| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 438433000 | Dopant addition | 35 |
| 20080280417 | Method for manufacturing semiconductor device - An object is to provide a method for manufacturing, with high yield, a semiconductor device having a crystalline semiconductor layer even if a substrate with low upper temperature limit. A groove is formed in a part of a semiconductor substrate to form a semiconductor substrate that has a projecting portion, and a bonding layer is formed to cover the projecting portion. In addition, before the bonding layer is formed, a portion of the semiconductor substrate to be the projecting portion is irradiated with accelerated ions to form a brittle layer. After the bonding layer and the supporting substrate are bonded together, heat treatment for separation of the semiconductor substrate is performed to provide a semiconductor layer over the supporting substrate. The semiconductor layer is selectively etched, and a semiconductor element is formed and a semiconductor device is manufactured. | 11-13-2008 |
| 20080286936 | METHOD FOR PREPARING A SHALLOW TRENCH ISOLATION - A method for preparing a shallow trench isolation comprising the steps of forming at least one trench in a semiconductor substrate, performing an implanting process to implant nitrogen-containing dopants into an upper sidewall of the trench such that the concentration of the nitrogen-containing dopants in the upper sidewall is higher than that in the bottom sidewall of the trench, forming a spin-on dielectric layer filling the trench and covering the surface of the semiconductor substrate, performing a thermal oxidation process to form a silicon oxide layer covering the inner sidewall. Since the nitrogen-containing dopants can inhibit the oxidation rate and the concentration of the nitrogen-containing dopants in the upper inner sidewall is higher than that in the bottom inner sidewall of the trench, the thickness of the silicon oxide layer formed by the thermal oxidation process is larger at the bottom portion than at the upper portion of the trench. | 11-20-2008 |
| 20080293213 | METHOD FOR PREPARING A SHALLOW TRENCH ISOLATION - A method for preparing a shallow trench isolation comprising the steps of forming at least one trench in a semiconductor substrate, performing an implanting process to implant nitrogen-containing dopants into an upper sidewall of the trench such that the concentration of the nitrogen-containing dopants in the upper sidewall is higher than that in the bottom sidewall of the trench, forming a spin-on dielectric layer filling the trench and covering the surface of the semiconductor substrate, performing a thermal oxidation process to form a silicon oxide layer covering the inner sidewall. Since the nitrogen-containing dopants can inhibit the oxidation rate and the concentration of the nitrogen-containing dopants in the upper inner sidewall is higher than that in the bottom inner sidewall of the trench, the thickness of the silicon oxide layer formed by the thermal oxidation process is larger at the bottom portion than at the upper portion of the trench. | 11-27-2008 |
| 20080293214 | Method of fabricating trench-constrained isolation diffusion for semiconductor devices - A semiconductor substrate includes a pair of trenches filled with a dielectric material. Dopant introduced into the mesa between the trenches is limited from diffusing laterally when the substrate is subjected to thermal processing. Therefore, semiconductor devices can be spaced more closely together on the substrate, and the packing density of the devices can be increased. Also trench constrained doped region diffuse faster and deeper than unconstrained diffusions, thereby reducing the time and temperature needed to complete a desired depth diffusion. The technique may be used for semiconductor devices such as bipolar transistors as well as isolation regions that electrically isolate the devices from each other. In one group of embodiments, a buried layer is formed at an interface between an epitaxial layer and a substrate, at a location generally below the dopant in the mesa. When the substrate is subjected to thermal processing, the buried layer diffuses upward, the dopant in the mesa diffuses downward until the two dopants merge to form an isolation region or a sinker extending downward from the surface of the epitaxial layer to the buried layer. In another embodiment, dopant is implanted between dielectrically filled trenches at a high energy up to several MeV, then diffused, combining the benefits of deep implantation and trenched constrained diffusion to achive deep diffusions with a minimal thermal budget. | 11-27-2008 |
| 20080305613 | METHOD FOR FABRICATING AN SOI DEFINED SEMICONDUCTOR DEVICE - Methods are provided for fabricating a semiconductor on insulator (SOI) component on a semiconductor layer/insulator/substrate structure. The method includes forming one or more shallow trench isolation (STI) regions extending through the semiconductor layer to the insulator. First and second openings are etched through the STI and the insulator using the remaining SOI material in the semiconductor layer as an etch mask. N— and P-type ions are implanted into the substrate through the openings to form to form N-doped and P-doped regions therein, such as an anode and a cathode of a semiconductor diode structure. The N-doped and P-doped regions are closely spaced and precisely aligned to each other by the SOI material in the semiconductor layer. Electrical contacts are then made to the N-doped and P-doped regions. | 12-11-2008 |
| 20090042359 | Structure and Method of Producing Isolation with Non-Dopant Implantation - A method of forming an isolation trench structure is disclosed, the method includes forming an isolation trench in a semiconductor body associated with an isolation region, and implanting a non-dopant atom into the isolation trench, thereby forming a region to modify the halo profile in the semiconductor body. Subsequently, the isolation trench is filled with a dielectric material. | 02-12-2009 |
| 20090053874 | Method Of Forming Sti Regions In Electronic Devices - The invention relates to a method of manufacturing integrated circuits and in particular to the step of forming shallow trench isolation (STI) zones. The method according to the present invention leads to electronic devices and to integrated circuits having reduced narrow width effect and edge leakage. This is achieved by performing an extra implantation step near the edge of the STI zone, after formation of the SU zones. | 02-26-2009 |
| 20090130820 | METHOD FOR MANUFACTURING A SEMICONDUCTOR DEVICE - A method for manufacturing a semiconductor device includes forming a shallow trench isolation trench in a semiconductor substrate, and then forming a first oxide layer over the semiconductor substrate including the trench by exposing the semiconductor substrate including the shallow trench isolation trench to oxygen, and then implanting boron ions on the surface of the trench by performing an ion implantation on the STI trench process using BF | 05-21-2009 |
| 20090209083 | Hybrid Gap-fill Approach for STI Formation - A method of forming a shallow trench isolation region is provided. The method includes providing a semiconductor substrate comprising a top surface; forming an opening extending from the top surface into the semiconductor substrate; performing a conformal deposition method to fill a dielectric material into the opening; performing a first treatment on the dielectric material, wherein the first treatment provides an energy high enough for breaking bonds in the dielectric material; and performing a steam anneal on the dielectric material. | 08-20-2009 |
| 20110143519 | PRODUCTION OF ISOLATION TRENCHES WITH DIFFERENT SIDEWALL DOPINGS - A description is given of a method for producing isolation trenches ( | 06-16-2011 |
| 20110151642 | SEMICONDUCTOR DEVICE INCLUDING HIGH VOLTAGE AND LOW VOLTAGE MOS DEVICES - Methods and devices for forming both high-voltage and low-voltage transistors on a common substrate using a reduced number of processing steps are disclosed. An exemplary method includes forming at least a first high-voltage transistor well and a first low-voltage transistor well on a common substrate separated by an isolation structure extending a first depth into the substrate, using a first mask and first implantation process to simultaneously implant a doping material of a first conductivity type into a channel region of the low-voltage transistor well and a drain region for the high-voltage transistor well. | 06-23-2011 |
| 20110195559 | METHOD OF FORMING SHALLOW TRENCH ISOLATION STRUCTURE - An embodiment of the disclosure includes a method of forming a shallow trench isolation structure. A substrate is provided. The substrate includes a top surface. A trench is formed extending from the top surface into the substrate. The trench has sidewalls and a bottom surface. A liner oxide layer is formed on the sidewalls and the bottom surface. The liner oxide layer is treated in a plasma environment comprises at least one of NF | 08-11-2011 |
| 20110207289 | METHOD OF FABRICATING SEMICONDUCTOR DEVICE AND ELECTRONIC SYSTEM - Provided are a method of fabricating a semiconductor device and an electronic system. The method of fabricating a semiconductor device includes forming a well impurity region, a lower impurity region and an upper impurity region in a semiconductor substrate. The lower impurity region has a different conductivity type than a conductivity type of the well impurity region, the upper impurity region has a different conductivity type than the conductivity type of the lower impurity region, and the upper impurity region has a same conductivity type as the conductivity type of the well impurity region and has a higher impurity concentration than an impurity concentration of the well impurity region. The semiconductor substrate is etched to form lower semiconductor patterns, upper semiconductor patterns upwardly projecting from predetermined regions of the lower semiconductor patterns a first space between the upper semiconductor patterns projecting from the lower semiconductor patterns and a second space between the lower semiconductor patterns. The upper semiconductor patterns have sidewalls vertically arranged with facing sidewalls of the lower semiconductor patterns and facing each other, and the second space between the lower semiconductor patterns has a bottom surface disposed at a lower level than the lower impurity region. Top surfaces of the lower semiconductor patterns disposed between the upper semiconductor patterns are disposed at a lower level than the upper impurity region and disposed at a higher level than the lower impurity region. An isolation layer filling the first and second spaces between the lower semiconductor patterns and between the upper semiconductor patterns, respectively is formed. | 08-25-2011 |
| 20120135583 | METHODS OF MANUFACTURING THREE DIMENSIONAL SEMICONDUCTOR MEMORY DEVICES USING SUB-PLATES - A method of manufacturing a Three Dimensional (3D) semiconductor memory device can be provided by forming at least one trench in a plate stack structure to divide the plate stack structure into a plurality of sub-plate stack structures between forming a plurality of vertical active patterns in the plate stack structure and forming pads of a stepped structure from the plate stack structure. | 05-31-2012 |
| 20120178237 | DEEP WELL STRUCTURES WITH SINGLE DEPTH SHALLOW TRENCH ISOLATION REGIONS - A method of forming a semiconductor device includes defining a first type region and a second type region in a substrate, t separated by one or more inter-well STI structures; etching and filling, in at least one of the first type region and the second type region, one or more intra-well STI structures for isolating semiconductor devices formed within a same polarity well, wherein the one or more inter-well STI structures are formed at a substantially same depth with respect to the one or more intra-well STI structures; implanting, a main well region, wherein a bottom of the main well region is disposed above a bottom of the one or more inter-well and intra-well STI features; and implanting, one or more deep well regions that couple main well regions, wherein the one or more deep well regions are spaced away from the one or more inter-well STI structures. | 07-12-2012 |
| 20120184083 | SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF - A thin semiconductor wafer, on which a top surface structure and a bottom surface structure that form a semiconductor chip are formed, is affixed to a supporting substrate. Then, on the wafer, a trench to become a scribing line is formed with a crystal face exposed so as to form a side wall of the trench. On that side wall, an isolation layer for holding a reverse breakdown voltage is formed by ion implantation and low temperature annealing or laser annealing so as to be extended to the top surface side while being in contact with a p collector region as a bottom surface diffused layer. Then, laser dicing is carried out to dice a collector electrode, formed on the p collector region, together with the p collector region. | 07-19-2012 |
| 20120289024 | METHOD FOR FORMING THE SEMICONDUCTOR CELL - A semiconductor cell includes first trenches defining fin type active regions within the semiconductor substrate and adjacent to each other, second trenches disposed at one side and the other side of the first trenches, adjacent to the first trench and including fin type active regions, a first oxide layer formed on each of surfaces of the first trenches, and a second oxide layer formed on each of surfaces of the second trenches and having a thicker thickness than the first oxide layer. Although the critical dimension of the fin is increased, the gate drivability can be improved. | 11-15-2012 |
| 20120302038 | METHOD FOR PREPARING A SHALLOW TRENCH ISOLATION STRUCTURE WITH THE STRESS OF ITS ISOLATION OXIDE BEING TUNED BY ION IMPLANTATION - A method for preparing a shallow trench isolation structure with the stress of its isolation oxide being tuned by ion implantation comprises: step a: forming a protective layer on a semiconductor substrate; step b: forming trenches for isolating PMOS active regions and NMOS active regions on the semiconductor substrate and the protective layer; step c: forming a filling material layer in the trenches, so that the trenches are fully filled with the filling material layer to form shallow trench isolation structures. The advantageous is that, as for a device where a HARP process is applied to its shallow trench isolation, the stress in the STI can be tuned so as to be changed from tensile stress into compressive stress by performing ion implantation to the STI around the PMOS, therefore the stress state of the PMOS channel region may be changed and the performance thereof is improved. | 11-29-2012 |
| 20130095636 | PROCESS FOR PRODUCING AT LEAST ONE DEEP TRENCH ISOLATION - A method for producing at least one deep trench isolation in a semiconductor substrate including silicon and having a front side may include forming at least one cavity in the semiconductor substrate from the front side. The method may include conformally depositing dopant atoms on walls of the cavity, and forming, in the vicinity of the walls of the cavity, a silicon region doped with the dopant atoms. The method may further include filling the cavity with a filler material to form the at least one deep trench isolation. | 04-18-2013 |
| 20140038386 | REDUCING OR ELIMINATING PRE-AMORPHIZATION IN TRANSISTOR MANUFACTURE - A method for fabricating field effect transistors using carbon doped silicon layers to substantially reduce the diffusion of a doped screen layer formed below a substantially undoped channel layer includes forming an in-situ epitaxial carbon doped silicon substrate that is doped to form the screen layer in the carbon doped silicon substrate and forming the substantially undoped silicon layer above the carbon doped silicon substrate. The method may include implanting carbon below the screen layer and forming a thin layer of in-situ epitaxial carbon doped silicon above the screen layer. The screen layer may be formed either in a silicon substrate layer or the carbon doped silicon substrate. | 02-06-2014 |
| 20140120693 | METHOD OF MAKING A SHALLOW TRENCH ISOLATION (STI) STRUCTURES - A method of making shallow trench isolation (STI) structures includes forming a first opening in a substrate and filling the first opening with silicon oxide to form a first STI structure. The method further includes doping a top surface of the silicon oxide with carbon, wherein a bottom portion of the silicon oxide is free of carbon. The method further includes planarizing the silicon oxide so that the top surface of the silicon oxide is at substantially a same level as a surface of the substrate surrounding the silicon oxide. | 05-01-2014 |
| 20140206175 | METHODS OF FORMING SEMICONDUCTOR STRUCTURES INCLUDING BODIES OF SEMICONDUCTOR MATERIAL - Semiconductor structures that include bodies of a semiconductor material spaced apart from an underlying substrate. The bodies may be physically separated from the substrate by at least one of a dielectric material, an open volume and a conductive material. The bodies may be electrically coupled by one or more conductive structures, which may be used as an interconnect structure to electrically couple components of memory devices. By providing isolation between the bodies, the semiconductor structure provides the properties of a conventional SOI substrate (e.g., high speed, low power, increased device density and isolation) while substantially reducing fabrication acts and costs associated with such SOI substrates. Additionally, the semiconductor structures of the present disclosure provide reduced parasitic coupling and current leakage due to the isolation of the bodies by the intervening dielectric material. | 07-24-2014 |
| 20140308799 | TRENCH ISOLATION MOS P-N JUNCTION DIODE DEVICE AND METHOD FOR MANUFACTURING THE SAME - A trench isolation metal-oxide-semiconductor (MOS) P-N junction diode device and a manufacturing method thereof are provided. The trench isolation MOS P-N junction diode device is a combination of an N-channel MOS structure and a lateral P-N junction diode, wherein a polysilicon-filled trench oxide layer is buried in the P-type structure to replace the majority of the P-type structure. As a consequence, the trench isolation MOS P-N junction diode device of the present invention has the benefits of the Schottky diode and the P-N junction diode. That is, the trench isolation MOS P-N junction diode device has rapid switching speed, low forward voltage drop, low reverse leakage current and short reverse recovery time. | 10-16-2014 |
| 20150118822 | METHODS FOR SILICON RECESS STRUCTURES IN A SUBSTRATE BY UTILIZING A DOPING LAYER - Embodiments of the present invention provide a methods for forming silicon recess structures in a substrate with good process control, particularly suitable for manufacturing three dimensional (3D) stacking of fin field effect transistor (FinFET) for semiconductor chips. In one embodiment, a method of forming recess structures in a substrate includes etching a first portion of a substrate defined by a second portion formed in the substrate until a doping layer formed in the substrate is exposed. | 04-30-2015 |
| 20150118823 | METHOD OF STRESSING A SEMICONDUCTOR LAYER - One or more embodiments of the disclosure concerns a method of forming a stressed semiconductor layer involving: forming, in a surface of a semiconductor structure having a semiconductor layer in contact with an insulator layer, at least two first trenches in a first direction; introducing, via the at least two first trenches, a stress in the semiconductor layer and temporally decreasing, by annealing, the viscosity of the insulator layer; and extending the depth of the at least two first trenches to form first isolation trenches in the first direction delimiting a first dimension of at least one transistor to be formed in the semiconductor structure. | 04-30-2015 |
| 20150140781 | SEMICONDUCTOR ISOLATION STRUCTURE AND METHOD OF MANUFACTURE - A method of formation of an isolation structure for vertical semiconductor devices, the resulting isolation structure, and a memory device to prevent leakage among adjacent vertical semiconductor devices are described. | 05-21-2015 |
| 20150303096 | METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE - To provide a semiconductor device and a manufacturing method thereof achieving both reduction in ON resistance and increase in breakdown voltage and suppressing a short circuit. The semiconductor device has, in its semiconductor substrate having a main surface, a p | 10-22-2015 |
| 20160013095 | Uniform Shallow Trench Isolation Regions and the Method of Forming the Same | 01-14-2016 |
| 20160126132 | METHODS FOR FABRICATING INTEGRATED CIRCUITS WITH ISOLATION REGIONS HAVING UNIFORM STEP HEIGHTS - Methods for fabricating integrated circuits are provided. In an embodiment, a method for fabricating an integrated circuit includes providing a semiconductor substrate including an isolation region between a first device region and a second device region. The isolation region includes a first portion adjacent the first device region and a second portion adjacent the second device region. The method includes selectively etching the second portion of the isolation region to a second height. The method forms an insulation layer over the first device region and second device region. The method further includes selectively etching the insulation layer over the first device region and the first portion of the isolation region. The first portion of the isolation region is etched to a first height substantially equal to the second height. | 05-05-2016 |
| 20160163582 | FORMATION OF ISOLATION SURROUNDING WELL IMPLANTATION - Embodiments of present invention provide a method of making well isolations. The method includes forming a hard-mask layer on top of said substrate; forming a first resist-mask on top of a first portion of the hard-mask layer and applying the first resist-mask in forming a first type of wells in a first region of the substrate; forming a second resist-mask on top of a second portion of the hard-mask layer and applying the second resist-mask in forming a second type of wells in a second region of the substrate; applying the first and second resist-masks in transforming the hard-mask layer into a hard-mask, the hard-mask having openings aligned to areas overlapped by the first and second regions of the substrate; etching at least the areas of the substrate in creating deep trenches that separate the first and second types of wells; and filling the deep trenches with insulating materials. | 06-09-2016 |
| 20160181237 | Electrostatic Discharge Protection Structure And Fabrication Method Thereof | 06-23-2016 |
| 438434000 | From doped insulator in groove | 4 |
| 20110027964 | DOPING METHOD FOR SEMICONDUCTOR DEVICE - A doping method for a semiconductor device includes forming a trench in a semiconductor substrate, forming a doped layer doped with a dopant over the undoped layer, and forming a doped region into which the dopant is diffused, wherein the doped region is a portion of the semiconductor substrate in contact with the doped layer. | 02-03-2011 |
| 20110201174 | Configuration of high-voltage semiconductor power device to achieve three dimensional charge coupling - This invention discloses semiconductor device that includes a top region and a bottom region with an intermediate region disposed between said top region and said bottom region with a controllable current path traversing through the intermediate region. The semiconductor device further includes a trench with padded with insulation layer on sidewalls extended from the top region through the intermediate region toward the bottom region wherein the trench includes randomly and substantially uniformly distributed nano-nodules as charge-islands in contact with a drain region below the trench for electrically coupling with the intermediate region for continuously and uniformly distributing a voltage drop through the current path. | 08-18-2011 |
| 20130280883 | METHODS OF FORMING BULK FINFET DEVICES SO AS TO REDUCE PUNCH THROUGH LEAKAGE CURRENTS - Disclosed are methods of forming bulk FinFET semiconductor devices to reduce punch through leakage currents. One example includes forming a plurality of trenches in a semiconducting substrate to define a plurality of spaced-apart fins, forming a doped layer of insulating material in the trenches, wherein an exposed portion of each of the fins extends above an upper surface of the doped layer of insulating material while a covered portion of each of the fins is positioned below the upper surface of the doped layer of insulating material, and performing a process operation to heat at least the doped layer of insulating material to cause a dopant material in the doped layer to migrate from the doped layer of insulating material into the covered portions of the fins and thereby define a doped region in the covered portions of the fins that is positioned under the exposed portions of the fins. | 10-24-2013 |
| 20140134826 | FIELD EFFECT TRANSISTOR DEVICES WITH DOPANT FREE CHANNELS AND BACK GATES - A method of forming a back gate transistor device includes forming an open isolation trench in a substrate; forming sidewall spacers in the open isolation trench; and using the open isolation trench to perform a doping operation so as to define a doped well region below a bottom surface of the isolation trench that serves as a back gate conductor, wherein the sidewall spacers prevent contamination of a channel region of the back gate transistor device by dopants. | 05-15-2014 |
