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：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.

公开(公告)号：US10852582B2

公开(公告)日：2020-12-01

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: G02F1/13357 ,  F21V8/00 ,  H05K1/11 ,  G02F1/1345 ,  H05K1/02 ,  H01R12/62 ,  H01R4/04 ,  G02F1/1368 ,  G02F1/133 ,  G09G3/00 ,  G09G3/36

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：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：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：US11009745B2

公开(公告)日：2021-05-18

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 ,  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.

公开(公告)号：US10571743B2

公开(公告)日：2020-02-25

申请号：US15688736

申请日：2017-08-28

Applicant: Apple Inc.

Inventor： Byungsoo Ko ,  Daming Xu ,  Heesang Suh ,  Michael Tom ,  Shin-Ying Lu ,  Thomas Mueller ,  Wenyong Zhu ,  Victor H. Yin ,  Mookyung Son

IPC: G02F1/1335 ,  F21V8/00

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.