Vitro has been granted a patent for a method of producing coated glass substrates. This involves vacuum depositing an oxygen-deficient transparent conductive oxide layer and flash annealing it using specific non-coherent light parameters, enhancing the layer’s properties for applications in coated articles. GlobalData’s report on Vitro 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 Vitro, Photovoltaic drones was a key innovation area identified from patents. Vitro's grant share as of July 2024 was 52%. Grant share is based on the ratio of number of grants to total number of patents.
Method for producing coated glass substrates with conductive oxides
The patent US12032124B2 outlines a method for producing a coated glass substrate featuring a layer of transparent conductive oxide, specifically indium tin oxide (ITO). The process begins with the vacuum deposition of an oxygen-deficient sub-stoichiometric transparent metal oxide layer in an inert atmosphere containing minimal oxygen (0 to 2.5%). This layer must exhibit a high absorption coefficient (at least 1,000 cm-1) within the visible spectrum. Following deposition, the method involves annealing the layer by applying non-coherent light pulses, which vary in voltage and duration, to achieve specific physical properties in the resulting split layer of the transparent conductive oxide.
The claims further detail parameters for the deposition and annealing processes, including the thickness of the ITO layer (ranging from 150 nm to 2 µm) and the pressure conditions during deposition (2 mTorr to 5 mTorr). The annealing process is characterized by precise control over the pulse energy (3.5 J/cm² to 6.0 J/cm²) and the use of a mask to create patterns in the final layer, affecting attributes such as color reflection, transmission, sheet resistance, and emissivity. This innovative method aims to enhance the functional properties of the coated glass substrate, making it suitable for various applications in electronics and optics.
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