Abstract: An organic electroluminescent device comprising one or more organic thin film layers, at least one of the organic thin film layers containing a compound having a cyclohexylidenemethine group. This device has improved light-emitting properties such as luminance and luminous efficiencies, and no limitations on film deposition method in fabrication processes.

Abstract: An organic EL device comprising an anode, a cathode, and one or more organic thin-film layers having a light-emitting layer sandwiched between the anode and the cathode, the organic thin-film layers including, either singly or as a mixture, a perylene compound represented by a general formula [1] or a benzoperylene compound represented by a general formula [2].

Abstract: There is provided an electroluminescent device including an anode, a cathode, and at least one organic layer sandwiched between the anode and the cathode, the organic layer including at least a red light emitting layer, the organic layer containing a compound represented with the chemical formula C1, alone or in combination: 1

Abstract: A high-brightness and long-life organic electroluminescent device, which employs, as a material for constituting an organic thin film interposed between an anode and a cathode, a specific fluoranthene compound represented by the following general formula [I] or a biphenylene compound represented by the following general formula [II]: 1

Abstract: A high-luminance organic EL device employs a particular tetrabenzo[de,hi,op,st]pentacene compound represented by the general formula (1): 1

Abstract: An electroluminescent device including an anode, a cathode, and at least one organic layer sandwiched between the anode and the cathode, the organic layer including at least a light emitting layer containing a compound represented with the chemical formula C3, alone or in combination:

Abstract: An organic EL device including a substrate, at least one organic thin-film layer overlying the main surface, and a pair of electrodes sandwiching therebetween the organic thin-film layer, at least one of the electrodes being a metallic electrode, the organic thin film layer defining a recombination electroluminescence region which is apart from the metallic electrode by at least 100 nm and has a periodic structure. In the organic EL device of the present invention, the emitted light is efficiently taken out by increasing the distance between the EL light-emitting region and the metal electrode for separating the light-emitting location from the metal electrode.

Abstract: A specific bis(diarylamino)arylene compound expressed in the following general formula [1.1] is used as a constituent material of an organic EL device. By this, luminescent brilliance and EL property are improved, and further, reduction in luminescent property is suppressed, and durability is improved.

Abstract: An organic EL device including at least an anode, a cathode and an organic light-emitting zone with high brightness is provided. A mixture containing at least two compounds is used for a light-emitting zone and the spectrum of the luminescence from light-emitting zone includes at least one peak at a wavelength which is different from neither of fluorescent peak positions of the compounds included in light-emitting zone.

Abstract: An organic electroluminescent device comprising one or more organic thin film layer(s) placed between an anode and a cathode, at least one of said layer being a luminescent layer, the organic thin film layer containing a compound of formula [I]: 1

Abstract: The present invention provides an organic EL device that allows the obtaining of favorable color emission with high efficiency. The organic EL device of the present invention has at least an emission layer 4 and an electron transporting layer 5 between an anode 2 and cathode 6, and an intermediate layer 7 is provided between the emission layer 4 and electron transporting layer 5 that has a film thickness of 1 to 20 nm and is comprised of a material having an ionization potential larger than that of the material used for the emission layer 4.

Abstract: An organic EL device which comprises an anode, a cathode and one or more than one organic thin-film layer including a light-emitting layer contains a compound represented by the following formula (1): wherein R1 to R16 each independently represents a hydrogen atom, a halogen atom, a nitro group, a cyano group, a carboxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, a substituted or unsubstituted amino group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group or a substituted or unsubstituted alkoxycarbonyl group; and any two of R1 to R14 may form a ring. According to the present invention, an organic electroluminescent device having high brightness can be provided.

Abstract: A photoreceptor for electrophotography comprises a photosensitive layer containing an effective amount of oxytitanium phthalocyanine crystal having strong peaks at 9.6.degree., 24.2.degree. and 27.3.degree. and weak and broad peaks at approximately 11.6.degree., 13.5.degree., 14.3.degree. and 18.1.degree. in Bragg angle 2.theta..+-.0.2.degree. by CuK.alpha. characteristic X-ray diffraction, and an exothermic peak at 266.degree. C. in differential scanning calorimetry. The oxytitanium phthalocyanine crystal has a small grain size and a high stability and the photoreceptor has a high photosensitivity to light having a long wavelength.

Abstract: A multi-channel information item selection apparatus for outputting selected items when requested, has a plurality of frequently-requested information items, such as items of music, moving or still pictures, etc., stored in a first storage apparatus having a relatively high read-out speed, and a plurality of less frequently requested items stored in a second storage apparatus having a relatively low read-out speed, e.g. an appropriate speed for subsequent audio or video reproduction processing of the items. Items that are read out from the first storage apparatus are temporarily loaded into regions of a buffer memory at high speed and thereafter read out at the lower speed via a switch circuit to the respective requesting locations, so that a plurality of frequently-requested items can be simultaneously read out in parallel from the buffer memory. Items read out from the second storage apparatus are transferred directly through the switch circuit to the requesting locations.