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    Displays with Ramped Light Guide Layers and Multidirectional Light-Emitting Diodes
    22.
    发明申请
    Displays with Ramped Light Guide Layers and Multidirectional Light-Emitting Diodes 审中-公开

    公开(公告)号：US20170371087A1

    公开(公告)日：2017-12-28

    申请号：US15260904

    申请日：2016-09-09

    Applicant: Apple Inc.

    Inventor： Chenhua You ,  Abdeslam Hafidi ,  Jun Qi ,  Mingxia Gu ,  Victor H. Yin

    IPC: F21V8/00 ,  G02F1/1335 ,  G06F3/041 ,  G02F1/1368 ,  G02F1/1333

    CPC classification number: G02B6/0021 ,  G02B6/00 ,  G02B6/0016 ,  G02B6/0068 ,  G02B6/0073 ,  G02B6/0078

    Abstract: A display such as a liquid crystal display may have an array of pixels that is illuminated using backlight illumination from a backlight. The backlight may have a light guide plate that distributes light from light-emitting diodes across the display. The light-emitting diodes may be overlapped by the light guide plate and may emit light into portions of the light guide plate that have ramped profiles. Light-emitting diodes for the backlight may have multiple light-emitting diode dies mounted on common package substrates. Reflective walls may be formed between the light-emitting diode dies on a substrate. Phosphor may cover the dies. The light-emitting diodes may contain four light-emitting diode dies that emit light in four different directions. Two or more of the dies may emit light of different colors. Light may be emitted into the corners of rectangular light distribution regions of a light guide plate.

    COATINGS TO ELIMINATE LED HOT SPOTS
    24.
    发明申请
    COATINGS TO ELIMINATE LED HOT SPOTS 审中-公开
    涂层消除LED热点

    公开(公告)号：US20140036538A1

    公开(公告)日：2014-02-06

    申请号：US13665678

    申请日：2012-10-31

    Applicant: APPLE INC.

    Inventor： Chenhua You ,  Jean-Jacques P. Drolet

    IPC: G09F13/04 ,  F21V8/00 ,  H01J9/24 ,  B82Y20/00

    CPC classification number: G09F13/0409 ,  B82Y20/00

    Abstract: A display that contains a backlight that incorporates an optical coating either on or above the light guide in order to reduce the appearance of optical hotspots on the display is provided. The optical coating can be patterned to correspond to the position of each light emitting diode in the display and can be made, as an example, from either reflective, diffusive or dichroic material. The coating can work to overcome the hotspots created by insufficient light mixing distance in the backlight.

    Abstract translation: 提供了一种包含背光源的显示器，其包括在光导上或上方的光学涂层，以便减少显示器上的光热点的外观。 光学涂层可以被图案化以对应于显示器中每个发光二极管的位置，并且可以作为示例从反射，扩散或二向色材料制成。 该涂层可以克服背光源中不足的光混合距离所产生的热点。

    Displays with Direct-lit Backlight Units
    26.
    发明申请
    Displays with Direct-lit Backlight Units 有权

    公开(公告)号：US20220334432A1

    公开(公告)日：2022-10-20

    申请号：US17409467

    申请日：2021-08-23

    Applicant: Apple Inc.

    Inventor： Daming Xu ,  Yufeng Yan ,  Qingbing Wang ,  Chenhua You ,  Rong Liu ,  Jun Qi ,  Zhenyue Luo ,  Mookyung Son ,  Victor H. Yin

    IPC: G02F1/13357 ,  G02F1/1335

    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 direct-lit backlight unit. The backlight unit may include an array of light-emitting diodes on a printed circuit board. The backlight unit may include first, second, and third light spreading layers formed over the array of light-emitting diodes. A color conversion layer may be formed over the first, second, and third light spreading layers. First and second brightness enhancement films may be formed over the color conversion layer.

    Display having backlight with narrowband collimated light sources
    27.
    发明授权
    Display having backlight with narrowband collimated light sources 有权

    公开(公告)号：US09719639B2

    公开(公告)日：2017-08-01

    申请号：US14564456

    申请日：2014-12-09

    Applicant: Apple Inc.

    Inventor： Mingxia Gu ,  Chenhua You ,  Jun Qi ,  Yanming Li ,  Young Cheol Yang ,  Jean-Jacques Drolet ,  Wei Chen ,  Victor H. Yin

    IPC: G02F1/1335 ,  F21K9/60

    CPC classification number: F21K9/60 ,  G02F1/133617

    Abstract: A display has an array of display pixels formed from display layers such as one or more polarizer layers, a substrate on which an array of display pixel elements such as color filter elements and downconverter elements are formed, a liquid crystal layer, and a thin-film transistor layer that includes display pixel electrodes and display pixel thin-film transistors for driving control signals onto the display pixel electrodes to modulate light passing through the display pixels. A light source such as one or more laser diodes or light-emitting diodes may be used to generate light for the display. The light may be launched into the edge of a polymer layer or other light guide plate structure. A light guide plate may include phase-matched structures such as holographically recorded gratings or photonic lattices that direct the light upwards through the array of display pixels.

    Display With Backlight and Temperature Color Compensation
    28.
    发明申请
    Display With Backlight and Temperature Color Compensation 有权
    显示背光和温度色彩补偿

    公开(公告)号：US20160335958A1

    公开(公告)日：2016-11-17

    申请号：US14918402

    申请日：2015-10-20

    Applicant: Apple Inc.

    Inventor： Yi Huang ,  Chenhua You ,  Gabriel Marcu ,  Jun Qi ,  Marc Albrecht

    IPC: G09G3/34 ,  F21V8/00 ,  G09G3/36 ,  G02F1/1335

    CPC classification number: G09G3/3413 ,  G02B6/0073 ,  G02F1/133603 ,  G02F1/133621 ,  G02F2001/133601 ,  G02F2001/133614 ,  G02F2202/36 ,  G02F2203/21 ,  G02F2203/60 ,  G09G3/3607 ,  G09G3/3611 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/041 ,  G09G2320/0646 ,  G09G2360/16

    Abstract: An electronic device may have a display such as a liquid crystal display. The display may have an array of pixels that display images to a user. Backlight structures may provide the array of pixels with backlight illumination at a backlight illumination level. The backlight structures may have a light source with an array of light-emitting diodes and photoluminescent material that is pumped by pump light from the light-emitting diodes. The backlight illumination may experience color variations as a function of the backlight illumination level. Circuitry in the electronic device may be used to implement a backlight level color compensator. The backlight level color compensator may apply color correction factors to the image data of the displayed images to compensate for variations in color of the image data due to variations in backlight illumination level and operating temperature.

    Abstract translation: 电子设备可以具有诸如液晶显示器的显示器。 显示器可以具有向用户显示图像的像素阵列。 背光结构可以在背光照明级别提供具有背光照明的像素阵列。 背光结构可以具有通过泵浦光从发光二极管泵浦的发光二极管和光致发光材料的阵列的光源。 背光照明可以经历作为背光照明水平的函数的颜色变化。 电子设备中的电路可以用于实现背光级颜色补偿器。 背光级颜色补偿器可以对所显示的图像的图像数据应用颜色校正因子，以补偿由于背光照明水平和操作温度的变化引起的图像数据的颜色变化。

    Display with Structures for Reducing Blue Edge Effects
    29.
    发明申请
    Display with Structures for Reducing Blue Edge Effects 有权
    显示与减少蓝色边缘效果的结构

    公开(公告)号：US20150355399A1

    公开(公告)日：2015-12-10

    申请号：US14494555

    申请日：2014-09-23

    Applicant: Apple Inc.

    Inventor： Chenhua You ,  Jun Qi ,  Sheng Min Wang ,  Victor H. Yin

    IPC: F21V8/00 ,  G02F1/1335

    CPC classification number: G02B6/005 ,  G02B6/0055 ,  G02B6/0068 ,  G02B6/0073 ,  G02F1/133512 ,  G02F1/133615 ,  G02F1/133617 ,  G02F2001/133614 ,  G02F2001/133624

    Abstract: Display backlight structures may provide backlight illumination that passes through display layers in the display. Light-emitting diodes may emit blue light into an edge of a light guide plate. Optical films may overlap the light guide plate. The optical films may include a quantum dot enhancement film. A peripheral strip of yellow reflector or other light control structures may be incorporated into the backlight structures to reduce blue edge effects. The light control structures may have features with a spatially varying density, may be formed from quantum dot enhancement film, or may be formed form other structures. The light control structures may be formed on the surfaces of the optical films, on a reflective layer under the light guide plate, or on a surface of a mold frame or other structure that lies in a plane parallel to the plane of the light guide plate.

    Abstract translation: 显示器背光结构可以提供穿过显示器中的显示层的背光照明。 发光二极管可以将蓝光发射到导光板的边缘。 光学膜可能与导光板重叠。 光学膜可以包括量子点增强膜。 黄色反射器或其他光控制结构的外围条可以并入背光结构中以减少蓝色边缘效应。 光控制结构可以具有空间变化密度的特征，可以由量子点增强膜形成，或者可以由其它结构形成。 光控制结构可以形成在光学膜的表面上，在导光板下面的反射层上，或者在与平行于导光板的平面的平面中的模架或其他结构的表面上 。

    BACKLIGHT DIMMING CONTROL FOR A DISPLAY UTILIZING QUANTUM DOTS
    30.
    发明申请
    BACKLIGHT DIMMING CONTROL FOR A DISPLAY UTILIZING QUANTUM DOTS 审中-公开
    用于使用量子点的显示器的背光调光控制

    公开(公告)号：US20140035960A1

    公开(公告)日：2014-02-06

    申请号：US13665616

    申请日：2012-10-31

    Applicant: APPLE INC.

    Inventor： Chenhua You ,  Jean-Jacques P. Drolet

    IPC: G09G5/10 ,  G09G3/36

    CPC classification number: G09G3/3413 ,  G09G2320/0242 ,  G09G2320/045 ,  G09G2320/064 ,  G09G2330/021

    Abstract: Quantum dot backlights for use in displays and processes for controlling the dimming of quantum dot backlights are provided. The backlight can include an LED (e.g., a blue LED) configured to emit a light through a sheet of quantum dots. The quantum dots can be configured to emit colored light (e.g., red and green light) in response to the light emitted from the LED. To control the relative luminance of the LED, the backlight can be controlled through the use of current dimming to adjust the brightness of the LED at high relative luminance settings to increase the light output efficiency and can include the use of pulse width modulation to adjust the brightness of the LED at low relative luminance settings to reduce the amount of wavelength shift experienced by the LED.

    Abstract translation: 提供了用于控制量子点背光调光的显示器和过程中的量子点背光。 背光源可以包括被配置为通过一束量子点发射光的LED（例如，蓝色LED）。 量子点可以被配置为响应于从LED发射的光而发出彩色光（例如，红色和绿色光）。 为了控制LED的相对亮度，可以通过使用电流调光来控制背光，以在高相对亮度设置下调节LED的亮度，以增加光输出效率，并且可以包括使用脉宽调制来调整 LED的亮度在相对亮度低的设置下可以减少LED发生的波长偏移量。

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