Sharp has been granted a patent for a light-emitting structure featuring a substrate with sub-pixel structures. These structures include an anode, cathode, and a combined charge transport and emissive layer containing quantum dots and smaller nanoparticles, arranged in a crosslinked matrix for enhanced performance. GlobalData’s report on Sharp 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 Sharp, Adaptive video coding was a key innovation area identified from patents. Sharp's grant share as of June 2024 was 44%. Grant share is based on the ratio of number of grants to total number of patents.
Light-emitting structure with quantum dots and nanoparticles
The granted patent US12048174B2 presents a novel light-emitting structure designed to enhance the performance of display technologies. Central to this invention is a substrate that supports multiple sub-pixel structures. Each sub-pixel structure features an anode, a cathode, and a combined charge transport and emissive layer situated between them. This layer incorporates quantum dots (QDs) with ligands and smaller nanoparticles, all dispersed within a crosslinked matrix formed from a charge transport material. Notably, the QDs and nanoparticles are arranged in a phase-segregated manner, creating a flatter surface on the cathode side, which is expected to improve light emission efficiency.
Further claims detail additional components of the light-emitting structure, including electron and hole injecting or transporting layers that enhance charge injection and transport. The crosslinkable charge transport material can contain various functional groups, such as epoxides and alkenes, which may contribute to the material's properties. The ligands of the QDs are also specified to have functional groups that may include similar chemical structures. Additionally, the combined charge transport and emissive layer may incorporate initiators and photoinitiators, which could facilitate the crosslinking process and improve the overall performance of the light-emitting structure. The patent outlines a comprehensive approach to optimizing light emission through advanced material composition and structural design.
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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.
