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Class 438/46 - Compound semiconductor


Subclass of Class 438 - Semiconductor device manufacturing: process
Definition: Process for making a device emissive of electromagnetic
No. of patents: 982
Last issue date: 05/29/2012


          11            
NumberTitleIssue Date
6972207Method of manufacturing annular oblique light illumination apparatus and flexible wiring substrate
An annular oblique light illumination apparatus manufactured by using a flexible wiring substrate in which a plurality of arcuate zonal wiring patterns each in the form of a developed frustconical shape as a light emitting device arranging surface when cut along the...
12/06/2005
6969873Nitride gallium compound semiconductor light emission device
A gallium nitride compound semiconductor light emission device includes: a substrate; an n-type electrode region comprising an n-type transmissive electrode; a gallium nitride compound semiconductor multilayer structure including an active layer; and a p-type electr...
11/29/2005
6967355Group III-nitride on Si using epitaxial BP buffer layer
A semiconductor device and method for forming the same includes a silicon (111) single crystal substrate, and an epitaxial boron phosphide (BP) layer disposed on the substrate. A group III-nitride semiconductor epitaxial layer is disposed on the BP epitaxial layer.
11/22/2005
6967119Semiconductor laser device and method of fabricating the same
There is provided a semiconductor laser device having on a single substrate a plurality of laser portions each oscillating laser light of a different wavelength, the plurality of laser portions containing different types, respectively, of dopant. There is also provi...
11/22/2005
6967122Group III nitride compound semiconductor and method for manufacturing the same
A sapphire substrate 1 is etched so that each trench has a width of 10 μm and a depth of 10 μm were formed at 10 μm of intervals in a stripe pattern. Next, an AlN buffer layer 2 having a thickness of approximately 40 nm is formed mainly on the upper...
11/22/2005
6967353Semiconductor light emitting device and fabrication method thereof
A semiconductor light emitting device includes a crystal layer formed on a substrate, the crystal layer having a tilt crystal plane tilted from the principal plane of the substrate, and a first conductive type layer, an active layer, and a second conductive type lay...
11/22/2005
6967116Light emitting device incorporating a luminescent material
A light emitting device uses a source of exciting radiation such as an light emitting diode to excite a photo luminescent material to provide a source of visible light. The photo luminescent material is loaded into a low density material such as a xerogel or an aero...
11/22/2005
6967117Method for producing high brightness LED
The present invention discloses a method for producing a high brightness LED (light emitting diode). The method primarily comprises steps of: a) providing a temporary substrate for epitaxy; b) forming LED epitaxial layers on said temporary substrate, wherein said LE...
11/22/2005
6967112Three-dimensional quantum dot structure for infrared photodetection
A 3D quantum dot optical path structure is provided, along with a method for selectively forming a 3D quantum dot optical path. The method comprises: forming a single crystal Si substrate with a surface; forming a Si feature in the substrate, such as a via, trench, ...
11/22/2005
6964914Method of manufacturing a free-standing substrate made of monocrystalline semi-conductor material
A method for manufacturing a free-standing substrate made of a semiconductor material. A first assembly is provided and it includes a relatively thinner nucleation layer of a first material, a support of a second material, and a removable bonding interface defined b...
11/15/2005
6965626Single mode VCSEL
A VCSEL having a metallic heat spreading layer adjacent a semiconductor buffer layer containing an insulating structure. The heat spreading layer includes an opening that enables light emitted by an active region to reflect from a distributed Bragg reflector (DBR) t...
11/15/2005
6964705Method for producing semiconductor crystal
A seed layer as a laminate of a GaN layer (second seed layer) and an AlN buffer layer (first seed layer) is formed on a sapphire substrate. A front surface thereof is etched in the form of stripes with a stripe width (seed width) of about 5 μm, a wing width of abou...
11/15/2005
6960490Method and resulting structure for manufacturing semiconductor substrates
A method of manufacturing bonded substrates. The method includes providing a metallic substrate. The metal substrate has a predetermined thickness. The method also includes bonding a first thickness of compound semiconductor material overlying the metallic substrate...
11/01/2005
6960482Method of fabricating nitride semiconductor and method of fabricating semiconductor device
A method of fabricating a nitride semiconductor includes the steps of forming a nitride semiconductor doped with a p-type impurity, treating the surface of the nitride semiconductor in an atmosphere containing active oxygen to remove carbon remaining on the surface ...
11/01/2005
6960486Mid-IR microchip laser: ZnS:Cr2+ laser with saturable absorber material
A method of fabrication of laser gain material and utilization of such media includes the steps of introducing a transitional metal, preferably Cr2+ thin film of controllable thickness on the ZnS crystal facets after crystal growth by means of pulse laser...
11/01/2005
6955936Methods and devices related to electrode pads for p-type Group III nitride compound semiconductors
An electrode pad for a Group III nitride compound semiconductor having p-type conduction includes a triple layer structure having first, second, and third metal layers, formed on an electrode layer. A protection film with a window exposing a central portion of the t...
10/18/2005
6955719Manufacturing methods for semiconductor devices with multiple III-V material layers
A method for fabricating semiconductor devices with thin (e.g., submicron) and/or thick (e.g., between 1 micron and 100 microns thick) Group III nitride layers during a single epitaxial run is provided, the layers exhibiting sharp layer-to-layer interfaces. Accordin...
10/18/2005
6955933Light emitting diodes with graded composition active regions
A light emitting device in accordance with an embodiment of the present invention includes a first semiconductor layer of a first conductivity type having a first surface, and an active region formed overlying the first semiconductor layer. The active region include...
10/18/2005
6953741Methods of fabricating contacts for semiconductor devices utilizing a pre-flow process
Methods for fabricating a contact of a semiconductor device are provided by patterning an interlayer dielectric of the semiconductor device to form a contact hole that exposes a silicon-based region of a first impurity type. The exposed silicon-based region is doped...
10/11/2005
6953729Heterojunction field effect transistor and manufacturing method thereof
In a heterojunction FET in which source and drain areas are formed by carrying out high temperature annealing process after carrying out ion implantation in areas to be formed into source and drain areas, conventionally, the N-type carrier supply layer and the N-typ...
10/11/2005
6953703Method of making a semiconductor device with exposure of sapphire substrate to activated nitrogen
An epitaxial growth system comprises a housing around an epitaxial growth chamber. A substrate support is located within the growth chamber. A gallium source introduces gallium into the growth chamber and directs the gallium towards the substrate. An activated nitro...
10/11/2005
6952024Group III nitride LED with silicon carbide cladding layer
A semiconductor structure for light emitting devices includes a Group III nitride active layer positioned between a silicon carbide cladding layer and a Group III nitride cladding layer, wherein the silicon carbide cladding layer and the Group III nitride cladding l...
10/04/2005
6949395Method of making diode having reflective layer
A method of forming a light emitting diode includes forming a transparent substrate and a GaN buffer layer on the transparent substrate. An n-GaN layer is formed on the buffer layer. An active layer is formed on the n-GaN layer. A p-GaN layer is formed on the active...
09/27/2005
6946313Method of making an aligned electrode on a semiconductor structure
A method of making an electrode on a semiconductor device including depositing metal on a top surface of a semiconductor structure, and defining a first region of the semiconductor structure for a first electrode by forming a mask over the metal. The mask has an ope...
09/20/2005
6946317Method of fabricating heteroepitaxial microstructures
An efficient method of fabricating a high-quality microstructure having a smooth surface. The method includes detaching a layer from a base structure to provide a carrier substrate having a detached surface, and then forming a microstructure on the detached surface ...
09/20/2005
6946312Semiconductor light emitting device and its manufacture
A ball-up preventive layer is formed on a first substrate. A bonding layer made of eutectic material is formed on the ball-up preventive layer. A semiconductor light emitting structure is formed on a second substrate. A first electrode is formed at least partially o...
09/20/2005
6946309III-Phosphide and III-Arsenide flip chip light-emitting devices
A light-emitting semiconductor device includes a stack of layers including an active region. The active region includes a semiconductor selected from the group consisting of III-Phosphides, III-Arsenides, and alloys thereof. A superstrate substantially transparent t...
09/20/2005
6942731Method for improving the efficiency of epitaxially produced quantum dot semiconductor components
The invention relates to a method for improving the efficiency of epitaxially grown quantum dot semiconductor components having at least one quantum dot layer. The efficiency of semiconductor components containing an active medium consisting of quantum dots is often...
09/13/2005
6943050Method for making semiconductor device, semiconductor element composite, electro-optical apparatus, and electronic system
The invention provides a method of fabricating a semiconductor device in which a more satisfactory selective etching ratio is ensured when AlGaAs is used for a layer provided with a semiconductor element, and provides a semiconductor element composite, an electro-op...
09/13/2005
6940098Semiconductor base and its manufacturing method, and semiconductor crystal manufacturing method
A growth plane of substrate 1 is processed to have a concavo-convex surface. The bottom of the concave part may be masked. When a crystal is grown by vapor phase growth using this substrate, an ingredient gas does not sufficiently reach the inside of a concav...
09/06/2005
6940223Film forming apparatus and method of manufacturing light emitting device
The problem regarding volatileness of a solvent in an EL forming material, which occurs in adopting printing, are solved. An EL layer is formed in a pixel portion of a light emitting device by printing. Upon formation of the EL layer, a printing chamber is pressuriz...
09/06/2005
6936851Semiconductor light-emitting device and method for manufacturing the same
Semiconductor light emitting device and methods for its manufacture comprises a plurality of textured district defined on the surface of the substrate. The initial inclined layer deposition serves to guide the extended defects to designated gettering centers in the ...
08/30/2005
6936858Semiconductor light-emitting diode
A light-emitting diode includes: a semiconductor substrate; and a layered structure, made of an AlGaInP type compound semiconductor material and provided on the semiconductor substrate. The layered structure includes: a light-emitting structure composed of a pair of...
08/30/2005
6936357Bulk GaN and ALGaN single crystals
Bulk GaN and AlGaN single crystal boules, preferably fabricated using a modified HVPE process, are provided. The single crystal boules typically have a volume in excess of 4 cubic centimeters with a minimum dimension of approximately 1 centimeter. If desired, the bu...
08/30/2005
6936487Semiconductor device with ohmic electrode formed on compound semiconductor having wide band gap and its manufacture method
A first film of rare-earth metal is formed on a semiconductor region of compound semiconductor exposed on a substrate. A second film essentially comprising silicon is formed on the surface of the first film. The first and second films are heated to silicidate at lea...
08/30/2005
6936488Homoepitaxial gallium-nitride-based light emitting device and method for producing
A light emitting device comprised of a light emitting semiconductor active region disposed on a substrate comprised of GaN having a dislocation density less than 105 per cm2 is provided. ...
08/30/2005
6936490Semiconductor wafer and its manufacturing method
A method of epitaxially growing a SiC film on a Si substrate, including: (a) supplying a raw material gas containing a gas having P (phosphorus) element and a gas having B (boron) element on a Si substrate, and thereby synthesizing an amorphous BP thin film having a...
08/30/2005
6933529Active matrix type organic light emitting diode device and thin film transistor thereof
An active matrix type organic light emitting diode device and a thin film transistor thereof are disclosed in the present invention. The driving thin film transistor for an active matrix type organic light emitting diode (AMOLED) device having first and second elect...
08/23/2005
6933213Method for fabricating group III-V compound semiconductor substrate
Provided is a compound semiconductor substrate fabrication method involving: preparing a base substrate; forming a first buffer layer on the prepared base substrate; forming a semiconductor layer on the first buffer layer; and removing the base substrate. ...
08/23/2005
6933160Method for manufacturing of a vertical light emitting device structure
Disclosed are a vertical GaN based light-emitting device (LED) structure and the manufacturing method thereof. In the structure and the corresponding method, a substrate unit having a mask is used to form a multi-layer epitaxial structure and the substrate and the m...
08/23/2005
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