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    CATIONIC GETTERING IN LIQUID CRYSTAL NCAP AND PDLC FILMS
    51.
    发明公开
    CATIONIC GETTERING IN LIQUID CRYSTAL NCAP AND PDLC FILMS 审中-公开

    公开(公告)号：US20240117251A1

    公开(公告)日：2024-04-11

    申请号：US17892558

    申请日：2022-08-22

    Applicant: Orbotech Ltd.

    Inventor： Jason S. Reid ,  Karla Gutierrez Cuevas ,  Nungavaram S. Viswanathan

    IPC: C09K19/54 ,  C03C17/00 ,  G02F1/1334 ,  G02F1/137

    CPC classification number: C09K19/544 ,  C03C17/007 ,  G02F1/1334 ,  G02F1/137 ,  G02F1/133302

    Abstract: An electro-optic modulator is disclosed. The electro-optic modulator includes a modulator material film layer. The modulator material film layer includes a polymer matrix. Liquid crystals and getter molecules are dispersed within the polymer matrix. The liquid crystals are configured to modulate light transmissivity through the electro-optic modulator. The getter molecules capture or coordinate with cationic impurities present within the polymer matrix. By gettering the cationic impurities, switching of the device at modulated low frequencies are improved as well as a reduction on the switching voltage of the device. Three classes of getter molecules have been so far demonstrated to work: inorganic ion traps (dihydrogen ammonium phosphate), organic cation traps (EDTA), and organic ion extractors (nicotinic acid). An amount for the getter molecules may be 0.01 to 1.0 percent by weight of the polymer matrix.

    Display device
    54.
    发明授权
    Display device 有权

    公开(公告)号：US11934065B1

    公开(公告)日：2024-03-19

    申请号：US18331188

    申请日：2023-06-08

    Applicant: AUO Corporation

    Inventor： Wan Heng Chang ,  Min-Hsuan Chiu ,  Syuan-Ying Lin ,  Wei-Ming Cheng

    IPC: G02F1/13357 ,  G02F1/133 ,  G02F1/137

    CPC classification number: G02F1/133603 ,  G02F1/13306 ,  G02F1/133605 ,  G02F1/13718

    Abstract: A display device includes a substrate, a first light emitting element, a second light emitting element, and an optical film sheet. The first light emitting element and the second light emitting element are disposed on the substrate. The first light emitting element emits a first light, and the first light has a first wavelength range. The second light emitting element emits a second light, and the second light has a second wavelength range. The optical film sheet is disposed above the first light emitting element and the second light emitting element. The optical film sheet includes a first zone and a second zone. The first zone includes a first cholesteric liquid crystal, and the first cholesteric liquid crystal reflects light in at least the first wavelength range. The second zone includes a second cholesteric liquid crystal, and the second cholesteric liquid crystal reflects light in at least the second wavelength range.

    Switchable mirror and display
    55.
    发明授权
    Switchable mirror and display 有权

    公开(公告)号：US11932170B2

    公开(公告)日：2024-03-19

    申请号：US17076319

    申请日：2020-10-21

    Applicant: GENTEX CORPORATION

    Inventor： Xiaoxu Niu ,  David J. Cammenga ,  William L. Tonar

    IPC: B60R1/12 ,  B60R1/02 ,  G02F1/01 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/137

    CPC classification number: B60R1/12 ,  B60R1/02 ,  G02F1/0136 ,  G02F1/133308 ,  G02F1/133536 ,  G02F1/134309 ,  G02F1/137 ,  B60R2001/1215

    Abstract: An improved device switchable between reflective and display states comprising an optical element and a display element. The optical element comprising a liquid crystal medium disposed between first and second substrates. The optical element may further comprise a first electrode, a second electrode, an absorptive polarizer, and a reflective polarizer. The first electrode and the absorptive polarizer may be disposed in a first direction relative the liquid crystal medium. Similarly, the second electrode and the reflective polarizer may be disposed in a second direction relative the liquid crystal medium. The second direction is opposite the first direction. In some embodiments, one or more of the absorptive and reflective polarizers may be further disposed between the first and second substrates. The display may be disposed in the first direction relative the optical element. Additionally, the device may further comprise a housing. In some embodiments, the housing may not have a bezel.

    LASER-PROTECTION VARIABLE TRANSMISSION OPTICAL DEVICE
    57.
    发明公开
    LASER-PROTECTION VARIABLE TRANSMISSION OPTICAL DEVICE 审中-公开

    公开(公告)号：US20240077777A1

    公开(公告)日：2024-03-07

    申请号：US18505144

    申请日：2023-11-09

    Applicant: ALPHAMICRON INCORPORATED

    Inventor： Bahman Taheri ,  Ludmilla Sukhomlinova ,  Antonio Munoz ,  Joseph Angelo

    IPC: G02F1/137 ,  G02F1/1347

    CPC classification number: G02F1/137 ,  G02F1/1347

    Abstract: A laser protection variable transmission optical device (“LP-VTOD”) includes first and second cells, each capable of changing from a state of higher light transmittance to a state of lower light transmittance. The first cell is characterized by a narrow band absorption having a first peak absorption wavelength and a first FWHM of 175 nm or less, and the second cell is characterized by a narrow band absorption having a second peak absorption wavelength and a second FWHM of 175 nm or less. The first peak absorption wavelength may be the same or different than the second peak absorption wavelength. The LP-VTOD is capable of switching from a clear state to a darkened state having a darkened state transmittance % TDS-P that is equal to or less than 10% for at least one of the first or second peak absorption wavelengths.

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