| 摘要 |
PROBLEM TO BE SOLVED: To provide an organic EL element having efficient electron injection electrodes and good working stability to improve a visual field effect better than that of previous EL elements. SOLUTION: For the organic EL composed of a positive electrode, a base board, and an organic EL layer comprising a negative electrode, a negative electrode buffer layer, an electron carrier layer, a light emitting layer, a hole carrier layer, and a positive electrode buffer layer, an electron carry efficiency is accurately controlled depending on the element structure alternately laminating the electron carrier layers and the negative electrode buffer layers more than twice. COPYRIGHT: (C)2003,JPO
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