CONTROLLING TRANSITIONS IN OPTICALLY SWITCHABLE DEVICES

    公开(公告)号:US20190324342A1

    公开(公告)日:2019-10-24

    申请号:US16459142

    申请日:2019-07-01

    Applicant: View, Inc.

    Abstract: Aspects of this disclosure concern controllers and control methods for applying a drive voltage to bus bars of optically switchable devices such as electrochromic devices. Such devices are often provided on windows such as architectural glass. In certain embodiments, the applied drive voltage is controlled in a manner that efficiently drives an optical transition over the entire surface of the electrochromic device. The drive voltage is controlled to account for differences in effective voltage experienced in regions between the bus bars and regions proximate the bus bars. Regions near the bus bars experience the highest effective voltage.

    Fabrication of low defectivity electrochromic devices

    公开(公告)号:US10261381B2

    公开(公告)日:2019-04-16

    申请号:US15340853

    申请日:2016-11-01

    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.

    Driving thin film switchable optical devices

    公开(公告)号:US09921450B2

    公开(公告)日:2018-03-20

    申请号:US15226793

    申请日:2016-08-02

    Applicant: View, Inc.

    CPC classification number: G02F1/163 G02F1/15 G02F1/155 G02F2001/1555

    Abstract: Controllers and control methods apply a drive voltage to bus bars of a thin film optically switchable device. The applied drive voltage is provided at a level that drives a transition over the entire surface of the optically switchable device but does not damage or degrade the device. This applied voltage produces an effective voltage at all locations on the face of the device that is within a bracketed range. The upper bound of this range is associated with a voltage safely below the level at which the device may experience damage or degradation impacting its performance in the short term or the long term. At the lower boundary of this range is an effective voltage at which the transition between optical states of the device occurs relatively rapidly. The level of voltage applied between the bus bars is significantly greater than the maximum value of the effective voltage within the bracketed range.

    CONTROLLING TRANSITIONS IN OPTICALLY SWITCHABLE DEVICES

    公开(公告)号:US20180039149A1

    公开(公告)日:2018-02-08

    申请号:US15786488

    申请日:2017-10-17

    Applicant: View, Inc.

    CPC classification number: G02F1/163 G09G3/19

    Abstract: Aspects of this disclosure concern controllers and control methods for applying a drive voltage to bus bars of optically switchable devices such as electrochromic devices. Such devices are often provided on windows such as architectural glass. In certain embodiments, the applied drive voltage is controlled in a manner that efficiently drives an optical transition over the entire surface of the electrochromic device. The drive voltage is controlled to account for differences in effective voltage experienced in regions between the bus bars and regions proximate the bus bars. Regions near the bus bars experience the highest effective voltage.

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