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公开(公告)号:US20250160178A1
公开(公告)日:2025-05-15
申请号:US18983874
申请日:2024-12-17
Applicant: Apple Inc.
Inventor: Pan Hu , Jungwook Park , Wenzhong Liu , Zhijian Lu , Qingbing Wang , Jaeyi Chun , Cyrus Y Liu , Patrick Su , Chia Chun Yeh , Daming Xu , Mingxia Gu , Mookyung Son , Jun Qi , Victor H Yin
IPC: H10K59/80
Abstract: An electronic device may include display pixels and a display cover layer. The display cover layer may be formed from a transparent material such as glass. The display cover layer may have a nanotextured upper surface to improve the optical and mechanical characteristics of the display cover layer. The nanotextured upper surface may include first and second different types of nanostructures. The first type of nanostructures may have a relatively low aspect ratio and a first average height. The second type of nanostructures may be elongated nanostructures with a relatively high aspect ratio and a second average height that is greater than the first average height.
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公开(公告)号:US11982905B2
公开(公告)日:2024-05-14
申请号:US17203336
申请日:2021-03-16
Applicant: Apple Inc.
Inventor: David W. Lum , Kyung Wook Kim , Kwang Soon Park , Mingxia Gu , Jun Qi
IPC: G02F1/1335 , G02F1/13357 , G09G3/34 , H01L25/16 , H05B47/105 , H05B47/16
CPC classification number: G02F1/133612 , G02F1/133601 , G02F1/133603 , G02F1/133605 , G02F1/133606 , G02F1/133628 , G09G3/3426 , H01L25/167 , H05B47/105 , H05B47/16 , G09G2320/0626
Abstract: A pixel array may be illuminated with backlight illumination from a backlight. The backlight may include a two-dimensional array of light-emitting diodes, with each light-emitting diode being placed in a respective cell. Different light-emitting diodes may have unique brightness magnitudes based on the content of the given display frame. Driver integrated circuits may control one or more associated light-emitting diodes to have a desired brightness level. The driver integrated circuits may be formed in an active area of the backlight. The driver integrated circuits may be arranged in groups that are daisy chained together. A digital signal (that includes information such as addressing information) may be propagated through the group of driver integrated circuits. To manage thermal performance of the backlight, the backlight may include a thermally conductive layer and/or a heat sink structure. To increase the efficiency of the backlight, the backlight may include one or more reflective layers.
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公开(公告)号:US11428987B2
公开(公告)日:2022-08-30
申请号:US17203340
申请日:2021-03-16
Applicant: Apple Inc.
Inventor: Mingxia Gu , Jun Qi , Yanming Li , Jingdong Chen
IPC: G02F1/1335 , G02F1/13357 , H05B47/16 , H05B47/105 , H01L25/16 , G09G3/34
Abstract: A pixel array may be illuminated with backlight illumination from a backlight. The backlight may include a two-dimensional array of light-emitting diodes, with each light-emitting diode being placed in a respective cell. Different light-emitting diodes may have unique brightness magnitudes based on the content of the given display frame. Driver integrated circuits may control one or more associated light-emitting diodes to have a desired brightness level. The driver integrated circuits may be formed in an active area of the backlight. The driver integrated circuits may be arranged in groups that are daisy chained together. A digital signal (that includes information such as addressing information) may be propagated through the group of driver integrated circuits. To manage thermal performance of the backlight, the backlight may include a thermally conductive layer and/or a heat sink structure. To increase the efficiency of the backlight, the backlight may include one or more reflective layers.
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公开(公告)号:US20210364861A1
公开(公告)日:2021-11-25
申请号:US17203311
申请日:2021-03-16
Applicant: Apple Inc.
Inventor: David W. Lum , Jingdong Chen , Mingxia Gu , Jun Qi
IPC: G02F1/1335 , G02F1/13357
Abstract: A pixel array may be illuminated with backlight illumination from a backlight. The backlight may include a two-dimensional array of light-emitting diodes, with each light-emitting diode being placed in a respective cell. Different light-emitting diodes may have unique brightness magnitudes based on the content of the given display frame. Driver integrated circuits may control one or more associated light-emitting diodes to have a desired brightness level. The driver integrated circuits may be formed in an active area of the backlight. The driver integrated circuits may be arranged in groups that are daisy chained together. A digital signal (that includes information such as addressing information) may be propagated through the group of driver integrated circuits. To manage thermal performance of the backlight, the backlight may include a thermally conductive layer and/or a heat sink structure. To increase the efficiency of the backlight, the backlight may include one or more reflective layers.
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公开(公告)号:US20200335047A1
公开(公告)日:2020-10-22
申请号:US16418748
申请日:2019-05-21
Applicant: Apple Inc.
Inventor: Duane M. Petrovich , Sean C. Chang , Tobias Jung , Pierre-Yves Emelie , Marc Albrecht , Chen Zheng , Andrei E. Toma , Kevin W. Sliech , Mingxia Gu , Wei H. Yao
IPC: G09G3/34 , G02F1/1335
Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated by a backlight unit that includes an array of light-emitting diodes. A backlight brightness selection circuit may select brightness values for the light-emitting diodes. The backlight brightness selection circuit may select the brightness values based on image data, based on brightness values used in previous image frames, based on device information, and/or based on sensor information. The backlight brightness selection circuit may select the backlight brightness levels to mitigate visible artifacts such as flickering and halo. The backlight levels selected by the backlight brightness selection may be modified by a power consumption compensation circuit. The power consumption compensation circuit may estimate the amount of power consumption required to operate the backlight using the target brightness levels and may modify the target brightness levels to meet maximum power consumption requirements.
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公开(公告)号:US10571744B1
公开(公告)日:2020-02-25
申请号:US16388496
申请日:2019-04-18
Applicant: Apple Inc.
Inventor: Sean C. Chang , Tobias Jung , Marc Albrecht , Abdeslam Hafidi , Jun Qi , Duane M. Petrovich , Mingxia Gu , Xiang Fang , Pierre-Yves Emelie , Wei H Yao
IPC: G02F1/1335 , G09G3/36 , G09G3/34
Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated by a backlight unit that includes an array of light-emitting diodes. A backlight brightness selection circuit may select brightness values for the light-emitting diodes. The backlight brightness selection circuit may select the brightness values based on image data, based on brightness values used in previous image frames, based on device information, and/or based on sensor information. The backlight brightness selection circuit may select the backlight brightness levels to mitigate visible artifacts such as flickering and halo. The backlight levels selected by the backlight brightness selection may be modified by a power consumption compensation circuit. The power consumption compensation circuit may estimate the amount of power consumption required to operate the backlight using the target brightness levels and may modify the target brightness levels to meet maximum power consumption requirements.
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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.
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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。
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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。
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公开(公告)号:US11740509B2
公开(公告)日:2023-08-29
申请号:US17203336
申请日:2021-03-16
Applicant: Apple Inc.
Inventor: David W. Lum , Kyung Wook Kim , Kwang Soon Park , Mingxia Gu , Jun Qi
IPC: G02F1/1335 , G02F1/13357 , H05B47/16 , H05B47/105 , H01L25/16 , G09G3/34
CPC classification number: G02F1/133612 , G02F1/133601 , G02F1/133603 , G02F1/133605 , G02F1/133606 , G02F1/133628 , G09G3/3426 , H01L25/167 , H05B47/105 , H05B47/16 , G09G2320/0626
Abstract: A pixel array may be illuminated with backlight illumination from a backlight. The backlight may include a two-dimensional array of light-emitting diodes, with each light-emitting diode being placed in a respective cell. Different light-emitting diodes may have unique brightness magnitudes based on the content of the given display frame. Driver integrated circuits may control one or more associated light-emitting diodes to have a desired brightness level. The driver integrated circuits may be formed in an active area of the backlight. The driver integrated circuits may be arranged in groups that are daisy chained together. A digital signal (that includes information such as addressing information) may be propagated through the group of driver integrated circuits. To manage thermal performance of the backlight, the backlight may include a thermally conductive layer and/or a heat sink structure. To increase the efficiency of the backlight, the backlight may include one or more reflective layers.
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