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Class 257/E33.003 - Particular crystalline orientation or structure (EPO)


Subclass of Class 257 - Active solid-state devices (e.g., transistors, solid-state diodes)
Definition: This subclass is indented under subclass E33.002. This subclass
No. of patents: 90
Last issue date: 10/28/2008


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NumberTitleIssue Date
7442589System and method for uniform multi-plane silicon oxide layer formation for optical applications
Methods and systems for growing uniform oxide layers include an example method including growing a first layer of oxide on first and second facets of the substrate, with the first facet having a faster oxide growth rate. The oxide is removed from the first facet and...
10/28/2008
7439110Strained HOT (hybrid orientation technology) MOSFETs
A strained HOT MOSFET fabrication method. The MOSFET fabrication method includes providing a semiconductor structure which includes (a) a first semiconductor layer having a first crystallographic orientation, (b) a buried insulating layer on top of the first semicon...
10/21/2008
7436873Optical device and semiconductor laser oscillator
In an optical device, a slab layer includes an active layer sandwiched between cladding layers. The slab layer has a periodic refractive index profile structure in a two-dimensional plane, as a two-dimensional slab photonic crystal structure, and a linear defect reg...
10/14/2008
7384810Image display device and method for manufacturing the same
Only a region where TFTs constituting a high-performance circuit will be disposed in a precursor semiconductor film PCS on an insulating substrate GLS with an insulating layer UCL serving as an undercoat is irradiated with a first energy beam LSR so as to be poly-cr...
06/10/2008
7368763Semiconductor device and manufacturing method thereof
A high quality silicon carbide (SiC) layer being substantially lower in threading dislocation density than a prior layer is formed on silicon (Si) substrate. A semiconductor device is fabricated in such a way that a semiconductor buffer layer containing Si in part a...
05/06/2008
7319258Semiconductor-on-insulator chip with<100>-oriented transistors
A semiconductor-on-insulator device includes a silicon active layer with a crystal direction placed over an insulator layer. The insulator layer is placed onto a substrate with a crystal direction. Transistors oriented on a direction are formed on ...
01/15/2008
7285799Semiconductor light emitting devices including in-plane light emitting layers
A semiconductor light emitting device includes a planar light emitting layer with a wurtzite crystal structure having a axis roughly parallel to the plane of the layer, referred to as an in-plane light emitting layer. The in-plane light emitting layer may inc...
10/23/2007
7256109Isotropic polycrystalline silicon
A high-quality isotropic polycrystalline silicon (poly-Si) and a method for fabricating high quality isotropic poly-Si film are provided. The method includes forming a film of amorphous silicon (a-Si) and using a MISPC process to form poly-Si film in a first area of...
08/14/2007
7250640Production of a GaN bulk crystal substrate and a semiconductor device formed on a GaN bulk crystal substrate
A method of making a bulk crystal substrate of a GaN single crystal includes the steps of forming a molten flux of an alkali metal in a reaction vessel and causing a growth of a GaN single crystal from the molten flux, wherein the growth is continued while replenish...
07/31/2007
7173289Light emitting diode structure having photonic crystals
A light emitting diode (LED) structure includes a substrate with a surface and cylindrical photonic crystals, a first type doping semiconductor layer, a first electrode, a light emitting layer, a second type doping semiconductor layer and a second electrode. The fir...
02/06/2007
7129107Process for producing a semiconductor light-emitting device
Semiconductor light-emitting devices are provided. The semiconductor light-emitting devices include a substrate and a crystal layer selectively grown thereon at least a portion of the crystal layer is oriented along a plane that slants to or diagonally intersect a p...
10/31/2006
7129514Image display unit
Semiconductor light-emitting devices are provided. The semiconductor light-emitting devices include a substrate and a crystal layer selectively grown thereon at least a portion of the crystal layer is oriented along a plane that slants to or diagonally intersect a p...
10/31/2006
7129515Lighting system
Semiconductor light-emitting devices are provided. The semiconductor light-emitting devices include a substrate and a crystal layer selectively grown thereon at least a portion of the crystal layer is oriented along a plane that slants to or diagonally intersect a p...
10/31/2006
7122826Image display unit
Semiconductor light-emitting devices are provided. The semiconductor light-emitting devices include a substrate and a crystal layer selectively grown thereon at least a portion of the crystal layer is oriented along a plane that slants to or diagonally intersect a p...
10/17/2006
7122825Lighting system
Semiconductor light-emitting devices are provided. The semiconductor light-emitting devices include a substrate and a crystal layer selectively grown thereon at least a portion of the crystal layer is oriented along a plane that slants to or diagonally intersect a p...
10/17/2006
7122394Process for producing a semiconductor light-emitting device
Semiconductor light-emitting devices are provided. The semiconductor light-emitting devices include a substrate and a crystal layer selectively grown thereon at least a portion of the crystal layer is oriented along a plane that slants to or diagonally intersect a p...
10/17/2006
7084081Display device and method of manufacturing the same
A display device includes a display area composed of pixels in a matrix. Each pixel has a light-emitting element and a driving element to supply a driving current to the light-emitting element. The driving element includes a thin film transistor with a semiconductor...
08/01/2006
6693033Method of removing an amorphous oxide from a monocrystalline surface
A method of removing an amorphous oxide from a surface of a monocrystalline substrate is provided. The method includes depositing a passivation material overlying the amorphous oxide. The monocrystalline substrate is then heated so that the amorphous oxid...
02/17/2004
6685773Crystal growth method for nitride semiconductor, nitride semiconductor light emitting device, and method for producing the same
A crystal growth method for growing a nitride semiconductor crystal on a sapphire substrate in a vapor phase, includes the steps of: providing a sapphire substrate having a substrate orientation inclined by about 0.05° to about 0.2° from a orienta...
02/03/2004
6680492Semiconductor light emitting device and method for producing the same
A light emitting device employing gallium nitride type compound semiconductor which generates no crystal defect, dislocation and can be separated easily to chips by cleavage and a method for producing the same are provided. As a substrate on which gallium...
01/20/2004
6653663Nitride semiconductor device
The nitride semiconductor device includes: a substrate made of a III-V group compound semiconductor containing nitride; and a function region made of a III-V group compound semiconductor layer containing nitride formed on a main surface of the substrate. ...
11/25/2003
6649288Nitride film
A Group III nitride film is directly grown on a crystalline substrate along the C-axis of the substrate, and includes at least Al. The Group III nitride film has a hexagonal crystal system, and the lattice constant "c" of the c-axis of the Group III nitri...
11/18/2003
6635901Semiconductor device including an InGaAIN layer
A semiconductor device includes a silicon substrate and a compound semiconductor layer formed on a main plane of the silicon substrate. The compound semiconductor layer is represented by the general formula of Inx Gay Alz ...
10/21/2003
6608328Semiconductor light emitting diode on a misoriented substrate
A light emitting diode is made by a compound semiconductor in which light is emitted from an active region with a multiple quantum well structure. The active region is sandwiched by InGaAlP-based lower and upper cladding layers. Emission efficiency of the...
08/19/2003
6569704Group III-V semiconductor light emitting devices with reduced piezoelectric fields and increased efficiency
An optical semiconductor device having a plurality of GaN-based semiconductor layers containing a strained quantum well layer in which the strained quantum well layer has a piezoelectric field that depends on the orientation of the strained quantum well l...
05/27/2003
6525345Semiconductor photonic device
A semiconductor photonic device includes a Z-cut quartz substrate and a compound semiconductor layer presented by Inx Gay Alz N (where x+y+z=1, 0ࣘx ࣘ1, 0ࣘyࣘ1, and 0ࣘzࣘ1) formed on the Z-cut quartz substrate....
02/25/2003
6515313High efficiency light emitters with reduced polarization-induced charges
Naturally occurring polarization-induced electric fields in a semiconductor light emitter with crystal layers grown along a polar direction are reduced, canceled or reversed to improve the emitter's operating efficiency and carrier confinement. This is ac...
02/04/2003
6465812Semiconductor light emitting device
A semiconductor light emitting device of the present invention at least includes: a GaAs substrate whose principal plane is inclined from a (100) plane in a [011] orientation; a first buffer layer of Alx Ga1-x As (0ࣘxࣘ1) provided...
10/15/2002
6465809Bonding type semiconductor substrate, semiconductor light emitting element, and preparation process thereof
The process comprises a step of growing epitaxially mixed crystals of a compound semiconductor represented by the composition formula Inx (Ga1-y Aly)1-x P on a GaAs substrate 12 to form an epi-wafer having an n-...
10/15/2002
6459712Semiconductor devices
An insulating member (4) of an amorphous structure partially opened to expose a substrate (1; 1, 2, 3) is formed on the substrate. At least a compound semiconductor (5, 51, 52) containing at least nitrogen as a constituent element is deposited on the insu...
10/01/2002
6437363Semiconductor photonic device
A semiconductor photonic device includes a substrate having a cleavage plane perpendicular to a principal plane thereof; a ZnO film on the substrate; and a compound semiconductor layer expressed by Inx Gay Alz N (x+y+z=1, ...
08/20/2002
6377596Semiconductor materials, methods for fabricating semiconductor materials, and semiconductor devices
An insulating member (4) of an amorphous structure partially opened to expose a substrate (1; 1, 2, 3) is formed on the substrate. At least a compound semiconductor (5, 51, 52) containing at least nitrogen as a constituent element is deposited on the insu...
04/23/2002
6376866GaN semiconductor light emitting device having a group II-VI substrate
A light emitting device employing gallium nitride type compound semiconductor which generates no crystal defect, dislocation and can be separated easily to chips by cleavage and a method for producing the same are provided. As a substrate on which gallium...
04/23/2002
6350996Light emitting diode device
A light emitting diode device includes a light emitting diode and a non-linear element which are arranged on a substrate. The non-linear element is composed of an organic compound layer....
02/26/2002
6252255Crystal growth method for nitride semiconductor, nitride light emitting device, and method for producing the same
A crystal growth method for growing a nitride semiconductor crystal on a sapphire substrate in a vapor phase, includes the steps of: providing a sapphire substrate having a substrate orientation inclined by about 0.05° to about 0.2° from a orient...
06/26/2001
6239453Optoelectronic material, device using the same, and method for manufacturing optoelectronic material
This invention relates an optoelectronic material comprising a uniform medium with a controllable electric characteristic; and semiconductor ultrafine particles dispersed in the medium and having a mean particle size of 100 nm or less, and an application ...
05/29/2001
6229151Group III-V semiconductor light emitting devices with reduced piezoelectric fields and increased efficiency
An optical semiconductor device having a plurality of GaN-based semiconductor layers containing a strained quantum well layer in which the strained quantum well layer has a piezoelectric field that depends on the orientation of the strained quantum well l...
05/08/2001
6165809Method of fabricating light emitting diodes
According to a light emitting diode fabricating method, when a top surface of an n-type GaAs substrate is inclined at an angle θ with respect to a (1 0 0) plane, a front electrode is formed on a surface shaped portion of a current diffusing layer of a th...
12/26/2000
6100106Fabrication of nitride semiconductor light-emitting device
A process for producing a semiconductor light-emitting device, which comprises forming, on a substrate by crystal growth, a gallium nitride type compound semiconductor layer having a crystal face (0,0,0,1) which can be utilized as the end surface of an op...
08/08/2000
6080599Semiconductor optoelectric device and method of manufacturing the same
The present invention is intended to provide a semiconductor optoelectric device with high luminescent efficiency and a method of manufacturing the same. The semiconductor optoelectric device 18 according to the present invention is constructed by deposit...
06/27/2000
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