View. has been granted a patent for methods to fabricate electrochromic devices that prevent short circuits under top bus bars. The techniques involve modifying bus bars, creating self-healing layers, and adjusting conductive layers, allowing for active material placement without prior bus bar location determination. GlobalData’s report on View gives a 360-degree View of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on View, Smart windows was a key innovation area identified from patents. View's grant share as of July 2024 was 45%. Grant share is based on the ratio of number of grants to total number of patents.
Electrochromic device fabrication methods preventing short circuits
The patent US12072598B2 outlines a method for fabricating an electrochromic device, which includes an electrochromic stack situated between two transparent, electronically conductive layers. The process begins with a substrate that has the first conductive layer applied. Following this, the electrochromic stack, consisting of an electrochromic layer and a counter electrode layer, is fabricated on the first layer. A second transparent conductive layer is then formed on top of the electrochromic stack. A critical aspect of the method is the implementation of a short mitigation operation, which either prevents or removes electrical shorts that may occur between the second conductive layer and the electrochromic device beneath the bus bar, all while maintaining the functionality of the device in that region.
Additionally, the method allows for continuous substrate feeding from a roll, with the substrate potentially being flexible glass. The fabrication steps, including the formation of the first and second conductive layers and the electrochromic stack, can be executed sequentially in a sputter coating apparatus. The short mitigation operation may involve various techniques, such as creating a barrier layer, applying a healing stimulus, or blocking passages where shorts form. Notably, the method does not require isolating regions of the first conductive layer or the electrochromic stack before applying the second layer, nor does it necessitate pre-defining the bus bar's location. The process also accommodates the formation of additional bus bars and allows for cutting the substrate into multiple electrochromic units, either before or after the bus bar formation.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
