# US 9,518,217 B2 · Transition metal carbene complexes and the electroluminescent application thereof

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- Number: US 9,518,217 B2
- Document ID: US9518217B2
- Status: Granted
- Kind: B2
- Application number: 13/603,669
- Filed: 2012-09-05
- Published: 2013-03-07
- Granted: 2016-12-13
- Earliest claimed: 2011-09-06
- Assignees: E Ink Holdings Inc.
- Applicants: Chien-Hong Cheng; Kun-Yi Lu; Yu-Han Ou Yang; Cheng-Han Hsieh
- Inventors: Chien-Hong Cheng; Kun-Yi Lu; Yu-Han Ou Yang; Cheng-Han Hsieh
- Web page: https://patentgrep.com/patent/US9518217B2

## CPC

- H10K 85/342: {comprising iridium}
- C07F 15/0033: {Iridium compounds}
- C09K 11/06: containing organic luminescent materials
- H05B 33/10: Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
- C09K 2211/1007: Non-condensed systems
- C09K 2211/1011: Condensed systems
- C09K 2211/1029: containing one nitrogen atom as the heteroatom
- C09K 2211/1044: containing two nitrogen atoms as heteroatoms
- C09K 2211/185: of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
- H10K 50/11: characterised by the electroluminescent [EL] layers
- H10K 2101/10: Triplet emission
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

This invention provides transition metal carbene complexes and the electroluminescent application thereof. Through employing different N^N heteroleptic ligand, as the following, the transition metal carbene complex can display wide-range color tuning ability from deep blue to red. The mentioned transition metal carbene complex can be applied in luminescent device, and the luminescent device can display wide-range color tuning ability with high luminescent efficiency while employing different N^N heteroleptic ligand in the transition metal carbene complex.

## Claims

### Claim 1

A transition metal carbene complex, represented by the following formula:

### Claim 2

An electroluminescent device, comprising a pair of electrodes and at least one organic layer disposed between said electrodes, said at least one organic layer comprises an emitting layer and a transition metal carbene complex, wherein said transition metal carbene complex is represented by the following formula: