Abstract:
There is provided a method of forming a nitride semiconductor layer, including the steps of firstly providing a substrate on which a patterned epitaxy layer with a pier structure is formed. A protective layer is then formed on the patterned epitaxy layer, exposing a top surface of the pier structure. Next, a nitride semiconductor layer is formed over the patterned epitaxy layer connected to the nitride semiconductor layer through the pier structure, wherein the nitride semiconductor layer, the pier structure, and the patterned epitaxy layer together form a space exposing a bottom surface of the nitride semiconductor layer. Thereafter, a weakening process is performed to remove a portion of the bottom surface of the nitride semiconductor layer and to weaken a connection point between the top surface of the pier structure and the nitride semiconductor layer. Finally, the substrate is separated from the nitride semiconductor layer through the connection point.
Abstract:
A nitride semiconductor substrate and a method for manufacturing the same are provided. The nitride semiconductor substrate includes a base material, a patterned nitride semiconductor, a protection layer, and a nitride semiconductor layer. The patterned nitride semiconductor layer is located on the base material and includes a plurality of nanorod structures and a plurality of block patterns, and an upper surface of the nanorod structures is substantially coplanar with an upper surface of the block patterns. The protection layer covers a side wall of the nanorod structure sand a side wall of the block patterns. The nitride semiconductor layer is located on the patterned nitride semiconductor layer, and a plurality of nanopores are located between the nitride semiconductor layer and the patterned nitride semiconductor layer.
Abstract:
A substrate structure is described, including a starting substrate, crystal piers on the starting substrate, and a mask layer. The mask layer covers an upper portion of the sidewall of each crystal pier, is connected between the crystal piers at its bottom, and is separated from the starting substrate by an empty space between the crystal piers. An epitaxial substrate structure is also described, which can be formed by growing an epitaxial layer over the above substrate structure form the crystal piers. The crystal piers may be broken after the epitaxial layer is grown.
Abstract:
A method of manufacturing a light emitting diode element is provided. A first patterned semi-conductor layer, a patterned light emitting layer, and a second patterned semi-conductor layer are sequentially formed on an epitaxy substrate so as to form a plurality of epitaxy structures, wherein the first patterned semi-conductor layer has a thinner portion in a non-epitaxy area outside the epitaxy structures. A passivation layer covering the epitaxy structures and the thinner portion is formed. The passivation layer covering on the thinner portion is partially removed to form a patterned passivation layer. A patterned reflector is formed directly on each of the epitaxy structures. The epitaxy structures are bonded to a carrier substrate. A lift-off process is performed to separate the epitaxy structures from the epitaxy substrate. An electrode is formed on each of the epitaxy structures far from the patterned reflector.
Abstract:
A nitride semiconductor substrate and a method for manufacturing the same are provided. The nitride semiconductor substrate includes an epitaxy substrate, a nitride pillar layer, a nitride semiconductor layer, and a mask layer. The nitride pillar layer includes a plurality of first patterned arranged pillars and a plurality of second patterned arranged pillars. The nitride pillar layer is formed on the epitaxy substrate. A width of a cross-section of each of the second patterned arranged pillars is smaller than a width of a cross-section of each of the first patterned arranged pillars, and a distance among each of the second patterned arranged pillars is longer than a distance among each of the first patterned arranged pillars. Surfaces of the epitaxy substrate, the first patterned arranged pillars, and the second patterned arranged pillars are covered by the mask layer. The nitride semiconductor layer is formed on the nitride pillar layer.
Abstract:
A composite material substrate having patterned structure includes a substrate, a first dielectric layer, a second dielectric layer, and a nitride semiconductor material. Herein, the first dielectric layer is stacked on the substrate, the second dielectric layer is stacked on the first dielectric layer, and the nitride semiconductor material is stacked on the second dielectric layer and is characterized by a plurality of patterns thereon.
Abstract:
An island submount used for carrying at least one light-emitting element having at least one electrical contact. The island submount includes a substrate, at least one island structure having a top surface and an inclined surface, and a conductive layer. The island structure is located on the substrate and corresponds to the electrical contact. The conductive layer is formed on the surface of the island structure and at least covers the top surface, so as to be electrically connected with the electrical contact. The island submount is capable of enhancing the light extraction efficiency of the light-emitting element, and avoids the energy loss due to re-absorption when the light emerging from below the light-emitting element is reflected back to the light-emitting element.
Abstract:
The present invention relates to a method of forming a nitride semiconductor substrate. This method includes steps of providing a substrate and then forming an epitaxy layer on the substrate. A patterned mask layer is formed on the epitaxy layer, wherein the patterned mask layer exposes a portion of the epitaxy layer. Next, an oxidation process is performed to oxidize the exposed epitaxy layer so as to form a plurality of dislocation blocking structures. The patterned mask layer is then removed. Further, a nitride semiconductor layer is formed on the epitaxy layer having the dislocation blocking structures.
Abstract:
A nitride semiconductor substrate and a method for manufacturing the same are provided. The nitride semiconductor substrate includes an epitaxy substrate, a nitride pillar layer, a nitride semiconductor layer, and a mask layer. The nitride pillar layer includes a plurality of first patterned arranged pillars and a plurality of second patterned arranged pillars. The nitride pillar layer is formed on the epitaxy substrate. A width of a cross-section of each of the second patterned arranged pillars is smaller than a width of a cross-section of each of the first patterned arranged pillars, and a distance among each of the second patterned arranged pillars is longer than a distance among each of the first patterned arranged pillars. Surfaces of the epitaxy substrate, the first patterned arranged pillars, and the second patterned arranged pillars are covered by the mask layer. The nitride semiconductor layer is formed on the nitride pillar layer.
Abstract:
A nitride semiconductor substrate includes an epitaxy substrate, a patterned nitride semiconductor pillar layer, a nitride semiconductor layer, and a mask layer is provided. The nitride semiconductor pillar layer includes a plurality of first patterned arranged hollow structures and a plurality of second patterned arranged hollow structures formed among the first patterned arranged hollow structures. The second patterned arranged hollow structures have nano dimensions. The nitride semiconductor pillar layer is formed on the epitaxy substrate, and the nitride semiconductor layer is formed on the nitride semiconductor pillar layer. The mask layer covers surfaces of the nitride semiconductor pillar layer and the epitaxy substrate.