Patent application number | Description | Published |
20080247434 | SEMICONDUCTOR LIGHT-EMITTING DEVICE - A semiconductor light-emitting device capable of increasing the carrier concentration of a p-type cladding layer and improving light-emitting efficiency is provided. A semiconductor light-emitting device is made of a Group II-VI compound semiconductor, and the semiconductor light-emitting device includes an active layer between an n-type cladding layer and a p-type cladding layer, in which the active layer has a Type II superlattice structure, and the junctions between the active layer and the n-type cladding layer and between the active layer and the p-type cladding layer each have a Type I structure, and the p-type cladding layer includes tellurium (Te) as a Group VI element. | 10-09-2008 |
20080298415 | SEMICONDUCTOR DEVICE - A semiconductor device having high reliability, a long lifetime and superior light emitting characteristics by applying a novel material to a p-type cladding layer is provided. A semiconductor device includes a p-type semiconductor layer on an InP substrate, in which the p-type semiconductor layer has a laminate structure formed by alternately laminating a first semiconductor layer mainly including Be | 12-04-2008 |
20090059985 | EL SEMICONDUCTOR DEVICE - An n-type cladding layer structure which has good luminescence properties without the use of substances corresponding to RoHS Directive and a high Cl-doping efficiency, i.e. which facilitates the manufacture of a semiconductor optical element and device with low crystal defects and high reliability, and an active layer and a p-type cladding layer therefor are provided. The n-type layer being lattice matched to an InP substrate and containing Group II-VI compound as a main ingredient is a Group II-VI compound semiconductor, in which the Group II elements consist of Mg, Zn, and Be and the Group VI elements consist of Se and Te. The n-type layer of the present invention is characterized by a large energy gap, high energy of the bottom of a conduction band that is effective for suppress the Type II luminescence, high carrier concentration, and low crystal defects attributed to a good quality crystallinity. | 03-05-2009 |
20090141763 | SEMICONDUCTOR LASER - There is disclosed a Be-containing II-VI group semiconductor laser that has a laminated structure formed on an InP substrate to continuously emit at room temperature without crystal degradation. A basic structure of the semiconductor laser is formed over the InP substrate by use of a lattice-matched II-VI group semiconductor including Be. An active layer and cladding layers are formed to be a double heterostructure with a type I band lineup, in order to increase the efficiency for injecting carriers into the active layer. The active layer and the cladding layers are also formed to enhance the light confinement to the active layer, in which the Mg composition of the p-type cladding layer is set to Mg<0.2. | 06-04-2009 |
20100040103 | SEMICONDUCTOR DEVICE - The present invention provides a semiconductor device including: a semiconductor layer including an n-type first cladding layer, an n-type second cladding layer, an active layer, a p-type first cladding layer, and a p-type second cladding layer in this order on an InP substrate. The n-type first cladding layer and the n-type second cladding layer satisfy formulas (1) to (4) below, or the p-type first cladding layer and the p-type second cladding layer satisfy formulas (5) to (8) below. | 02-18-2010 |
20110169025 | SEMICONDUCTOR OPTICAL ELEMENT ARRAY AND METHOD OF MANUFACTURING THE SAME - The present invention provides a semiconductor optical element array including: a semiconductor substrate having a main surface in which a plurality of concave portions is formed; a mask pattern that is formed on the main surface of the semiconductor substrate and includes a plurality of opening portions provided immediately above the plurality of concave portions; a plurality of fine columnar crystals that is made of a group-III nitride semiconductor grown from the plurality of concave portions to the upper side of the mask pattern through the plurality of opening portions; an active layer that is grown on each of the plurality of fine columnar crystals; and a semiconductor layer covering each of the active layers. | 07-14-2011 |
Patent application number | Description | Published |
20100157131 | ORGANIC LIGHT-EMITTING DEVICE - An organic light-emitting device includes a first electrode, a second electrode, and a light-emitting layer disposed between the first and second electrodes. The light-emitting layer contains an organic compound emitting photoluminescent light with a peak wavelength of 430 to 480 nm. The organic compound has a profile factor of 0.02 or less at a wave number of 1,300 to 1,680 cm | 06-24-2010 |
20110062425 | ORGANIC EL ELEMENT - An organic EL element includes an anode and a cathode, and an organic compound layer between the anode and the cathode, the organic compound layer including a light-emitting sublayer, wherein the light-emitting sublayer contains a host, a metal complex acting as a first dopant, and a metal complex acting as a second dopant, the metal complex acting as the first dopant includes an unconjugated ligand and a conjugated ligand, and the first dopant has the lowest excited triplet level originating from the lowest excited triplet level of a unconjugated ligand. | 03-17-2011 |
20110108810 | ORGANIC ELECTROLUMINESCENCE DEVICE - Provided is an organic electroluminescence device having high efficiency and a long lifetime. The organic electroluminescence device includes an anode; a cathode; and an organic compound layer interposed between the anode and the cathode, and including an emission layer formed of a first emission layer provided on an anode side and a second emission layer provided on a cathode side, in which the first emission layer contains a first host and a first dopant, the second emission layer contains a second host and a second dopant, the following relationship (a) is established between the first host and the first dopant, the following relationship (b) is established between the second host and the second dopant, and the following relationship (c) is established between the first host and the second host: | 05-12-2011 |
20110175072 | ORGANIC LIGHT-EMITTING DEVICE - Provided is an organic light-emitting device that shows high luminous efficiency even when driven at a high luminance. More specifically, provided is an organic light-emitting device, including: an anode (transparent electrode layer) and a cathode (metal electrode layer); and an organic compound layer being interposed between the anode and the cathode, and including an emission layer, in which: the emission layer has a host, a first dopant, and a second dopant; the host includes an aromatic hydrocarbon compound; the first dopant includes a phosphorescent iridium complex; and the second dopant includes a compound having two triarylamine structures. | 07-21-2011 |
20110240974 | NOVEL BENZO[b]CHRYSENE COMPOUND AND ORGANIC LIGHT-EMITTING ELEMENT INCLUDING THE SAME - The present invention provides a benzo[b]chrysene compound represented by general formula [1] below and an organic light-emitting element including the compound. | 10-06-2011 |
20110260151 | NOVEL FUSED POLYCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING ELEMENT - A fused polycyclic compound is represented by general formula [1]: | 10-27-2011 |
20110272683 | NOVEL BICHRYSENE COMPOUND AND ORGANIC LIGHT EMITTING DEVICE HAVING THE COMPOUND - Provided are a novel bichrysene compound and an organic light emitting device having high light emitting efficiency and excellent driving durability. The organic light emitting device includes an anode, a cathode, and a layer formed of an organic compound interposed between the anode and the cathode. The layer formed of an organic compound has a bichrysene compound represented by the following general formula (1). | 11-10-2011 |
20110279025 | NOVEL CHRYSENE COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE HAVING THE COMPOUND - To provide a novel chrysene compound and an organic light-emitting device having high emission efficiency and excellent driving durability, provided is a novel triaryl-substituted chrysene compound represented by the general formula [1]: | 11-17-2011 |
20120012827 | ORGANIC LIGHT-EMITTING DEVICE - Provided is an organic light-emitting device that can be driven at low voltage, that produces a light output with high efficiency and high luminance, and that can emit light with high color purity. An organic light-emitting device includes an anode, a cathode, a light-emitting layer disposed between the anode and the cathode, and an organic layer disposed between the anode and the light-emitting layer. The organic layer has a fused polycyclic compound represented by general formula (1): | 01-19-2012 |
20120075273 | INDOLO[3,2,1-JK]CARBAZOLE COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE CONTAINING THE SAME - There is provided an indolo[3,2,1-jk]carbazole compound having an excellent membrane property, a high T1 energy, and a deep HOMO level. There is also provided an organic light-emitting device that contains the indolo[3,2,1-jk]carbazole compound. | 03-29-2012 |
20120085996 | ORGANIC LIGHT-EMITTING DEVICE - An organic light-emitting device includes a first electrode, a second electrode, and a light-emitting layer disposed between the first and second electrodes. The light-emitting layer contains an organic compound emitting photoluminescent light with a peak wavelength of 430 to 480 nm. The organic compound has a profile factor of 0.02 or less at a wave number of 1,300 to 1,680 cm | 04-12-2012 |
20120168737 | ORGANIC LIGHT-EMITTING DEVICE - An organic light-emitting device includes an anode, a cathode, and an organic compound layer including at least a light-emitting sublayer and being arranged between the anode and the cathode, the light-emitting sublayer containing a host serving as a main component, a first dopant, and a second dopant, in which for the host, the first dopant, and the second dopant, the following relationships (a) to (c) hold, whereby only the second dopant emits light:
| 07-05-2012 |
20120313085 | NOVEL ORGANIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE - A novel organic compound suitable for blue light emission and an organic light-emitting device containing the novel organic compound are provided. | 12-13-2012 |
20130001543 | NOVEL ORGANIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE HAVING THE SAME - Provided are a novel organic compound suitable for emitting green light and an organic light-emitting device including the compound. The organic compound is that shown in claim 1. The organic compound shown in claim 1 has substituents that are each independently selected from the group consisting of hydrogen atoms, halogen atoms, optionally substituted alkyl groups, optionally substituted alkoxy groups, substituted amino groups, optionally substituted aryl groups, and optionally substituted heterocyclic groups. | 01-03-2013 |
20130002526 | NOVEL ORGANIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE - A novel organic compound suitable for emitting green light and an organic light-emitting device including the organic compound are provided. The organic compound is represented by general formula (1). | 01-03-2013 |
20130011161 | ORGANIC LIGHT-EMITTING ELEMENT, LIGHT-EMITTING APPARATUS, IMAGE FORMING APPARATUS, DISPLAY APPARATUS, AND IMAGE PICKUP APPARATUS - An organic light-emitting element includes a first electrode, an organic compound layer, and a second electrode on a substrate and emits light from the second electrode side, wherein the second electrode includes a first layer and a second layer in contact with the first layer sequentially from the substrate side, the second layer is a layer comprising Ag, and the first layer is a layer comprising Ag and Cs. | 01-10-2013 |
20130037788 | NOVEL m-TERPHENYL COMPOUND AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME - An organic light emitting device which includes a m-terphenyl compound having a high T1 energy is provided. In addition, a novel m-terphenyl compound is provided. | 02-14-2013 |
20130037791 | ORGANIC LIGHT-EMITTING DEVICE - An organic light-emitting device that achieves highly efficient emission and low-voltage operation is provided. The organic light-emitting device contains a 9H-xanthen-9-one derivative. | 02-14-2013 |
20130076604 | NOVEL ORGANIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME - Provided are a novel organic compound appropriate for emission of green light and an organic light-emitting device including the organic compound. Provided is a substituted or unsubstituted indeno[1,2,3-cd]naphtho[2,3-k]fluoranthene appropriate for emission of green light. The substituents of the indeno[1,2,3-cd]naphtho[2,3-k]fluoranthene are each independently selected from a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted amino group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted heterocyclic group. | 03-28-2013 |
20130175519 | NEW CONDENSED POLYCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING ELEMENT USING THE SAME - The present invention provides a stable new condensed polycyclic compound which is not likely to form a molecular association. In addition, the present invention also provides an organic light-emitting element having a high light-emitting efficiency and a low drive voltage. In the condensed polycyclic compound in Claim | 07-11-2013 |
20130214268 | XANTHONE COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME - An organic light-emitting device that realizes high-emission efficiency and low-driving voltage is provided. The organic light-emitting device contains a xanthone compound represented by general formula [1]. | 08-22-2013 |
20130228768 | QUINOLINO[3,2,1-KL]PHENOXAZINE COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT USING THE SAME - Provided is an excellent organic light emitting element having high emission efficiency and a low drive voltage. The organic light emitting element includes an anode, a cathode, and an organic compound layer disposed between the anode and the cathode, in which the organic compound layer includes a quinolino[3,2,1-kl]phenoxazine compound represented by the following general formula [1]: | 09-05-2013 |
20130228770 | INDOLOPHENOXAZINE COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME - Provided is an organic light emitting device having high emission efficiency and excellent driving durability. The organic light emitting device includes an anode, a cathode, and an organic compound layer disposed between the anode and the cathode, in which the organic compound layer includes an indolophenoxazine compound represented by the following general formula [1]: | 09-05-2013 |
20130324771 | NOVEL BENZOPYRENE COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE HAVING THE SAME - The present invention provides a novel benzopyrene compound and also provides a organic light-emitting device. The present invention provides a benzopyrene represented by the formula [1] above. | 12-05-2013 |
20140027757 | NOVEL SPIRO COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE HAVING THE SAME - The present invention provides a novel stable organic compound and also provides an organic light-emitting device having a high luminous efficiency and a low driving voltage. The present invention relates to a spiro compound represented by the following Formula [1]: | 01-30-2014 |
20140103322 | DISPIRODIBENZONAPHTHACENE COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE HAVING THE SAME - The present invention provides a novel organic compound having high thermal stability and can form a stable amorphous thin-film and also provides an organic light-emitting device having a high luminous efficiency and a low driving voltage. | 04-17-2014 |
20140110687 | NOVEL CONDENSED POLYCYCLIC COMPOUND - Provided is a novel indenochrysene compound serving as a guest compound suitable for a guest material. In particular, the novel indenochrysene compound is represented by Formula (1), where R | 04-24-2014 |
20140320578 | NOVEL CONDENSED POLYCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT CONTAINING THE SAME - To provide a condensed polycyclic compound shown in the following General Formula [1], in which | 10-30-2014 |