INTERDIGITATED ELECTRODE ASSEMBLIES, LIQUID CRYSTAL DEVICES, AND METHODS FOR MANUFACTURE

    公开(公告)号:US20240295779A1

    公开(公告)日:2024-09-05

    申请号:US18571310

    申请日:2022-06-03

    CPC classification number: G02F1/134363

    Abstract: Disclosed are interdigitated electrode assemblies and liquid crystal devices and windows including such assemblies, wherein the interdigitated electrode assembly comprises: a substrate: a plurality of first electrodes and a plurality of second electrodes, wherein the plurality of first electrodes and the plurality of second electrodes are interdigitated: at least one first insulator which overlays at least a portion of the plurality of second electrodes: and a first bus bar which overlays the at least one first insulator and does not electrically contact the plurality of second electrodes. Also disclosed are methods for manufacturing interdigitated electrode assemblies and liquid crystal devices and windows including those assemblies.

    Liquid lenses and methods for operating liquid lenses

    公开(公告)号:US11662568B2

    公开(公告)日:2023-05-30

    申请号:US16762411

    申请日:2018-11-14

    CPC classification number: G02B26/005 G02B3/14 G02B7/028

    Abstract: A liquid lens system includes first and second liquids disposed within a cavity. An interface between the first and second liquids defines a variable lens. A common electrode is in electrical communication with the first liquid. A driving electrode is disposed on a sidewall of the cavity and insulated from the first and second liquids. A controller supplies a common voltage to the common electrode and a driving voltage to the driving electrode. A voltage differential between the common voltage and the driving voltage is based at least in part on at least one of: (a) a first reference capacitance of a first reference electrode pair disposed within the first portion of the cavity and insulated from the first liquid or (b) a second reference capacitance of a second reference electrode pair disposed within the second portion of the cavity and insulated from the first liquid and the second liquid.

    LIQUID LENSES
    13.
    发明申请

    公开(公告)号:US20220057546A1

    公开(公告)日:2022-02-24

    申请号:US17521321

    申请日:2021-11-08

    Abstract: A liquid lens can include a first substrate with an interior recess. A second substrate with a bore can be bonded to the first substrate, whereby the interior recess of the first substrate and the bore of the second substrate cooperatively define at least a portion of a cavity of the liquid lens. A first liquid and a second liquid can be disposed in the cavity. A variable interface can be disposed between the first liquid and the second liquid, thereby forming a variable lens. The interior recess of the first substrate can be positioned outside of a sidewall projection of a sidewall surface of the cavity through the first substrate.

    LIQUID LENS SYSTEMS
    14.
    发明申请
    LIQUID LENS SYSTEMS 审中-公开

    公开(公告)号:US20200319380A1

    公开(公告)日:2020-10-08

    申请号:US16763439

    申请日:2018-11-15

    Abstract: A liquid lens can be coupled to ground, such as to impede charge from building up in the liquid lens during operation thereof. For example, an electrode that is in electrical communication with a conductive fluid of the liquid lens can be coupled to ground. A switch can be used to selectively couple the liquid lens to ground, such as for discharging the liquid lens. An electrode can be selectively coupled to ground and to driving signals using a switch. In some cases, drive signals can be provided to electrodes other than the grounded electrode for driving the liquid lens. In some cases, the liquid lens can be driven using feedback control based on one or more measured parameters indicative capacitance between a fluid and one or more electrodes in the liquid lens.

    LIQUID LENS CONTROL SYSTEMS AND METHODS
    15.
    发明申请

    公开(公告)号:US20200096679A1

    公开(公告)日:2020-03-26

    申请号:US16500631

    申请日:2018-04-05

    Abstract: Control systems for liquid lenses can use feedback control using one or more measured parameters indicative of a position of the fluid interface in the liquid lens. Capacitance between a fluid and an electrode in the liquid lens can vary depending on the position of the fluid interface. Current mirrors can be used for making measurements indicative of the capacitance and/or the fluid interface position. The liquid lens can be calibrated using the measurements indicative of capacitance and/or fluid interface position as the voltage is driven across an operational range. A control system can use pulse width modulation (PWM) for driving a liquid lens, and a carrier frequency for the PWM signals can be varied to control power consumption in the liquid lens. The slew rate can be adjustable to control power consumption in the liquid lens.

    Pressure-sensing touch system utilizing optical and capacitive systems
    16.
    发明授权
    Pressure-sensing touch system utilizing optical and capacitive systems 有权
    利用光学和电容系统的压力感测触摸系统

    公开(公告)号:US09557846B2

    公开(公告)日:2017-01-31

    申请号:US14044030

    申请日:2013-10-02

    CPC classification number: G06F3/0416 G06F3/0421 G06F3/044

    Abstract: A hybrid touch system that utilizes a combination of a capacitive touch system for position sensing and an optical touch system for pressure sensing is disclosed. The optical touch system includes a transparent sheet having a surface, at least one light source and at least one detector which are operably arranged relative to the transparent sheet to transmit light through the sheet and to detect the transmitted light. Performing position sensing using the capacitive touch system simplifies the pressure-sensing optical touch system.

    Abstract translation: 公开了一种混合触摸系统,其利用用于位置感测的电容式触摸系统和用于压力感测的光学触摸系统的组合。 光学触摸系统包括具有表面的透明片材,至少一个光源和至少一个检测器,其相对于透明片可操作地布置以透射片材并检测透射光。 使用电容式触摸系统执行位置检测简化了压力感应光学触摸系统。

    Liquid lens control systems and methods

    公开(公告)号:US11822100B2

    公开(公告)日:2023-11-21

    申请号:US16500627

    申请日:2018-04-05

    CPC classification number: G02B3/14 G02B3/0006 G02B26/004 G02B27/646

    Abstract: Control systems for liquid lenses can use feedback control using one or more measured parameters indicative of a position of the fluid interface in the liquid lens. Capacitance between a fluid and an electrode in the liquid lens can vary depending on the position of the fluid interface. Current mirrors can be used for making measurements indicative of the capacitance and/or the fluid interface position. The liquid lens can be calibrated using the measurements indicative of capacitance and/or fluid interface position as the voltage is driven across an operational range. A control system can use pulse width modulation (PWM) for driving a liquid lens, and a carrier frequency for the PWM signals can be varied to control power consumption in the liquid lens. The slew rate can be adjustable to control power consumption in the liquid lens.

    LIQUID LENSES AND METHODS FOR OPERATING LIQUID LENSES

    公开(公告)号:US20200271917A1

    公开(公告)日:2020-08-27

    申请号:US16762411

    申请日:2018-11-14

    Abstract: A liquid lens system includes first and second liquids disposed within a cavity. An interface between the first and second liquids defines a variable lens. A common electrode is in electrical communication with the first liquid. A driving electrode is disposed on a sidewall of the cavity and insulated from the first and second liquids. A controller supplies a common voltage to the common electrode and a driving voltage to the driving electrode. A voltage differential between the common voltage and the driving voltage is based at least in part on at least one of: (a) a first reference capacitance of a first reference electrode pair disposed within the first portion of the cavity and insulated from the first liquid or (b) a second reference capacitance of a second reference electrode pair disposed within the second portion of the cavity and insulated from the first liquid and the second liquid.

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