Organic electroluminescent element and device

Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C313S506000

Reexamination Certificate

active

07906897

ABSTRACT:
An organic electroluminescent (EL) element includes at least a positive hole transport layer, a light emitting layer and an electron transport layer between at least a pair of electrodes, wherein the light emitting layer contains therein at least two light emitting materials having different Ea values or Ip values and emitting phosphorescence having the same color as each other, and among the two light emitting materials, a light emitting material having a larger Ea value or Ip value is contained at a higher density in a region of the light emitting layer in the vicinity of the positive hole transport layer, while a light emitting material having a smaller Ea value or Ip value is contained at a higher density in a region of the light emitting layer in the vicinity of the electron transport layer.

REFERENCES:
patent: 5281489 (1994-01-01), Mori et al.
patent: 6869695 (2005-03-01), Thompson et al.
patent: 2004-522276 (2004-07-01), None
patent: 2005-38763 (2005-02-01), None
patent: 2005038763 (2005-02-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Organic electroluminescent element and device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Organic electroluminescent element and device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Organic electroluminescent element and device will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2733367

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.