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公开(公告)号：US20240345437A1
公开(公告)日：2024-10-17
申请号：US18613563
申请日：2024-03-22
Applicant: Meta Platforms Technologies, LLC
Inventor： Shenglin Ye , Xinyu Zhu , Xiangtong Li , Yu-Jen Wang , Yun-Han Lee , Linghui Rao
IPC: G02F1/13357 , G02F1/1335 , G02F1/1362
CPC classification number: G02F1/133611 , G02F1/133607 , G02F1/136222 , G02F1/136286
Abstract: A liquid crystal display (LCD) system for a head mounted display includes an LCD panel and a backlight unit. The LCD panel includes a color filter on array (COA) configuration. The backlight unit includes a light adjustment layer to adjust at least one characteristic of illumination light from a light source to tune the illumination light for enlarging an emission cone of display light.
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公开(公告)号：US20240345442A1
公开(公告)日：2024-10-17
申请号：US18630816
申请日：2024-04-09
Applicant: Meta Platforms Technologies, LLC
Inventor： Xiangtong Li , Xinyu Zhu , Yu-Jen Wang , Linghui Rao , Yun-Han Lee
IPC: G02F1/1343 , G06F1/16
CPC classification number: G02F1/134318 , G02F1/13439 , G06F1/163
Abstract: A liquid crystal pixel includes liquid crystals, a source electrode, and a transparent common electrode layer. The liquid crystals are configured to change an alignment of the liquid crystals in response to a voltage applied across the source electrode and the transparent common electrode layer. The slit in the transparent common electrode layer includes multiple angled sections.
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公开(公告)号：US12288531B2
公开(公告)日：2025-04-29
申请号：US18301629
申请日：2023-04-17
Applicant: Meta Platforms Technologies, LLC
Inventor： Haomiao Jiang , Linghui Rao , Tianxin Ning , Weihua Gao , Yongmin Park
Abstract: In particular embodiments, a computing system may receive receiving a first image frame of a sequence of image frames to be shown on a display having a plurality of backlight zones. The computing system may compute backlight unit statistics of the first image frame. The backlight unit statistics may represent grayscale levels for the plurality of backlight zones. The computing system may compute a global dimming gain for adjusting color values and backlight unit intensity of a second image frame of the sequence of image frames based on the backlight unit statistics of the first image frame. The computing system may adjust, using the global dimming gain, the color values and the backlight unit intensity of the second image frame.
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Patent Agency Ranking
公开(公告)号：US12038631B2
公开(公告)日：2024-07-16
申请号：US18063899
申请日：2022-12-09
Applicant: Meta Platforms Technologies, LLC
Inventor： Chulwoo Oh , Hsien-Hui Cheng , Xiaoze Ou , Linghui Rao
IPC: G02F1/03 , G02F1/13363 , G02F1/1337 , G02B27/01 , G02F1/1335 , G02F1/1343
CPC classification number: G02F1/0311 , G02F1/133636 , G02F1/133638 , G02F1/133749 , G02B27/0172 , G02F1/133531 , G02F1/134363
Abstract: A switchable waveplate includes a substrate, a first electrode layer on the substrate, an alignment layer on the first electrode layer and including alignment patterns formed thereon, a liquid crystal layer on the alignment layer, and a second electrode layer on the liquid crystal layer. The alignment patterns are determined based on angles of interest at a plurality of regions of the switchable waveplate. The liquid crystal layer includes liquid crystal molecules that are arranged according to the alignment patterns and are pre-tilted when no electric field is applied to the liquid crystal layer. The first electrode layer and the second electrode layer are configured to apply electric fields of different magnitudes to a plurality of zones of the switchable waveplate.
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公开(公告)号：US11783789B1
公开(公告)日：2023-10-10
申请号：US17744054
申请日：2022-05-13
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Linghui Rao , Alexander Klement
CPC classification number: G09G3/3426 , G02B27/0093 , G02B27/0172 , G02B2027/0178 , G09G2320/0646
Abstract: Embodiments of the present disclosure relate to a display assembly with dynamic brightness compensation. The display assembly includes a display element, a controller, and a backlight device. The controller obtains gaze information for a user's eye, generates emission instructions based at least in part on the gaze information, and dynamically assigns at least a portion of a plurality of light sources in the backlight device to a plurality of regions based at least in part on the gaze information. The light sources emit light through the display element, and the display element spatially modulates the light received from the backlight device to generate image light. Each subset of the light sources dynamically assigned to a respective region emits a portion of the light having brightness adjusted by a respective adjustment value in accordance with the emission instructions.
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公开(公告)号：US20240347013A1
公开(公告)日：2024-10-17
申请号：US18301629
申请日：2023-04-17
Applicant: Meta Platforms Technologies, LLC
Inventor： Haomiao Jiang , Linghui Rao , Tianxin Ning , Weihua Gao , Yongmin Park
CPC classification number: G09G3/3426 , G09G3/3607 , G09G2320/0646 , G09G2320/0666
Abstract: In particular embodiments, a computing system may receive receiving a first image frame of a sequence of image frames to be shown on a display having a plurality of backlight zones. The computing system may compute backlight unit statistics of the first image frame. The backlight unit statistics may represent grayscale levels for the plurality of backlight zones. The computing system may compute a global dimming gain for adjusting color values and backlight unit intensity of a second image frame of the sequence of image frames based on the backlight unit statistics of the first image frame. The computing system may adjust, using the global dimming gain, the color values and the backlight unit intensity of the second image frame.
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公开(公告)号：US11573445B2
公开(公告)日：2023-02-07
申请号：US17371840
申请日：2021-07-09
Applicant: Meta Platforms Technologies, LLC
Inventor： Linghui Rao , Samara Kate Sytsma , Jacques Gollier , Agnes Lee , Fenglin Peng
IPC: G02F1/1335
Abstract: A display device includes a plurality of pixels arranged across a display area of a display device, and a black matrix configured to block a portion of light outputted by each pixel of the plurality of pixels. The black matrix is configured to allow light from the second pixel having a first output intensity distribution having a peak intensity corresponding to a first direction to pass through, and to allow light from the first pixel having a second output intensity distribution having a peak intensity corresponding to a second direction to pass through.
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公开(公告)号：US20230011408A1
公开(公告)日：2023-01-12
申请号：US17371840
申请日：2021-07-09
Applicant: Meta Platforms Technologies, LLC
Inventor： Linghui Rao , Samara Kate Sytsma , Jacques Gollier , Agnes Lee , Fenglin Peng
IPC: G02F1/1335
Abstract: A display device includes a plurality of pixels arranged across a display area of a display device, and a black matrix configured to block a portion of light outputted by each pixel of the plurality of pixels. The black matrix is configured to allow light from the second pixel having a first output intensity distribution having a peak intensity corresponding to a first direction to pass through, and to allow light from the first pixel having a second output intensity distribution having a peak intensity corresponding to a second direction to pass through.
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