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Masayuki Hata, Kadoma-Shi JP

Masayuki Hata, Kadoma-Shi JP

Patent application numberDescriptionPublished
20080219309METHOD OF FABRICATING SEMICONDUCTOR LASER DIODE APPARATUS AND SEMICONDUCTOR LASER DIODE APPARATUS - A semiconductor laser diode apparatus capable of suppressing difficulty in handling of the semiconductor laser diode also when the width of a semiconductor laser diode portion is small is obtained. This method of fabricating a semiconductor laser diode apparatus includes steps of forming a plurality of first semiconductor laser diode portions on a first substrate at a prescribed interval in a second direction intersecting with a first direction in which cavities extend, bonding one or some of the plurality of first semiconductor laser diode portions to a second substrate, separating the one or some of the plurality of first semiconductor laser diode portions bonded to the second substrate from the first substrate; and dividing the second substrate along the second direction.09-11-2008
20080225920SEMICONDUCTOR LASER DIODE APPARATUS AND METHOD OF FABRICATING THE SAME - A semiconductor laser diode apparatus capable of suppressing variation in an emission position and an emission direction of a laser beam emitted from a semiconductor laser diode element is obtained. This semiconductor laser diode apparatus includes a semiconductor laser diode element having warping along either a first direction in which a cavity extends or a second direction intersecting with the first direction and a base on which a convex side of the warping of the semiconductor laser diode element is fixed, wherein a distance between a first end of the semiconductor laser diode element in a direction of larger warping among the first and second directions and the base is smaller than a distance between a second end of the semiconductor laser diode element in the direction of the large warping among the first and second directions and the base.09-18-2008
20080240187SEMICONDUCTOR LASER DEVICE AND METHOD OF MANUFACTURING THE SAME - A semiconductor laser device capable of improving planarity of cleavage planes of an optical waveguide thereof is obtained. This semiconductor laser device includes a support substrate, a semiconductor laser element portion having a pair of cavity facets provided with ends of an optical waveguide extending in a first direction and a bonding layer bonding the support substrate and the semiconductor laser element portion to each other, while the bonding layer has void portions formed on regions close to at least the ends of the optical waveguide in the vicinity of the cavity facets.10-02-2008
20080258156Light-emitting diode apparatus - In a light-emitting diode apparatus, light emitted from a principal plane of an emission layer has a plurality of unequal luminous intensities depending on the in-plane azimuth angle of the principal plane of the emission layer, and at least one of a light-emitting diode chip and a package has a structure of reducing difference in the intensity of light emitted from the package according to variation in the in-plane azimuth angle of a chip-arrangement surface.10-23-2008
20080267238SEMICONDUCTOR LASER DIODE ELEMENT AND METHOD OF MANUFACTURING THE SAME - A semiconductor laser diode element includes a semiconductor laser diode portion including a ridge portion extending in a first direction in which a cavity extends, a groove formed along the ridge portion and a support portion formed along the groove on a side farther from the ridge portion and holding the groove between the support portion and the ridge portion and a support substrate bonded to the semiconductor laser diode portion through a fusion layer, wherein the fusion layer is formed so as to be embedded in the groove, a space from the ridge portion to the support substrate and a space from the support portion to the support substrate.10-30-2008
20080291958SEMICONDUCTOR LASER DEVICE - In a semiconductor laser device, a semiconductor laser element is so fixed to a base that a distance between a convex side of a warp of the semiconductor laser element and the base varies with the warp of the semiconductor laser element along a first direction corresponding to an extensional direction of a cavity while a wire bonding portion is provided around a portion of an electrode layer corresponding to the vicinity of a region where the distance is the largest.11-27-2008
20080298411NITRIDE-BASED SEMICONDUCTOR LASER DEVICE AND METHOD OF MANUFACTURING THE SAME - A nitride-based semiconductor laser device includes an optical waveguide extending substantially parallel to a [0001] direction of a nitride-based semiconductor layer, a forward end face located on a forward end of the optical waveguide and formed by a substantially (0001) plane of the nitride-based semiconductor layer and a rear end face located on a rear end of the optical waveguide and formed by a substantially (000-1) plane of the nitride-based semiconductor layer, wherein an intensity of a laser beam emitted from the forward end face is rendered larger than an intensity of a laser beam emitted from the rear end face.12-04-2008
20080315221NITRIDE-BASED SEMICONDUCTOR DEVICE AND METHOD OF FABRICATING THE SAME - A method of fabricating a nitride-based semiconductor device capable of reducing contact resistance between a nitrogen face of a nitride-based semiconductor substrate or the like and an electrode is provided. This method of fabricating a nitride-based semiconductor device comprises steps of etching the back surface of a first semiconductor layer consisting of either an n-type nitride-based semiconductor layer or a nitride-based semiconductor substrate having a wurtzite structure and thereafter forming an n-side electrode on the etched back surface of the first semiconductor layer.12-25-2008
20080317080SEMICONDUCTOR LASER DEVICE - In this semiconductor laser device, a semiconductor laser element is so fixed to a base that a distance between a convex side of a warp thereof and the base varies with the warp of the semiconductor laser element at least along a first direction corresponding to an extensional direction of a cavity or a second direction, while a wire bonding portion is provided around a portion of an electrode layer corresponding to the vicinity of a region where the distance between the convex side of the warp of the semiconductor laser element in at least either the first direction or the second direction of the semiconductor laser element and the base is substantially the smallest.12-25-2008
20090028204SEMICONDUCTOR LASER DEVICE - A semiconductor laser device includes a substrate made of a nitride-based semiconductor and a waveguide formed on a principal surface of the substrate, wherein the substrate includes a dislocation concentrated region arranged so as to obliquely extend with respect to the principal surface of the substrate, and the waveguide is so formed as to be located above the dislocation concentrated region and also located on a region except a portion where the dislocation concentrated region is present in the principal surface of the substrate.01-29-2009
20090039473METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE - A method of manufacturing a semiconductor device includes steps of forming a semiconductor device layer on an upper surface of a substrate including the upper surface, a lower surface and a dislocation concentrated region arranged so as to part a first side closer to the upper surface and a second side closer to the lower surface, exposing a portion where the dislocation concentrated region does not exist above on the lower surface by removing the substrate on the second side along with at least a part of the dislocation concentrated region, and forming an electrode on the portion.02-12-2009
20090245310NITRIDE-BASED SEMICONDUCTOR LASER DEVICE AND METHOD OF MANUFACTURING THE SAME - A nitride-based semiconductor laser device includes a nitride-based semiconductor layer formed on a main surface of a substrate and having an emission layer, wherein the nitride-based semiconductor layer includes a first side surface formed by a (000-1) plane and a second side surface inclined with respect to the first side surface, and a ridge having an optical waveguide extending perpendicular to a [0001] direction in an in-plane direction of the main surface of the substrate is formed by a region held between the first side surface and the second side surface.10-01-2009
20090267100NITRIDE-BASED SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME - A nitride-based semiconductor device includes a substrate, a first step portion formed on a main surface side of a first side end surface of the substrate, a second step portion formed on the main surface side of a second side end surface substantially parallel to the first side end surface on an opposite side of the first side end surface and a nitride-based semiconductor layer whose first side surface is a (000-1) plane starting from a first side wall of the first step portion and a second side surface starting from a second side wall of the second step portion on the main surface.10-29-2009
20100067559LASER DIODE DEVICE, OPTICAL APPARATUS AND DISPLAY APPARATUS - A laser diode device includes a first laser diode element, a second laser diode element and a third laser diode element having a longer lasing wavelength than the first and second 6 laser diode elements. The first, second and third laser diode elements are arranged in a package, and the third laser diode element is not electrically connected to the first and second laser diode elements.03-18-2010
20100080000LASER DIODE DEVICE AND DISPLAY APPARATUS - A laser diode device includes a red laser diode element, a green laser diode element and a blue laser diode element. The red, green and blue laser diode elements are arranged in a single package in a state of being connected to wires for supplying power independently. Additionally, the blue laser diode element is arranged between the red laser diode element and the green laser diode element as viewed from a laser beam-emitting direction.04-01-2010
20110104839SEMICONDUCTOR LASER DEVICE AND METHOD OF MANUFACTURING THE SAME - A semiconductor laser device includes a substrate and a semiconductor layer formed on a surface of the substrate and having a waveguide extending in a first direction parallel to the surface, wherein the waveguide is formed on a region approaching a first side from a center of the semiconductor laser device in a second direction parallel to the surface and intersecting with the first direction, a first region separated from the waveguide on a side opposite to the first side of the waveguide and extending parallel to the first direction and a first recess portion separated from the waveguide on an extension of a facet of the waveguide, intersecting with the first region and extending in the second direction are formed on an upper surface of the semiconductor laser device, and a thickness of the semiconductor layer on the first region is smaller than a thickness of the semiconductor layer on a region other than the first region.05-05-2011

Patent applications by Masayuki Hata, Kadoma-Shi JP