Nippon Electric Glass has patented a wavelength conversion member featuring a matrix of magnesium oxide and an inorganic phosphor. This member boasts a relative density of 98.2% to 99.5%, thermal conductivity of 10 W/m·K or more, and quantum efficiency of at least 50%, enhancing heat dissipation and luminescence intensity. GlobalData’s report on Nippon Electric Glass 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 Nippon Electric Glass, Hydrogen storage alloys was a key innovation area identified from patents. Nippon Electric Glass's grant share as of July 2024 was 34%. Grant share is based on the ratio of number of grants to total number of patents.
Wavelength conversion member with high thermal conductivity and efficiency
The granted patent US12068439B2 introduces a novel wavelength conversion member designed for enhanced optical applications. This member consists of a matrix made from inorganic particles, specifically magnesium oxide, and incorporates an inorganic phosphor. The key specifications of this wavelength conversion member include a relative density ranging from 98.2% to 99.5%, a thermal conductivity of at least 10 W/m·K, and a quantum efficiency of 50% or higher. The inorganic phosphor can be selected from various types, including oxide, oxynitride, and nitride phosphors, with specific examples such as YAG, LuAG, SiAlON, and CASN. The average particle diameter of the phosphor is specified to be between 0.1 to 25 µm, and the matrix may also include other materials like aluminum oxide, zinc oxide, and boron nitride.
In addition to the wavelength conversion member, the patent outlines applications in light-emitting elements and devices. A light-emitting element is described that integrates the wavelength conversion member with a substrate, while a light-emitting device incorporates the member alongside an excitation light source, which can be a laser diode. This innovation aims to improve the efficiency and performance of light-emitting technologies, potentially benefiting various industries reliant on advanced lighting solutions.
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