摘要:
A method for fabricating an LED chip is provided. Firstly, a SiO2 pattern layer is formed on a top surface of a substrate. Then, lighting structures are grown on a portion of the top surface of substrate without the SiO2 pattern layer thereon. Thereafter, the SiO2 pattern layer is removed by wet etching to form spaces between bottoms of the lighting structures and substrate. An etching solution is used to permeate into the spaces and etch the lighting structures from the bottoms thereof, whereby the lighting structures each with a trapezoid shape is formed. Sidewalls of each of the lighting structures are inclined inwardly along a top-to-bottom direction.
摘要:
A method for manufacturing a light emitting diode chip, comprising steps: providing a substrate with a first patterned blocking layer formed thereon; growing a first n-type semiconductor layer on the substrate between the constituting parts of first patterned blocking layer, and stopping the growth of the first n-type semiconductor layer before the first n-type semiconductor layer completely covers the first patterned blocking layer; removing the first patterned blocking layer, whereby a plurality of first holes are formed at position where the first patterned blocking layer is originally existed; continuing the growth of the first n-type semiconductor layer until the first holes are completely covered by the first n-type semiconductor layer; and forming an active layer and a p-type current blocking layer on the first n-type semiconductor layer successively.
摘要:
A semiconductor light-emitting structure includes a silicon substrate, a distributed Bragg reflector, a semiconductor structures layer and an epitaxy connecting layer. The silicon substrate has a top surface. The distributed Bragg reflector is formed on the top surface of the silicon substrate. The semiconductor structures layer is configured for emitting light. The epitaxy connecting layer is placed between the distributed Bragg reflector and the semiconductor structures layer. Grooves extend from the semiconductor structures layer through the epitaxy connecting layer and the distributed Bragg reflector to reach the semiconductor structures layer.
摘要:
A photoelectric device having Group III nitride semiconductor includes a conductive layer, a metallic mirror layer located on the conductive layer, and a Group III nitride semiconductor layer located on the metallic mirror layer. The Group III nitride semiconductor layer defines a number of microstructures thereon. Each microstructure includes at least one angled face, and the angled face of each microstructure is a crystal face of the Group III nitride semiconductor layer.
摘要:
An LED module includes a base, a circuit layer formed on the base and multiple LEDs each having an LED die connecting to the circuit layer. The circuit layer includes multiple connecting sections. Each connecting section includes a first connecting part and a second connecting part electrically insulating and spaced from each other. Each LED includes an electrode layer having a first section and a second section electrically insulated from the first section and respectively electrically connecting the first and second connecting parts of a corresponding connecting section. The LED die is electrically connected to the second section. A transparent electrically conductive layer is formed on the LED die and electrically connects the LED die to the first section of the electrode layer. An electrically insulating layer is located between the LED die and surrounding the LED die except where the transparent electrically conductive layer connects.
摘要:
A method for manufacturing light emitting chips includes steps of: providing a substrate having a plurality of separate epitaxy islands thereon, wherein the epitaxy islands are spaced from each other by channels; filling the channels with an insulation material; sequentially forming a reflective layer, a transition layer and a base on the insulation material and the epitaxy islands; removing the substrate and the insulation material to expose the channels; and cutting the reflective layer, the transition layer and the base to form a plurality of individual chips along the channels.
摘要:
A light emitting diode chip includes an electrically conductive substrate, a reflecting layer disposed on the substrate, a semiconductor structure formed on the reflecting layer, an electrode disposed on the semiconductor structure, and a plurality of slots extending through the semiconductor structure. The semiconductor structure includes a P-type semiconductor layer formed on the reflecting layer, a light-emitting layer formed on the P-type semiconductor layer, and an N-type semiconductor layer formed on the light-emitting layer. A current diffusing region is defined in the semiconductor structure and around the electrode. The slots are located outside the current diffusing region.
摘要:
A gallium nitride-based semiconductor device includes a composite substrate and a gallium nitride layer. The composite substrate includes a silicon substrate and a filler. The silicon substrate includes a first surface and a second surface opposite to the first surface, and the first surface defines a number of grooves therein. The filler is filled into the number of grooves on the first surface of the silicon substrate. A thermal expansion coefficient of the filler is bigger than that of the silicon substrate. The gallium nitride layer is formed on the second surface of the silicon substrate.
摘要:
A light emitting device (LED) epitaxial structure includes a substrate, a nitride semiconductor layer, a patterned oxide total-reflective layer, a first-type semiconductor layer, an active layer and a second-type semiconductor layer. The nitride semiconductor layer is formed on the substrate. The patterned oxide total-reflective layer is formed on the nitride semiconductor layer. An upper surface of the nitride semiconductor layer is partially exposed out from the oxide total-reflective layer. The first-type semiconductor layer is arranged on the exposed upper surface of the nitride semiconductor layer and covers the oxide total-reflective layer. The active layer is arranged on the first-type semiconductor layer. The second-type semiconductor layer is arranged on the active layer.
摘要:
A method for fabricating an LED chip includes: providing a sapphire substrate with a SiO2 pattern layer formed on the substrate; forming a lighting structure on the sapphire substrate with the SiO2 pattern layer; forming grooves in the lighting structure to divide the lighting structure into a number of light emitting regions, the grooves extending to the sapphire substrate and revealing the SiO2 pattern layer; removing the SiO2 pattern layer and forming spaces between the lighting structure and the substrate; etching part of the light emitting regions, and then forming electrodes on the light emitting regions; and cutting the sapphire substrate along the grooves to obtain a plurality of LED chips.