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    Optical film, backlight and display system
    1.
    发明授权
    Optical film, backlight and display system 有权

    公开(公告)号：US12271080B2

    公开(公告)日：2025-04-08

    申请号：US18715302

    申请日：2022-12-02

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Gilles J. Benoit ,  Lin Zhao ,  Matthew B. Johnson

    IPC: G02F1/00 ,  G02F1/1335 ,  G02F1/13357

    Abstract: An optical film includes a plurality of first layers disposed on a plurality of polymeric second layers. Each of at least 30% of the first layers includes at least 30% by weight of an inorganic material. For a substantially normally incident light, a blue wavelength range extending from about 420 mn to about 480 m, a green wavelength range extending from about 490 nm to about 560 in, and a red wavelength range extending from about 590 nm to about 670 nm, the optical film and the plurality of second layers have respective average optical reflectances Rof(b) and R2(b) in the blue wavelength range, Rof(g) and R2(g) in the green wavelength range, and Rof(r) and R2(r) in the red wavelength range, where 0≤Rof(b)−R2(b)≤25%; Rof(g)−R2(g)>30%; and each of Rof(r) and R2(r) is greater than about 60% and |Rof(r)−R2(r)| is less than about 20%.

    Optical film and glass laminate
    2.
    发明授权
    Optical film and glass laminate 有权

    公开(公告)号：US12117636B2

    公开(公告)日：2024-10-15

    申请号：US17439011

    申请日：2020-04-01

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Adam D. Haag ,  Brianna N. Wheeler ,  Matthew B. Johnson ,  William F. Edmonds

    IPC: G02B5/30

    CPC classification number: G02B5/305 ,  G02B5/3066 ,  G02B5/3083

    Abstract: An optical film includes a plurality of alternating first and second layers. The first layers have a first in-plane birefringence, the second layers have a second in-plane birefringence, and the second in-plane birefringence is less than the first in-plane birefringence and greater than 0.03. The first layers may include polyethylene terephthalate homopolymer and the second layers may include glycol-modified co(polyethylene terephthalate). The optical film has a shrinkage along a first direction of greater than 4% and a shrinkage along an orthogonal second direction of greater than 3% when heated at 150° C. for 15 minutes. A glass laminate is prepared by disposing the optical film between glass layers and laminating the optical film to the glass layers.

    Multilayer optical film
    3.
    发明授权
    Multilayer optical film 有权

    公开(公告)号：US12072519B2

    公开(公告)日：2024-08-27

    申请号：US17605683

    申请日：2020-05-20

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Adam D. Haag ,  William B. Black ,  Robert M. Biegler ,  Matthew B. Johnson ,  Edward J. Kivel

    IPC: G02B5/30 ,  B32B7/02

    CPC classification number: G02B5/305 ,  B32B7/02 ,  G02B5/3083

    Abstract: A multilayer optical film includes a plurality of polymeric layers arranged sequentially adjacent to each other. A difference in thickness between spaced apart first and second polymeric layers in the plurality of polymeric layers is less than about 10%. Each polymeric layer that is disposed between the first and second polymeric layers has a thickness less than about 400 nm. Each layer in a group of at least three polymeric layers in the plurality of polymeric layers that are disposed between the first and second polymeric layers has a thickness greater than an average thickness of the first and second polymeric layers by about 20% to about 500%. The group of at least three polymeric layers includes at least one pair of immediately adjacent polymeric layers.

    Polarizer and display including same
    4.
    发明授权
    Polarizer and display including same 有权

    公开(公告)号：US12022684B2

    公开(公告)日：2024-06-25

    申请号：US17275330

    申请日：2018-09-14

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Fuguo Xu ,  Timothy J. Nevitt ,  Adam D. Haag ,  Brianna N. Nieson ,  Matthew B. Johnson ,  Martin E. Denker

    IPC: H10K50/86 ,  G02B5/30 ,  H10K59/35

    CPC classification number: H10K50/86 ,  G02B5/3041 ,  H10K59/351

    Abstract: A display (1000) including a display panel (130) and a polarizer (110) disposed to receive a light (150) output of the display panel (130) is described. The polarizer (150) may be a reflective polarizer (110) or a circular polarizer (100) incorporating a reflective polarizer (110). The display panel (130) includes a plurality of pixels and each pixel includes a plurality of subpixels. The reflective polarizer (110) has a first reflection band, wherein at normal incidence, the first reflection band has a long wavelength band edge wavelength between peak emission wavelengths of two subpixels in the plurality of subpixels. The reflective polarizer (110) may be disposed between an absorbing polarizer (106) and a retarder (108) in a circular polarizer (100). The reflective polarizer (110) may have substantially non-overlapping first, second, and third reflection bands.

    Multilayer Optical Film and Glass Laminate Including Same
    5.
    发明公开
    Multilayer Optical Film and Glass Laminate Including Same 审中-公开

    公开(公告)号：US20240192415A1

    公开(公告)日：2024-06-13

    申请号：US18552250

    申请日：2022-03-03

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Lin Zhao ,  Gilles J. Benoit ,  Matthew B. Johnson ,  Raghunath Padiyath ,  Edward J. Kivel

    IPC: G02B5/28

    CPC classification number: G02B5/282

    Abstract: A multilayer optical film includes a plurality of optical repeat units where each of the optical repeat units includes at least individual first and second layers. The first and second layers in each of the optical repeat units have respective indices of refraction n1 and n2 and corresponding respective f-ratios f1 and f2 along a same in-plane first direction for a same first visible wavelength in a visible wavelength range extending from about 420 nm to about 680 nm, where n1>n2, and one of f1 and f2 is between about 0.55 and about 0.80. For illuminant D65 light incident on the multilayer optical film, the multilayer optical film reflects and transmits the incident light with the reflected and transmitted lights having color shifts below specified limits in a CIE L*a*b* color space. A glass laminate includes the multilayer optical film disposed between glass layers.

    Display optical film and backlight unit
    6.
    发明授权
    Display optical film and backlight unit 有权

    公开(公告)号：US11829024B2

    公开(公告)日：2023-11-28

    申请号：US17435203

    申请日：2020-02-18

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Gilles J. Benoit ,  Carl A. Stover ,  Matthew B. Johnson ,  Ryan T. Fabick ,  Quinn D. Sanford

    IPC: G02F1/1335 ,  G02F1/13357

    CPC classification number: G02F1/133533 ,  G02F1/133605

    Abstract: An optical stack for reflecting and transmitting light in a predetermined wavelength range includes stacked first and second optical films, the predetermined wavelength range defining a first wavelength range and a remaining wavelength range. For normally incident light and for each wavelength in a first wavelength range, the first optical film substantially reflects light having a first polarization state, and substantially transmits light having a second polarization state. For each of the first and second polarization states, for wavelengths in the first wavelength range, the second optical film has a maximum optical transmittance Tmax for light incident at a first incident angle, and an optical transmittance Tmax/2 for light incident at a second incident angle, where the second incident angle is greater than the first incident angle by less than about 50 degrees. For wavelengths in the remaining wavelength range, the second optical film reflects at least 80% of light.

    Backlight for an image forming device comprising an optical cavity formed by opposing cold and hot mirrors
    7.
    发明授权
    Backlight for an image forming device comprising an optical cavity formed by opposing cold and hot mirrors 有权

    公开(公告)号：US11487159B2

    公开(公告)日：2022-11-01

    申请号：US17419901

    申请日：2020-01-06

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Quinn D. Sanford ,  Matthew B. Johnson ,  Ryan T. Fabick ,  Nathaniel K. Naismith

    IPC: G02F1/13357 ,  G02F1/1335

    Abstract: A backlight (100) for an image forming device (70) includes spaced-apart front and back optical reflectors (20, 10) defining an optical cavity (18) therebetween, and at least one light source (15) for emitting light into the optical cavity. The front optical reflector (20) is disposed between the image forming device and the back optical reflector (10). For substantially normally incident light and for non-overlapping first (e.g. visible light) and second (e.g. infrared) wavelength ranges, the front optical reflector (20) may transmit (80c) at least 70% of light (80a) for each wavelength in the first wavelength range, and may reflect (90b) at least 70% of light (90a) for each wavelength in the second wavelength range. The back optical reflector (10) may reflect (80b) at least 70% of light for each wavelength in the first wavelength range, and may transmit (90c) at least 70% of light (90b) for each wavelength in the second wavelength range. The light (80a, 90a) emitted by the at least one light source (15) has at least one wavelength in the first wavelength range and at least one wavelength in the second wavelength range.

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