US2011089821A1PendingUtilityA1

Light emitting device having dopants in a light emitting layer

56
Assignee: CANON KKPriority: Jun 15, 2001Filed: Dec 20, 2010Published: Apr 21, 2011
Est. expiryJun 15, 2021(expired)· nominal 20-yr term from priority
Inventors:Manabu FurugoriShinjiro OkadaAkira TsuboyamaTakao TakiguchiSeishi MiuraTakashi MoriyamaSatoshi IgawaJun KamataniHironobu Iwawaki
H10K 2101/10Y10S428/917C09K 2211/1011C09K 2211/1003C09K 2211/1007C09K 11/06C09K 2211/1092C09K 2211/1014C09K 2211/1096C09K 2211/1059C09K 2211/1029H05B 33/14C09K 2211/10C09K 2211/1048C09K 2211/18C09K 2211/185C09K 2211/1018H10K 85/621H10K 50/11H10K 85/631H10K 85/324H10K 85/40H10K 85/626H10K 85/611H10K 85/633H10K 2102/103H10K 85/342
56
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

A light emitting device comprises a pair of electrodes and an organic light emitting layer between the electrodes. The organic light emitting layer includes a host material, a first phosphorescent dopant, and a second dopant different from the first phosphorescent dopant. The amount of the second dopant is greater than the amount of the first dopant in the organic light emitting layer. The host material, the first phosphorescent dopant and the second dopant are mixed throughout the organic light emitting layer.

Claims

exact text as granted — not AI-modified
1 .- 31 . (canceled) 
     
     
         32 . A light-emitting device comprising:
 a pair of electrodes; and   an organic light-emitting layer disposed between the electrodes,   wherein the organic light-emitting layer includes a host material, a first phosphorescent dopant, and a second dopant different from the first phosphorescent dopant, and an amount of the second dopant is greater than an amount of the first phosphorescent dopant in the organic light-emitting layer, and   wherein the host material, the first phosphorescent dopant and the second dopant are mixed throughout the organic light-emitting layer.   
     
     
         33 . A light-emitting device according to  claim 32 , wherein the first phosphorescent dopant is a metal organic complex compound. 
     
     
         34 . A light-emitting device according to  claim 32 , wherein the center metal of the first phosphorescent dopant is iridium. 
     
     
         35 . A display apparatus having a display section comprising the light-emitting device of  claim 32 . 
     
     
         36 . An illumination apparatus comprising the light-emitting device of  claim 32 . 
     
     
         37 . A liquid crystal display apparatus having a back light comprising the light-emitting device of  claim 32 . 
     
     
         38 . A light-emitting device according to  claim 32 , wherein the second dopant is a non-light-emitting compound. 
     
     
         39 . A light-emitting device according to  claim 32 , wherein the second dopant is CBP.

Join the waitlist — get patent alerts

Track US2011089821A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.