Abstract: An organic EL element includes a light-permeable anode (2), an organic emitting layer (3), a cathode (5), and a light permeable substrate(1), wherein the organic EL element emits light at a predetermined region upon application of a current between the anode (2) and the cathode (5). The element further includes an electron injection layer (4) formed between the emitting layer (3) and the cathode (5) and having a pattern corresponding to the predetermined region to be displayed. Alternatively, the element further includes an electron obstruction layer (12) formed between the emitting layer (11) and the cathode (13) and having a pattern to restrict emission corresponding to the predetermined region not to be displayed. Alternatively, the element further includes a hole injection layer (18) formed between the anode (2) and the emitting layer (19) having a pattern corresponding to the predetermined region to be displayed.

Abstract: An organic electroluminescent element having a display quality is capable of being easily manufactured in a simple process in which the connecting-lines are layered as the metal-bus-lines with a low resistance. The element includes; a substrate carrying laminations each having an anode, organic emitting material layers made of organic compounds and a cathode. The cathode is layered on at least one of the organic emitting material layers. The substrate carrying a conductive connecting-line is electrically connected to the anode or the cathode, characterized by the connecting-line made of the same material as the cathode.

Abstract: An organic electroluminescent element comprises; a transparent substrate; an anode formed on the substrate; an emitting functional layer made of an organic material formed on the anode; and a cathode disposed on the emitting functional layer with a predetermined shape to be formed by a laser-material-processing; characterized in that a laser protective layer of a heat-resistant thin film is disposed on at least a portion to be provided with the laser-material-processing between the emitting functional layer and the anode; and alternatively or additionally in that a laser absorbing layer of a thin film with a predetermined thickness having a reflectance lower than that of the cathode with respect to a predetermined wavelength of the laser beam is formed on the cathode at a portion to be provided with the laser-material-processing.

Abstract: A method for manufacturing an organic EL display panel having a plurality of emitting portions surrounded by ramparts and arranged as a matrix.

Abstract: An organic electroluminescent display panel having a plurality of emitting portions includes; a substrate on which a plurality of first display electrodes corresponding to emitting portions are formed; electrical insulation ramparts projecting from the substrate for exposing at least portions of the first display electrodes respectively; organic function layers each including at least one organic electroluminescent medium formed on exposed portions of the first display electrodes; second display electrodes formed on the organic function layers; and each electrical insulation rampart having an overhanging portion projecting in a direction parallel to the substrate. The cathodes are patterned automatically without use of the photolithography.

Abstract: An organic electroluminescent device comprises an anode, a positive-hole transport layer made of an organic compound, an emitting layer made of an organic compound, and a cathode which are layered in sequence, further comprising an electron-injecting layer containing at least one of alkaline earth metal oxides and disposed between the emitting layer and the cathode. This device emits light at a high luminance and a high efficiency upon application of a low voltage together with reduction of the decrement of luminance in the running of emitting light of the device. Selection scope for cathode materials is expanded because of the device is free from the restriction of a low work function for the cathode layer. The cathode can be made a transparent electrode such as ITO. Anode and cathode lines may be formed with low resistance material. As a result, emitting efficiency and life time of the device is improved.

Abstract: Disclosed are organic EL elements having high environmental stability as well as high luminous efficiency and luminance. In an organic EL element comprising a transparent anode, a hole-carrying layer, a light-emitting layer and an alloy cathode consisting of a first metal Li and a stabilizing second metal Al, all laminated on a substrate, the concentration of the first metal Li contained in the alloy region with a predetermined thickness from the interface between the alloy cathode and the organic layer is controlled to a minute amount ranging from 0.005 wt. % to 0.3 wt. %.

Abstract: An organic electroluminescent device comprises a cathode, an emitting layer of organic compound including a quinoline derivative, a positive-hole transport layer of organic compound and an anode which are laminated in sequence, further comprising a metal film having a work function equal to or lower than that of the anode and partially disposed between the anode and the positive-hole transport layer. This device achieves a high luminance efficiency per se. The existence of the metal film reduces resistance values of whole anodes. The entering efficiency of the positive-hole carrier is partially decreased due to the metal film line. This metal film line decreases the waste electric current that does not contribute the emission of the emitting layer.

Abstract: Disclosed is an organic electroluminescent display apparatus that has small panels each constituted by forming light-emitting sections, each comprising an organic electroluminescent layer, a transparent electrode and a metal electrode, on one major surface of the substrate. The transparent electrode has an extending portion formed to continuously extend from one major surface of the substrate to one side surface. The associated transparent electrodes of adjoining small panels are electrically connected via an anisotropic conductive sheet which has a conductivity only in the thickness direction. This design can narrow the non-light emitting area of each joint of the small panels.