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Hidenori Kamei

Hidenori Kamei, Fukuoka JP

Patent application numberDescriptionPublished
20090101936SEMICONDUCTOR LIGHT EMITTING ELEMENT AND WAFER - There are provided a semiconductor light emitting element which allows an improvement in light extraction efficiency without increasing the number of fabrication steps, and a wafer. In a semiconductor light emitting element 04-23-2009
20090127568SEMICONDUCTOR LIGHT EMITTING ELEMENT AND METHOD FOR FABRICATING THE SAME - A semiconductor light emitting element includes a substrate 05-21-2009
20090267091SEMICONDUCTOR LIGHT EMITTING DEVICE - A semiconductor light emitting device includes a substrate 10-29-2009
20090321745SEMICONDUCTOR LIGHT-EMITTING DEVICE - A semiconductor light-emitting device includes: a substrate; a first conductivity type layer formed on the substrate and including a plurality of group III-V nitride semiconductor layers of a first conductivity type; an active layer formed on the first conductivity type layer; and a second conductivity type layer formed on the active layer and including a group III-V nitride semiconductor layer of a second conductivity type. The first conductivity type layer includes an intermediate layer made of Al12-31-2009
20100187565SEMICONDUCTOR LIGHT EMITTING ELEMENT AND WAFER - There are provided a semiconductor light emitting element which allows an improvement in light extraction efficiency without increasing the number of fabrication steps, and a wafer. In a semiconductor light emitting element 07-29-2010
20110089466SEMICONDUCTOR LIGHT EMITTING DEVICE - A semiconductor light emitting device includes a substrate 04-21-2011

Patent applications by Hidenori Kamei, Fukuoka JP

Hidenori Kamei, Kagoshima JP

Patent application numberDescriptionPublished
20100047939SEMICONDUCTOR LIGHT EMITTING ELEMENT AND METHOD FOR MANUFACTURING SEMICONDUCTOR LIGHT EMITTING DEVICE - In a semiconductor light emitting device, light is lost from a side surface of a substrate; therefore, if a substrate side surface occupies a large area, it decreases light extraction efficiency. The area of the substrate side surface may be reduced by reducing a thickness of the substrate. However, a thin substrate has low mechanical strength and is cracked by a stress during work process, and that decreases the yield.02-25-2010
20100237382SEMICONDUCTOR LIGHT EMITTING ELEMENT, SEMICONDUCTOR LIGHT EMITTING DEVICE USING THE ELEMENT, AND METHOD FOR MANUFACTURING THE DEVICE - The present invention provides a semiconductor light emitting element capable of improving light extraction efficiency and a semiconductor light emitting device using the semiconductor light emitting element without adding any manufacturing step09-23-2010
20100252855SEMICONDUCTOR LIGHT-EMITTING DEVICE - In semiconductor light-emitting devices in which a light-emitting layer is formed on one surface of a substrate, and an n-side electrode and a p-side electrode are formed over the same surface of the substrate as the light-emitting layer, heat generated by a semiconductor light-emitting element needs to be dissipated to a submount. However, it is extremely complicated to fabricate connection members serving also as heat dissipating members and to control fabrication of the connection members, according to semiconductor light-emitting elements having electrodes of various sizes and shapes. By increasing the density of p-side bumps near the n-side electrode, the heat transfer area from the semiconductor light-emitting element to the submount is increased near the n-side electrode, whereby the heat dissipation effect is enhanced.10-07-2010
20100258830SEMICONDUCTOR LIGHT-EMITTING DEVICE AND MANUFACTURING METHOD OF THE SAME - Light from a semiconductor light-emitting element travels in all directions. Thus, light that travels in the directions other than a lighting direction cannot be used effectively. Means for forming a semiconductor light-emitting element having tilted side surfaces, and forming a reflective layer on the tilted side surfaces has been proposed. However, since the tilted surfaces are formed by an etching method or the like, it takes a long time to form the tilted surfaces, and it is difficult to control the tilted surfaces. As a solution to these problems, semiconductor light-emitting elements are placed on a submount substrate and sealed with a sealant, and then a groove is formed in a portion between adjoining ones of the semiconductor light-emitting elements. The grooves formed are filled with a reflective material, and a light-emitting surface is polished. Then, the submount substrate is divided into individual semiconductor light-emitting devices. Thus, a semiconductor light-emitting device having a reflective layer on its side surfaces can be obtained.10-14-2010
20100258837SEMICONDUCTOR LIGHT EMITTING ELEMENT AND SEMICONDUCTOR LIGHT EMITTING DEVICE USING THE SAME - In a semiconductor light emitting device, in which a light emitting layer is formed on one surface of a conductive substrate, and an n-type electrode and a p-type electrode are formed on the same side as the light emitting layer, there has been the problem that, if larger electric power is applied, heat is generated near the n-side electrode to reduce luminous efficiency.10-14-2010
20110037092LIGHT-EMITTING ELEMENT - A light-emitting device includes an n-type semiconductor layer 02-17-2011