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公开(公告)号：US11762197B2
公开(公告)日：2023-09-19
申请号：US16935083
申请日：2020-07-21
Applicant: Apple Inc.
Inventor： Jin Yan , Xiaokai Li , Young Cheol Yang
CPC classification number: G02B27/0172 , G02B3/10 , G02B6/005 , G02B27/286 , G02F1/0136 , G02F1/137
Abstract: An electronic device such as a head-mounted device may have a display that produces a display image. The head-mounted device may have an optical system that merges real-world images from real-world objects with display images. The optical system provides the real-world images and display images to an eye box for viewing by a user. The optical system may use time interleaving techniques and/or polarization effects to merge real-world and display images. Switchable devices such as polarization switches and tunable lenses may be controlled in synchronization with frames of display images. Geometrical phase lenses may be used that exhibit different lens powers to different polarizations of light.
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公开(公告)号：US11754886B1
公开(公告)日：2023-09-12
申请号：US17516499
申请日：2021-11-01
Applicant: Apple Inc.
Inventor： Shih-Chyuan Fan Jiang , Yuechen Wu , Xiaokai Li , Cheng-Ho Yu , Zhibing Ge
IPC: G02F1/1343 , G02F1/1335
CPC classification number: G02F1/134309 , G02F1/133514 , G02F1/133553
Abstract: Increasing resolution of liquid crystal displays may result in small distances between adjacent liquid crystal display pixels. This tight pixel spacing may reduce transmission through the liquid crystal display pixels and may result in cross-talk between the liquid crystal display pixels. To increase transmission and, correspondingly, display efficiency, a reflective layer may be included in the liquid crystal display. The reflective layer recycles backlight that may otherwise be absorbed, improving transmittance and efficiency. To reduce color shift and color mixing caused by cross-talk, the pixels may have their pixel electrodes arranged in a zigzag layout. Each pixel electrode may have a height that is less than or equal to the total height of the pixel divided by two. The pixel electrodes in a given row are also alternatingly coupled to first and second gate lines. This zigzag layout results in an increased distance between adjacent pixel electrodes, mitigating pixel cross-talk.
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公开(公告)号：US20230152620A1
公开(公告)日：2023-05-18
申请号：US18156587
申请日：2023-01-19
Applicant: Apple Inc.
Inventor： Yuan Chen , Donald R. Monroe , Peter F. Masschelein , Stephen B. Lynch , Xiaokai Li , Zhibing Ge
IPC: G02F1/1334 , G02F1/137 , G02F1/1333 , G02F1/01 , B60J3/00 , B60J3/04
CPC classification number: G02F1/1334 , G02F1/13737 , G02F1/133365 , G02F1/0121 , G02F1/13725 , B60J3/007 , B60J3/04 , G02F2203/01
Abstract: A system such as a vehicle, building, or electronic device system may have a support structure with one or more windows. The support structure and window may separate an interior region within the system from a surrounding exterior region. Control circuitry may receive input such as user input and may adjust an adjustable layer in the window based on the input. The adjustable layer may have a polymer matrix layer with embedded cells. The cells may include intermixed guest-host liquid crystal cells and liquid crystal cells. The guest-host liquid crystal cells and liquid crystal cells may have different liquid crystal materials and/or different sizes that allow the guest-host liquid crystal cells and liquid crystal cells to electrically switch states at different respective threshold voltages. Based on the user input or other input the control circuitry can adjust a drive signal across the adjustable layer to change light transmittance and haze.
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公开(公告)号：US11232745B2
公开(公告)日：2022-01-25
申请号：US16852323
申请日：2020-04-17
Applicant: Apple Inc.
Inventor： Aaron L. Holsteen , Xiaokai Li
IPC: G09G3/3225 , G09G3/3258 , G09G3/36 , G09G3/20
Abstract: A flat-panel display device and method to unify response times for all possible grey level transitions in a flat-panel display or an augmented reality display. A pixel drive compensator compares the current frame from a graphics processing unit and two previous frames to compensate for grey-level changes at a pixel level.
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Patent Agency Ranking
公开(公告)号：US11081069B2
公开(公告)日：2021-08-03
申请号：US16509406
申请日：2019-07-11
Applicant: Apple Inc.
Inventor： Jun Li , Chaohao Wang , Hopil Bae , Mitchell H. Kline , Xiaokai Li
Abstract: Aspects of the subject technology relate to displays for electronic devices and methods of operating the displays. The display may include an array of display pixels arranged in rows and columns. A v-drive operation in which rows are alternatingly operated about a center of each of two halves of the display is provided. Data rendering operations are provided that generate a virtual frame rate boost.
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公开(公告)号：US10943959B1
公开(公告)日：2021-03-09
申请号：US16270142
申请日：2019-02-07
Applicant: Apple Inc.
Inventor： Aaron L. Holsteen , Chaohao Wang , Cheng Chen , Jun Li , Shih-Chyuan Fan Jiang , Xiaokai Li , Young Cheol Yang , Zhibing Ge
IPC: H01L27/32 , G02F1/1335 , G02F1/13363 , G02F1/1333 , G02F1/1347
Abstract: An optical system may include equipment with a housing that is configured to receive external equipment such as a cellular telephone. The external equipment may include a display. To control the persistence of the display, the optical system may include a light modulating layer. The light modulating layer may switch between a transparent state in which display image light is passed through the light modulating layer to reach the viewer and an opaque state in which display image light is blocked by the light modulating layer from reaching the viewer. The light modulating layer may be placed in the transparent state for a portion of each display frame and the opaque state for the remaining portion of each display frame. The light modulating layer may be formed in the housing of the equipment that receives the external equipment or may be formed with the external equipment directly.
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公开(公告)号：US20210048674A1
公开(公告)日：2021-02-18
申请号：US16935083
申请日：2020-07-21
Applicant: Apple Inc.
Inventor： Jin Yan , Xiaokai Li , Young Cheol Yang
Abstract: An electronic device such as a head-mounted device may have a display that produces a display image. The head-mounted device may have an optical system that merges real-world images from real-world objects with display images. The optical system provides the real-world images and display images to an eye box for viewing by a user. The optical system may use time interleaving techniques and/or polarization effects to merge real-world and display images. Switchable devices such as polarization switches and tunable lenses may be controlled in synchronization with frames of display images. Geometrical phase lenses may be used that exhibit different lens powers to different polarizations of light.
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公开(公告)号：US10304416B2
公开(公告)日：2019-05-28
申请号：US15700045
申请日：2017-09-08
Applicant: Apple Inc.
Inventor： Xiaokai Li , Young Cheol Yang
Abstract: Aspects of the subject technology relate to display circuitry including pixel overdrive circuitry. The pixel overdrive circuitry includes one more lookup tables of boost values to be applied to pixel display values of a frame to be displayed, for overdrive of that frame. Each lookup table includes a lightness-blur-edge-width-based boost value. The lightness-blur-edge-width-based boost value matches a lightness-blur-edge-width of an intermediate grey-to-grey transition to a lightness-blur-edge-width of a maximum grey-to-grey transition.
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公开(公告)号：US20170242286A1
公开(公告)日：2017-08-24
申请号：US15237489
申请日：2016-08-15
Applicant: Apple Inc.
Inventor： Xiaokai Li , Young Cheol Yang , Shaorui Yang , Da Yu , Jin Yan
IPC: G02F1/1339 , G02F1/1368 , G02F1/1335
CPC classification number: G02F1/13394 , G02F2001/13396 , G02F2001/13398
Abstract: A display may have a color filter layer and a thin-film transistor layer. A liquid crystal layer may be interposed between the color filter layer and the thin-film transistor layer. Column spacer structures may be used to maintain a desired gap for the liquid crystal layer between the color filter layer and the thin-film transistor layer. The column spacer structures may include column spacers having bases and opposing tips. The tips may penetrate into the liquid crystal layer and may bear against the thin-film transistor layer or aligned column spacer pads on the thin-film transistor layer. The color filter layer may have a glass substrate, a black matrix on the substrate, a color filter element layer on the black matrix, and an overcoat on the color filter element layer. Some or all of the column spacers may have bases that contact the black matrix layer.
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