Light emitting element

Details Light emitting element Light emitting element

2005-09-26

2010-06-15

Patel, Nimeshkumar D. (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C428S690000

Reexamination Certificate

active

07737626

ABSTRACT:
It is an object of the present invention to provide a light-emitting element having a structure in which the drive voltage is relatively low. Further, it is an object of the invention to provide a highly reliable light emitting device by alleviating the stress to the light emitting layer. Further, it is another object of the invention to provide a light emitting element having a structure in which increase in the drive voltage over time is small. It is an object of the present invention to provide a display device in which the drive voltage is low and increase in the drive voltage over time is small and which can withstand long-term use. In a light emitting element, a layer in contact with an electrode serves as a hole generating layer such as an organic compound layer containing a P-type semiconductor or an electron accepting material, a light emitting layer is provided between hole generating layers, an electron generating layer is formed between the hole generation layer on the cathode side and the light emitting layer.

REFERENCES:
patent: 5989737 (1999-11-01), Xie et al.
patent: 6013384 (2000-01-01), Kido et al.
patent: 6172459 (2001-01-01), Hung et al.
patent: 6249085 (2001-06-01), Arai
patent: 6423429 (2002-07-01), Kido et al.
patent: 6483236 (2002-11-01), Hung
patent: 6486601 (2002-11-01), Sakai et al.
patent: 6566807 (2003-05-01), Fujita et al.
patent: 6573650 (2003-06-01), Aoki et al.
patent: 6589673 (2003-07-01), Kido et al.
patent: 6602619 (2003-08-01), Lin et al.
patent: 6674098 (2004-01-01), Niki et al.
patent: 6872472 (2005-03-01), Liao et al.
patent: 6917159 (2005-07-01), Tyan et al.
patent: 7141817 (2006-11-01), Nishi et al.
patent: 7158161 (2007-01-01), Gyoutoku et al.
patent: 7387904 (2008-06-01), Saito et al.
patent: 7462883 (2008-12-01), Kumaki et al.
patent: 2003/0111666 (2003-06-01), Nishi et al.
patent: 2003/0189401 (2003-10-01), Kido et al.
patent: 2004/0185299 (2004-09-01), Ly
patent: 2004/0234814 (2004-11-01), Nakaya et al.
patent: 2005/0067951 (2005-03-01), Richter et al.
patent: 2005/0084712 (2005-04-01), Kido et al.
patent: 2005/0084713 (2005-04-01), Kido et al.
patent: 2005/0098207 (2005-05-01), Matsumoto et al.
patent: 2005/0106419 (2005-05-01), Endoh et al.
patent: 2005/0170208 (2005-08-01), Yatsunami et al.
patent: 2006/0008740 (2006-01-01), Kido et al.
patent: 2006/0027830 (2006-02-01), Kumaki et al.
patent: 2007/0114527 (2007-05-01), Kumaki et al.
patent: 2007/0182317 (2007-08-01), Kido et al.
patent: 2007/0200125 (2007-08-01), Ikeda et al.
patent: 2007/0221912 (2007-09-01), Jeong et al.
patent: 0 855 848 (1998-07-01), None
patent: 0 948 063 (1999-10-01), None
patent: 1 160 891 (2001-12-01), None
patent: 1 351 558 (2003-10-01), None
patent: 1 530 245 (2005-05-01), None
patent: 2-288092 (1990-11-01), None
patent: 3-274695 (1991-12-01), None
patent: 06-267658 (1994-09-01), None
patent: 9-63771 (1997-03-01), None
patent: 10-270171 (1998-10-01), None
patent: 11-251067 (1999-09-01), None
patent: 11-297474 (1999-10-01), None
patent: 11-307259 (1999-11-01), None
patent: 11-307264 (1999-11-01), None
patent: 2000-315580 (2000-11-01), None
patent: 2002-015873 (2002-01-01), None
patent: 2003-229278 (2003-08-01), None
patent: 2003-0272860 (2003-09-01), None
patent: 2005-26121 (2005-01-01), None
patent: 2005-166637 (2005-06-01), None
patent: 2005-251587 (2005-09-01), None
Tang, C.W. et al, “Organic Electroluminescent Diodes,” Appl. Phys. Lett., vol. 51, No. 12, pp. 913-915, Sep. 21, 1987.
Tokito, S. et al, “Metal Oxides as a Hole-Injecting Layer for an Organic Electroluminescent Device,” J. Phys. D. Appl. Phys., vol. 29, pp. 2750-2753, (1996).
International Search Report re application No. PCT/JP2005/018226, dated Nov. 15, 2005.
Written Opinion re application No. PCT/JP2005/018226, dated Nov. 15, 2005.

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