| Institute of Microelectronics, Chinese Academy of Sciences Patent applications |
| Patent application number | Title | Published |
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| 20120132990 | SEMICONDUCTOR STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - The present application discloses a semiconductor structure and a method for manufacturing the same. A semiconductor structure according to the present invention can adjust the threshold voltage by capacitive coupling between a backgate region either and a source region or a drain region with a common contact, i.e. a source contact or a drain contact, which leads to a simple manufacturing process, a higher integration level, and a lower manufacture cost. Moreover, the asymmetric design of the backgate structure, together with the doping of the backgate region which can be varied as required in an actual device design, can further enhance the effects of adjusting the threshold voltage and improve the performances of the device. | 05-31-2012 |
| 20120126310 | METHOD FOR FORMING CHANNEL MATERIAL - The present invention provides a method for forming a channel material, comprising: forming a substrate; forming an MOS device with a dummy gate stack on the substrate; removing the dummy gate stack; forming a channel trench at the channel located under the dummy gate stack; filling the channel trench with the channel material; and forming a gate stack. According to the embodiments of the present invention, the channel material is formed by a replacement gate process after the high temperature process, such as a high temperature annealing, thereby any negative influence on the formed channel material due to the high temperature process may be effectively avoided. | 05-24-2012 |
| 20120112358 | STACK-TYPE SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME - A stack-type semiconductor device includes a semiconductor substrate; and a plurality of wafer assemblies arranged in various levels on the semiconductor substrate, in which the wafer assembly in each level includes an active part and an interconnect part, and the active part and the interconnect part each have conductive through vias, wherein the conductive through vias in the active part are aligned with the conductive through vias in the interconnect part in a vertical direction, so that the active part in each level is electrically coupled with the active part in the previous level and/or the active part in the next level by the conductive through vias. Such a stack-type semiconductor device and the related methods can be applied in a process after the FEOL or in a semiconductor chip packaging process and provide a 3-dimensional semiconductor device of high integration and high reliability. | 05-10-2012 |
| 20120112288 | ISOLATION STRUCTURE, METHOD FOR MANUFACTURING THE SAME, AND SEMICONDUCTOR DEVICE HAVING THE STRUCTURE - The present invention provides an isolation structure for a semiconductor substrate and a method for manufacturing the same, as well as a semiconductor device having the structure. The present invention relates to the field of semiconductor manufacture. The isolation structure comprises: a trench embedded in a semiconductor substrate; an oxide layer covering the bottom and sidewalls of the trench, and isolation material in the trench and on the oxide layer, wherein a portion of the oxide layer on an upper portion of the sidewalls of the trench comprises lanthanum-rich oxide. By the trench isolation structure according to the present invention, metal lanthanum in the lanthanum-rich oxide can diffuse into corners of the oxide layer of the gate stack, thus alleviating the impact of the narrow channel effect and making the threshold voltage adjustable. | 05-10-2012 |
| 20120112261 | FLASH MEMORY DEVICE AND METHOD FOR MANUFACTURING THE SAME - The present invention provides a FinFET flash memory device and the method for manufacturing the same. The flash memory device is on an insulating layer, comprising: a first fin and a second fin, wherein the second fin is a control gate of the device; a gate dielectric layer, at side walls and top of the first fin and the second fin; source/drain regions, inside the first fin at both sides of a floating gate. | 05-10-2012 |
| 20120112252 | SEMICONDUCTOR STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - The present invention provides a method for manufacturing a semiconductor structure, which lies in covering a first dielectric layer with a second dielectric layer, forming a first contact hole with a small inner diameter within the second dielectric layer first, then etching the first dielectric layer to form a second contact hole with a much great inner diameter, and finally filling a conductive material into the first contact hole and the second contact hole to form contact plugs. Accordingly, the present invention further provides a semiconductor structure favorable for reducing contact resistance. | 05-10-2012 |
| 20120112249 | HIGH PERFORMANCE SEMICONDUCTOR DEVICE AND METHOD OF FABRICATING THE SAME - A method for fabricating a semiconductor device employs the way of first performing thermal annealing to the source/drain regions and then forming an ion-implanted region, such as a retrograde well. The method comprises the steps of: removing said dummy gate so as to expose said dummy gate dielectric layer and form an opening; performing ion implantation on the substrate from the opening to form an ion-implanted region; removing the dummy gate dielectric layer; performing thermal annealing to activate the dopants of the ion-implanted region; and depositing a new gate dielectric layer and a new metal gate in the opening in sequence, wherein the formed new gate dielectric layer covers the substrate and the inner walls of the sidewall spacers. By means of the present invention, it is possible to avoid inappropriately introducing the dopants of the ion-implanted region into the source region and the drain region, such that the profile of the ion-implanted region does not overlap with the dopants of the source/drain regions, thereby avoiding increasing the band-to-band leakage current in a MOSFET device. As a result, the performance of the device is improved. | 05-10-2012 |
| 20120108032 | METHOD FOR FORMING A SEMICONDUCTOR DEVICE WITH STRESSED TRENCH ISOLATION - A method for forming a semiconductor device with stressed trench isolation is provided, comprising: providing a silicon substrate (S | 05-03-2012 |
| 20120104506 | CMOSFET DEVICE WITH CONTROLLED THRESHOLD VOLTAGE CHARACTERISTICS AND METHOD OF FABRICATING THE SAME - There is provided a CMOSFET device with threshold voltage controlled by means of interface dipoles and a method of fabricating the same. A cap layer, for example a very thin layer of poly-silicon, amorphous silicon, or SiO | 05-03-2012 |
| 20120104495 | SEMICONDUCTOR STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - The present application discloses a semiconductor structure and a method for manufacturing the same. The semiconductor structure according to the present invention adjusts a threshold voltage with a common contact, which has a portion outside the source or drain region extending to the back-gate region and provides an electrical contact of the source or drain region and the back-gate region, which leads to a simple manufacturing process, an increased integration level and a lowered manufacture cost. Moreover, the asymmetric design of the back-gate structure further increases the threshold voltage and improves the performance of the device. | 05-03-2012 |
| 20120104466 | METHOD FOR FABRICATING CONTACT ELECTRODE AND SEMICONDUCTOR DEVICE - The invention provides a semiconductor device comprising: a substrate; a gate, which is formed on the substrate; a source and a drain, which are located on opposite sides of the gate, respectively; a contact, which contacts with the source and/or the drain, wherein the contact has an enlarged end at an end which is in contact with the source and/or the drain. In the present invention, since the contact area of the contact is increased on the interface in contact with the source/the drain, the contact resistance can be reduced, and thus the performances of the semiconductor device can be guaranteed/improved. The present invention further provides a method of fabricating the semiconductor device (especially the contact therein) as previously described. | 05-03-2012 |
| 20120097923 | GRAPHENE DEVICE AND METHOD FOR MANUFACTURING THE SAME - The invention provides a graphene device structure and a method for manufacturing the same, the device structure comprising a graphene layer; a gate region in contact with the graphene layer; semiconductor doped regions formed in the two opposite sides of the gate region and in contact with the graphene layer, wherein the semiconductor doped regions are isolated from the gate region; a contact formed on the gate region and contacts formed on the semiconductor doped regions. The on-off ratio of the graphene device is increased through the semiconductor doped regions without increasing the band gap of the graphene material, i.e., without affecting the mobility of the material or the speed of the device, thereby increasing the applicability of the graphene material in CMOS devices. | 04-26-2012 |
| 20120094447 | METHOD FOR INTEGRATION OF DUAL METAL GATES AND DUAL HIGH-K DIELECTRICS IN CMOS DEVICES - The present invention provides a method for integrating the dual metal gates and the dual gate dielectrics into a CMOS device, comprising: growing an ultra-thin interfacial oxide layer or oxynitride layer by rapid thermal oxidation; forming a high-k gate dielectric layer on the ultra-thin interfacial oxide layer by physical vapor deposition; performing a rapid thermal annealing after the deposition of the high-k; depositing a metal nitride gate by physical vapor deposition; doping the metal nitride gate by ion implantation with P-type dopants for a PMOS device, and with N-type dopants for an NMOS device, with a photoresist layer as a mask; depositing a polysilicon layer and a hard mask by a low pressure CVD process, and then performing photolithography process and etching the hard mask; removing the photoresist, and then etching the polysilicon layer/the metal gate/the high-k dielectric layer sequentially to provide a metal gate stack; forming a first spacer, and performing ion implantation with a low energy and a large angle for source/drain extensions; forming a second spacer, and performing ion implantation for source/drain regions; performing a thermal annealing so as to adjust of the metal gate work functions for the NMOS and PMOS devices, respectively, in the course when the dopants in the source/drain regions are activated. | 04-19-2012 |
| 20120083106 | METHOD FOR MANUFACTURING SEMICONDUCTOR STRUCTURE - The present application discloses a method for manufacturing a semiconductor structure, comprising the steps of: a) providing a p-type field effect transistor; b) forming a tensile-stressed layer on the p-type field effect transistor; c) removing a portion of the tensile-stressed layer, so that the remaining portion of the tensile-stressed layer generates compressive stress in the channel of the p-type field effect transistor; and d) performing annealing, so as to achieve the object of memorizing compressive stress in a channel of a transistor and improving the performance of the transistor. The method according to the present invention memorizes the compressive stress in the channel of the transistor by a stress memorization technique, increases mobility of holes, and improves overall performance of the semiconductor structure. | 04-05-2012 |
| 20120080792 | Metal Interconnection Structure and Method For Forming Metal Interlayer Via and Metal Interconnection Line - There is provided a method for forming a metal interlayer via, comprising: forming a seed layer on a first dielectric layer and a first metal layer embedded in the first dielectric layer; forming a mask pattern on the seed layer to expose a portion of the seed layer covering some of the first metal layer; growing a second metal layer on the exposed portion of the seed layer; removing the mask pattern and a portion of the seed layer carrying the mask pattern to expose side walls of the second metal layer, a portion of the first metal layer and the first dielectric layer; forming an insulating barrier layer on the side walls, the portion of the first metal layer and the first dielectric layer. There is also provided a method for forming a metal interconnection line. Both of them can suppress the occurrence of voids. There is further provided a metal interconnection structure comprising a contact plug, a via and a metal interconnection line, wherein the via is formed on the metal interconnection line, the metal gate and/or the contact plug. | 04-05-2012 |
| 20120061738 | Gate Stack Structure, Semiconductor Device and Method for Manufacturing the Same - A gate stack structure comprises an isolation dielectric layer formed on and embedded into a gate. A sidewall spacer covers opposite side faces of the isolation dielectric layer, and the isolation dielectric layer located on an active region is thicker than the isolation dielectric layer located on a connection region. A method for manufacturing the gate stack structure comprises removing part of the gate in thickness, the thickness of the removed part of the gate on the active region is greater than the thickness of the removed part of the gate on the connection region so as to expose opposite inner walls of the sidewall spacer; forming an isolation dielectric layer on the gate to cover the exposed inner walls. There is also provided a semiconductor device and a method for manufacturing the same. The methods can reduce the possibility of short-circuit occurring between the gate and the second contact hole and can be compatible with the dual-contact-hole process. | 03-15-2012 |
| 20120061736 | Transistor and Method for Forming the Same - The present invention relates to a stress-enhanced transistor and a method for forming the same. The method for forming the transistor according to the present invention comprises the steps of forming a mask layer on a semiconductor substrate on which a gate has been formed, so that the mask layer covers the gate and the semiconductor substrate; patterning the mask layer so as to expose at least a portion of each of a source region and a drain region; amorphorizing the exposed portions of the source region and the drain region; removing the mask layer; and annealing the semiconductor substrate so that a dislocation is formed in the exposed portion of each of the source region and the drain region. | 03-15-2012 |
| 20120061735 | SEMICONDUCTOR DEVICE WITH STRESS TRENCH ISOLATION AND METHOD FOR FORMING THE SAME - A semiconductor device with stress trench isolation and a method for forming the same are provided. The method includes: providing a silicon substrate; forming first trenches and second trenches on the silicon substrate, wherein an extension direction of the first trenches is perpendicular to that of the second trenches; forming a first dielectric layer in the first trenches and forming a second dielectric layer in the second trenches; and forming a gate stack on a portion of the silicon substrate surrounded by the first trenches and the second trenches, wherein a channel length direction under the gate stack is parallel to the extension direction of the first trenches, indices of crystal plane of the silicon substrate are {100}, and the extension direction of the first trenches is along the crystal orientation <110>. The embodiments of the present invention can improve response speed and performance of the devices. | 03-15-2012 |
| 20120056323 | SEMICONDUCTOR STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - The application discloses a semiconductor structure and a method for manufacturing the same. The semiconductor structure comprises: a semiconductor substrate comprising a first surface and a second surface opposite to each other; and a silicon via formed through the semiconductor substrate, wherein the silicon via comprises a first via formed through the first surface; and a second via formed through the second surface and electrically connected with the first via, wherein the first and second vias are formed individually. Embodiments of the invention are applicable to the manufacture of a 3D integrated circuit. | 03-08-2012 |
| 20120056267 | HYBRID CHANNEL SEMICONDUCTOR DEVICE AND METHOD FOR FORMING THE SAME - A hybrid channel semiconductor device and a method for forming the same are provided. The method includes: providing a first semiconductor layer, the first semiconductor layer including an NMOS area and a PMOS area, a surface of the first semiconductor layer being covered by a second semiconductor layer, wherein electrons have higher mobility than holes in one of the first semiconductor layer and the second semiconductor layer, and holes have higher mobility than electrons in the other; forming a first dummy gate structure, and a first source region and a first drain region on respective sides of the first dummy gate structure on the second semiconductor layer in the NMOS area, forming a second dummy gate structure, and a second source region and a second drain region on respective sides of the second dummy gate structure on the second semiconductor layer in the PMOS area; forming an interlayer dielectric layer on the second semiconductor layer and performing planarization; removing the first dummy gate structure and the second dummy gate structure to form a first opening and a second opening; and forming a first gate structure on the one of the first semiconductor layer and the second semiconductor layer in which electrons have higher mobility in the first opening, and forming a second gate structure on the other semiconductor layer in the second opening. The invention can reduce defects in the channel region. | 03-08-2012 |
| 20120043593 | Semiconductor Device Structure and Method for Manufacturing the same - The present invention presents a method for manufacturing a semiconductor device structure as well as the semiconductor device structure. Said method comprises: providing a semiconductor substrate; forming a first insulating layer on the semiconductor substrate; forming a shallow trench isolation embedded in the first insulating layer and the semiconductor substrate; forming a channel region embedded in the semiconductor substrate; and forming a gate stack stripe on the channel region. Said method further comprises, before forming the channel region, performing a source/drain implantation on the semiconductor substrate. By means of forming the source/drain regions in a self-aligned manner before forming the channel region and the gate stack, said method achieves the advantageous effects of the replacement gate process without using a dummy gate, thereby simplifying the process and reducing the cost. | 02-23-2012 |
| 20120043592 | SEMICONDUCTOR DEVICE AND METHOD FOR FORMING THE SAME - The present invention provides a semiconductor device. The semiconductor device comprises contact plugs that comprise a first contact plug formed by a first barrier layer arranged on the source and drain regions and a tungsten layer arranged on the first barrier layer; and second contact plugs comprising a second barrier layer arranged on both of the metal gate and the first contact plug and a conductive layer arranged on the second barrier layer. The conductivity of the conductive layer is higher than that of the tungsten layer. A method for forming the semiconductor device is also provided. The present invention provides the advantage of enhancing the reliability of the device when using the copper contact technique. | 02-23-2012 |
| 20120038006 | SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME - The present application discloses a semiconductor device comprising a fin of semiconductive material formed from a semiconductor layer over a semiconductor substrate and having two opposing sides perpendicular to the main surface of the semiconductor substrate; a source region and a drain region provided in the semiconductor substrate adjacent to two ends of the fin and being bridged by the fin; a channel region provided at the central portion of the fin; and a stack of gate dielectric and gate conductor provided at one side of the fin, where the gate conductor is isolated from the channel region by the gate dielectric, and wherein the stack of gate dielectric and gate conductor extends away from the one side of the fin in a direction parallel to the main surface of the semiconductor substrate, and insulated from the semiconductor substrate by an insulating layer. The semiconductor device has an improved short channel effect and a reduced parasitic capacitance and resistance, which contributes to an improved electrical property and facilitates scaling down of the transistor. | 02-16-2012 |
| 20120025317 | SEMICONDUCTOR DEVICE STRUCTURE AND METHOD FOR FABRICATING THE SAME - A semiconductor device structure and a method for fabricating the same. A method for fabricating semiconductor device structure includes forming gate lines on a semiconductor substrate; forming gate sidewall spacers surrounding the gate lines; forming respective source/drain regions in the semiconductor substrate and on either side of the respective gate lines; forming conductive sidewall spacers surrounding the gate sidewall spacers; and cutting off the gate lines, the gate sidewall spacers and the conductive sidewall spacers at predetermined positions, in which the cut gate lines are electrically isolated gates, and the cut conductive sidewall spacers are electrically isolated lower contacts. The method is applicable to the manufacture of contacts in integrated circuits. | 02-02-2012 |
| 20120021596 | METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE - The present invention relates to the field of semiconductor manufacturing. The present invention provides a method of manufacturing a semiconductor device, which comprises: providing a semiconductor substrate; forming an interface layer, a gate dielectric layer and a gate electrode on the substrate; forming a metal oxygen absorption layer on the gate electrode; performing a thermal annealing process on the semiconductor device so that the metal oxygen absorption layer absorbs oxygen in the interface layer and the thickness of the interface layer is reduced. By means of the present invention, the thickness of the interface layer can be reduced on one hand, and on the other hand the metal in the metal oxygen absorption layer is made to diffuse into the gate electrode and/or the gate dielectric layer through the annealing process, which further achieves the effects of adjusting the effective work function and controlling the threshold voltage. | 01-26-2012 |
| 20120021584 | SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME - The present invention provides a semiconductor device and a method for manufacturing the same. The method includes: providing a substrate; forming a gate stack on the substrate; forming an inter layer dielectric (ILD) to cover the device; etching the ILD at both sides of the gate stack and the substrate below the ILD, so as to form a groove of source and drain regions respectively; depositing a metal diffusion barrier layer in the groove; and filling the groove with a metal to form the source and drain regions. The semiconductor device includes: a substrate; a gate stack on the substrate; an inter layer dielectric (ILD) covering the device; a groove of source and drain regions formed in the ILD at both sides of the gate stack and the substrate below the ILD; and a metal diffusion barrier layer and a metal filler formed in the groove. According to the present invention, the S/D parasitic resistance in the MOS device is reduced, the S/D stress on the channel is increased, the process temperature is lowered, and the process compatibility between the high k gate dielectric layer and the metal gate is improved. | 01-26-2012 |
| 20120018791 | FLASH MEMORY DEVICE AND MANUFACTURING METHOD OF THE SAME - A flash memory device includes a semiconductor substrate, a gate stack formed on the semiconductor substrate; a channel region below the gate stack; spacers outside the gate stack; and source/drain regions outside the channel region and in the semiconductor substrate, in which the gate stack includes a first gate dielectric layer on the channel region; a first conductive layer covering an upper surface of the first gate dielectric layer and inner walls of the spacers; a second gate dielectric layer covering a surface of the first conductive layer; and a second conductive layer covering a surface of the second gate dielectric layer. A method for manufacturing a flash memory device disclosed herein. | 01-26-2012 |
| 20120018739 | BODY CONTACT DEVICE STRUCTURE AND METHOD OF MANUFACTURE - The present invention provides a body contact device structure and a method for manufacturing the same. According to the present invention, an opening is formed by removing one end of a dummy gate stack after forming the dummy gate stack, wherein a residual portion of the dummy gate stack is a body stack comprising a body pile-up layer that directly contacts a substrate. Next, a replacement gate stack is formed in the opening, and then a body contact is formed on the body pile-up layer in the body stack. The body contact device structure formed by the method of the present invention effectively reduces the parasitic effects and the device area, and improves the performance of the device structure. | 01-26-2012 |
| 20120001229 | Semiconductor Device and Method for Forming the Same - A semiconductor device comprises a semiconductor substrate on an insulating layer; and a second gate, the second gate is located on the insulating layer and is embedded at least partially in the semiconductor substrate. A method for forming a semiconductor device comprises: forming a semiconductor substrate on an insulating layer; forming a void within the semiconductor substrate, with the insulating layer being exposed by the void; and forming a second gate, with the void being filled with at least one part of the second gate. It facilitates the reduction of the short channel effects, resistances of source and drain regions, and parasitic capacitances. | 01-05-2012 |
| 20110316088 | SEMICONDUCTOR STRUCTURE AND METHOD FOR FORMING THE SAME - A semiconductor structure and a method for forming the same are provided. The structure comprises a semiconductor substrate ( | 12-29-2011 |
| 20110316080 | FIN TRANSISTOR STRUCTURE AND METHOD OF FABRICATING THE SAME - There is provided a fin transistor structure and a method of fabricating the same. The fin transistor structure comprises a fin formed on a semiconductor substrate, wherein an insulation material is formed between a portion of the fin serving as the channel region of the transistor structure and the substrate, and a bulk semiconductor material is formed between remaining portions of the fin and the substrate. Thereby, it is possible to reduce the current leakage while maintaining the advantages such as low cost and high heat transfer. | 12-29-2011 |
| 20110298053 | MANUFACTURING METHOD OF GATE STACK AND SEMICONDUCTOR DEVICE - A manufacturing method of a gate stack with sacrificial oxygen-scavenging metal spacers includes: forming a gate stack structure consisting of an interfacial oxide layer, a high-K dielectric layer and a metal gate electrode, on a semiconductor substrate; conformally depositing a metal layer covering the semiconductor substrate and the gate stack structure; and selectively etching the metal layer to remove the portions of the metal layer covering the top surface of the gate stack structure and the semiconductor substrate, so as to only keep the sacrificial oxygen-scavenging metal spacers surrounding the gate stack structure in the outer periphery of the gate stack structure. A semiconductor device manufactured by this process. | 12-08-2011 |
| 20110298050 | FIN TRANSISTOR STRUCTURE AND METHOD OF FABRICATING THE SAME - There is provided a fin transistor structure and a method of fabricating the same. The fin transistor structure comprises a fin formed on a semiconductor substrate, wherein a bulk semiconductor material is formed between a portion of the fin serving as the channel region of the transistor structure and the substrate, and an insulation material is formed between remaining portions of the fin and the substrate. Thereby, it is possible to reduce the current leakage while maintaining the advantages of body-tied structures. | 12-08-2011 |
| 20110298018 | TRANSISTOR AND MANUFACTURING METHOD OF THE SAME - The invention provides a transistor, including: a substrate having a channel region; a source region and a drain region on two ends of the channel region of the substrate respectively; a gate high-K dielectric layer on a top surface of the substrate above the channel region between the source region and the drain region; an interfacial layer under the gate high-K dielectric layer, including a first portion near the source region and a second portion near the drain region, wherein an equivalent oxide thickness of the first portion is larger than that of the second portion. An asymmetric replacement metal gate forms an asymmetric interfacial layer, which is thin at the drain region side and thick at the source region side. At the thin drain region side, the short channel effect is significant and the asymmetric interfacial layer advantageously suppresses the short channel effect. At the thick source region side, the carrier mobility has a large influence on the device, and the asymmetric interfacial layer prevents the carrier mobility from decreasing. Further, the asymmetric replacement metal gate implements an asymmetric metal work function. | 12-08-2011 |
| 20110291184 | SEMICONDUCTOR STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - The present application discloses a semiconductor structure and a method for manufacturing the same. The semiconductor structure comprises a semiconductor substrate; an epitaxial semiconductor layer formed on two side portions of the semiconductor substrate; a gate stack formed at a central position on the semiconductor substrate and abutting the epitaxial semiconductor layer, the gate comprising a gate conductor layer and a gate dielectric layer which is sandwiched between the gate conductor layer and the semiconductor substrate and surrounding the lateral surfaces of the gate conductor layer; and a sidewall spacer formed on the epitaxial semiconductor layer and surrounding the gate. The method for manufacturing the above semiconductor structure comprises forming raised source/drain regions in the epitaxial semiconductor layer utilizing the sacrificial gate. The semiconductor structure and the method for manufacturing the same can simplify the fabrication process for an ultra-thin SOI transistor and reduce the ON-state resistance and power consumption of the transistor. | 12-01-2011 |
| 20110284992 | 3D INTEGRATED CIRCUIT AND METHOD OF MANUFACTURING THE SAME - The present invention provides a 3D integrated circuit and a manufacturing method thereof. The circuit structure comprises: a semiconductor substrate; at least one semiconductor device formed on the upper surface of the semiconductor substrate; a through-Si-via through the semiconductor substrate and comprising an insulating layer covering sidewalls of the through-Si-via and conductive material filled in the insulating layer; an interconnection structure connecting the at least one semiconductor device and the through-Si-via; and a diffusion trapping region formed on the lower surface of the semiconductor substrate. The present invention is applicable in manufacture of the 3D integrated circuit. | 11-24-2011 |
| 20110284934 | SEMICONDUCTOR DEVICE AND METHOD OF FABRICATING THE SAME - There are provided a semiconductor device and a method of fabricating the same. The semiconductor device comprises: a semiconductor substrate of a first conductive type; a gate formed on the semiconductor substrate; and a heavily doped region of the first conductive type and a heavily doped region of a second conductive type formed respectively in the semiconductor substrate at either side of the gate, wherein the heavily doped region of the second conductive type is separated from the channel region under the gate and partially separated from the semiconductor substrate by a dielectric layer. By means of this semiconductor device, it is possible to provide excellent switching behavior. | 11-24-2011 |
| 20110260258 | FIELD EFFECT TRANSISTOR DEVICE WITH IMPROVED CARRIER MOBILITY AND METHOD OF MANUFACTURING THE SAME - The devices are manufactured by replacement gate process and replacement sidewall spacer process, and both tensile stress in the channel region of NMOS device and compressive stress in the channel region of PMOS device are increased by forming a first stress layer with compressive stress in the space within the first metal gate layer of NMOS and a second stress layer with tensile stress in the space within the second metal gate layer of PMOS, respectively. After formation of the stress layers, sidewall spacers of the gate stacks of PMOS and NMOS devices are removed so as to release stress in the channel regions. In particular, stress structure with opposite stress may be formed on sidewalls of the gate stacks of the NMOS device and PMOS device and on a portion of the source region and the drain region, in order to further increase both tensile stress of the NMOS device and compressive stress of the PMOS device. | 10-27-2011 |
| 20110260255 | SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME - The present invention relates to a method of manufacturing a semiconductor device. After depositing the metal gate electrode material, a layer of oxygen molecule catalyzing layer having a catalyzing function to the oxygen molecules is deposited, and afterwards, a low-temperature PMA annealing process is used to decompose the oxygen molecules in the annealing atmosphere into more active oxygen atoms. These oxygen atoms are diffused into the high-k gate dielectric film through the metal gate to supplement the oxygen vacancies in the high-k film, in order to alleviate oxygen vacancies in the high-k film and improve the quality of the high-k film. According to the present invention, the oxygen vacancies and defects of high-k gate dielectric film will be alleviated, and further, growth of SiO | 10-27-2011 |
| 20110260231 | MEMORY DEVICE AND METHOD FOR MANUFACTURING THE SAME - The present application discloses a memory device and a method for manufacturing the same. The memory device comprising an MOSFET formed in a semiconductor layer and a capacitor structure below the MOSFET, wherein the capacitor structure comprises two capacitor electrodes, and one of a source region and a drain region of the MOSFET is electrically connected to one of the two capacitor electrodes, wherein the capacitor structure comprises a plurality of first sub-capacitors and a plurality of second sub-capacitors which are stacked in an alternate manner, each of the plurality of the first sub-capacitors and the plurality of the second sub-capacitors comprises a top capacitor plate, a bottom capacitor plate and a dielectric layer sandwiched therebetween, and the plurality of the first sub-capacitors and the plurality of the second sub-capacitors are connected in parallel with the two capacitor electrodes, and wherein each of the first sub-capacitors has a bottom capacitor plate which is formed from a common first electrode layer with a top capacitor plate of an underlying second sub-capacitor, and each of the second sub-capacitors has a bottom capacitor plate which is formed from a common second electrode layer with a top capacitor plate of an underlying first sub-capacitor, and wherein the first electrode layer and the second electrode layer are made of different conductive materials. | 10-27-2011 |
| 20110260214 | SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME - The present invention discloses a semiconductor device and a method for manufacturing the same, and relates to the field of semiconductor manufacturing. According to the present invention, the semiconductor device comprises: a semiconductor substrate; a gate region located above the semiconductor substrate; S/D regions located at both sides of the gate region and made of a stress material; wherein a concentrated stress region is formed between the gate region and the semiconductor substrate, and the concentrated stress region comprises an upper SOI layer adjacent to the gate region above, and a lower stress release layer adjacent to the semiconductor substrate below. The present invention applies to the manufacturing of a MOSFET. | 10-27-2011 |
| 20110256704 | METHOD FOR MANUFACTURING A METAL GATE ELECTRODE/HIGH K DIELECTRIC GATE STACK - A method of manufacturing a metal gate/high K dielectric gate stack includes the steps of: forming an interfacial layer of SiON or SiO | 10-20-2011 |
| 20110256683 | METHOD OF MANUFACTURING A HIGH-PERFORMANCE SEMICONDUCTOR DEVICE - The present invention relates to a method of manufacturing a semiconductor device, wherein the method comprises: providing a substrate; forming a source region, a drain region, a dummy gate structure, and a gate dielectric layer on the substrate, wherein the dummy gate structure is between the source region and the drain region on the substrate, and the gate dielectric layer is between the substrate and the dummy gate structure; annealing the source region and the drain region; removing the dummy gate structure to form an opening; implanting dopants into the substrate from the opening to form a steep retrograded well; annealing to activate the dopants; and forming a metal gate on the gate dielectric layer by deposition. | 10-20-2011 |
| 20110254093 | SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME - A semiconductor device and a method of manufacturing the same are provided. A multi-component high-k interface layer containing elements of the substrate is formed from a ultra-thin high-k dielectric material in a single-layer structure of atoms by rapid annealing in the manufacturing of a CMOS transistor by the replacement gate process, and a high-k gate dielectric layer with a higher dielectric constant and a metal gate layer are formed thereon. The EOT of the device is effectively decreased, and the diffusion of atoms in the high-k gate dielectric layer from an upper level thereof is effectively prevented by the optimized high-k interface layer at high-temperature treatment. Thus, the present invention may also avoid the growth of the interface layers and the degradation of carrier mobility. Furthermore, the present invention may further alleviate the problem of high interface state and interface roughness caused by direct contact of the high-k gate dielectric layer with high dielectric constant and the substrate, and thus the overall performance of the device is effectively enhanced. | 10-20-2011 |
| 20110254063 | SEMICONDUCTOR DEVICE STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - The present invention provides a MOS device, which comprises: a substrate; an interface layer thin film formed on the substrate; a high k gate dielectric layer formed on the interface layer thin film; and a metal gate formed on the high k gate dielectric layer. The metal gate comprises, upwardly in order, a metal gate work function layer, an oxygen absorption element barrier layer, a metal gate oxygen absorbing layer, a metal gate barrier layer and a polysilicon layer. A metal gate oxygen absorbing layer is introduced into the metal gate for the purpose of preventing the outside oxygen from coming into the interface layer and absorbing the oxygen in the interface layer during a annealing process, such that the interface layer is reduced to be thinner and the EOT of MOS devices are effectively reduced; meanwhile, by adding an oxygen absorption element barrier layer, the “oxygen absorption element” is prevented from diffusing into the high k gate dielectric layer and giving rise to unfavorable impact thereon; in this way, the high k/metal gate system can be more easily integrated, and the performance of the device can be further improved accordingly. | 10-20-2011 |
| 20110248360 | HIGH-SPEED TRANSISTOR STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to a high-speed transistor device and a method for fabricating the same. A high-speed transistor device is proposed, comprising: a silicon substrate; and a gate stack formed on the silicon substrate. The gate stack comprises a gate dielectric stack and a gate electrode layer, and the gate dielectric stack comprises at least a SrTiO | 10-13-2011 |
| 20110248358 | HIGH-PERFORMANCE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME - A method of manufacturing a semiconductor device, wherein thermal annealing of the source/drain regions is performed before reverse Halo implantation to form a reverse Halo implantation region. The method comprises: removing the dummy gate to expose the gate dielectric layer, so as to form an opening; performing reverse Halo implantation on the substrate via the opening, so as to form a reverse Halo implantation region in the channel of the device; activating the dopants in the reverse Halo implantation region by annealing; and performing subsequent device processing. Deterioration of the gate stack due to the reverse Halo ions implantation may be avoided by the present invention, such that the reverse Halo ions implantation may be applied to the device with a metal gate stack, and the short channel effects may be alleviated and controlled, thereby the performance of the device is enhanced. | 10-13-2011 |
| 20110248282 | SEMICONDUCTOR STRUCTURE AND MANUFACTURING METHOD OF THE SAME - The invention provides a semiconductor structure and a manufacturing method of the same, and relates to a field of semiconductor manufacture. The semiconductor structure comprises: a silicon substrate; a large bandgap semiconductor layer formed on the silicon substrates; and a silicon layer formed on the large bandgap semiconductor layer. The method comprises: growing a large bandgap semiconductor layer on a silicon substrate; and growing a silicon layer on the large bandgap semiconductor layer. The embodiments of the present invention can be applied to manufacture of semiconductor devices. | 10-13-2011 |
| 20110227163 | SEMICONDUCTOR DEVICE - The present invention relates to a semiconductor device. Interface layers of different thickness or different materials are used in the NMOS region and the PMOS region of the semiconductor substrate, which not only effectively reduce EOT of the device, especially EOT of the PMOS device, but also increase the electron mobility of the device, especially the electron mobility of the NMOS device, thereby effectively improving the overall performance of the device. | 09-22-2011 |
| 20110227160 | Semiconductor Device and Method of Manufacturing the Same - A semiconductor device and a method of manufacturing the same are provided. The semiconductor device has a metal sidewall spacer on the sidewall of a gate electrode on the drain region side. The metal sidewall spacer is made of such metals as Ta, which has an oxygen scavenging effect and can effectively reduce EOT on the drain region side, and thus the ability to control the short channel is effectively increased. In addition, since EOT on the source region side is larger, the carrier mobility of the device will not be degraded. Moreover, such asymmetric device may have a better driving performance. | 09-22-2011 |
| 20110227158 | 3D INTEGRATED CIRCUIT STRUCTURE, SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SAME - The present invention discloses a semiconductor device. In one embodiment, the semiconductor device comprises a substrate, a diffusion stop layer formed on the substrate, an SOI layer formed on the diffusion stop layer, an MOSFET transistor formed on the SOI layer, and a TSV formed in a manner of penetrating through the substrate, the diffusion stop layer, the SOI layer, and a layer where the MOSFET transistor is located; and an interconnect structure connecting the MOSFET transistor and the TSV. | 09-22-2011 |
| 20110198676 | FIN TRANSISTOR STRUCTURE AND METHOD OF FABRICATING THE SAME - A fin transistor structure and a method of fabricating the same are disclosed. In one aspect the method comprises providing a bulk semiconductor substrate, patterning the semiconductor substrate to form a fin with it body directly tied to the semiconductor substrate, patterning the fin so that gaps are formed on the bottom of the fin at source/drain regions of the transistor structure to be formed. This is performed wherein a portion of the fin corresponding to the channel region of the transistor structure to be formed is directly tied to t he semiconductor substrate, while other portions of the fin at the source/drain regions are separated from the surface of the semiconductor substrate by the gaps. Also, filling an insulation material into the gaps, and fabricating the transistor structure based on the semiconductor substrate with the fin formed thereon are disclosed. Thereby, it is possible to reduce the leakage current while maintaining the advantages of body-tied structures. | 08-18-2011 |
| 20110159656 | METHOD FOR MANUFACTURING A MOSFET WITH A SURROUNDING GATE OF BULK SI - A method for manufacturing a bulk Si nanometer surrounding-gate MOSFET based on a quasi-planar process, including: local oxidation isolation or shallow trench isolation; depositing buffer SiO | 06-30-2011 |
