公开(公告)号：US11221512B2

公开(公告)日：2022-01-11

申请号：US16294731

申请日：2019-03-06

Applicant: Apple Inc.

Inventor： Rong Liu ,  Daming Xu ,  Jun Qi ,  Ling Han ,  Mookyung Son ,  Chenhua You ,  Victor H. Yin ,  Xinyu Zhu ,  Heesang Suh ,  Juan He ,  Joshua A. Spechler ,  Zhenyue Luo ,  Suraj P. Gorkhali

IPC: G02F1/13357 ,  H05K1/02 ,  H05K1/18 ,  H05K3/22 ,  H05K3/34 ,  F21K9/64 ,  H01L25/075 ,  H01L33/54 ,  H01L33/62 ,  H01L33/64 ,  F21Y115/10 ,  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 backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.

公开(公告)号：US20210364854A1

公开(公告)日：2021-11-25

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: G02F1/13357 ,  G02F1/1335 ,  H01L25/16 ,  H05B47/16 ,  H05B47/105

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.

公开(公告)号：US10911863B2

公开(公告)日：2021-02-02

申请号：US15613073

申请日：2017-06-02

Applicant: Apple Inc.

Inventor： Glenn K. Trainer ,  Rong Liu ,  Benjamin A. Cousins ,  Yupin Sun ,  Jun Qi ,  Jason W. Brinsfield ,  Ethan L. Huwe ,  Craig M. Stanley ,  Molly J. Anderson ,  Javier Mendez

IPC: F21V3/00 ,  F21V5/00 ,  F21V23/04 ,  F21V33/00 ,  H04R1/28 ,  G06F3/01 ,  H04R1/02 ,  H04R1/26 ,  H04R1/30 ,  H04R5/02 ,  H04R31/00 ,  H03K17/96 ,  H05K1/02 ,  G06F3/02 ,  G06F3/041 ,  G06F3/0354 ,  H04R3/00 ,  H04R7/12 ,  H04R7/18 ,  H04R9/02 ,  H04R9/06 ,  H04R1/40 ,  H04R3/12 ,  G06F3/16 ,  G06F3/044 ,  H01H13/02 ,  H05K1/14

Abstract: This disclosure relates to speakers and more specifically to an array speaker for distributing music uniformly across a room. A number of audio drivers can be radially distributed within a speaker housing so that an output of the drivers is distributed evenly throughout the room. In some embodiments, the exit geometry of the audio drivers can be configured to bounce off a surface supporting the array speaker to improve the distribution of music throughout the room. The array speaker can include a number of vibration isolation elements distributed within a housing of the array speaker. The vibration isolation elements can be configured reduce the strength of forces generated by a subwoofer of the array speaker.

公开(公告)号：US20200292885A1

公开(公告)日：2020-09-17

申请号：US16891386

申请日：2020-06-03

Applicant: Apple Inc.

Inventor： Rong Liu ,  Yu P. Sun ,  Erik A. Zweigle ,  Jun Qi ,  Victor H. Yin ,  Ziruo Hong ,  Sungwon Bae

IPC: G02F1/13357 ,  F21K9/64 ,  F21K9/68 ,  G09G3/34 ,  G09G3/36

Abstract: An electronic device may have a display with a backlight. The backlight provides backlight illumination for an array of pixels that is displaying images. The backlight may include an array of cells. Each cell may contain a light source with one or more light-emitting diodes and a cavity reflector that reflects light from the light source outwardly through a diffuser for use in forming the backlight illumination. The light sources may be mounted to a printed circuit. Support posts on the printed circuit may be used to maintain the diffuser at a fixed distance from the printed circuit. Sensors on the printed circuit may be used to measure separation distances between the printed circuit and diffuser. Adjustments to pixel gain profiles can be made based on the measured separation distances.

公开(公告)号：US10725228B2

公开(公告)日：2020-07-28

申请号：US16280925

申请日：2019-02-20

Applicant: Apple Inc.

Inventor： Hyungryul J. Choi ,  Zhibing Ge ,  Cheng Chen ,  Hossein Nemati ,  Wei Chen ,  Jun Qi ,  Khadijeh Bayat ,  David A. Doyle ,  John Z. Zhong

IPC: G02F1/13 ,  F21V8/00 ,  G02F1/13357 ,  G02F1/1334 ,  G02F1/29 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/139 ,  G02F1/137

Abstract: An electronic device may generate content that is to be displayed on a display. The display may have an array of liquid crystal display pixels for displaying image frames of the content. The display may be operated in at least a normal viewing mode, a privacy mode, an outdoor viewing mode, and a power saving mode. The different view modes may exhibit different viewing angles. In one configuration, the display may include a backlight unit that generates a collimated light source and that includes a switchable diffuser film for selectively scattering the collimated light source depending on the current viewing mode of the display. In another configuration, the display may include a backlight unit that generates a scattered light source that includes a switchable microarray structure such as a switchable mirror structure or a tunable microlens array for selectively collimating the scattered light source depending on the current viewing mode.

公开(公告)号：US20200075683A1

公开(公告)日：2020-03-05

申请号：US16437979

申请日：2019-06-11

Applicant: Apple Inc.

Inventor： Aleksandr N. Polyakov ,  Meng-Huan Ho ,  Yi Huang ,  Yi Qiao ,  David S. Hum ,  Jean-Pierre S. Guillou ,  Yanming Li ,  Jun Qi ,  KiBeom Kim ,  Kwang Ohk Cheon ,  Cheng Chen ,  Rui Liu ,  ByoungSuk Kim ,  Ying-Chih Wang ,  Hung Sheng Lin ,  Donghee Nam ,  Tyler R. Kakuda ,  Takahide Ishii ,  Yurii Morozov

IPC: H01L27/32 ,  H01L51/52 ,  G06F3/041 ,  G06F3/044

Abstract: Display structures for controlling viewing angle color shift are described. In various embodiments, polarization sensitive diffusers, independent controlled cathode thicknesses, filtermasks, touch detection layers, and color filters are described.

公开(公告)号：US10288788B2

公开(公告)日：2019-05-14

申请号：US15451223

申请日：2017-03-06

Applicant: Apple Inc.

Inventor： Cheng Chen ,  Masato Kuwabara ,  Christopher L. Boitnott ,  Jun Qi ,  Nathan K. Gupta ,  Victor H. Yin ,  John Z. Zhong

IPC: G02B1/14 ,  G02B5/30 ,  G02B1/18 ,  G02F1/1335 ,  G02B1/11 ,  G02F1/1333

Abstract: Electronic devices may be provided with displays that have polarizers. A polarizer may have a polymer layer that has a portion covered with a dichroic dye to form a polarized region and a portion that is free of dichroic dye to form an unpolarized region. The unpolarized region may be formed by masking the polymer layer during a dye coating process. Masks may be formed from polymers. The shape of the mask may define the shape of the unpolarized region. The mask may be left in place within the polarizer or may be removed from the polarizer during fabrication. Unpolarized regions may also be formed by light bleaching, chemical bleaching, and material removal techniques. Bleached areas may be chemically stabilized. A moisture barrier layer may be incorporated into the polarizer to help prevent the unpolarized region from reverting to a polarized state.

公开(公告)号：US10031367B2

公开(公告)日：2018-07-24

申请号：US13628811

申请日：2012-09-27

Applicant: Apple Inc.

Inventor： Victor H. Yin ,  Jun Qi ,  Dinesh C. Mathew ,  Shih-Chang Chang ,  Cheng Chen ,  John Z. Zhong ,  Wei Chen ,  Adam T. Garelli ,  Bryan W. Posner ,  Christiaan A. Ligtenberg

IPC: G02F1/1335 ,  G02F1/1362 ,  G02F1/1345 ,  G02F1/1333

Abstract: An electronic device may be provided with a display that has a layer of liquid crystal material interposed between a color filter layer and a thin-film-transistor layer. The thin-film-transistor layer may have a substrate with an upper surface and a lower surface. A circular polarizer may be formed on the upper surface. Thin-film transistor circuitry such as gate driver circuitry may be formed on the lower surface. A display driver circuit may be mounted on an inactive border region of the lower surface of the thin-film transistor substrate. Display pixels may form an array in a central active region of the display. A grid of metal gate and data lines may distribute signals from the display driver circuit and gate driver circuitry to the display pixels. A grid of non-reflecting lines may be interposed between the grid of metal lines and the lower surface.

公开(公告)号：US09971084B2

公开(公告)日：2018-05-15

申请号：US15014596

申请日：2016-02-03

Applicant: Apple Inc.

Inventor： Robert Y. Cao ,  Craig C. Leong ,  Bradford J. Zercoe ,  Dinesh C. Mathew ,  Mahesh Krishnamurthi ,  Jun Qi ,  Rong Liu ,  Victor H. Yin

IPC: F21V8/00 ,  G06F1/16 ,  H01H13/02 ,  H01H13/14 ,  H01H13/7065 ,  H01H13/83

CPC classification number: G02B6/0061 ,  G02B6/0038 ,  G02B6/0045 ,  G06F1/1662 ,  H01H13/023 ,  H01H13/14 ,  H01H13/7065 ,  H01H13/83 ,  H01H2219/056 ,  H01H2219/06 ,  H01H2219/062 ,  H01H2219/0622

Abstract: Described is an illumination structure for a key of a keyboard. The illumination structure is used to uniformly illuminate the key and any glyphs that are present on the key. The illumination structure includes a light guide having various features that increase total internal reflection and also illuminate the glyphs of the key.

公开(公告)号：US09952642B2

公开(公告)日：2018-04-24

申请号：US14500646

申请日：2014-09-29

Applicant: APPLE INC.

Inventor： Chaohao Wang ,  Louis Luh ,  Jun Qi ,  Cheng Chen ,  Jun Jiang ,  Paolo Sacchetto ,  Marc Albrecht

IPC: G09G3/20 ,  G06F1/32 ,  G09G5/00

CPC classification number: G06F1/32 ,  G09G5/003 ,  G09G2320/0247 ,  G09G2330/021 ,  G09G2340/0435 ,  G09G2360/16

Abstract: Systems and methods for operating a display by dynamically determining a refresh rate for the display. In certain implementations, a processor determines a number of pixels having medium grayscale levels from a histogram for the image. If the number does not exceed a threshold, the processor sets a refresh rate for the display to a first refresh rate. In certain implementations, if the number exceeds a threshold, the processor may set the refresh rate for the display to a second refresh rate. Moreover, the first refresh rate may be lower than the second threshold. In some implementations, the image may be analyzed by subdividing the image into blocks and determining a refresh rate based on grayscale levels or distributions in the blocks. Based on the analysis of the blocks, a corresponding refresh rate may be selected.