Patent application number | Description | Published |
20120061680 | GALLIUM NITRIDE BASED SEMICONDUCTOR DEVICES AND METHODS OF MANUFACTURING THE SAME - Gallium nitride (GaN) based semiconductor devices and methods of manufacturing the same. The GaN-based semiconductor device may include a heat dissipation substrate (that is, a thermal conductive substrate); a GaN-based multi-layer arranged on the heat dissipation substrate and having N-face polarity; and a heterostructure field effect transistor (HFET) or a Schottky electrode arranged on the GaN-based multi-layer. The HFET device may include a gate having a double recess structure. While such a GaN-based semiconductor device is being manufactured, a wafer bonding process and a laser lift-off process may be used. | 03-15-2012 |
20120061727 | GALLIUM NITRIDE BASED SEMICONDUCTOR DEVICES AND METHODS OF MANUFACTURING THE SAME - Gallium nitride (GaN) based semiconductor devices and methods of manufacturing the same. The GaN-based semiconductor device may include a heterostructure field effect transistor (HFET) or a Schottky diode, arranged on a heat dissipation substrate. The HFET device may include a GaN-based multi-layer having a recess region; a gate arranged in the recess region; and a source and a drain that are arranged on portions of the GaN-based multi-layer at two opposite sides of the gate (or the recess region). The gate, the source, and the drain may be attached to the heat dissipation substrate. The recess region may have a double recess structure. While such a GaN-based semiconductor device is being manufactured, a wafer bonding process and a laser lift-off process may be used. | 03-15-2012 |
20120280233 | NITRIDE-BASED HETEROSTRUCTURE FIELD EFFECT TRANSISTOR HAVING HIGH EFFICIENCY - A high efficiency heterostructure field effect transistor (HFET) capable of suppressing a leakage current and enhancing a current density by lowering a barrier between an electrode and a semiconductor layer is provided. The high efficiency HFET may include a substrate, a semi-insulating gallium nitride (GaN) layer formed on the substrate, an aluminum gallium nitride (AlGaN) layer formed on the GaN layer, and a silicon carbide (Si | 11-08-2012 |
20130015464 | POWER SEMICONDUCTOR DEVICEAANM HUR; Seung BaeAACI Suwon-siAACO KRAAGP HUR; Seung Bae Suwon-si KRAANM Kim; Ki SeAACI Suwon-siAACO KRAAGP Kim; Ki Se Suwon-si KR - A power semiconductor device and a manufacturing method thereof are provided. The power semiconductor device includes an anode electrode including an anode electrode pad, electrode bus lines connected to a first side and a second side on the anode electrode pad, the electrode bus lines each having a decreasing width in a direction away from the anode electrode pad, and pluralities of first anode electrode fingers and second anode electrode fingers connected with a third side and a fourth side on the anode electrode pad and with both sides of the electrode bus line, a cathode electrode including a first cathode electrode pad and a second cathode electrode pad, a plurality of cathode electrode fingers connected with the first cathode electrode pad, and a plurality of second cathode electrode fingers connected with the second cathode electrode pad, and an insulation layer disposed at an external portion of the anode. | 01-17-2013 |
20130026485 | POWER SEMICONDUCTOR DEVICE - A power semiconductor device is provided. The power semiconductor device includes a source electrode disposed on a device activation region and widened in a direction toward a first side, a drain electrode arranged alternately with the source electrode on the device activation region and widened in a direction toward a second side facing the first side, an insulating layer disposed on the source electrode and the drain electrode and configured to include a plurality of via contacts contacting the source electrode and the drain electrode, a source electrode pad disposed in a first region on the insulating layer to be brought into contact with the source electrode, and a drain electrode pad disposed in a second region separated from the first region on the insulating layer and brought into contact with the plurality of via contacts contacting the drain electrode. | 01-31-2013 |
20130034939 | METHOD OF MANUFACTURING POWER DEVICE - A method of manufacturing a power device includes forming a first drift region on a substrate. A trench is formed by patterning the first drift region. A second drift region is formed by growing n-gallium nitride (GaN) in the trench, and alternately disposing the first drift region and the second drift region. A source electrode contact layer is formed on the second drift region. A source electrode and a gate electrode are formed on the source electrode contact layer. A drain electrode is formed on one side of the substrate which is an opposite side of the first drift region. | 02-07-2013 |
20130168688 | NITRIDE BASED SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF - A nitride based semiconductor device includes a first metallic junction layer, a Schottky junction layer on the first metallic junction layer, a first group III nitride semiconductor layer on the Schottky junction layer, a first insulating pattern layer on the first group III nitride semiconductor layer, the first insulating layer pattern including curved protrusions, a second group III nitride semiconductor layer laterally grown on the first group III nitride semiconductor layer, a first type group III nitride semiconductor layer on the second group III nitride semiconductor layer, the first type group III nitride semiconductor layer being simultaneously doped with aluminum (Al) and silicon (Si), an ohmic junction layer formed on the first type group III nitride semiconductor layer, a second metallic junction layer on the ohmic junction layer, and a metallic supporting substrate on the second metallic junction layer. | 07-04-2013 |
20130168698 | POWER DEVICES AND METHOD FOR MANUFACTURING THE SAME - A power device includes a substrate, a silicon carbide (Si | 07-04-2013 |
20130168873 | POWER SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF - A power semiconductor device and a manufacturing method thereof, the power semiconductor device including a plurality of first electrodes and a plurality of second electrodes, a plurality of first via electrodes on a first insulating layer and contacting the plurality of first electrodes, a plurality of second via electrodes on the first insulating layer and contacting the plurality of second electrodes, a first electrode pad contacting the plurality of first via electrodes, a second electrode pad contacting the plurality of second via electrodes, a plurality of third via electrodes on a second insulating layer and contacting the first electrode pad, a plurality of fourth via electrodes on the second insulating layer and contacting the second electrode pad, a third electrode pad contacting the plurality of third via electrodes, and a fourth electrode pad contacting the plurality of fourth via electrodes. | 07-04-2013 |
20140021512 | METHODS OF MANUFACTURING THE GALLIUM NITRIDE BASED SEMICONDUCTOR DEVICES - Gallium nitride (GaN) based semiconductor devices and methods of manufacturing the same. The GaN-based semiconductor device may include a heterostructure field effect transistor (HFET) or a Schottky diode, arranged on a heat dissipation substrate. The HFET device may include a GaN-based multi-layer having a recess region; a gate arranged in the recess region; and a source and a drain that are arranged on portions of the GaN-based multi-layer at two opposite sides of the gate (or the recess region). The gate, the source, and the drain may be attached to the heat dissipation substrate. The recess region may have a double recess structure. While such a GaN-based semiconductor device is being manufactured, a wafer bonding process and a laser lift-off process may be used. | 01-23-2014 |
20140167113 | GALLIUM NITRIDE BASED SEMICONDUCTOR DEVICES AND METHODS OF MANUFACTURING THE SAME - Gallium nitride (GaN) based semiconductor devices and methods of manufacturing the same. The GaN-based semiconductor device may include a heat dissipation substrate (that is, a thermal conductive substrate); a GaN-based multi-layer arranged on the heat dissipation substrate and having N-face polarity; and a heterostructure field effect transistor (HFET) or a Schottky electrode arranged on the GaN-based multi-layer. The HFET device may include a gate having a double recess structure. While such a GaN-based semiconductor device is being manufactured, a wafer bonding process and a laser lift-off process may be used. | 06-19-2014 |
20140327049 | METHODS OF MANUFACTURING THE GALLIUM NITRIDE BASED SEMICONDUCTOR DEVICES - Gallium nitride (GaN) based semiconductor devices and methods of manufacturing the same. The GaN-based semiconductor device may include a heterostructure field effect transistor (HFET) or a Schottky diode, arranged on a heat dissipation substrate. The HFET device may include a GaN-based multi-layer having a recess region; a gate arranged in the recess region; and a source and a drain that are arranged on portions of the GaN-based multi-layer at two opposite sides of the gate (or the recess region). The gate, the source, and the drain may be attached to the heat dissipation substrate. The recess region may have a double recess structure. While such a GaN-based semiconductor device is being manufactured, a wafer bonding process and a laser lift-off process may be used. | 11-06-2014 |