公开(公告)号：US10739638B2

公开(公告)日：2020-08-11

申请号：US16409688

申请日：2019-05-10

Applicant: Apple Inc.

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

IPC: G02F1/13 ,  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：US20190285950A1

公开(公告)日：2019-09-19

申请号：US16294723

申请日：2019-03-06

Applicant: Apple Inc.

Inventor： Rong Liu ,  Daming Xu ,  Joshua A. Spechler ,  Jun Qi ,  Victor H. Yin ,  Ling Han ,  Juan He ,  Ziruo Hong ,  Mookyung Son ,  Heesang Suh ,  Xinyu Zhu

IPC: 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：US20230361153A1

公开(公告)日：2023-11-09

申请号：US18180758

申请日：2023-03-08

Applicant: Apple Inc.

Inventor： Ziruo Hong ,  Ganghun Kim ,  Jun Qi ,  Rong Liu ,  Saijin Liu ,  Tongbi T. Jiang ,  Victor H. Yin

IPC: H01L27/15 ,  H01L33/00 ,  H01L33/06 ,  H01L33/58

CPC classification number: H01L27/156 ,  H01L33/0066 ,  H01L33/06 ,  H01L33/58 ,  H01L2933/0091 ,  H01L2933/0058

Abstract: An electronic device may have one or more displays that produce images for a user. The display may include an array of light-emitting diodes. Each light-emitting diode in the array of light-emitting diodes may include a plurality of vias. The vias may be arranged in an array of rows and columns. The light-emitting diodes in the array may share a common cathode. The common cathode may include a conductive layer formed from a reflective material. The conductive layer may be formed in a grid that defines a plurality of openings for the light-emitting diodes or may be formed around the periphery of the array. The array may include light-emitting diodes of two different colors in a head-to-tail arrangement, connected in series, or that share a common cathode. The array may include light-emitting diodes of three different colors that are vertically stacked.

公开(公告)号：US11719978B2

公开(公告)日：2023-08-08

申请号：US17519221

申请日：2021-11-04

Applicant: Apple Inc.

Inventor： Zhenyue Luo ,  Meizi Jiao ,  Morteza Amoorezaei ,  Ling Han ,  Chungjae Lee ,  Ziruo Hong ,  Wei He ,  Rong Liu ,  Xinyu Zhu ,  Mingxia Gu ,  Jun Qi ,  Eric L. Benson ,  Victor H. Yin

IPC: G02F1/13357 ,  G02F1/1335 ,  G02F1/1333 ,  G06F1/16

CPC classification number: G02F1/133611 ,  G02F1/13338 ,  G02F1/133514 ,  G02F1/133603 ,  G02F1/133605 ,  G02F1/133606 ,  G02F1/133607 ,  G02F1/133608 ,  G02F1/133614 ,  G06F1/16 ,  G06F1/169 ,  G06F1/1662 ,  G02F2202/28

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 (LEDs) on a printed circuit board. The display may have a notch to accommodate an input-output component. Reflective layers may be included in the notch. The backlight may include a color conversion layer with a property that varies as a function of position. The light-emitting diodes may be covered by a slab of encapsulant with recesses in an upper surface.

公开(公告)号：US11333924B1

公开(公告)日：2022-05-17

申请号：US17409473

申请日：2021-08-23

Applicant: Apple Inc.

Inventor： Wei Lv ,  Pee Khiam So ,  Wenyong Zhu ,  Daming Xu ,  Victor H. Yin ,  Mookyung Son ,  Ryan A. Zimmerman ,  Ziruo Hong ,  Rong Liu ,  Jun Qi ,  Po Hsun Chen ,  Zhenbin Ge ,  Fei Yan ,  Wei He

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.

公开(公告)号：US11294236B2

公开(公告)日：2022-04-05

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: G02F1/133 ,  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：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：US20230361154A1

公开(公告)日：2023-11-09

申请号：US18180763

申请日：2023-03-08

Applicant: Apple Inc.

Inventor： Ziruo Hong ,  Ganghun Kim ,  Jun Qi ,  Rong Liu ,  Saijin Liu ,  Tongbi T Jiang ,  Victor H Yin

IPC: H01L27/15

CPC classification number: H01L27/156

Abstract: An electronic device may have one or more displays that produce images for a user. The display may include an array of light-emitting diodes. Each light-emitting diode in the array of light-emitting diodes may include a plurality of vias. The vias may be arranged in an array of rows and columns. The light-emitting diodes in the array may share a common cathode. The common cathode may include a conductive layer formed from a reflective material. The conductive layer may be formed in a grid that defines a plurality of openings for the light-emitting diodes or may be formed around the periphery of the array. The array may include light-emitting diodes of two different colors in a head-to-tail arrangement, connected in series, or that share a common cathode. The array may include light-emitting diodes of three different colors that are vertically stacked.

公开(公告)号：US10969628B1

公开(公告)日：2021-04-06

申请号：US15988978

申请日：2018-05-24

Applicant: Apple Inc.

Inventor： Erik A. Zweigle ,  Yu P. Sun ,  Ziruo Hong ,  Victor H. Yin ,  Eric L. Benson ,  Rong Liu ,  Mingxia Gu ,  Robert J. Durand ,  Wr Jamarulan Wr Ramli

IPC: G02F1/13357 ,  G02F1/1333 ,  G02F1/1335

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. The support posts may have opposing first and second ends. The first ends may be attached to the diffuser with fixed connections such as adhesive connections. The second ends may be attached to the printed circuit using floating connections.

公开(公告)号：US10901260B2

公开(公告)日：2021-01-26

申请号：US16294732

申请日：2019-03-06

Applicant: Apple Inc.

Inventor： Rong Liu ,  Jun Qi ,  Victor H. Yin ,  Wei Lv ,  Joshua A. Spechler ,  Yu P. Sun ,  Suraj P. Gorkhali ,  Daming Xu ,  Edward H. Kang ,  Wenyong Zhu ,  Ziruo Hong ,  Xinyu Zhu ,  Ling Han ,  Mookyung Son ,  Pee Khiam So ,  Janos C. Keresztes ,  Chenhua You ,  Zhenyue Luo ,  Heesang Suh ,  Juan He ,  Hung Sheng Lin

IPC: G02F1/13357 ,  H05K1/02 ,  H05K1/18 ,  H05K3/22 ,  H05K3/34 ,  F21K9/64 ,  H01L25/075 ,  H01L33/54 ,  H01L33/62 ,  H01L33/64 ,  F21Y115/10

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.