Light emitting device

Details Light emitting device Light emitting device

2011-01-11

2011-01-11

Louie, Wai-Sing (Department: 2814)

Active solid-state devices (e.g., transistors, solid-state diode

Organic semiconductor material

C257S079000, C257S089000, C257SE51001

Reexamination Certificate

active

07868324

ABSTRACT:
By doping an organic compound functioning as an electron donor (hereinafter referred to as donor molecules) into an organic compound layer contacting a cathode, donor levels can be formed between respective LUMO (lowest unoccupied molecular orbital) levels between the cathode and the organic compound layer, and therefore electrons can be injected from the cathode, and transmission of the injected electrons can be performed with good efficiency. Further, there are no problems such as excessive energy loss, deterioration of the organic compound layer itself, and the like accompanying electron movement, and therefore an increase in the electron injecting characteristics and a decrease in the driver voltage can both be achieved without depending on the work function of the cathode material.

REFERENCES:
patent: 4849314 (1989-07-01), Blanchet-Fincher et al.
patent: 5616287 (1997-04-01), Finter et al.
patent: 5943154 (1999-08-01), Nakayama
patent: 5998803 (1999-12-01), Forrest et al.
patent: 6013384 (2000-01-01), Kido et al.
patent: 6097147 (2000-08-01), Baldo et al.
patent: 6380687 (2002-04-01), Yamazaki
patent: 6501466 (2002-12-01), Yamagishi et al.
patent: 6538390 (2003-03-01), Fujita et al.
patent: 6552496 (2003-04-01), Yamazaki
patent: 6566807 (2003-05-01), Fujita et al.
patent: 6580212 (2003-06-01), Friend
patent: 6589673 (2003-07-01), Kido et al.
patent: 6597111 (2003-07-01), Silvernail et al.
patent: 6639357 (2003-10-01), Parthasarathy et al.
patent: 6689491 (2004-02-01), Nii et al.
patent: 6750609 (2004-06-01), Aziz et al.
patent: 6765549 (2004-07-01), Yamazaki et al.
patent: 6774573 (2004-08-01), Yamazaki
patent: 7074500 (2006-07-01), Pfeiffer et al.
patent: 7141817 (2006-11-01), Nishi et al.
patent: 7256422 (2007-08-01), Yamazaki
patent: 2002/0113545 (2002-08-01), Adachi et al.
patent: 2002/0186214 (2002-12-01), Siwinski
patent: 2003/0062523 (2003-04-01), Bae et al.
patent: 1279518 (2001-01-01), None
patent: 0 855 848 (1998-07-01), None
patent: 1 017 118 (2000-07-01), None
patent: 1 065 723 (2001-01-01), None
patent: 1 089 361 (2001-04-01), None
patent: 1 089 290 (2001-05-01), None
patent: 2-213088 (1990-08-01), None
patent: 9-59614 (1997-03-01), None
patent: 10-270171 (1998-10-01), None
patent: 2000-196140 (2000-07-01), None
patent: 2001-102175 (2001-04-01), None
patent: 2001-222256 (2001-08-01), None
patent: 2001-244079 (2001-09-01), None
patent: 2003-86381 (2003-03-01), None
Tang, C.W. et al, “Organic Electroluminescent Diodes,” Applied Physics Letters, vol. 51, No. 12, Sep. 21, 1987, pp. 913-915.
Hung, L.S. et al, “Enchanced Electron Injection in Organic Electroluminescence Devices Using an A1/LiF Electrode,” Applied Physics Letters, vol. 70, No. 2, Jan. 13, 1997, pp. 512-154.
Blochwitz, J. et al, “Low Voltage Organic Light Emitting Diodes Featuring Doped Phthalocyanine as Hole Transport Material,” Applied Physics Letters, vol. 73, No. 6, Aug. 10, 1998, pp. 729-731.
“High Luminance Thin Film EL element Using Li Alloy Cathode,” Partial translation of 51stJapanese Society of Applied Physics Annual Meeting, Digest 28a-PB-4, p. 1040.
Office Action re Japanese Patent Application No. JP 2002-343617, dated Jan. 6, 2005, (with partial English translation).
Office Action re Chinese patent application No. CN02154825.0, dated Aug. 3, 2007 (with English translation).

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