摘要:
A light-emitting diode device is provided with the following manufacturing method: forming an n-GaN layer on a substrate; growing an SiO2 layer on the n-GaN surface, and using the photo-lithography process to expose the n-GaN within the mesa area; using MOCVD to grow an LED structure in the epitaxy within the mesa area, the formed structure being a p-n coplanar structure due to the selective area characteristic; and finally, forming the electrodes on the structure to complete an LED device. The device can be manufactured without the etching process to form the p-n coplanar structure. In comparison to other conventional manufacturing methods, the method simplifies the manufacturing process, and avoids many problems associated with etching, including non-uniform etching, overly rough surface, etching damages, and current leakage. Furthermore, SiO2 is used as a scattering layer to prevent emitted light from internally reflected, and therefore, improves the external quantum efficiency.
摘要:
A light emitting semiconductor bonding structure includes a structure formed by bonding a substrate onto a light emitting semiconductor. The substrate is a structure containing electric circuits. The ohmic contact N electrode layer and P electrode layer are formed on the N-type contact layer and the P-type contact layer of the light emitting semiconductor respectively. A first metallic layer and a second metallic layer are formed on the surface of the substrate by means of immersion plating or deposition. The metallic layers are connected electrically to the corresponding electric signal input/output nodes of the electric circuit of the substrate. The first metallic layer and the second metallic layer are bonded onto the N electrode layer and the P electrode layer respectively through supersonic welding, and as such the light emitting semiconductor is bonded onto the substrate, and thus realizing the electric connection in-between.
摘要:
A multidirectional light scattering LED and a manufacturing method thereof are disclosed. A metal oxide is irregular disposed over a second semiconductor layer and then is removed by etching. Part of the second semiconductor layer, part of a light-emitting layer or part of the first semiconductor layer is also removed so as to form a scattering layer. A transparent conductive layer is arranged over the second semiconductor layer while further a second electrode is disposed over the transparent conductive layer. A first electrode is installed on the scattering layer. Thus light output from the LED is scattered in multi-directions.
摘要:
A structure for integrating LED circuit onto a heat-dissipation substrate is disclosed. At least an electronic component and a LED chip are integrated on a heat-dissipation substrate. The electronic component can be a passive component, a drive chip, an electrostatic discharge protection device, or a sensing component. Therefore, both wire-bonding area of the LED chip and the series resistance of wires are reduced while the heat dissipation efficiency is enhanced.
摘要:
An epitaxial structure for semiconducting photo detectors is provided. The epitaxial structure contains a substrate having a built-in electric circuit, a first and second metallic layers on top of said substrate electrically connected to the corresponding electrical input and output points of the substrate's electric circuit, and a semiconducting photo detecting element as the topmost part for receiving incident lights.
摘要:
A multidirectional light scattering LED and a manufacturing method thereof are disclosed. A metal oxide is irregular disposed over a second semiconductor layer and then is removed by etching. Part of the second semiconductor layer, part of a light-emitting layer or part of the first semiconductor layer is also removed so as to form a scattering layer. A transparent conductive layer is arranged over the second semiconductor layer while further a second electrode is disposed over the transparent conductive layer. A first electrode is installed on the scattering layer. Thus light output from the LED is scattered in multi-directions.
摘要:
An LED includes a substrate, a first type doping semiconductor layer, a first electrode, a light emitting layer, a second type doping semiconductor layer, a second electrode, a first dielectric layer and a first conductive plug. The first type doping semiconductor layer is formed on the substrate, and the light emitting layer, the second type doping semiconductor layer and the second electrode are formed on a portion of the first type doping semiconductor layer in sequence. The first dielectric layer is formed on another portion of the first type doping semiconductor layer where is not covered by the light emitting layer. The first electrode formed on the first dielectric layer is electrically connected with the first type doping semiconductor layer through the first conductive plug formed in the first dielectric layer. Furthermore, the second electrode is electrically connected with the second type doping semiconductor layer.
摘要:
A light-emitting gallium nitride-based III-V group compound semiconductor device and a manufacturing method thereof are disclosed. The light emitting device includes a substrate, a n-type semiconductor layer over the substrate, an active layer over the n-type semiconductor layer, a p-type semiconductor layer over the active layer, a conductive layer over the p-type semiconductor layer, a first electrode disposed on the conductive layer and a second electrode arranged on exposed part of the n-type semiconductor layer. A resistant reflective layer or a contact window is disposed on the p-type semiconductor layer, corresponding to the first electrode so that current passes beside the resistant reflective layer or by the contact window to the active layer for generating light. When the light is transmitted to the conductive layer for being emitted, it is not absorbed or shielded by the first electrode. Thus the current is distributed efficiently over the conductive layer. Therefore, both LED brightness and efficiency are improved. Moreover, adhesion between the conductive layer and the p-type semiconductor layer is improved so that metal peel-off problem during manufacturing processes can be improved.
摘要:
A light-emitting gallium nitride-based III-V group compound semiconductor device and a manufacturing method thereof are disclosed. The light emitting device includes a substrate, a n-type semiconductor layer over the substrate, an active layer over the n-type semiconductor layer, a p-type semiconductor layer over the active layer, a conductive layer over the p-type semiconductor layer, a first electrode disposed on the conductive layer and a second electrode arranged on exposed part of the n-type semiconductor layer. A resistant reflective layer or a contact window is disposed on the p-type semiconductor layer, corresponding to the first electrode so that current passes beside the resistant reflective layer or by the contact window to the active layer for generating light. When the light is transmitted to the conductive layer for being emitted, it is not absorbed or shielded by the first electrode. Thus the current is distributed efficiently over the conductive layer. Therefore, both LED brightness and efficiency are improved. Moreover, adhesion between the conductive layer and the p-type semiconductor layer is improved so that metal peel-off problem during manufacturing processes can be improved.
摘要:
A multidirectional light scattering LED and a manufacturing method thereof are disclosed. A metal oxide is irregular disposed over a second semiconductor layer and then is removed by etching. Part of the second semiconductor layer, part of a light-emitting layer or part of the first semiconductor layer is also removed so as to form a scattering layer. A transparent conductive layer is arranged over the second semiconductor layer while further a second electrode is disposed over the transparent conductive layer. A first electrode is installed on the scattering layer. Thus light output from the LED is scattered in multi-directions.