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US20010049030A1
Publication/Patent Number: US20010049030A1
Publication date: 2001-12-06
Application number: 09/193,500
Filing date: 1998-11-17
Abstract: An organic EL device capable of preventing a deterioration in luminous section and increasing an effective area of a luminous section and current gain thereof. The organic EL device includes at least one first electrode made of a transparent electrode material, at least one luminous section made of an organic EL material and formed on the first electrode, and at least one second electrode formed on the luminous section. The luminous section is arranged on the first electrode so that the first electrode has an annular upper surface portion which is not covered with the luminous section left on an upper surface thereof in a manner to surround the luminous section. The second electrode is formed so that the luminous section has an annular upper surface portion which is not covered with the second electrode left on an upper surface thereof in a manner to surround the second electrode. The organic EL device also includes at least one insulating side wall structure made of an insulating material, formed into an annular shape and arranged so as to cover the annular upper surface portion of the first electrode, an outer peripheral side surface of the luminous section, the annular upper surface portion of the luminous section and an outer peripheral side surface of the second electrode. The organic EL device also includes an insulating protective layer formed of an insulating material so as to cover the insulating side wall structure and an exposed portion of the first electrode and provided with holes through which an upper surface portion of the second electrode is exposed and at least one third electrode formed on the insulating protective layer and connected to the second electrode through the holes of the insulating protective layer. An organic EL device capable of preventing a deterioration in luminous section and increasing an effective area of a luminous section and current gain thereof. The organic EL device includes at least one first electrode made of a transparent electrode material, at least one ...more ...less