Universal Display has been granted a patent for compounds designed for use in organic light-emitting diodes (OLEDs). The patent specifically claims a compound with the formula Ir(LA)(LB)2, where LA is a first ligand and LB is a bidentate ligand. GlobalData’s report on Universal Display 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 Universal Display, AMOLED displays was a key innovation area identified from patents. Universal Display's grant share as of July 2024 was 60%. Grant share is based on the ratio of number of grants to total number of patents.
Compounds for oled emitters using specific ligands
The granted patent US12075691B2 describes a novel compound characterized by the formula Ir(LA)(LB)2, where LB is a bidentate ligand and LA is a ligand with a specific structure. The claims detail various configurations of the ligands LA and LB, including specific structural formulas and ranges for the integer Q, which can vary from 1 to 39366 and from 52489 to 3241135. The patent also outlines the potential chemical groups for RA, RB, and RC, indicating that these can include amino, alkoxy, ester, or hydrogen, with specific restrictions on their combinations. Additionally, the claims specify a selection of compounds based on the general formula, providing a range of possible structures for both ligands.
Furthermore, the patent encompasses applications of the described compounds in organic light-emitting devices (OLEDs), which consist of an anode, cathode, and an organic layer containing the claimed compound. The organic layer may also include a host material with various chemical groups, such as triphenylene and carbazole. The patent extends to consumer products that incorporate the OLEDs and formulations containing the claimed compounds. A method for preparing these complex compounds is also included, with specific mention of phenyl-isoquinoline as a potential component of the ligands. Overall, the patent presents a comprehensive framework for the synthesis and application of these iridium-based compounds in advanced electronic devices.
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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.
