Patent application number | Description | Published |
20120020085 | Light-Emitting Device and Lighting Device - It is an object to improve light extraction efficiency in a light-emitting device and a lighting device. A light-emitting device includes a plurality of light-emitting portions, and a plurality of hemispherical components provided so as to overlap with the plurality of light-emitting portions. The plurality of hemispherical components are provided so as not to form a space therebetween in a region where the plurality of hemispherical components are adjacent to each other. When a refractive index of the hemispherical component is n and a radius of a bottom surface of the hemispherical component is b, the light-emitting portion is provided inside a circle whose radius r from a center of the bottom surface of the hemispherical component is b/n. | 01-26-2012 |
20120061707 | Solid-State Light-Emitting Element, Light-Emitting Device, and Lighting Device - A solid-state light-emitting element includes a structure body having a property of transmitting visible light and an uneven structure on each of the top side and the bottom side thereof; a high refractive index material layer provided on one surface of the structure body; and a light-emitting body with a refractive index of greater than or equal to 1.6 provided over the high refractive index material layer. One surface of the high refractive index material layer is flatter than the other surface thereof which is in contact with the structure body. The refractive index of the high refractive index material layer is greater than or equal to 1.6. The refractive index of the structure body is greater than 1.0 and less than that of the high refractive index material layer. | 03-15-2012 |
20120087134 | LIGHTING DEVICE - One object is to reduce the weight of a lighting device including an electroluminescent material. An object is to achieve high reliability of a lighting device including an electroluminescent material. In a lighting device including a light-emitting element having an electroluminescence (EL) layer, a housing formed using an organic resin whose refractive index is greater than or equal to that of the EL layer is provided to cover a light emission surface and a top surface of the light-emitting element. In addition, an inorganic insulating film covering an inner wall of the housing provided with the light-emitting element and the top surface of the light-emitting element is preferably provided. | 04-12-2012 |
20120099331 | LIGHTING DEVICE - To improve reliability of a lighting device using an electroluminescent material. In a lighting device which includes a light-emitting element containing an electroluminescence (EL) layer, a first housing is provided on a light emission surface of the light-emitting element, a metal plate and a second housing covering the metal plate are provided over a top surface of the light-emitting element, and the first housing is connected to both the metal plate and the second housing, whereby the light-emitting element is doubly sealed. Further, a depressed portion is provided for the first housing in a region in contact with the metal plate or a region in contact with the second housing through an adhesive layer; thus, adhesion between the housings is improved. | 04-26-2012 |
20130082247 | Light-Emitting Device - To provide a light-emitting device which can emit bright light without increasing the projected area of a light-emitting element and be manufactured with high yield. A light-emitting device of one embodiment of the present invention includes a plurality of projections; a first electrode formed along the plurality of projections; a layer containing a light-emitting organic compound formed along the plurality of projections and over the first electrode; and a second electrode formed along the plurality of projections and over the layer containing a light-emitting organic compound. Further, the plurality of projections each have a bottom surface having a side in contact with a bottom surface of an adjacent projection; a plurality of side surfaces each having a certain angle greater than 0° and less than or equal to 80° with respect to the bottom surface; and a vertex having a first continuously curved surface. | 04-04-2013 |
20130265762 | Light-Emitting Device and Lighting Device - It is an object to improve light extraction efficiency in a light-emitting device and a lighting device. A light-emitting device includes a plurality of light-emitting portions, and a plurality of hemispherical components provided so as to overlap with the plurality of light-emitting portions. The plurality of hemispherical components are provided so as not to form a space therebetween in a region where the plurality of hemispherical components are adjacent to each other. When a refractive index of the hemispherical component is n and a radius of a bottom surface of the hemispherical component is b, the light-emitting portion is provided inside a circle whose radius r from a center of the bottom surface of the hemispherical component is b/n. | 10-10-2013 |
20140307314 | DISPLAY DEVICE - A display device which can display a two-dimensional image that gives a viewer a strong sense of depth or three dimensions is provided. A display device includes a light-transmitting layer with a viewing surface and a convex surface facing each other, and a display region in which a plurality of display elements for displaying an image toward the viewing surface are provided along the convex surface. In the display device, the refractive index of the light-transmitting layer is higher than the refractive index of the atmosphere, and the viewing surface is a surface intersecting the convex surface at three points, or a distance between a foot N of a perpendicular line drawn from a point M on the convex surface to the surface and an intersection P of the perpendicular line with the viewing surface is largest when the point M is at an outermost point. | 10-16-2014 |
20150048349 | DISPLAY DEVICE - A display device, an electronic device, or a lighting device that is unlikely to be broken is provided. A flexible first substrate and a flexible second substrate overlap with each other with a display element provided therebetween. A flexible third substrate is bonded on the outer surface of the first substrate, and a flexible fourth substrate is bonded on the outer surface of the second substrate. The third substrate is formed using a material softer than the first substrate, and the fourth substrate is formed using a material softer than the second substrate. | 02-19-2015 |
20150054014 | Solid-State Light-Emitting Element, Light-Emitting Device, and Lighting Device - A solid-state light-emitting element includes a structure body having a property of transmitting visible light and an uneven structure on each of the top side and the bottom side thereof; a high refractive index material layer provided on one surface of the structure body; and a light-emitting body with a refractive index of greater than or equal to 1.6 provided over the high refractive index material layer. One surface of the high refractive index material layer is flatter than the other surface thereof which is in contact with the structure body. The refractive index of the high refractive index material layer is greater than or equal to 1.6. The refractive index of the structure body is greater than 1.0 and less than that of the high refractive index material layer. | 02-26-2015 |
20150076472 | LIGHT-EMITTING DEVICE, LIGHTING DEVICE, AND DISPLAY DEVICE - A light-emitting device, a lighting device, a display device, or the like in which the state of a back surface side can be observed when light is not emitted is provided. The light-emitting device includes a plurality of light-emitting portions and a region transmitting visible light in a region other than the light-emitting portions. Alternatively, the light-emitting device includes a plurality of light-transmitting portions transmitting visible light and a light-emitting portion that can emit light in a region other than the light-transmitting portions. When light is not emitted, the state of a back surface side of the light-emitting device is visible through the region transmitting visible light. When light is emitted, the state of the back surface side of the light-emitting device can be made less visible by diffusion of light emitted from the light-emitting portion. | 03-19-2015 |