Patent application number | Description | Published |
20140239337 | SUBSTRATE FOR LIGHT-EMITTING DEVICE AND LIGHT-EMITTING DEVICE THEREOF - This invention discloses a substrate for a light-emitting device and light-emitting device using the same, and the substrate comprises a sapphire substrate. The sapphire substrate comprises a surface having a plurality of cones, heights of the cones are ranged from 1.4-1.9 μm, diameters of the cones are ranged from 2.4-2.9 μm, base angles between the bottom of each of the cones and the level surface of the sapphire substrate are ranged from 40°-80°, the plurality of cones are uniformly distributed over the sapphire substrate and do not contact each other, a distance between the apexes of each two neighboring cones is ranged from 2.5-3.5 μm, a distance between the bottoms of each two neighboring cones is ranged from 0.1-0.6 μm. Further, the substrate of the light-emitting device further comprises an interlayer covering the sapphire substrate to increase the epitaxy speed and enhance the throughput subsequently. | 08-28-2014 |
20140239338 | SUBSTRATE FOR LIGHT-EMITTING DEVICE AND LIGHT-EMITTING DEVICE THEREOF - This invention discloses a substrate for a light-emitting device and light-emitting device using the same, and the substrate comprises a sapphire substrate. The sapphire substrate comprises a surface having a plurality of cones, heights of the cones are ranged from 1.6-2.1 μm, diameters of the cones are ranged from 3.4-3.9 μm, base angles between the bottom of each of the cones and the level surface of the sapphire substrate are ranged from 40°-80°, the plurality of cones are uniformly distributed over the sapphire substrate and do not contact each other, a distance between apexes of each two neighboring cones is ranged from 3.5-4.5 μm, a distance between the bottoms of each two neighboring cones is ranged from 0.1-0.6 μm. Further, the substrate of the light-emitting device further comprises an interlayer covering the sapphire substrate to increase the epitaxy speed and enhance the throughput subsequently. | 08-28-2014 |
20140239339 | A LIGHT EMITTING DEVICE COMPRISES A SAPPHIRE SUBSTRATE HAVING A PLURALITY OF OPTIMIZED CONES ON ITS SURFACE - This invention discloses a substrate for a light-emitting device and light-emitting device using the same, and the substrate comprises a sapphire substrate. The sapphire substrate comprises a surface having a plurality of cones, heights of the cones are ranged from 0.6-1.6 μm, diameters of the cones are ranged from 0.6-1.6 μm, base angles between the bottom of each of the cones and the level surface of the sapphire substrate are ranged from 40°-80°, the plurality of cones are uniformly distributed over the sapphire substrate and do not contact each other, a distance between the apexes of each two neighboring cones is ranged from 1.7-2.3 μm, a distance between the bottoms of each two neighboring cones is ranged from 0.4-1.4 μm. Further, the substrate of the light-emitting device further comprises an interlayer covering the sapphire substrate to increase the epitaxy speed and enhance the throughput subsequently. | 08-28-2014 |