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WO2009028832A3 - Hybrid white organic light emitting device and method of manufacturing the same - Google Patents

Hybrid white organic light emitting device and method of manufacturing the same Download PDF

Info

Publication number
WO2009028832A3
WO2009028832A3 PCT/KR2008/004869 KR2008004869W WO2009028832A3 WO 2009028832 A3 WO2009028832 A3 WO 2009028832A3 KR 2008004869 W KR2008004869 W KR 2008004869W WO 2009028832 A3 WO2009028832 A3 WO 2009028832A3
Authority
WO
WIPO (PCT)
Prior art keywords
emission layer
fluorescent
oled
light emitting
same
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2008/004869
Other languages
French (fr)
Other versions
WO2009028832A2 (en
Inventor
Jeong Ik Lee
Hye Yong Chu
Sung Mook Chung
Lee Mi Do
Sang Hee Park
Chi Sun Hwang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electronics and Telecommunications Research Institute ETRI
Original Assignee
Electronics and Telecommunications Research Institute ETRI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020080066177A external-priority patent/KR100957781B1/en
Application filed by Electronics and Telecommunications Research Institute ETRI filed Critical Electronics and Telecommunications Research Institute ETRI
Priority to US12/664,040 priority Critical patent/US20100187552A1/en
Publication of WO2009028832A2 publication Critical patent/WO2009028832A2/en
Publication of WO2009028832A3 publication Critical patent/WO2009028832A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2101/00—Properties of the organic materials covered by group H10K85/00
    • H10K2101/10—Triplet emission
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2101/00—Properties of the organic materials covered by group H10K85/00
    • H10K2101/27—Combination of fluorescent and phosphorescent emission
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2101/00—Properties of the organic materials covered by group H10K85/00
    • H10K2101/30—Highest occupied molecular orbital [HOMO], lowest unoccupied molecular orbital [LUMO] or Fermi energy values

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

Provided are a hybrid white organic light emitting diode (OLED) and a method of fabricating the same. A HOMO level difference between a fluorescent emission layer and an electron transport layer in an organic emission layer (OLED) becomes higher than that between the other layers or a LUMO level difference between a fluorescent emission layer and a hole transport layer is higher than that between the other layers, so that a recombination region is restricted to a part of an emission layer to obtain high-efficiency fluorescent light emission. In addition, triplet excitons that are not used in a fluorescent emission layer are transferred to an auxiliary emission layer formed to be spaced apart from a recombination region by a predetermined distance to emit light in a different color from the fluorescent emission layer, so that both singlet and triplet exicitons formed in the OLED are used to obtain high-efficiency white light emission.
PCT/KR2008/004869 2007-08-24 2008-08-21 Hybrid white organic light emitting device and method of manufacturing the same Ceased WO2009028832A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/664,040 US20100187552A1 (en) 2007-08-24 2008-08-21 Hybrid white organic light emitttng device and method of manufacturing the same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20070085424 2007-08-24
KR10-2007-0085424 2007-08-24
KR10-2008-0066177 2008-07-08
KR1020080066177A KR100957781B1 (en) 2007-08-24 2008-07-08 Hybrid white organic electroluminescent device and manufacturing method thereof

Publications (2)

Publication Number Publication Date
WO2009028832A2 WO2009028832A2 (en) 2009-03-05
WO2009028832A3 true WO2009028832A3 (en) 2009-04-23

Family

ID=40387999

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/004869 Ceased WO2009028832A2 (en) 2007-08-24 2008-08-21 Hybrid white organic light emitting device and method of manufacturing the same

Country Status (1)

Country Link
WO (1) WO2009028832A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI610477B (en) 2010-11-11 2018-01-01 日東電工股份有限公司 Hybrid composite emissive construct and light-emitting devices using the same
US9859517B2 (en) 2012-09-07 2018-01-02 Nitto Denko Corporation White organic light-emitting diode
US10020458B2 (en) * 2014-12-18 2018-07-10 Lg Display Co., Ltd. White organic light-emitting display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6645645B1 (en) * 2000-05-30 2003-11-11 The Trustees Of Princeton University Phosphorescent organic light emitting devices
US6727644B2 (en) * 2001-08-06 2004-04-27 Eastman Kodak Company Organic light-emitting device having a color-neutral dopant in an emission layer and in a hole and/or electron transport sublayer
US20060158104A1 (en) * 2004-12-13 2006-07-20 Toshiki Iijima Organic EL device
KR20060084733A (en) * 2005-01-20 2006-07-25 삼성에스디아이 주식회사 Organic EL device and method for manufacturing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6645645B1 (en) * 2000-05-30 2003-11-11 The Trustees Of Princeton University Phosphorescent organic light emitting devices
US6727644B2 (en) * 2001-08-06 2004-04-27 Eastman Kodak Company Organic light-emitting device having a color-neutral dopant in an emission layer and in a hole and/or electron transport sublayer
US20060158104A1 (en) * 2004-12-13 2006-07-20 Toshiki Iijima Organic EL device
KR20060084733A (en) * 2005-01-20 2006-07-25 삼성에스디아이 주식회사 Organic EL device and method for manufacturing same

Also Published As

Publication number Publication date
WO2009028832A2 (en) 2009-03-05

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