang ,  Igor Stamenov ,  Scott M. DeLapp ,  Francesco Aieta ,  Bradley C. Steele ,  Enkhamgalan Dorjgotov ,  Se Baek Oh

    IPC: G02B27/01 ,  G02F1/137 ,  G02F1/133 ,  G02F1/1337 ,  G02F1/1347 ,  F21V8/00

    Abstract: An electronic device may have a display that provides image light to a waveguide. First and second liquid crystal lenses may be mounted to opposing surfaces of the waveguide. An coupler may couple the image light out of the waveguide through the first lens. The second lens may convey world light to the first lens. Control circuitry may control the first lens to apply a first optical power to the image light and the world light and may control the second lens to apply a second optical power to the world light that cancels out the first optical power. Each lens may include two layers of liquid crystal molecules having antiparallel pretilt angles. The pretilt angles and rubbing directions of the first lens may be antiparallel to corresponding pretilt angles and rubbing directions of the second lens about the waveguide.

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