CONTROLLING TRANSITIONS IN OPTICALLY SWITCHABLE DEVICES

    公开(公告)号:US20220357626A1

    公开(公告)日:2022-11-10

    申请号:US17812328

    申请日:2022-07-13

    Applicant: View, Inc.

    Abstract: Methods, systems, apparatuses, and media for controlling optical transitions are provided. In some embodiments, a method comprises: (a) applying a drive voltage having a preset magnitude to an optically switchable device to cause the optically switchable device to transition from an initial optical state toward a target optical state; (b) measuring an open circuit voltage (Voc) of the optically switchable device and/or an amount of charge that has been delivered to the optically switchable device; (c) comparing characteristics of the measured Voc and/or the amount of charge to at least one parameter indicative of a target duration of time for the optically switchable device to transition from the initial optical state to the target optical state; (d) modifying the drive voltage to have a modified magnitude, wherein the modified magnitude is determined based at least in part on the comparison; and (e) repeating (a) and (b) until the target optical state is reached.

    Fabrication of low defectivity electrochromic devices

    公开(公告)号:US11440838B2

    公开(公告)日:2022-09-13

    申请号:US16859856

    申请日:2020-04-27

    Applicant: View, Inc.

    Abstract: Prior electrochromic devices frequently suffer from high levels of defectivity. The defects may be manifest as pin holes or spots where the electrochromic transition is impaired. This is unacceptable for many applications such as electrochromic architectural glass. Improved electrochromic devices with low defectivity can be fabricated by depositing certain layered components of the electrochromic device in a single integrated deposition system. While these layers are being deposited and/or treated on a substrate, for example a glass window, the substrate never leaves a controlled ambient environment, for example a low pressure controlled atmosphere having very low levels of particles. These layers may be deposited using physical vapor deposition. In certain embodiments, the device includes a counter electrode having an anodically coloring electrochromic material in combination with an additive.

    SACRIFICIAL LAYER FOR ELECTROCHROMIC DEVICE FABRICATION

    公开(公告)号:US20220259096A1

    公开(公告)日:2022-08-18

    申请号:US17661526

    申请日:2022-04-29

    Applicant: View, Inc.

    Abstract: Methods for protecting transparent electronically conductive layers on glass substrates are described herein. Methods include depositing a sacrificial coating during deposition of the transparent electronically conductive layer, before packing the glass substrate for storage or shipping, after unpacking glass substrates from a stack of glass substrates, and/or after a washing operation prior to fabricating an electrochromic stack on the transparent electronically conductive layer. Methods also include removing the sacrificial coating during a washing operation, during tempering, or prior to depositing an electrochromic stack by, e.g., heating the sacrificial coating or exposing the sacrificial coating to an inert plasma.

    BIRD FRIENDLY ELECTROCHROMIC DEVICES

    公开(公告)号:US20220179273A1

    公开(公告)日:2022-06-09

    申请号:US17678979

    申请日:2022-02-23

    Applicant: View, Inc.

    Abstract: Various embodiments herein relate to electrochromic windows that are bird friendly, as well as methods and apparatus for forming such windows. Bird friendly windows include one or more elements that make the window visible to birds so that the birds recognize that they cannot fly through the window. An electrochromic window includes one or more transparent substrates, wherein at least one of the substrates is an electrochromic (EC) lite including an electrochromic device and a pattern formed on at least one of the substrates by a laser, the pattern including a first feature configured to provide a set of optical properties different than optical properties of the transparent substrate. The set of optical properties includes one or more characteristics of refractivity, reflectivity and diffraction.

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