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Hirohito Yoneyama, Kanagawa JP

Hirohito Yoneyama, Kanagawa JP

Patent application numberDescriptionPublished
20080238832ORGANIC ELECTROLUMINESCENT DEVICE AND DISPLAY DEVICE - The invention provides an organic electroluminescent device having at least an anode and a cathode forming a pair of electrodes. At least one electrode being transparent or translucent, and a buffer layer and an organic compound layer is disposed between the anode and the cathode. The organic compound layer has one or more layers including at least a light-emitting layer. At least one of the layers of the organic compound layer comprising at least one specific charge-transporting polyether. At least one of the layers having the charge-transporting polyether is provided in contact with the buffer layer. The buffer layer is provided in contact with the anode and has at least one charge injection material selected from the group consisting of an inorganic oxide, an inorganic nitride, and an inorganic oxynitride. The invention further provides a display device using the organic electroluminescent device.10-02-2008
20080311425ORGANIC ELECTROLUMINESCENT DEVICE AND DISPLAY DEVICE - The invention provides an organic electroluminescent device having an electrode pair of an anode and a cathode, at least one of which is transparent or translucent, and an organic compound layer disposed between the anode and the cathode, the organic compound layer having two or more layers including a buffer layer and a light-emitting layer. At least one of the layers of the organic compound layer has a specific charge-transporting polyether. The buffer layer is provided in contact with the anode and having at least a crosslinked compound formed by using at least one charge injection material having a specific substituted silicon group. The invention further provides a display device having at least a substrate, plural organic electroluminescent devices disposed on the substrate in a matrix form, and a driving unit to drive the organic electroluminescent devices, each of the plural organic electroluminescent devices is the organic electroluminescent device.12-18-2008
20090001876Organic electroluminescent device and display device - An organic electroluminescent device, having an organic compound layer including two or more layers including at least a buffer layer and an emitting layer, wherein at least one of the organic compound layers other than the buffer layer contains at least one charge-transporting polyester represented by Formula (I-1) or (I-2), and the buffer layer is formed in contact with an anode and contains a crosslinked compound formed by using at least one charge injection material containing a substituted silicon group and represented by Formula (III).01-01-2009
20090039774ORGANIC ELECTROLUMINESCENCE ELEMENT AND DISPLAY DEVICE - An organic electroluminescence element includes a pair of electrodes composed of an anode and a cathode, at least one of which is transparent or semitransparent, and one or more organic compound layers disposed between the pair of electrodes, wherein at least one of the organic compound layers comprises at least one charge-transporting polyester consisting of repeating units containing, as a partial structure, at least one structure represented by the following formula (I-1).02-12-2009
20100133995Novel thiophene-containing compound and thiophene-containing compound polymer, organic electroluminescent device, production method thereof, and image display medium - An organic electroluminescent device with a pair of electrodes having an anode and a cathode, and one or more organic compound layers disposed therebetween. One of the anode or the cathode is transparent or semitransparent. One of the organic compound layers includes a charge-transporting polyester having a repeating structure containing at least one structure selected from the structures represented by the following formulae as a partial structure:06-03-2010
20100137553Novel thiophene-containing compound and thiophene-containing compound polymer, organic electroluminescent device, production method thereof, and image display medium - A thiophene-containing compound polymer represented by06-03-2010
20100327779ORGANIC ELECTROLUMINESCENT DEVICE, EXPOSURE DEVICE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, DISPLAY APPARATUS, AND METHOD FOR DRIVING ORGANIC ELECTROLUMINESCENT DEVICE - An organic electroluminescent device includes: a pair of electrodes; a first light-emitting region that is disposed between the pair of electrodes, and that emits light when a voltage is applied between the pair of electrodes such that one of the pair of electrodes serves as an anode; and a second light-emitting region that is disposed between the pair of electrodes, and that emits light when a voltage is applied between the pair of electrodes such that the other of the pair of electrodes serves as an anode.12-30-2010
20110228031EXPOSURE APPARATUS AND IMAGE FORMING APPARATUS - An exposure apparatus that emits light toward a latent-image bearing member configured to bear a latent image, the latent image formed on the latent-image bearing member being used in a developing process performed by a developing device. The exposure apparatus includes a first light-emitting unit including an organic electroluminescence element disposed along a main scanning direction of the latent-image bearing member, the first light-emitting unit emitting light toward the latent-image bearing member, and a second light-emitting unit disposed along the main scanning direction, the second light-emitting unit correcting an amount of light to which the latent-image bearing member is exposed in cooperation with the first light-emitting unit.09-22-2011

Patent applications by Hirohito Yoneyama, Kanagawa JP