公开(公告)号：US20230279585A1

公开(公告)日：2023-09-07

申请号：US18149596

申请日：2023-01-03

Applicant: Meta Platforms Technologies, LLC

Inventor： Sheng Ye ,  Jing Chen ,  Hao Mei ,  Andrew John Ouderkirk ,  Arman Boromand ,  Kristy Alana Jost ,  Nagi Hosni Elabbasi ,  Jonathan Robert Peterson ,  Christopher Yuan Ting Liao

IPC: D01D5/00 ,  C08J5/18 ,  G02B27/01

CPC classification number: D01D5/0038 ,  C08J5/18 ,  G02B27/017 ,  C08J2327/12 ,  G02B2027/0178

Abstract: Mechanically and piezoelectrically anisotropic polymer fibers may be formed by spinning a polymer solution or gel that includes a high molecular weight crystallizable polymer and a liquid solvent. The solvent may be configured to interact with the polymer to facilitate chain alignment and, in some examples, create a higher crystalline content within the spun fibers. The polymer solution may also include a low molecular weight additive. The high and low molecular weight polymers may each be characterized by a bimodal molecular weight distribution where the molecular weight of the additive is less than the molecular weight of the crystallizable polymer. The polymer(s) and the additive(s) may be independently selected from vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, hexafluoropropene, vinyl fluoride, etc. The spun fibers may be oriented, annealed, poled, and woven or laminated to form a polymer thin film having a high elastic modulus and a high electromechanical coupling factor.

公开(公告)号：US11597198B2

公开(公告)日：2023-03-07

申请号：US17137455

申请日：2020-12-30

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Sheng Ye ,  Andrew John Ouderkirk ,  Arman Boromand ,  Liliana Ruiz Diaz

IPC: B32B38/00 ,  B32B27/08 ,  B32B27/36 ,  B32B7/022 ,  B32B37/20 ,  B32B7/023 ,  B32B43/00

Abstract: A method of manufacturing an optically anisotropic polymer thin film includes forming a composite structure that includes a polymer thin film and a high Poisson's ratio polymer thin film disposed directly over the polymer thin film, attaching a clip array to opposing edges of the composite, the clip array including a plurality of first clips slidably disposed on a first track located proximate to a first edge of the composite and a plurality of second clips slidably disposed on a second track located proximate to a second edge of the composite, applying a positive in-plane strain to the composite along a transverse direction by increasing a distance between the first clips and the second clips, and decreasing an inter-clip spacing amongst the first clips and amongst the second clips along a machine direction, wherein the high Poisson's ratio polymer thin film applies a negative in-plane strain to the polymer thin film along the machine.

公开(公告)号：US20220348747A1

公开(公告)日：2022-11-03

申请号：US17554982

申请日：2021-12-17

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Sheng Ye ,  Andrew John Ouderkirk ,  Arman Boromand ,  Christopher Stipe ,  Hao Mei ,  Christopher Yuan Ting Liao

IPC: C08L23/06 ,  C08K5/01 ,  C08K3/014

Abstract: An optically clear, high strength, high modulus, and high thermal conductivity polyethylene thin film may be formed from a crystallizable polymer and an additive configured to interact with the crystallizable polymer to facilitate crystallite alignment and, in some examples, create a higher crystalline content within the polyethylene thin film. The polyethylene thin film may be characterized by a bimodal molecular weight distribution where the molecular weight of the additive may be less than approximately 5% of the molecular weight of the crystallizable polymer. Example crystallizable polymers may include high molecular weight polyethylene, high density polyethylene, and ultra-high molecular weight polyethylene. Example additives may include low molecular weight polyethylene and polyethylene oligomers. The polyethylene thin film may be characterized by a Young's modulus of at least approximately 10 GPa, a tensile strength of at least approximately 0.7 GPa, and a thermal conductivity of at least approximately 5 W/mK.

公开(公告)号：US20220348730A1

公开(公告)日：2022-11-03

申请号：US17582574

申请日：2022-01-24

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Sheng Ye ,  Arman Boromand ,  Christopher Yuan Ting Liao ,  Laura Cressman ,  Emma Rae Mullen ,  Andrew John Ouderkirk ,  Hao Mei ,  Cody Wayne Weyhrich ,  Rui Jian

IPC: C08J5/18 ,  H01L41/193 ,  H01L41/333 ,  H01L41/08

Abstract: A polymer thin film includes polyvinylidene fluoride (PVDF) and is characterized by a Young's modulus along an in-plane dimension of at least 4 GPa, an electromechanical coupling factor (k31) of at least 0.1 at room temperature. A method of manufacturing such a polymer thin film may include forming a polymer composition into a polymer thin film, applying a tensile stress to the polymer thin film along at least one in-plane direction and in an amount effective to induce a stretch ratio of at least approximately 5 in the polymer thin film, and applying an electric field across a thickness dimension of the polymer thin film. Annealing and poling steps may separately or simultaneously accompany and/or follow the act of stretching of the polymer thin film.

公开(公告)号：US11435641B1

公开(公告)日：2022-09-06

申请号：US17137916

申请日：2020-12-30

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Afsoon Jamali ,  Arman Boromand ,  Jasmine Soria Sears ,  Sandro Pintz

IPC: G02F1/139 ,  G02F1/133

Abstract: A switchable optical retardation device includes a switchable retardation element including liquid crystals and an electrical driver circuit. While in a first state, the switchable retardation element modifies light transmitted through the switchable retardation element by causing a phase shift of a first retardation angle. While in a second state, the switchable retardation element modifies the light transmitted through the switchable retardation element by causing a phase shift of a second retardation angle distinct from the first retardation angle. The electrical driver circuit provides a first voltage for placing the switchable retardation element in the first state and a second voltage for placing the switchable retardation element in the second state. The first voltage is greater than the second voltage, the second voltage is a non-zero voltage, and the electrical driver circuit alternatingly provides the first voltage and the second voltage with a predefined frequency.

公开(公告)号：US12276772B1

公开(公告)日：2025-04-15

申请号：US18493734

申请日：2023-10-24

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Sheng Ye ,  Li Yao ,  Tingling Rao ,  Lafe Joseph Purvis, II ,  Tanya Malhotra ,  Andrew John Ouderkirk ,  Arman Boromand

IPC: G02F1/1333 ,  C09K19/02 ,  C09K19/38 ,  G02B1/08 ,  G02B5/30 ,  G02F1/1335

Abstract: An optical film includes a block copolymer film defining a plurality of helically shaped cavities and a plurality of helically shaped organic solid crystals positioned within the plurality of helically shaped cavities. A method of making the optical film includes obtaining a film of a block copolymer solution including a chiral block copolymer and a non-chiral block copolymer on a substrate. The method includes annealing the film, thereby forming a plurality of helical structures from the chiral block copolymer defined within the non-chiral block copolymer and removing the plurality of helical structures, thereby creating a plurality of helically shaped cavities. The method further includes forming organic solid crystals inside the plurality of helically shaped cavities, thereby forming the optical film.

公开(公告)号：US20250093563A1

公开(公告)日：2025-03-20

申请号：US18732070

申请日：2024-06-03

Applicant: Meta Platforms Technologies, LLC

Inventor： Zhimin Shi ,  Zhaoyu Nie ,  Sheng Ye ,  Arman Boromand ,  Xiayu Feng ,  Andrew John Ouderkirk

IPC: G02B5/30

Abstract: An optical element includes a display device and an angular occlusion filter disposed over at least one surface of the display device. The angular occlusion filter may be configured to modulate one or more of transmission, reflection, and polarization of image or ambient light incident upon the display device.

公开(公告)号：US20250075373A1

公开(公告)日：2025-03-06

申请号：US18543040

申请日：2023-12-18

Applicant: Meta Platforms Technologies, LLC

Inventor： Lafe Joseph Purvis, II ,  Tingling Rao ,  Andrew John Ouderkirk ,  Kimberly Kay Childress ,  Arman Boromand

IPC: C30B29/54 ,  C30B28/00

Abstract: A method of forming an organic solid crystal (OSC) thin film includes forming a molecular feedstock of an organic solid crystal precursor and a molecular dopant, forming a layer of the molecular feedstock over a surface of a substrate, forming crystal nuclei from the organic solid crystal precursor within a nucleation region of the layer of molecular feedstock, and growing the crystal nuclei to form a doped organic solid crystal thin film.

公开(公告)号：US12140730B2

公开(公告)日：2024-11-12

申请号：US17369861

申请日：2021-07-07

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Tingling Rao ,  Tanya Malhotra ,  Andrew John Ouderkirk ,  Lafe Joseph Purvis, II ,  Sandeep Rekhi ,  Arman Boromand ,  Sheng Ye ,  Oleg Yaroshchuk ,  Anurag Tyagi

IPC: G02B1/04 ,  C09D5/00 ,  C09D7/45 ,  C09D7/63 ,  C30B29/54 ,  G02B1/02 ,  G02B1/10 ,  G02B5/30

Abstract: An optical film includes an organic solid crystal film formed of a contiguous organic solid crystal having a first dimension no less than 100 micrometer and a second dimension distinct from the first dimension no less than one centimeter. Methods for making the organic solid crystal film are also described.

公开(公告)号：US20240142677A1

公开(公告)日：2024-05-02

申请号：US18483141

申请日：2023-10-09

Applicant: Meta Platforms Technologies, LLC

Inventor： Zhaoyu Nie ,  Sheng Ye ,  Liliana Ruiz Diaz ,  Weihua Gao ,  Spencer Allan Wells ,  Andrew John Ouderkirk ,  Arman Boromand ,  Junren Wang ,  Tingling Rao ,  Lafe Joseph Purvis, II ,  Hend Baza

IPC: G02B5/20

CPC classification number: G02B5/20

Abstract: A notched filter includes a multilayer having alternating first and second polymer layers, the first polymer layers each including an isotropic polymer thin film having in-plane refractive indices n1x and n1y, and the second polymer layers each including an isotropic or anisotropic polymer thin film having in-plane refractive indices n2x and n2y, where a thickness of each successive first polymer layer decreases with increasing distance from a centerline of the multilayer, and a thickness of each successive second polymer layer increases with increasing distance from the centerline. Such a filter may be configured to reflect incident light having a desired polarization state within a predetermined and relatively narrow band.