2001-043980 is referenced by 82 patents.

PROBLEM TO BE SOLVED: To provide an organic electroluminescent element provided with an effective positive electrode structure on the lower surface side for effectively extracting light from a negative electrode on the upper surface side. SOLUTION: This organic electroluminescent element comprises a positive electrode A, a negative electrode K and an organic layer 10 retained between them. The organic layer 10 includes an organic luminescent layer 103 for emitting light by the recombination of positive holes fed from the positive electrode A with electrons fed from the negative electrode K. The negative electrode K has a laminated structure of an extremely thin electron injection metal layer 11 and a transparent conductive layer 12, and is basically light-transmissive. The positive electrode A contains a metal belonging to the five or six group of the periodic table in at least a part abutting on the organic layer 10 and is basically light-reflective. The positive electrode metal is selected from chromium, molybdenum, tungsten, tantalum or niobium. The work function of the positive electrode metal is less than 4.8 eV.

Title
Organic electroluminescent element and display device
Application Number
11-214458
Publication Number
2001-043980
Application Date
July 29, 1999
Publication Date
February 16, 2001
Inventor
Asano Shin
Chiba Yasuhiro
Yamada Jiro
Hirano Takayuki
Assignee
Sony
IPC
H05B 33/14
G09F 09/30
H05B 33/26