Abstract: A light emitting diode package structure including a base, a light emitting diode and an encapsulant is provided. The light emitting diode is disposed on a surface of the base and is adapted to generate and emit a light. The encapsulant is disposed on the base and encapsulates the light emitting diode. The encapsulant has a surface parallel to the surface of the base and a plurality of surfaces perpendicular to the surface of the base. The light, after passing through the surface of the encapsulant parallel to the surface of the base, has a first light intensity. The light, after passing through the surfaces of the encapsulant perpendicular to the surface of the base, has a second light intensity. The first light intensity is greater than the second light intensity. In addition, a manufacturing method of a light emitting diode package structure is also provided.

Abstract: A semiconductor device has an active layer, a first semiconductor layer of first conductive type, an overflow prevention layer disposed between the active layer and the first semiconductor layer, which is doped with impurities of first conductive type and which prevents overflow of electrons or holes, a second semiconductor layer of first conductive type disposed at least one of between the active layer and the overflow prevention layer and between the overflow prevention layer and the first semiconductor layer, and an impurity diffusion prevention layer disposed between the first semiconductor layer and the active layer, which has a band gap smaller than those of the overflow prevention layer, the first semiconductor layer and the second semiconductor layer and which prevents diffusion of impurities of first conductive type.

Abstract: The present invention discloses a light device and a fabrication method thereof. An object of the present invention is to provide the light device and the fabrication method thereof an electric/thermal/structural stability is obtained, and a P-type electrode and an N-type electrode can be simultaneously formed. In order to achieve the above object, the inventive light device includes: a GaN-based layer; a high concentration GaN-based layer formed on the GaN-based layer; a first metal-Ga compound layer formed on the high concentration GaN-based layer; a first metal layer formed on the first metal-Ga compound layer; a third metal-Al compound layer formed on the first metal layer; and a conductive oxidation preventive layer formed on the third metal-Al compound layer.

Abstract: Provided are a light-emitting element and a method of fabricating the same. The light-emitting element includes: a first pattern including conductive regions and non-conductive regions. The non-conductive regions are defined by the conductive regions. The light-emitting element also include an insulating pattern including insulating regions and non-insulating regions which correspond respectively to the conductive regions and non-conductive regions. The non-insulating regions are defined by the insulating regions. The light-emitting element further includes a light-emitting structure interposed between the first pattern and the insulating pattern. The light-emitting structure includes a first semiconductor pattern of a first conductivity type, a light-emitting pattern, and a second semiconductor pattern of a second conductivity type which are stacked sequentially. The light-emitting element also includes a second pattern formed in the non-insulating regions.

Abstract: The present invention discloses a light emitting package, including: a base; a light emitting device on the base; an electrical circuit layer electrically connected to the light emitting device; a screen member having an opening and disposed on the base adjacent to the light emitting device; and a lens covering the light emitting device, wherein a width of a cross-sectional shape of the screen member is larger than a height of the cross sectional shape of the screen member, wherein the lens is disposed on the screen member, and wherein the lens is connected to an uppermost surface of the screen member.

Abstract: A semiconductor device has an active layer, a first semiconductor layer of first conductive type, an overflow prevention layer disposed between the active layer and the first semiconductor layer, which is doped with impurities of first conductive type and which prevents overflow of electrons or holes, a second semiconductor layer of first conductive type disposed at least one of between the active layer and the overflow prevention layer and between the overflow prevention layer and the first semiconductor layer, and an impurity diffusion prevention layer disposed between the first semiconductor layer and the active layer, which has a band gap smaller than those of the overflow prevention layer, the first semiconductor layer and the second semiconductor layer and which prevents diffusion of impurities of first conductive type.

Abstract: A method for forming a pixel of an LED light source is provided. The method includes: forming a first layer on a first substrate; forming a second layer and a first light-emitting active layer on the first layer; forming a first intermediate layer on the second layer; forming a third layer on a second substrate; forming a fourth layer and a second light-emitting active layer on the third layer; placing the third layer, the fourth layer, and the second light-emitting active layer on the first intermediate layer, wherein the first light-emitting active layer and the second light-emitting active layer emit different colors of light. A method for forming a plurality of light-emitting diode pixels arranged in a two-dimensional array is also provided.

Abstract: The present invention discloses a light emitting package, including: a base; a light emitting device on the base; an electrical circuit layer electrically connected to the light emitting device; a screen member having an opening and disposed on the base adjacent to the light emitting device; and a lens covering the light emitting device, wherein a width of a cross-sectional shape of the screen member is larger than a height of the cross sectional shape of the screen member, wherein the lens is disposed on the screen member, and wherein the lens is connected to an uppermost surface of the screen member.

Abstract: Provided are a light-emitting element and a method of fabricating the same. The light-emitting element includes: a first pattern including conductive regions and non-conductive regions. The non-conductive regions are defined by the conductive regions. The light-emitting element also include an insulating pattern including insulating regions and non-insulating regions which correspond respectively to the conductive regions and non-conductive regions. The non-insulating regions are defined by the insulating regions. The light-emitting element further includes a light-emitting structure interposed between the first pattern and the insulating pattern. The light-emitting structure includes a first semiconductor pattern of a first conductivity type, a light-emitting pattern, and a second semiconductor pattern of a second conductivity type which are stacked sequentially. The light-emitting element also includes a second pattern formed in the non-insulating regions.

Abstract: An illuminator includes a substrate, a structured conductive layer applied to one surface of the substrate, and at least one light source connected to the structured conductive layer. The illuminator further includes an unstructured reflective layer applied on top of the structured conductive layer. The unstructured reflective layer has an essentially continuous extension at least in a surrounding of the at least one light source.

Abstract: A semiconductor device has an active layer, a first semiconductor layer of first conductive type, an overflow prevention layer disposed between the active layer and the first semiconductor layer, which is doped with impurities of first conductive type and which prevents overflow of electrons or holes, a second semiconductor layer of first conductive type disposed at least one of between the active layer and the overflow prevention layer and between the overflow prevention layer and the first semiconductor layer, and an impurity diffusion prevention layer disposed between the first semiconductor layer and the active layer, which has a band gap smaller than those of the overflow prevention layer, the first semiconductor layer and the second semiconductor layer and which prevents diffusion of impurities of first conductive type.

Abstract: The present invention discloses a light emitting package, comprising: a base; a light emitting device on the base; an electrical circuit layer electrically connected to the light emitting device; a gold layer on the electrical circuit layer; a wire electrically connected between the light emitting device and the gold layer; a screen member having an opening and disposed on the base adjacent to the light emitting device; and a lens covering the light emitting device, wherein a cross-sectional shape of the screen member is substantially rectangular, and a width of the cross-sectional shape of the screen member being larger than a height of the cross sectional shape of the screen member, wherein a bottom surface of the screen member is positioned higher than the light emitting device, and wherein an entire uppermost surface of the screen member is in contact with the lens.

Abstract: One embodiment of a micro-electronic device includes a substrate including micro-electronic components thereon, and a cover including a ring of sealing material secured to the substrate and a raised ring of material positioned opposite the cover from the ring of sealing material.

Abstract: The present invention discloses a light emitting package, comprising: a base; a light emitting device on the base; an electrical circuit layer electrically connected to the light emitting device; a gold layer on the electrical circuit layer; a wire electrically connected between the light emitting device and the gold layer; a screen member having an opening and disposed on the base adjacent to the light emitting device; and a lens covering the light emitting device, wherein a bottom surface of the screen member is positioned higher than the light emitting device, and wherein an entire uppermost surface of the screen member is in contact with the lens.

Abstract: Disclosed is a light emitting device including a substrate, a light emitting structure arranged on the substrate, the light emitting structure including a first semiconductor layer, a second semiconductor layer and an active layer arranged between the first semiconductor layer and the second semiconductor layer, a first electrode electrically connected to the first semiconductor layer, and a second electrode electrically connected to the second semiconductor layer, wherein the light emitting structure has a top surface including a first side and a second side which face each other, and a third side and a fourth side which face each other.

Abstract: A light-emitting diode including: a structure in a semiconductor material of first conductivity type, wherein the structure has a first face of which a first region is in contact with a pad of semiconductor material having a second conductivity type opposite the first conductivity type, and the diode further includes a first electric contact on the pad, a second electric contact-on the first face or on a second face of the structure, and a gate in electrically conductive material arranged on a second region of the first face and separated from the first face by an electrically insulating layer.

Abstract: The semiconductor device includes: a base; a first mount placed on the bottom of the base; a second mount placed on the top of the base; a first light-emitting element placed on the bottom of the first mount; and a second light-emitting element placed on the top of the second mount for emitting light. The first light-emitting element and the second light-emitting element are placed so that the emission direction of light from the second light-emitting element is at an angle of depression with respect to the emission direction of light from the first light-emitting element and that the emission direction of light from the first light-emitting element and the emission direction of light from the second light-emitting element substantially coincide with each other as viewed from above the base.

Abstract: A surface emitting laser includes a lower multilayer mirror, an active layer, and an upper multilayer mirror stacked onto a substrate. A first current confinement layer having a first electrically conductive region and a first insulating region is formed above or below the active layer using a first trench structure. A second current confinement layer having a second electrically conductive region and a second insulating region is formed above or below the first current confinement layer using a second trench structure. The first and second trench structures extend from a top surface of the upper multilayer mirror towards the substrate such that the second trench structure surrounds the first trench structure. When the surface emitting laser is viewed in an in-plane direction of the substrate, a boundary between the first electrically conductive region and the first insulating region is disposed inside the second electrically conductive region.

Abstract: A light emitting element array including an active layer commonly used for light emitting element regions, carrier injection layers which are electrically isolated from each other and which are provided in the respective light emitting element regions, and a resistive layer which has a resistance higher than that of the carrier injection layers and which is provided between the active layer and the carrier injection layers.

Abstract: The present invention discloses a light device and a fabrication method thereof. An object of the present invention is to provide the light device and the fabrication method thereof an electric/thermal/structural stability is obtained, and a P-type electrode and an N-type electrode can be simultaneously formed. In order to achieve the above object, the inventive light device includes: a GaN-based layer; a high concentration GaN-based layer formed on the GaN-based layer; a first metal-Ga compound layer formed on the high concentration GaN-based layer; a first metal layer formed on the first metal-Ga compound layer; a third metal-Al compound layer formed on the first metal layer; and a conductive oxidation preventive layer formed on the third metal-Al compound layer.

Abstract: A semiconductor light emitting package is discussed, which includes a base having a top surface with a flat portion; a semiconductor light emitting device on the base; an electrical circuit layer electrically connected to the semiconductor light emitting device; a screen member having an opening and disposed on the base around the semiconductor light emitting device, the screen member shaped into a substantially circle; and an optical member formed of a light transmissive material such that light emitted from the semiconductor light emitting device passes therethrough, wherein a bottom surface of the screen member is positioned higher than the semiconductor light emitting device, an edge portion of the optical member is in contact with the screen member, a top surface of the optical member is substantially parallel to the flat portion of the base.

Abstract: To prevent a point defect and a line defect in forming a light-emitting device, thereby improving the yield. A light-emitting element and a driver circuit of the light-emitting element, which are provided over different substrates, are electrically connected. That is, a light-emitting element and a driver circuit of the light-emitting element are formed over different substrates first, and then electrically connected. By providing a light-emitting element and a driver circuit of the light-emitting element over different substrates, the step of forming the light-emitting element and the step of forming the driver circuit of the light-emitting element can be performed separately. Therefore, degrees of freedom of each step can be increased, and the process can be flexibly changed. Further, steps (irregularities) on the surface for forming the light-emitting element can be reduced than in the conventional technique.

Abstract: A light emitting diode is provided, comprising: a substrate; a metal wiring layer disposed on the substrate; alight emitting element provided on the metal wiring layer; wherein the light emitting element comprises: a semiconductor light emitting layer having a first semiconductor layer, an active layer, and a second semiconductor layer formed from the substrate side sequentially; a transparent insulating layer provided on the substrate side of the semiconductor light emitting layer; a first electrode part and a second electrode part provided on the substrate side of the transparent insulating layer in such a manner as being separated from each other, and joined to the metal wiring layer; a first contact part provided so as to pass through the transparent insulating layer and electrically connecting the first electrode part and the first semiconductor layer; and a second contact part provided so as to pass through the transparent insulating layer, the first semiconductor layer, and the active layer, and electr

Abstract: A semiconductor light emitting package includes a base having a top surface with a flat portion, the base shaped into a substantially circle; a plurality of semiconductor light emitting devices on the base; an electrical circuit layer electrically connected to the plurality of semiconductor light emitting device; a plurality of screen members on the base; and a plurality of optical members formed of a light transmissive material such that light emitted from at least one of the semiconductor light emitting devices passes therethrough, wherein each of the screen members has an opening surrounding at least one of the semiconductor light emitting device, each opening of the screen members is shaped into a substantially circle, a diameter of the base is larger than a diameter of the opening of the screen members, and an edge portion of the optical members is in contact with one of the screen members.

Abstract: A light-emitting element array with the improvement of the light-emitting efficiency and the improvement of the uneven amount of light is provided. A light-emitting element array comprises a light-emitting portion array consisting of a plurality of light-emitting portions linearly arranged in a main scanning direction, and a micro-lens formed on each of the light-emitting portions, wherein the micro-lens has a shape of the length of a sub-scanning direction different from the length of the main scanning direction, and the length of the sub-scanning direction is longer than the length of the main scanning direction, and is 3.5 times or less of the length of the main scanning direction.

Abstract: A method for forming a pixel of an LED light source is provided. The method includes following steps: forming a first layer on a substrate; forming a second layer and a first light-emitting active layer on the first layer; exposing a portion of an upper surface of the first layer; forming a third layer on the substrate; forming a fourth layer and a second light-emitting active layer on the third layer; exposing a portion of an upper surface of the third layer; and forming a first electrode on the exposed upper surface of the first layer, a second electrode on a portion of an upper surface of the second layer, a third electrode on the exposed upper surface of the third layer, and a fourth electrode a portion of an upper surface of the fourth layer. The first light-emitting active layer and the second light-emitting active layer emit different colors of light.

Abstract: A light-emitting diode chip package body with an excellent heat dissipation performance and a low manufacturing cost, and a packaging method of the same are disclosed. A LED chip package body is provided, the LED chip package body comprising: a LED chip having an electrode-side surface and at least two electrodes mounted on said electrode-side surface; an electrode-side insulating layer formed on said electrode-side surface of said LED chip and formed with a plurality of through-holes registered with corresponding said electrodes; a highly heat-dissipating layer formed in each of said through-holes of said insulating layer on said electrode-side surface; and a highly heat-conducting metal layer formed on said highly heat-dissipating layer in each of said through-holes.

Abstract: The present invention discloses a light emitting device package, comprising: a metal base; an electrical circuit layer provided at an upper side of the metal base for providing a conductive path; a light emitting device mounted in a second region having a smaller thickness than a first region on the metal base; an insulating layer sandwiched between the meta base and the electrical circuit layer; an electrode layer provided at an upper side of the electrical circuit layer; and a wire for electrically connecting the electrode layer and the light emitting device. Further, there is provided a light emitting device package which is improved in light emission efficiency since the light emitting device is placed on a small thickness portion of the metal base.

Abstract: The present invention discloses a III-nitride compound semiconductor light emitting device having an n-type nitride compound semiconductor layer, an active layer grown on the n-type nitride compound semiconductor layer, for generating light by recombination of electron and hole, and a p-type nitride compound semiconductor layer grown on the active layer. The III-nitride compound semiconductor light emitting device includes a plurality of semiconductor layers including a nitride compound semiconductor layer with a pinhole structure grown on the p-type nitride compound semiconductor layer.

Abstract: The present invention discloses a light emitting device package, comprising: a metal base; an electrical circuit layer provided at an upper side of the metal base for providing a conductive path; a light emitting device mounted in a second region having a smaller thickness than a first region on the metal base; an insulating layer sandwiched between the meta base and the electrical circuit layer; an electrode layer provided at an upper side of the electrical circuit layer; and a wire for electrically connecting the electrode layer and the light emitting device. Further, there is provided a light emitting device package which is improved in light emission efficiency since the light emitting device is placed on a small thickness portion of the metal base.

Abstract: An alternating current (AC) light emitting device is revealed. The AC light emitting device includes a substrate and a plurality of light emitting units arranged on the substrate. The light emitting unit consists of a first semiconductor layer, a light emitting layer, a second semiconductor layer, at least one electrode and at least one second electrode respectively arranged on the first semiconductor layer and the second semiconductor layer from bottom to top. The plurality of light emitting units is coupled to at least one adjacent light emitting unit by a plurality of conductors. By the plurality of conductors that connect light emitting units with at least one adjacent light emitting unit, an open circuit will not occur in the AC light emitting device once one of the conductors is broken.

Abstract: A self-scanning light source head comprising: a substrate, surface emitting semiconductor lasers arranged in an array on the substrate, and at least one thyristor disposed on the substrate and serving as a switching element selectively turning ON and OFF light emission of the surface emitting semiconductor lasers, and an image forming apparatus using the same are provided.

Abstract: A lateral light-emitting diode backlight module includes a base, a circuit board, and at least a light emitting diode wherein the base having a heat conductor, the circuit board having a conductive pad formed on a surface thereof, and the circuit board disposed on the heat conductor and connected to the heat conductor. Each light emitting diode comprising a substrate, a heat sink fastened to the substrate and connected to the heat conductor, an LED chip disposed on the heat sink and emits light laterally, and a pin mounted on the substrate and extended to the conductive pad of the circuit board.

Abstract: A semiconductor light emitting apparatus can include a housing filled with a wavelength conversion material-containing resin material which seals a semiconductor light emitting device inside the recess of the housing. A transparent resin material can be charged on the wavelength conversion material-containing resin material, and can be configured to prevent the resin materials from being detached from each other or from other portions, such as a housing. Furthermore, such a semiconductor light emitting apparatus can emit light with less color unevenness. The housing can include a first recessed portion and a second recessed portion. The second recessed portion can have a larger diameter than the first recessed portion so as to form a stepped area at the boundary therebetween. The first recessed portion is filled with the wavelength conversion material-containing resin material as a first resin.

Abstract: A light emitting device includes a metal base, an electrical circuit layer provided at an upper side of the metal base for providing a conductive path, a light emitting device mounted in a second region having a smaller thickness than a first region on the metal base, an insulating layer sandwiched between the metal base and the electrical circuit layer, an electrode layer provided at an upper side of the electrical circuit layer, and a wire for electrically connecting the electrode layer and the light emitting device. The light emitting device package has improved light emission efficiency since the light emitting device is placed on a small thickness portion of the metal base.

Abstract: Provided are an apparatus and method for driving LEDs. The apparatus comprise a plurality of red, green, and blue light emitting diodes connected, respectively; switching units turned on or off by an inputted pulse to turn on or off the red, green and blue light emitting diodes, respectively; and a control unit outputting respective pulses to sequentially delay a turn-on or turn-off time between the switching units.

Abstract: A light emitting element array including an active layer commonly used for light emitting element regions, carrier injection layers which are electrically isolated from each other and which are provided in the respective light emitting element regions, and a resistive layer which has a resistance higher than that of the carrier injection layers and which is provided between the active layer and the carrier injection layers.

Abstract: Light-emitting devices, and related components, processes, systems and methods are disclosed.

Abstract: An optical light engine is fabricated by providing a thermally conductive base having one or more mounting pedestals for elevating one or more LED die above the base's surface. The LED die are mounted on the pedestals, electrically connected, and a mold having a molding surface for molding a dome centered around the LED die is disposed on the base over the pedestal-mounted LED die. The encapsulating material is then injected through an input port disposed in the base to mold the dome around the LED die. The encapsulant material is cured and the mold is removed. In an advantageous embodiment, the light engine comprises a ceramic-coated metal base made by the low temperature co-fired ceramic-on-metal process (LTCC-M).

Abstract: The present invention provides a light-emitting element having less increase in driving voltage with the accumulation of light-emission time, and provides a light-emitting element having less increase in resistance value with the increase in film thickness. A light-emitting element includes a first layer, a second layer and a third layer between a first electrode and a second electrode. The first layer is provided to be closer to the first electrode than the second layer, and the third layer is provided to be closer to the second electrode than the second layer. The first layer is a layer including an aromatic amine compound and a substance showing an electron accepting property to the aromatic amine compound. The second layer includes a substance of which an electron transporting property is stronger than a hole transporting property, and a substance showing an electron donating property to the aforementioned substance.

Abstract: A light emitting device has a cup portion with a bottom surface opening, and one electrode of a light emitting element is connected to the cup portion. The other electrode of the light emitting element is connected to a lead set up from an inner space to outside the cup portion using the opening of the cup portion. Each electrode and lead of the light emitting device can be electrically connected without bonding wires. This prevents shadows or light unevenness from reflecting the shape of the bonding wire, thereby enhancing light-emission efficiency. As an alternative to setting up the lead from inside to the outside of the cup portion, the lead existing outside the cup portion and the other electrode are electrically connected via the bonding wire through the cup portion's opening. Thus, light outputted outside of the light emitting device is not intercepted by the bonding wire.

Abstract: In a nitride semiconductor light emitting device having patterns formed on the upper and lower surfaces of a substrate from which light is emitted in a flip chip bonding structure, the patterns are capable of changing light inclination at the upper and lower surfaces of the substrate to decrease total reflection at the interfaces, thereby improving light emitting efficiency.

Abstract: A semiconductor light-emitting device is provided. The semiconductor light-emitting device includes a laminated semiconductor structure portion composed of at least a first conductivity type first cladding layer, an active layer and a second conductivity type second cladding layer, wherein an outer peripheral surface of this laminated semiconductor structure portion is formed as a curved surface shape which is protrusively curved or bent with respect to the outside of the laminated direction.

Abstract: In a side view LED, elongated first and second lead frames each have a finger extending therefrom. The finger of the first lead frame is disposed in parallel with that of the second lead frame. An LED chip and a protective device are mounted on mounting areas of the first and second lead frames, respectively and electrically connected to the first and second lead frames. A package body houses the first and second lead frames to form first and second opened areas. The first opened area is externally opened around the LED chip, the second opened area is externally opened around the protective device, and the partition wall is formed therebetween. First and second encapsulants are provided to the first and second opened areas, respectively to encapsulate the LED chip and protective device, respectively. At least the first encapsulant is transparent.

Abstract: A method of manufacturing an electron-emitting device with a stable electrical characteristics without variation per each of the devices is provided, by forming, on a substrate, a cathode electrode, a carbon layer on the cathode electrode, and a gate electrode, disposing an anode electrode, and applying to the carbon layer a voltage higher than that at a driving of the electron-emitting device.

Abstract: A structure of a gallium nitride light emitting diode has a transparent conductive window layer including a diffusion barrier layer, an ohmic contact layer, and a window layer. By using the added domain contact layer, the diffusion barrier layer and the P-type semiconductor layer of the light emitting diode are put into ohmic contact. And then, the rising of the contact resistivity is barred by applying the diffusion barrier layer to block the diffusion of the window layer from the contact with the domain contact layer so as to lower down the operating voltage and advance the transparency.

Abstract: The invention relates to a nitride semiconductor LED and a fabrication method thereof. In the LED, a first nitride semiconductor layer, an active region a second nitride semiconductor layer of a light emitting structure are formed in their order on a transparent substrate. A dielectric mirror layer is formed on the underside of the substrate, and has at least a pair of alternating first dielectric film of a first refractivity and a second dielectric film of a second refractivity larger than the first refractivity. A lateral insulation layer is formed on the side of the substrate and the light emitting structure. The LED of the invention effectively collimate undesirably-directed light rays, which may be otherwise extinguished, to maximize luminous efficiency, and are protected by the dielectric mirror layer formed on the side thereof to remarkably improve ESD characteristics.

Abstract: A semiconductor light emitting device including a p-type electrode structure and having a low contact resistance and high reflectance is provided. The semiconductor light emitting device includes a transparent substrate, an electron injection layer having first and second regions on the transparent substrate, an active region formed on the first region, a hole injection layer on the active layer, a first electrode structure on the second region, and a second electrode structure on the hole injection layer, and includes a first layer including nitrogen and a second layer including Pd. The low contact resistance and high reflectance can be obtained by forming a trivalent compound layer composed of Pd—Ga—N at an interface between the hole injection layer, which is composed of p-GaN, and the metal layer of the p-type electrode.

Abstract: A high-efficiency light emitting diode is provided. The light emitting diode includes a substrate; a first compound semiconductor layer formed on the top surface of the substrate; a first electrode formed on a region of the first compound semiconductor layer; an active layer formed on a region of the first compound semiconductor layer excluding the region with the first electrode layer, in which 430-nm or less wavelength light is generated; a second compound semiconductor layer formed on the active layer; and a second electrode formed on the second compound semiconductor layer, with a filling ratio of 20–80% with respect to the area of the top surface of the substrate. The light emission of a 430-nm or less light emitting diode can be enhanced by adjusting the size of the p-type second electrode within the range of 20–80%.

Abstract: A switching semiconductor device includes a first compound layer formed on a single crystal substrate which includes silicon carbide or sapphire, and including a general formula InxGa1-xN, where 0?x?1; a second compound layer formed on the first compound layer, and including a general formula InyALzGa1-y-zN, where 0?y?1 and 0<z?1; and a gate electrode formed on the second compound layer. The gate electrode is electrically connected to a resistance element formed on a first interlayer insulating film that covers the gate electrode, through a metal wiring formed on a second interlayer insulating film that covers the first interlayer insulating film.