| Patent application number | Description | Published |
|---|
| 20120235126 | Light-Emitting Device and Manufacturing Method Thereof - To provide a method for manufacturing light-emitting devices with different emission colors using EL layers formed using the same apparatus and condition, and a light-emitting device with high added value. A substrate in which a transparent conductive layer is formed in advance on a surface over which an EL layer is to be formed and another substrate in which a transparent conductive layer with a thickness different from that of the transparent conductive layer are prepared, and EL layers are formed over the substrates using the same apparatus and condition. Thus, even when the EL layers are formed using the same apparatus and condition, optical path lengths of the substrates can be different. | 09-20-2012 |
| 20120243219 | Light-Emitting Panel, Light-Emitting Device, and Method for Manufacturing the Light-Emitting Panel - A light-emitting panel can be manufactured in which a first light-emitting element emits light having high brightness and a pale color and causing less eyestrain even in the case of long time, a second light-emitting element emits light of a bright red color, a third light-emitting element emits green light, and a fourth light-emitting element emits blue light. Further, a layer transmitting light of a specific color (e.g., a color filter) is not provided in all the light-emitting elements except the second light-emitting element; thus, light emitted from the layer containing a light-emitting organic compound can be efficiently used. As a result, a light-emitting panel which is capable of bright, full-color light emission and whose power consumption is reduced can be provided. | 09-27-2012 |
| 20120248421 | LIGHT-EMITTING ELEMENT - A light-emitting element having extremely high efficiency of approximately 25% is provided. The light-emitting element includes a light-emitting layer which contains a phosphorescent guest, an n-type host, and a p-type host, where the light-emitting layer is interposed between an n-type layer including the n-type host and a p-type layer including the p-type host, and where the n-type host and the p-type host are able to form an exciplex in the light-emitting layer. The light-emitting element exhibits an extremely high emission efficiency (power efficiency of 74.3 lm/W, external quantum efficiency of 24.5%, energy efficiency of 19.3%) at a low driving voltage (2.6 V) at which luminance of 1200 cd/m | 10-04-2012 |
| 20120248969 | Organometallic Complex, Light-Emitting Element, Display Device, Electronic Device, and Lighting Device - An organometallic complex which can emit phosphorescence is provided. The organometallic complex, which is a novel substance, is represented by General Formula (G1) or General Formula (G2). In General Formula (G1), R | 10-04-2012 |
| 20120256535 | LIGHT-EMITTING ELEMENT - To provide a light-emitting element with high emission efficiency or long lifetime, in which the use amount of a phosphorescent compound is small. To provide a light-emitting element including a light-emitting layer between a pair of electrodes, wherein the light-emitting layer includes a phosphorescent compound, a first organic compound, and a second organic compound, and the combination of the first organic compound and the second organic compound forms an exciplex. The light-emitting element transfers energy by utilizing the overlap between the emission spectrum of the exciplex and the absorption spectrum of the phosphorescent compound and thus has high energy transfer efficiency, even when the concentration of the phosphorescent compound is low. | 10-11-2012 |
| 20120273822 | Light-Emitting Element, Light-Emitting Device, and Lighting Device - Disclosed is a light-emitting element with a microcavity structure which is capable of amplifying a plurality of wavelengths to give emission of a desired color. The light-emitting element includes a pair of electrodes and an EL layer having a light-emitting substance interposed between the pair of electrodes. One of the pair of electrodes gives a reflective surface and the other electrode gives a semi-reflective surface. The light-emitting element is arranged so that the emission of the light-emitting substance covers at least two wavelengths λ and an optical path length L between the reflective surface and the semi-reflective surface satisfies an equation L=nλ/2 where n is an integer greater than or equal to 2. | 11-01-2012 |
| 20120289708 | Carbazole Compound, Light-Emitting Element Material, and Organic Semiconductor Material - A novel carbazole compound that can be used for a transport layer, a host material, or a light-emitting material in a light-emitting element. In the carbazole compound, two carbazole skeletons each include carbazole, the 3-position of which is bonded to the 4-position of a dibenzofuran skeleton or a dibenzothiophene skeleton and these two carbazole skeletons are linked via benzene or biphenyl. The carbazole compound has an excellent carrier-transport property and a wide energy gap and can be suitably used for a material in a light-emitting element or for an organic semiconductor material. | 11-15-2012 |
| 20120302762 | Carbazole Compound, Light-Emitting Element, Light-Emitting Device, Electronic Device, and Lighting Device - A carbazole compound represented by General Formula (G1) is provided. | 11-29-2012 |
