View has been granted a patent for electrochromic stacks and devices using nickel tungsten tantalum oxide (NiWTaO) in the anodically coloring layer. The material offers high transparency in its clear state. The method involves forming different sub-layers with specific compositions and ratios for optimal performance. 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 May 2024 was 35%. Grant share is based on the ratio of number of grants to total number of patents.
Electrochromic stack with nickel tungsten tantalum oxide for transparency
A recently granted patent (Publication Number: US11966140B2) discloses a method for fabricating an electrochromic stack. The method involves forming a cathodically coloring layer with a cathodically coloring electrochromic material and an anodically coloring layer containing nickel tungsten tantalum oxide. The nickel tungsten tantalum oxide in the anodically coloring layer has specific atomic ratios of Ni:(W+Ta) and W:Ta, along with multiple sub-layers of varying compositions. The anodically coloring layer is created through sputtering techniques using specific sputter targets, and it is noted to be substantially amorphous in nature. The cathodically coloring layer and anodically coloring layer are directly in contact without an ion conductor layer between them, showcasing unique morphologies and compositions.
Furthermore, the patent also covers an electrochromic stack comprising the cathodically coloring layer and anodically coloring layer with specific atomic ratios of nickel tungsten tantalum oxide. The anodically coloring layer is highlighted for its amorphous matrix structure with scattered domains of a second material. The electrochromic stack emphasizes the direct physical contact between the cathodically coloring layer and anodically coloring layer, showcasing different morphologies within the sub-layers. The cathodically coloring material in the stack includes tungsten oxide with specific stoichiometric values, forming a bilayer or graded layer structure. Overall, the patent provides a detailed method for fabricating electrochromic stacks with specific compositions and structures to enhance their performance and functionality in various applications.
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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.
