Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ORGANIC ELECTROLUMINESCENT ELEMENT
Document Type and Number:
Japanese Patent JP2000164359
Kind Code:
A
Abstract:

To provide high emitted light luminance with application of low voltage by composing an electron injection layer of the inorganic compound, and including the organic luminescent material having a specified electron mobility and a specified hole mobility in the organic luminescent layer.

A positive electrode layer, an organic luminescent layer, an electron injection layer and a negative electrode layer are laminated in order on a substrate so as to form an organic EL element. The electron injection layer is composed of the inorganic compound (Li2O, CaO, LiF, CaF2 or the like), and the organic luminescent layer includes the organic luminescent material having electron mobility (μe) and hole mobility (μh) satisfying an expression μe≥1×10-7 cm2/V.s, μn>μe>μh/1000. The organic luminescent layer includes at least one of the aromatic compound having a styryl group expressed with a formula [Ar1 means an aromatic group having 6-40 carbon, Ar2, Ar3, Ar4 respectively means a hydrogen atom or an aromatic group having 6-40 carbon, and at least one of Ar1, Ar2, Ar3, Ar4 is an aromatic group, and the number of condensation (n) is an integer 1-6].


More Like This:
JP2012001513NEW ORGANIC COMPOUND AND ORGANIC LIGHT-EMITTING ELEMENT HAVING THE SAME
WO/2012/099607COPOLYMERS FOR LUMINESCENCE ENHANCEMENT IN REFLECTIVE DISPLAY APPLICATIONS
WO/2018/117241LUMINESCENT MATERIAL, COMPOUND, AND ORGANIC LUMINESCENT ELEMENT
Inventors:
KAWAMURA HISAYUKI
HOSOKAWA CHISHIO
Application Number:
JP33465998A
Publication Date:
June 16, 2000
Filing Date:
November 25, 1998
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
IDEMITSU KOSAN CO
International Classes:
C09K11/06; C23C28/00; H01L33/02; H01L51/50; H05B33/14; H05B33/22; (IPC1-7): H05B33/14; C09K11/06; C23C28/00; H01L33/00; H05B33/22
Domestic Patent References:
JPH08124679A1996-05-17
JPH0917574A1997-01-17
JPH0890832A1996-04-09
JPH10302966A1998-11-13
JPH08199162A1996-08-06
JPH08333283A1996-12-17
JPH08333569A1996-12-17
JPH10261488A1998-09-29
JPH08193191A1996-07-30
JPH09268284A1997-10-14
JPH10289786A1998-10-27
JPH07235378A1995-09-05
JPH08311442A1996-11-26
JPH08330073A1996-12-13
JPH10270166A1998-10-09
JPH06163158A1994-06-10
JPH08273832A1996-10-18
JPH02291696A1990-12-03
JPH03790A1991-01-07
JPH03114197A1991-05-15
JPH04178487A1992-06-25
JPH0578655A1993-03-30
JPH0785972A1995-03-31
JPH07126616A1995-05-16
Other References:
LIN L B ET AL.: "High electron mobility in bipolar composites of organic molecules", APPLIED PHYSICS LETTER, vol. 69, no. 13, JPN7008000453, 2 December 1996 (1996-12-02), pages 3495 - 3497, ISSN: 0000966516
MALLIARAS G G ET AL.: "The roles of injection and mobility in organic light emitting diode", JOURNAL OF APPLIED PHYSICS, vol. 83, no. 10, JPN7008000454, 15 May 1998 (1998-05-15), pages 5399 - 5403, XP012043852, ISSN: 0000966517, DOI: 10.1063/1.367369
Attorney, Agent or Firm:
Kihei Watanabe



 
Previous Patent: ORGANIC THIN FILM ELECTROLUMINESCENT ELEMENT AND DRIVE METHOD THEREOF

Next Patent: ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE AND METHOD OF DRIVING ORGANIC EL ELEMENT