Sharp had four patents in batteries during Q4 2023. Sharp Corp filed a patent for a light-emitting element with a specific structure including metal oxide nanoparticles and thiol group-containing ligands in the electron transport layer. Another patent describes a method for manufacturing a metal-air battery involving stacking layers and fusing them together, followed by removing a portion to create an opening. GlobalData’s report on Sharp gives a 360-degreee view of the company including its patenting strategy. Buy the report here.

Sharp grant share with batteries as a theme is 25% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: Light emitting element, display device, lighting device, and method for producing light emitting element (Patent ID: US20230403930A1)

The patent filed by Sharp Corp. describes a light-emitting element with an anode, blue light-emitting layer, electron transport layer, and cathode. The electron transport layer includes a nanoparticle with a metal oxide and a ligand containing a thiol group. The ligand may contain a compound with one thiol group per molecule, an odd number of carbon atoms, or a benzene ring directly bonded to the thiol group.

The method for producing the light-emitting element involves causing a metal-oxide precursor to react with a hydroxide ion to generate a nanoparticle, adding a quantum dot with the nanoparticle and ligand to a solution, and applying the solution onto a substrate. Additional steps include adding a second alcohol to the quantum dot, cleaning the solution with various solvents, and ensuring the ligand contains a specific number of carbon atoms. The patent also covers a display device comprising the described light-emitting element.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

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.