Abstract: The present organic EL devices have at least one luminescent layer and a cathode sequentially provided on their anode, which luminescent layer contains an electron-transporting material, a hole-transporting material, and a luminescent dopant. Preferably, an electron-transporting layer is further provided between the luminescent layer and the cathode. According to the present invention, organic EL devices can be provided giving improved whiteness, colour reproducibility, luminescent efficiency, and lifetime compared to conventional ones.

Abstract: Organic EL devices having a light-emitting layer having a fluorescent dopant, a light-emitting layer having a phosphorescent dopant, and a non-light-emitting interface layer provided between an anode and a cathode wherein the light-emitting layer having a fluorescent dopant is provided nearer to the cathode than the light-emitting layer having a phosphorescent dopant and wherein the non-light-emitting interface layer is provided between the light-emitting layer having a fluorescent dopant and the light-emitting layer comprising a phosphorescent dopant.

Abstract: An organic electroluminescent display panel includes a substrate, a plurality of first electrodes forming parallel stripes on the substrate, a plurality of electrical insulating partitions intersecting the first electrodes, an organic electroluminescent layer formed on the first electrodes and the partitions, a plurality of second electrodes located on the organic electroluminescent layer, and a sealing film. The second electrodes form stripes parallel with the partitions. An organic electroluminescent element is formed at each intersection of the first and second electrodes. The sealing film covers exposed portions of the first electrodes, the organic electroluminescent layer, the partitions, and the second electrodes. Each partition has an inverse tapered portion with a widened distal end.

Abstract: An organic electroluminescent device of the present invention includes a substrate, an anode located on the substrate, an organic layer located on the anode, and a cathode located on the organic layer. The organic layer includes a light emitting layer containing a fluorescent material and a light emitting layer containing a phosphorescent material. As compared with the light emitting layer containing a phosphorescent material, the light emitting layer containing a fluorescent material is located close to the cathode.

Abstract: The electron transport layer contained in the organic EL device according to the present invention contains at least a first organic compound and a second organic compound. The first organic compound possesses higher electron mobility than the second organic compound, and the second organic compound possesses a higher glass transition temperature than the first organic compound. For this reason, the organic EL device according to the present invention has a long life and a high luminous efficiency. The first organic compound is preferably a silole derivative, and the second organic compound is preferably a quinolinolate metal complex.

Abstract: The organic EL device of the present invention includes a plurality of organic compound-containing layers provided between a cathode and an anode. Of two of the organic compound-containing layers adjacent to each other, one layer positioned nearer the anode has electron mobility lower than that of the other layer positioned nearer the cathode. Accordingly, the organic EL device of the present invention has a high luminous efficiency and a long half-life of the initial luminance.

Abstract: The present invention provides organic EL devices which have on their anode at least a light-emitting layer, an electron-injecting-transporting layer, and a cathode giving an elongated lifetime, organic EL devices giving a superior whiteness, a higher light-emitting efficiency, and an elongated lifetime compared to conventional ones, and color displays using such organic EL devices. On anode (10), hole-injecting-transporting layer (11), light-emitting layer (12), non-light-emitting layer (13), electron-injecting-transporting layer (14), and cathode (15) in this order are laminated. Otherwise, on an anode, a hole-injecting layer, a hole-transporting layer, a red light-emitting layer, a blue light-emitting layer, an electron-transporting layer, an electron-injecting layer, and a cathode in this order are laminated.

Abstract: An organic EL device including between an anode and a cathode an organic layer including: a light-emitting layer containing a fluorescent dopant; a light-emitting layer containing a phosphorescent dopant; and a bipolar layer, in which the bipolar layer is provided between the light-emitting layer containing a fluorescent dopant and the light-emitting layer containing a phosphorescent dopant.

Abstract: Organic EL devices having a light-emitting layer comprising a fluorescent dopant, a light-emitting layer comprising a phosphorescent dopant, and a non-light-emitting interface layer provided between an anode and a cathode wherein the light-emitting layer comprising a fluorescent dopant is provided nearer to the cathode than the light-emitting layer comprising a phosphorescent dopant and wherein the non-light-emitting interface layer is provided between the light-emitting layer comprising a fluorescent dopant and the light-emitting layer comprising a phosphorescent dopant.

Abstract: An organic electroluminescence device comprising a substrate, a first electrode, an organic electroluminescence layer and a second electrode laminated on the substrate in this order, and a passivation layer laminated on the outside of the second electrode. A film thickness t, which is a distance from a surface of the first electrode to the outer surface of the passivation layer in an area devoid of any foreign particle on a portion of the first electrode associated with the organic EL layer, is larger than the size of any foreign particle which exists on the first electrode.

Abstract: An organic electroluminescent device of the present invention includes a substrate, an anode, an organic layer having a light emitting layer, and a cathode capable of transmitting light. The cathode has an electron injection layer of calcium and a protective layer of silver. The protective layer covers the surface of the electron injection layer.

Abstract: A process is disclosed for purifying elastase by precipitating elastase from an aqueous, elastase-containing solution, in which the electroconductivity of said aqueous solution is adjusted to 3 millimhos per centimeter or less and the pH of the solution is adjusted to a value of from 2 to 5. The electroconductivity of said aqueous solution is preferably adjusted to 3 millimhos per centimeter or less by means of ultrafiltration.