公开(公告)号：US10802336B2

公开(公告)日：2020-10-13

申请号：US16294715

申请日：2019-03-06

Applicant: Apple Inc.

Inventor： Rong Liu ,  Ling Han ,  Daming Xu ,  Janos C. Keresztes ,  Joshua A. Spechler ,  Jun Qi ,  Victor H. Yin ,  Yu P. Sun ,  Ziruo Hong ,  Wei Lv ,  Suraj P. Gorkhali ,  Mookyung Son

IPC: G02F1/1335 ,  F21K9/64 ,  G02F1/13357 ,  H05K1/02 ,  H05K1/18 ,  H05K3/22 ,  H05K3/34 ,  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.

公开(公告)号：US20190285941A1

公开(公告)日：2019-09-19

申请号：US16294715

申请日：2019-03-06

Applicant: Apple Inc.

Inventor： Rong Liu ,  Ling Han ,  Daming Xu ,  Janos C. Keresztes ,  Joshua A. Spechler ,  Jun Qi ,  Victor H. Yin ,  Yu P. Sun ,  Ziruo Hong ,  Wei Lv ,  Suraj P. Gorkhali ,  Mookyung Son

IPC: G02F1/1335 ,  F21K9/64

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：US20180307100A1

公开(公告)日：2018-10-25

申请号：US15974590

申请日：2018-05-08

Applicant: Apple Inc.

Inventor： Daming Xu ,  Heesang Suh ,  Mookyung Son ,  Wenyong Zhu ,  Victor H. Yin

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/1337

CPC classification number: G02F1/133603 ,  G02B6/0031 ,  G02F1/133504 ,  G02F1/133711

Abstract: A display may have a backlight unit that provides backlight illumination. The backlight unit may include a light guide that distributes light through the display. Light-emitting diodes may emit light into the light guide. A reflector that is overlapped by the light guide may help reflect light upwards through an array of pixels. The backlight unit may have a chassis that receives the reflector, light guide, light-emitting diodes, and optical films such as diffusers and prism films. Optical and mechanical features in the backlight unit may enhance color and intensity uniformity for the backlight illumination and may help enhance durability.

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：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：US20200132916A1

公开(公告)日：2020-04-30

申请号：US16439419

申请日：2019-06-12

Applicant: Apple Inc.

Inventor： Wenyong Zhu ,  Shan-Ting Hsu ,  Victor H. Yin ,  Daming Xu ,  Heesang Suh ,  Chenhua You ,  Mookyung Son

IPC: F21V8/00 ,  H05K1/11

Abstract: An electronic device may include display layers such as liquid crystal display layers and a backlight unit that provides illumination for the display layers. The backlight unit may include light-emitting diodes that emit light into the edge of a light guide film. To minimize the inactive area of the display, the light-emitting diodes may be tightly spaced to approximate a line light source instead of point light sources. Color and/or luminance compensation layers may be incorporated at various locations within the backlight structures to ensure that the backlight provided to the display layers is homogenous. A thin-film transistor layer of the display may be coupled to a printed circuit board by a flexible printed circuit. The flexible printed circuit may have additional solder mask layers to improve robustness, may include encapsulation, and may have traces with a varying pitch.

公开(公告)号：US10467982B2

公开(公告)日：2019-11-05

申请号：US15658312

申请日：2017-07-24

Applicant: Apple Inc.

Inventor： Mahnaz Mohammadi ,  Adria Fores Herranz ,  Marc Albrecht ,  Alexander P. Yu ,  Ross Thompson ,  Daming Xu ,  Suraj P. Gorkhali ,  Heesang Suh ,  Mookyung Son ,  Victor H. Yin ,  Judith C. Segura ,  Mingkun Li ,  Jay Mayur Khandhar

IPC: G09G5/04 ,  G09G5/06 ,  G01K13/00 ,  G01K1/02 ,  G09G3/20 ,  G09G3/36 ,  F21V8/00

Abstract: An electronic device has a display with a pixel array overlapping an array of temperature sensors. Control circuitry in the device may gather temperature measurements from the temperature sensor array. The control circuitry may apply a global offset to the temperature measurements and may apply a damping factor to the globally offset measurements to produce a two-dimensional temperature profile for the display. A look-up table or other data structure may be used to store information on pixel color correction gain values as a function of temperature. This temperature-gain information and temperature information from the two-dimensional temperature profile may be used by display circuitry in the device to display color-corrected images on the display.

公开(公告)号：US20180286349A1

公开(公告)日：2018-10-04

申请号：US15658312

申请日：2017-07-24

Applicant: Apple Inc.

Inventor： Mahnaz Mohammadi ,  Adria Fores Herranz ,  Marc Albrecht ,  Alexander P. Yu ,  Ross Thompson ,  Daming Xu ,  Suraj P. Gorkhali ,  Heesang Suh ,  Mookyung Son ,  Victor H. Yin ,  Judith C. Segura ,  Mingkun Li ,  Jay Mayur Khandhar

IPC: G09G5/04 ,  G09G5/06 ,  G01K13/00

CPC classification number: G09G5/04 ,  G01K1/026 ,  G01K13/00 ,  G02B6/004 ,  G09G3/20 ,  G09G3/3607 ,  G09G5/06 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/041 ,  G09G2320/0666 ,  G09G2320/0693

Abstract: An electronic device has a display with a pixel array overlapping an array of temperature sensors. Control circuitry in the device may gather temperature measurements from the temperature sensor array. The control circuitry may apply a global offset to the temperature measurements and may apply a damping factor to the globally offset measurements to produce a two-dimensional temperature profile for the display. A look-up table or other data structure may be used to store information on pixel color correction gain values as a function of temperature. This temperature-gain information and temperature information from the two-dimensional temperature profile may be used by display circuitry in the device to display color-corrected images on the display.

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.

公开(公告)号：US11592706B2

公开(公告)日：2023-02-28

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.