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公开(公告)号：US11909107B2
公开(公告)日：2024-02-20
申请号：US18189780
申请日：2023-03-24
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Mohsen Salehi , Stephen J. Etzkorn , Jaewon Kim , Brett J. Sitter
CPC classification number: H01Q1/424 , B32B5/022 , B32B7/025 , B32B7/12 , B32B17/10 , B32B27/08 , B32B27/12 , H01Q1/3283 , H01Q1/421
Abstract: A gradient permittivity film comprises (a) a first permittivity layer comprising a first continuous matrix of a first material having a first relative permittivity (εr1) and a second component having a second relative permittivity (εr2) dispersed in the first continuous matrix, the first permittivity layer having a first effective layer relative permittivity (ε1) and a thickness (T1); And (b) a second permittivity layer having a second effective layer relative permittivity (ε2) and a thickness (T2) disposed on the first permittivity layer. T1=0.8(t1) to 1.2(t1), where
t
1
=
c
4
f
ε
1
;
T
2
=
0.8
(
t
2
)
to
1.2
(
t
2
)
,
where
t
2
=
c
4
f
ε
2
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公开(公告)号：US20230350107A1
公开(公告)日：2023-11-02
申请号：US18303276
申请日：2023-04-19
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kevin W. Gotrik , Stephen J. Etzkorn , Nicholas A. Johnson , Tao Liu , John J. Sullivan , Bharat R. Acharya
CPC classification number: G02B5/003 , G02F1/153 , G02B2207/123
Abstract: A light control film includes a plurality of substantially parallel optical cavities. Each of the optical cavities has a height H along a thickness direction of the light control film and a minimum lateral dimension W along an in-plane width direction orthogonal to the thickness direction, where H≥W. The optical cavities are substantially filled with a liquid including a plurality of light absorbing particles configured to move along the thickness direction in response to one or more applied signals or fields such that the movement along the thickness direction causes each of the optical cavities to transition between a substantially opaque state and a substantially transparent state. A full viewing angle of the light control film increases when the optical cavities transition from the substantially opaque state to the substantially transparent state.
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公开(公告)号：US11749900B2
公开(公告)日：2023-09-05
申请号：US17044054
申请日：2019-04-04
Applicant: 3M Innovative Properties Company
Inventor： Dipankar Ghosh , Jaewon Kim , Stephen J. Etzkorn , Ronald D. Jesme , Mohsen Salehi , Guanglei Du , John A. Wheatley
CPC classification number: H01Q17/004 , G01S7/03 , H01Q1/3233 , H01Q1/38 , H01Q1/421 , H05K1/0237 , G01S7/027
Abstract: Radar standing wave dampening systems and components are described. In particular, systems and components including an absorber composite including at least one of ceramic filler, magnetic filler, or conductive filler materials are described. Such components can reduce the intensity of standing waves and may also be combined in systems with one or more gradient permittivity tapes or films.
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Patent Agency Ranking
公开(公告)号：US11637367B2
公开(公告)日：2023-04-25
申请号：US17045559
申请日：2019-04-05
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Mohsen Salehi , Stephen J. Etzkorn , Jaewon Kim , Brett J. Sitter
Abstract: A gradient permittivity film comprises (a) a first permittivity layer comprising a first continuous matrix of a first material having a first relative permittivity (εr1) and a second component having a second relative permittivity (εr2) dispersed in the first continuous matrix, the first permittivity layer having a first effective layer relative permittivity (ε1) and a thickness (T1); and (b) a second permittivity layer having a second effective layer relative permittivity (ε2) and a thickness (T2) disposed on the first permittivity layer T1=0.8(t1) to 1.2(t1), where t1=(I); T2=0.8(t2) to 1.2 (T2), where T2=(II). t 1 = c 4 f ε 1 ( I ) t 2 = c 4 f ε 2 ( II )
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公开(公告)号：US20210050673A1
公开(公告)日：2021-02-18
申请号：US17044054
申请日：2019-04-04
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Dipankar Ghosh , Jaewon Kim , Stephen J. Etzkorn , Ronald D. Jesme , Mohsen Salehi , Guanglei Du , John A. Wheatley
Abstract: Radar standing wave dampening systems and components are described. In particular, systems and components including an absorber composite including at least one of ceramic filler, magnetic filler, or conductive filler materials are described. Such components can reduce the intensity of standing waves and may also be combined in systems with one or more gradient permittivity tapes or films.
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公开(公告)号：US20190302530A1
公开(公告)日：2019-10-03
申请号：US16308169
申请日：2017-06-05
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathaniel K. Naismith , Stephen J. Etzkorn
IPC: G02F1/1335
Abstract: Recycling backlight systems are described. In particular, recycling backlight systems including a circular reflective polarizer, a reflector with a metalized reflective surface, and a lightguide disposed between the reflector and the circular reflective polarizer are described. The described backlights can increase recycling backlight efficiency.
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公开(公告)号：US09618791B2
公开(公告)日：2017-04-11
申请号：US14360105
申请日：2012-11-21
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Adam D. Haag , Tri D. Pham , Steven H. C. Kong , Stephen J. Etzkorn , Robert L. Endres , Matthew B. Johnson
IPC: G02F1/1335
CPC classification number: G02F1/133606 , G02F1/133504 , G02F1/133536 , G02F2001/133607
Abstract: The present disclosure describes an optical stack that includes an asymmetric diffuser. As described herein, use of an asymmetric diffuser in an optical stack reduces undesirable defects in a display while maintaining optical gain and/or contrast of the display. The asymmetric diffuser is less diffusive along a first direction that is parallel with linearly extending structures of an associated light directing film.
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公开(公告)号：US20140285749A1
公开(公告)日：2014-09-25
申请号：US14360105
申请日：2012-11-21
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Adam D. Haag , Tri D. Pham , Steven H.C. Kong , Stephen J. Etzkorn , Robert L. Endres , Matthew B. Johnson
IPC: G02F1/1335
CPC classification number: G02F1/133606 , G02F1/133504 , G02F1/133536 , G02F2001/133607
Abstract: The present disclosure describes an optical stack that includes an asymmetric diffuser. As described herein, use of an asymmetric diffuser in an optical stack reduces undesirable defects in a display while maintaining optical gain and/or contrast of the display. The asymmetric diffuser is less diffusive along a first direction that is parallel with linearly extending structures of an associated light directing film
Abstract translation: 本公开描述了包括不对称扩散器的光学堆叠。 如本文所述，在光学堆叠中使用不对称扩散器减少显示器中的不期望的缺陷，同时保持显示器的光学增益和/或对比度。 不对称扩散器沿着与相关联的导光膜的线性延伸结构平行的第一方向较少地扩散
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