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Class 257/E21.553 - In region recessed from surface, e.g., in recess, groove, tub or trench region (EPO)


Subclass of Class 257 - Active solid-state devices (e.g., transistors, solid-state diodes)
Definition: This subclass is indented under subclass E21.552. This subclass
No. of patents: 169
Last issue date: 10/14/2008


1          
NumberTitleIssue Date
7436030Strained MOSFETs on separated silicon layers
A method of fabricating and a structure of an IC incorporating strained MOSFETs on separated silicon layers are disclosed. N-channel field effect transistors (nFET) and P-channel FETs (pFET) are formed on the separated silicon layers, respectively. Shallow trench in...
10/14/2008
7371693Manufacturing method of semiconductor device with chamfering
Cost is reduced and reliability is improved with a CSP type semiconductor device. A glass substrate which works as a supporting plate is bonded through an adhesive to a first surface of a semiconductor wafer on which first wirings are formed. Thickness of the semico...
05/13/2008
7365413Reduced power distribution mesh resistance using a modified swiss-cheese slotting pattern
Electrical interconnects with a slotting pattern are provided in the present invention. In addition, the masks for making such interconnects and semiconductor devices incorporating such interconnects are also provided in the present invention. The slotting pattern m...
04/29/2008
7361572STI liner modification method
A new and improved liner modification method for a liner oxide layer in an STI trench is disclosed. According to the method, an STI trench is etched in a substrate and a liner oxide layer is formed on the trench surfaces by oxidation techniques. The method further i...
04/22/2008
7314792Method for fabricating transistor of semiconductor device
A method for fabricating a transistor of a semiconductor device is provided. The method includes: forming device isolation layers in a substrate including a bottom structure, thereby defining an active region; etching the active region to a predetermined depth to fo...
01/01/2008
7279396Methods of forming trench isolation regions with nitride liner
The invention includes methods of forming trench isolation regions. In one implementation, a masking material is formed over a semiconductor substrate. The masking material comprises at least one of tungsten, titanium nitride and amorphous carbon. An opening is form...
10/09/2007
7220640Method of fabricating recess transistor in integrated circuit device and recess transistor in integrated circuit device fabricated by the same
Provided is a method of fabricating a recess transistor in an integrated circuit device. In the provided method, a device isolation region, which contacts to the sidewall of a gate trench and a substrate region remaining between the sidewall of the device isolation ...
05/22/2007
7199450Materials and method to seal vias in silicon substrates
Sealing a via using a soventless, low viscosity, high temperature stable polymer or a high solids content polymer solution of low viscosity, where the polymeric material is impregnated within the via at an elevated temperature. A supply chamber is introduced to admi...
04/03/2007
7157781Enhancement of membrane characteristics in semiconductor device with membrane
A semiconductor device having a membrane includes a semiconductor substrate, which has an active surface, and a membrane. A cavity is located between the active surface and the membrane and hermetically sealed. The membrane includes a first film, which has a through...
01/02/2007
6800917Bladed silicon-on-insulator semiconductor devices and method of making
A semiconductor device includes an elongated, blade-shaped semiconductor element isolated from a surrounding region of a semiconductor substrate by buried and side oxide layers. A polysilicon post disposed at one end of the element has a bottom portion extending thr...
10/05/2004
6620704Method of fabricating low stress semiconductor devices with thermal oxide isolation
A method is provided of fabricating a semiconductor device that includes forming a silicon oxide film on a semiconductor substrate. A silicon nitrite film may be formed on the silicon oxide film. A portion of the silicon nitrite film and the silicon oxide...
09/16/2003
6610580Flash memory array and a method and system of fabrication thereof
In a first aspect of the present invention, a flash memory array is disclosed. The flash memory array comprises a substrate comprising active regions, wherein the active regions are defined by a layer of nitride, the layer of nitride including a top surfa...
08/26/2003
6610581Method of forming isolation film in semiconductor device
There is disclosed a method of forming an isolation film in a semiconductor device, the method including the steps of: forming a silicon oxide film and a silicon nitride film in that order on a silicon substrate, using a resist pattern as a mask, etching ...
08/26/2003
6599798Method of preparing buried LOCOS collar in trench DRAMS
The vertical DRAM capacitor with a buried LOCOS collar characterized by: a self-aligned bottle and gas phase doping; no consumption of silicon at the depth of the buried strap; no reduction of trench diameter; and a nitride layer to protect trench sidewal...
07/29/2003
6580088Semiconductor devices and methods for manufacturing the same
Certain embodiments relate to semiconductor devices having an improved dielectric strength and methods for manufacturing the same. A semiconductor device 1000 may have a field effect transistor 100. The field effect transistor 100 includes a gate dielectr...
06/17/2003
6559032Method of fabricating an isolation structure on a semiconductor substrate
A method of forming an isolated structure of sufficient size to permit the fabrication of an active device thereon is comprised of the steps of depositing a gate oxide layer on a substrate. Material, such as a polysilicon layer and a nitride layer, is dep...
05/06/2003
6489205Semiconductor device and method for manufacturing the same
There is described a method for manufacturing a semiconductor device, in which an isolation oxide film having a superior dimensional accuracy and an isolation oxide film of a high withstanding voltage are manufactured in simple processes. A semiconductor ...
12/03/2002
6479370Isolated structure and method of fabricating such a structure on a substrate
A method of forming an isolated structure of sufficient size to permit the fabrication of an active device thereon is comprised of the steps of depositing a gate oxide layer on a substrate. Material, such as a polysilicon layer and a nitride layer, is dep...
11/12/2002
6465865Isolated structure and method of fabricating such a structure on a substrate
A method of forming an isolated structure of sufficient size to permit the fabrication of an active device thereon is comprised of the steps of depositing a gate oxide layer on a substrate. Material, such as a polysilicon layer and a nitride layer, is dep...
10/15/2002
6376331Method for manufacturing a semiconductor device
A semiconductor device is herein disclosed which comprises a plurality of element regions formed on a first conductive type semiconductor substrate, element isolation regions for isolating the element regions from each other, and gate electrodes on parts ...
04/23/2002
6340624Method of forming a circuitry isolation region within a semiconductive wafer
A method of forming a circuitry isolation region within a semiconductive wafer comprises defining active area and isolation area over a semiconductive wafer. Semiconductive wafer material within the isolation area is wet etched using an etch chemistry whi...
01/22/2002
6326672LOCOS fabrication processes and semiconductive material structures
In one aspect, the invention encompasses a LOCOS process. A pad oxide layer is provided over a silicon-comprising substrate. A silicon nitride layer is provided over the pad oxide layer and patterned with the pad oxide layer to form masking blocks. The pa...
12/04/2001
6306726Method of forming field oxide
In one aspect, the invention encompasses a LOCOS process. A pad oxide layer is provided over a silicon-comprising substrate. A silicon nitride layer is provided over the pad oxide layer and patterned with the pad oxide layer to form masking blocks. The pa...
10/23/2001
6274455Method for isolating semiconductor device
A method for isolating a semiconductor device is disclosed. The method includes the steps of forming a buffer film on a semiconductor substrate and an oxide prevention film on the buffer film, etching the buffer,film and the oxide prevention film of a dev...
08/14/2001
6258694Fabrication method of a device isolation structure
A fabrication method of a device isolation structure. A patterned mask layer is formed on a silicon substrate. A dopant is doped into an exposed substrate to prevent a bird's beak silicon region from being oxidized in a first doping step. A spacer is form...
07/10/2001
6255218Semiconductor device and fabrication method thereof
A semiconductor device that enables to avoid short-circuit between an interconnection film and an underlying conductive region even when a contact hole is partially overlapped with an isolation insulator. A conductive region is selectively formed in an ac...
07/03/2001
6251750Method for manufacturing shallow trench isolation
A method of manufacturing a shallow trench isolation in a substrate. The substrate has a pad oxide layer and a mask layer formed thereon in sequence and a trench penetrating through the mask layer and the pad oxide layer and into the substrate. A thermal ...
06/26/2001
6245643Method of removing polysilicon residual in a LOCOS isolation process using an etching selectivity solution
A method of forming a field oxide isolation region includes: forming a first pad oxide layer over a semiconductor substrate; forming a silicon nitride layer over the first pad oxide layer; patterning and etching the silicon nitride layer and the first pad...
06/12/2001
6239003Method of simultaneous fabrication of isolation and gate regions in a semiconductor device
A method of forming a semiconductor device includes forming a moat stack outwardly from a substrate, the moat stack comprising a dielectric pad disposed outwardly from the substrate, a silicon buffer structure disposed outwardly from the dielectric pad, a...
05/29/2001
6239002Thermal oxidizing method for forming with attenuated surface sensitivity ozone-teos silicon oxide dielectric layer upon a thermally oxidized silicon substrate layer
A method for forming a trench isolation region within a trench within a silicon substrate. There is first provided a silicon substrate having a trench formed therein. There is then formed over the silicon substrate and filling the trench a silicon oxide t...
05/29/2001
6225186Method for fabricating LOCOS isolation
A method for fabricating a LOCOS isolation in accordance with the present invention, involves first forming a masking layer on the active region of a silicon substrate. Next, the masking layer is used as the etching mask and the silicon substrate is etche...
05/01/2001
6225674Semiconductor structure and method of manufacture
A semiconductor structure (10) having device isolation structures (43, 44) and shielding structures (39, 40). The shielding structures (39, 40) are formed in a semiconductor material (11) and the device isolation structures (43, 44) are formed within the ...
05/01/2001
6184106Method for manufacturing a semiconductor device
The present invention provides a method of forming an isolation region comprising a trench isolation region involved in a semiconductor device. A silicon oxide film is grown on a surface of a trench groove formed within a semiconductor substrate, followed...
02/06/2001
6175147Device isolation for semiconductor devices
Exemplary embodiments of the present invention disclose a semiconductor assembly having at least one isolation structure formed. The semiconductor assembly comprises: a first trench in a semiconductive substrate; a second trench extending the overall tren...
01/16/2001
6153482Method for fabricating LOCOS isolation having a planar surface which includes having the polish stop layer at a lower level than the LOCOS formation
A method for fabricating LOCOS isolation having a planar surface. The method utilizes a polysilicon spacer to prevent bird beak. The method adds the steps of forming a polishing stop layer and removing said edge-protrusion portion of the local oxide by ch...
11/28/2000
6144047Semiconductor device having impurity concentrations for preventing a parasitic channel
A semiconductor device is herein disclosed which comprises a plurality of element regions 50 formed on a first conductive type semiconductor substrate 60, element isolation regions 58 for isolating the element regions from each other, and gate electrodes ...
11/07/2000
6133118Edge polysilicon buffer LOCOS isolation
The present invention discloses an isolation method for fabricating isolation regions with less bird's peak sizes in semiconductor devices. A first pad oxide layer and a silicon nitride layer are first formed on a wafer substrate. After an undercut proces...
10/17/2000
6118167Polysilicon coated nitride-lined shallow trench
A polycrystalline silicon coated nitride-lined shallow trench technique for isolating active regions on an integrated circuit involves reducing the oxide encroachment and the "bird's beak" structure. The technique involves forming an isolation trench, or ...
09/12/2000
6103595Assisted local oxidation of silicon
A method for forming a semiconductor device comprises the steps of providing a semiconductor substrate having first and second surfaces, the second surface having an inferior plane with respect to the first surface. An oxidizing-resistant layer such as ni...
08/15/2000
6100162Method of forming a circuitry isolation region within a semiconductive wafer
A method of forming a circuitry isolation region within a semiconductive wafer comprises defining active area and isolation area over a semiconductive wafer. Semiconductive wafer material within the isolation area is wet etched using an etch chemistry whi...
08/08/2000
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