Nitrogen-containing aromatic heterocyclic derivative and organic electroluminescence device using the same
一种芳香族杂环、衍生物的技术,应用在含氮芳香族杂环衍生物,有机场致发光元件领域,能够解决有机EL元件驱动电压、发光效率及耐久性不充分等问题
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 approach
[0194] The organic EL element of this embodiment has an element structure having at least one light-emitting layer. Specific configuration examples are shown below.
[0195] (1) Anode / luminescent layer / electron injection / transport layer / cathode
[0196] (2) Anode / hole injection / transport layer / luminescent layer / electron injection / transport layer / cathode
[0197] (3) Anode / hole injection layer / hole transport layer / light emitting layer / electron injection / transport layer / cathode
[0198] In this specification, "hole injection and transport layer" refers to "one or both of the hole injection layer and the hole transport layer", and "electron injection and transport layer" refers to "the electron injection layer and the electron transport layer". one or both of the layers".
no. 2 approach
[0200] The organic EL element of this embodiment has a tandem element configuration having at least two light-emitting layers (units including light-emitting layers).
[0201] Interposing a charge generation layer (also referred to as CGL) between the two light emitting layers, an electron transport region can be provided on each cell.
[0202] Specific configuration examples of series elements are shown below.
[0203] Anode / hole injection / transport layer / fluorescence layer / charge generation layer / fluorescence layer / electron injection / transport layer / cathode
[0204] Anode / hole injection / transport layer / fluorescence layer / electron injection / transport layer / charge generation layer / fluorescence layer / cathode
[0205] Anode / hole injection / transport layer / fluorescence layer / electron injection / transport layer / charge generation layer / fluorescence layer / blocking layer / cathode
[0206] Anode / hole injection / transport layer / phosphorescent layer / charge generation layer / fluorescence la...
no. 3 approach
[0209] The organic EL element of this embodiment includes a plurality of light emitting layers, and has a charge blocking layer between arbitrary two light emitting layers of the plurality of light emitting layers.
[0210] As a preferable structure of the organic EL element according to the third embodiment, as described in Patent No. 4134280, U.S. Laid-Open Patent Publication US2007 / 0273270A1, and International Laid-Open Publication WO2008 / 023623A1, in accordance with the anode, the first light emission Layer, charge blocking layer, second light-emitting layer, and cathode are sequentially stacked, with an electron transport region having a barrier layer for preventing diffusion of triplet excitons between the second light-emitting layer and cathode. Here, the charge blocking layer refers to a layer that serves the purpose of regulating the injection of carriers into the light-emitting layer by providing an energy barrier of the HOMO level and the LUMO level between adjacent ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com