Marubeni has been granted a patent for an electroluminescent device featuring a substrate, electrodes, and a unique emission layer with luminescent nanostructures. A hybrid transport layer, consisting of an organic layer and inorganic nanostructures, separates the luminescent elements, ensuring no chemical reaction occurs between them. GlobalData’s report on Marubeni 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 Marubeni, Fuel cell powered drones was a key innovation area identified from patents. Marubeni's grant share as of June 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.
Electroluminescent device with hybrid transport layer
The patent US12010862B2 describes an innovative electroluminescent device that integrates a substrate, a first electrode, and a sophisticated emission layer containing luminescent nanostructures. A key feature of this device is the hybrid transport layer, which consists of an organic layer interspersed with inorganic nanostructures. This configuration ensures that the luminescent nanostructures are chemically isolated from the inorganic components, promoting stability and performance. The claims further specify that both the organic and inorganic materials can be soluble in common solvents, such as alcohol or acetone, enhancing the manufacturing process. Additionally, the organic layer may contain specific phosphonic oxide functional groups, which could contribute to the device's efficiency.
Moreover, the patent outlines the potential application of this electroluminescent device in display technology. It describes a display device featuring an array of pixels, each incorporating two electroluminescent devices capable of emitting different wavelengths of light. This dual-emission capability allows for a broader color spectrum, enhancing the display's visual quality. The claims also highlight the structural arrangement of the inorganic nanostructures within the organic layer, ensuring that the luminescent nanostructures remain effectively separated. Overall, the patent presents a detailed framework for advancing electroluminescent devices and their applications in modern display technologies.
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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.
