US20250386661
2025-12-18
Electricity
H10K50/12
This patent application introduces a light-emitting device that incorporates an organometallic compound, which is a key component in the device's emission layer. The light-emitting device is designed to enhance electronic apparatuses by improving their display capabilities. The organometallic compound is identified by a specific formula, referred to as Formula 1, which details the chemical structure and potential variations of the compound. This innovation is intended to improve the performance characteristics of devices such as brightness, contrast, and response time.
Light-emitting devices are essential in creating high-quality displays due to their self-emissive nature, offering wide viewing angles and high contrast ratios. These devices typically consist of a substrate with a first electrode, followed by a hole transport region, an emission layer, an electron transport region, and a second electrode. Electrons and holes move towards the emission layer from opposite electrodes, where they recombine to form excitons, leading to light emission. The use of an organometallic compound within the emission layer is a central aspect of this technology, enhancing the device's efficiency and performance.
The organometallic compound is defined by Formula 1, which allows for various chemical configurations. The central metal (M) can be elements like platinum, iridium, or copper, while the surrounding ligands and substituents provide flexibility in tailoring the compound's properties. This flexibility enables the compound to be optimized for different devices and applications, potentially leading to improved light emission characteristics. The detailed chemical structure includes various cyclic and heterocyclic groups, along with possible substitutions that can be made to enhance the compound's performance.
The light-emitting device comprises a first electrode (anode), a second electrode (cathode), and an interlayer that includes the emission layer with the organometallic compound. The interlayer may also contain regions dedicated to hole and electron transport, each potentially composed of multiple layers such as a hole injection layer or an electron transport layer. This layered structure is designed to facilitate efficient charge transport and recombination, resulting in effective light emission. The organometallic compound can be included in various parts of the interlayer, particularly within the emission layer, as a dopant or in combination with other materials.
The light-emitting device can be integrated into a wide range of electronic apparatuses, including displays for televisions, smartphones, and wearable devices. It can also be used in lighting solutions and various types of screens, from flexible and rollable displays to high-definition monitors. The versatility of the organometallic compound allows for its adaptation to different display technologies, including transparent, curved, and stretchable displays. The invention aims to enhance the visual quality and performance of these devices, making them more efficient and versatile in various applications.