公开(公告)号：US20220213372A1

公开(公告)日：2022-07-07

申请号：US17595092

申请日：2020-05-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Paul T. Hines ,  Derek J. Dehn ,  Sebastian Goris ,  Clinton P. Waller, Jr. ,  Mario A. Perez ,  Bharat R. Acharya ,  Ronald W. Ausen

IPC: C09K5/18 ,  C09K5/14 ,  C08K3/26 ,  C08K3/38 ,  C08K3/30 ,  C08K3/04 ,  C08J9/00 ,  C08J9/28

Abstract: (Co)polymer matrix composites including a porous (co)polymeric network; a multiplicity of thermally-conductive particles, and a multiplicity of endothermic particles distributed within the (co)polymeric network structure; wherein the thermally-conductive particles and endothermic particles are present in a range from 15 to 99 weight percent, based on the total weight of the particles and the (co)polymer (excluding the solvent). Optionally, the (co)polymer matrix composite volumetrically expands by at least 10% of its initial volume when exposed to a temperature of at least 135° C. Methods of making and using the (co)polymer matrix composites are also disclosed. The (co)polymer matrix composites are useful, for example, as heat dissipating or heat absorbing articles, as fillers, thermal interface materials, and thermal management materials, for example, in electronic devices, more particularly mobile handheld electronic devices, power supplies, and batteries.

公开(公告)号：US20180108915A1

公开(公告)日：2018-04-19

申请号：US15559948

申请日：2016-03-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Raymond P. Johnston ,  Onur S. Yordem ,  Brett J. Sitter ,  Bradley W. Eaton ,  Brian T. Weber ,  Gregory M. Haugen ,  Bharat R. Acharya ,  Brandon A. Bartling

IPC: H01M4/86

CPC classification number: H01M4/8605 ,  H01M4/0407 ,  H01M4/8652 ,  H01M4/8657 ,  H01M4/8673 ,  H01M4/88 ,  H01M2004/021

Abstract: The present disclosure relates to porous electrodes and electrochemical cells and liquid flow batteries produced therefrom. The disclosure further provides methods of making electrodes. The porous electrodes include polymer, e.g. non-electrically conductive polymer particulate fiber, and an electrically conductive carbon particulate. The non-electrically conductive, polymer particulate fibers may be in the form of a first porous substrate, wherein the first porous substrate is at least one of a woven or nonwoven paper, felt, mat and cloth. The porous electrode may have an electrical resistivity of less than about 100000 μOhm·m. The porous electrode may have a thickness from about 10 microns to about 1000 microns. Electrochemical cells and liquid flow batteries may be produced from the porous electrodes of the present disclosure.

公开(公告)号：US12299239B2

公开(公告)日：2025-05-13

申请号：US18604764

申请日：2024-03-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bharat R. Acharya ,  Robert D. Taylor ,  Joseph P. Attard ,  Benjamin J. Forsythe ,  David T. Yust ,  Matthew E. Sousa ,  Jason S. Petaja ,  Anthony M. Renstrom ,  William Blake Kolb ,  Matthew S. Cole ,  Matthew S. Stay ,  Matthew R. D. Smith ,  Jeremy O. Swanson ,  Tri D. Pham ,  David A. Rosen ,  Qunyi Chen ,  Lisa A. DeNicola ,  Quinn D. Sanford ,  Carl A. Stover ,  Lin Zhao ,  Gilles J. Benoit

IPC: G06F3/042 ,  F21V8/00 ,  G02B5/02 ,  G02B5/30

Abstract: A display system for sensing a finger of a user applied to the display system includes a display panel; a sensor for sensing the finger; a sensing light source configured to emit a first light having a first wavelength W1; and a reflective polarizer disposed between the display panel and the sensor. For a substantially normally incident light, an optical transmittance of the reflective polarizer versus wavelength for a first polarization state has a band edge such that for a first wavelength range extending from a smaller wavelength L1 to a greater wavelength L2 and including W1, where 30 nm≤L2−L1≤50 nm and L1 is greater than and within about 20 nm of a wavelength L3 corresponding to an optical transmittance of about 50% along the band edge, the optical transmittance has an average of greater than about 75%.

公开(公告)号：US12147122B2

公开(公告)日：2024-11-19

申请号：US18558425

申请日：2022-05-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Carl A. Stover ,  Matthew E. Sousa ,  Bharat R. Acharya ,  Benjamin J. Forsythe ,  Robert D. Taylor ,  Quinn D. Sanford

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

Abstract: A backlight including a front reflector disposed on a back reflector and defining a cavity therebetween. For a visible wavelength range and for a first incident angle of less than 5 degrees, the front reflector has an average transmittance of less than 20% for the incident light polarized along a first direction, and an average transmittance of between 20% and 85% for the incident light polarized along an orthogonal second direction. For a visible wavelength range and for a second incident angle of greater than 40 degrees, the front reflector has an average transmittance of less than 40% for each of the first and second directions. For at least a first wavelength in an infrared wavelength range, the front reflector has a transmittance of greater than about 40% for each of the first and second incident angles and for each of the first and second directions. For each of the first and second incident angles, for the incident light polarized along each of the first and second directions, the back reflector has a transmittance of greater than 30% for the first infrared wavelength, and an average transmittance of less than 20% in the visible range.

公开(公告)号：US20240295304A1

公开(公告)日：2024-09-05

申请号：US18663323

申请日：2024-05-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bharat R. Acharya ,  Fan Long ,  Edward S. Hagermoser ,  Jathan D. Edwards

IPC: F21V9/14 ,  A61L2/08 ,  A61L2/10 ,  F21Y113/10 ,  G02F1/1335 ,  G02F1/13357

CPC classification number: F21V9/14 ,  A61L2/085 ,  A61L2/10 ,  G02F1/133536 ,  G02F1/133603 ,  F21Y2113/10 ,  G02F2203/11

Abstract: A display system includes visible light emitting first devices configured to emit a first light having at least a first visible wavelength; ultraviolet light emitting second devices configured to emit a second light having at least a second ultraviolet wavelength; a display panel disposed on the first and second devices; and a reflective polarizer disposed between the display panel and the first and second devices, such that the reflective polarizer has, for the visible wavelength, an average optical reflectance of greater than about 50% when an incident light is polarized along an in-plane first direction and an average optical transmittance of greater than about 50% when the incident light is polarized along an in-plane orthogonal second direction; and an optical transmission of greater than about 30% for the at least the second wavelength and for at least one of the first and second polarization states.

公开(公告)号：US20240264347A1

公开(公告)日：2024-08-08

申请号：US18567823

申请日：2021-06-28

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Fan Long ,  Bharat R. Acharya ,  Jaewon Kim ,  Jingfei Chen ,  Huijie Xie ,  Zhe Hu

IPC: G02B5/26 ,  G01S7/03 ,  G01S13/931 ,  G02B1/04 ,  G02B5/20 ,  G02B5/30

CPC classification number: G02B5/26 ,  G01S7/03 ,  G01S13/931 ,  G02B1/04 ,  G02B5/208 ,  G02B5/3008

Abstract: An optical stack (100) includes a substrate (110), a radio-wave anti-reflection sheet (130) configured to reduce reflection from the optical stack (100) of radio waves at a predetermined operating frequency (f), and a visible light reflective, infrared light transmissive multilayer optical film (120) disposed between the radio-wave anti-reflection sheet (130) and the substrate (110). For N radiation substantially normally incident on the radio-wave anti-reflection sheet (130) and for a first frequency range at least 20 GHz wide, centered on the predetermined operating frequency (f), and disposed between about 1 GHz and about 120 GHz, a return loss of the optical stack (100) is asymmetric about the predetermined operating frequency (f) in the first frequency range. The optical stack (100) has a largest return loss S11L in the first frequency range of less than −10 dB and a difference between the largest return loss S11L and a smallest return loss S11S in the first frequency range is less than about 2 dB.

公开(公告)号：US20240162204A1

公开(公告)日：2024-05-16

申请号：US18550301

申请日：2022-04-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Yuhsin Lu ,  Bharat R. Acharya ,  Adam D. Haag

IPC: H01L25/075 ,  G02B5/30 ,  H01L27/15 ,  H01L33/50

CPC classification number: H01L25/0753 ,  G02B5/305 ,  H01L27/156 ,  H01L33/505

Abstract: A backlight includes a plurality of light sources, a reflective polarizer disposed on the plurality of light sources, and an optical film disposed between the reflective polarizer and the plurality of discrete spaced apart light sources. For a substantially collimated incident light, for a visible wavelength range, and for a first incident angle of less than about 5 degrees, the reflective polarizer has an average optical reflectance of at least 60% when the incident light is p-polarized and an average optical transmittance of at least 60% when the incident light is s-polarized. For the average of p-polarized and s-polarized incident lights and the visible wavelength range, the optical film has an average optical transmittance T1 for the first incident angle, and an average transmittance T2 for a second incident angle of greater than about 35 degrees, such that T1/T2≥1.5.

公开(公告)号：US20240115746A1

公开(公告)日：2024-04-11

申请号：US18257716

申请日：2021-11-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Timothy J. Hebrink ,  John A. Wheatley ,  Bharat R. Acharya ,  Tao Liu ,  Stephen P. Maki ,  Gilles J.B. Benoit ,  Sean M. Sweetnam

IPC: A61L2/10 ,  G02B1/04 ,  G02B5/08 ,  G02B5/20 ,  H01J61/02 ,  H01J61/40

CPC classification number: A61L2/10 ,  G02B1/04 ,  G02B5/0891 ,  G02B5/208 ,  H01J61/025 ,  H01J61/40 ,  A61L2202/11

Abstract: A device including a housing that is substantially impermeable to ultraviolet radiation having a wavelength of from 280 nm to 400 nm, and at least one window defined in the housing, the window including a UV-C radiation band-pass mirror film having a multiplicity of alternating first and second optical layers collectively transmitting UV-C radiation at a wavelength from at least 100 nm to less than 280 nm and not transmitting UV-A and UV-B radiation at a wavelength of from 280 nm to 400 nm, and an ultraviolet radiation source positioned within the housing, the ultraviolet radiation source being capable of emitting ultraviolet radiation at one or more wavelength from 100 nm to 400 nm. The device optionally further includes an ultraviolet mirror film positioned within the housing so as to reflect ultraviolet radiation emitted by the ultraviolet radiation source. A method of disinfecting a material is also disclosed.

公开(公告)号：US20230350262A1

公开(公告)日：2023-11-02

申请号：US18303643

申请日：2023-04-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kevin W. Gotrik ,  Stephen J. Etzkorn ,  Adam T. Ringberg ,  Owen M. Anderson ,  Vivian W. Jones ,  Nicholas A. Johnson ,  Bharat R. Acharya

IPC: G02F1/00 ,  G02F1/16755 ,  G02F1/167

CPC classification number: G02F1/167 ,  G02F1/0063 ,  G02F1/16755

Abstract: An optical component includes a substrate and a plurality of structures formed on a first major surface of the substrate and extending from the first major surface along a thickness direction of the optical component. The optical component can be assembled with another optical component to form a light control film. A light control film includes first and second optical components including respective pluralities of first and second structures formed on, and extending from, respective first and second substrates. The first and second optical components are assembled so that the first and second structures are disposed between the first and second substrates and interleaved to form a plurality of pairs of adjacent first and second structures. For each of at least some of the pairs, the adjacent first and second structures define an optical cavity therebetween substantially filled with a light absorbing material.

公开(公告)号：US20230311120A1

公开(公告)日：2023-10-05

申请号：US18186371

申请日：2023-03-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bharat R. Acharya ,  Kurt J. Halverson ,  Robert M. Biegler ,  Timothy J. Lindquist ,  John Allen Wheatley ,  James A. Phipps ,  Joshua J. Loga ,  Brett J. Sitter

IPC: B01L3/00

CPC classification number: B01L3/502715 ,  G02B5/085

Abstract: An optical system for examining an optical characteristic of a test material at at least a first wavelength includes an elongated hollow structure elongated along a length thereof and having one or more walls extending along the length of the hollow structure and defining an elongated chamber therebetween configured to receive the test material. The elongated hollow structure includes at least a first light opening, such that for the at least the first wavelength, the one or more walls have an optical reflectance of greater than about 50% for incident angles of up to at least 40 degrees, and at least one of the at least the first light opening has an optical transmittance of greater than about 50% for at least one incident angle.