Patent application number | Description | Published |
20080303042 | Method for manufacturing substrate for semiconductor light emitting element and semiconductor light emitting element using the same - A light emitting element having a recess-protrusion structure on a substrate is provided. A semiconductor light emitting element | 12-11-2008 |
20110316041 | SAPPHIRE SUBSTRATE AND METHOD FOR MANUFACTURING THE SAME AND NITRIDE SEMICONDUCTOR LIGHT EMITTING DEVICE - A sapphire substrate having one principal surface on which a nitride semiconductor is grown, said one principal surface having a plurality of projections. Each of the projections has a generally pyramidal shape with a not truncated, more sharpened tip and with an inclined surface composed of a crystal growth-suppression surface that lessens or suppresses the growth of the nitride semiconductor and also which has an inclination change line at which an inclination angle discontinuously varies. | 12-29-2011 |
20120074431 | SAPPHIRE SUBSTRATE AND SEMICONDUCTOR - The sapphire substrate has a principal surface for growing a nitride semiconductor to form a nitride semiconductor light emitting device and comprising a plurality of projections of the principal surface, wherein an outer periphery of a bottom surface of each of the projections has at least one depression. This depression is in the horizontal direction. The plurality of projections are arranged so that a straight line passes through the inside of at least any one of projections when the straight line is drawn at any position in any direction in a plane including the bottom surfaces of the plurality of projections. | 03-29-2012 |
20130146892 | METHOD FOR MANUFACTURING SUBSTRATE FOR SEMICONDUCTOR LIGHT EMITTING ELEMENT AND SEMICONDUCTOR LIGHT EMITTING ELEMENT USING THE SAME - A light emitting element having a recess-protrusion structure on a substrate is provided. A semiconductor light emitting element | 06-13-2013 |
20130270593 | SAPPHIRE SUBSTRATE AND SEMICONDUCTOR LIGHT EMITTING DEVICE - A sapphire substrate having a principal surface for growing a nitride semiconductor to form a nitride semiconductor light emitting device comprises a plurality of projections on the principal surface. Each of the projections has a bottom that has a substantially polygonal shape. Each side of the bottom of the projections has a depression in its center. Vertexes of the bottoms of the respective projections extend in a direction that is within a range of ±10 degrees of a direction that is rotated clockwise by 30 degrees from a crystal axis “a” of the sapphire substrate. | 10-17-2013 |
20130285109 | SAPPHIRE SUBSTRATE AND SEMICONDUCTOR - A sapphire substrate having a principal surface for growing a nitride semiconductor to form a nitride semiconductor light emitting device comprises a plurality of projections on the principal surface. Each of the projections has a bottom that has a substantially polygonal shape. Each side of the bottom of the projections has a depression in its center. Vertexes of the bottoms of the respective projections extend in a direction that is within a range of ±10 degrees of a direction that is rotated counter-clockwise by 30 degrees from a crystal axis “a” of the sapphire substrate. | 10-31-2013 |
20140124805 | METHOD FOR MANUFACTURING SUBSTRATE FOR SEMICONDUCTOR LIGHT EMITTING ELEMENT AND SEMICONDUCTOR LIGHT EMITTING ELEMENT USING THE SAME - A light emitting element having a recess-protrusion structure on a substrate is provided. A semiconductor light emitting element | 05-08-2014 |
20140306265 | SAPPHIRE SUBSTRATE AND SEMICONDUCTOR LIGHT EMITTING DEVICE - The sapphire substrate has a principal surface for growing a nitride semiconductor to form a nitride semiconductor light emitting device and comprising a plurality of projections of the principal surface, wherein an outer periphery of a bottom surface of each of the projections has at least one depression. This depression is in the horizontal direction. The plurality of projections are arranged so that a straight line passes through the inside of at least any one of projections when the straight line is drawn at any position in any direction in a plane including the bottom surfaces of the plurality of projections. | 10-16-2014 |