Patents by Inventor Shaoping Tang
Shaoping Tang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240072756Abstract: A BAW resonator includes first and second electrodes located over a substrate. A piezoelectric layer is located between the first and second electrodes. A guard ring is located between the piezoelectric layer and the second electrode, and is spaced apart from a perimeter of the electrode. The guard ring has a width in a range from 2.5 ?m to 3.5 ?m.Type: ApplicationFiled: August 31, 2022Publication date: February 29, 2024Inventors: Shaoping TANG, Keegan MARTIN, Ting-Ta YEN
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Publication number: 20210222337Abstract: The present application provides a three-axis linkage embroidery machine frame and an embroidery machine. The three-axis linkage embroidery machine frame includes a supporting frame, an X-axis driving mechanism, a Y-axis driving mechanism and a Z-axis driving mechanism. The X-axis driving mechanism is arranged on the supporting frame, the Y-axis driving mechanism is respectively coupled with the X-axis driving mechanism and the Z-axis driving mechanism. The advantageous effect of the present application is that, through the linkage of the X-axis driving mechanism, the Y-axis driving mechanism and the Z-axis driving mechanism, not only can the embroidery product be driven to move in the directions of the X-axis and the Y-axis, but also the embroidery product can be driven to rotate 360°, so that it is possible to avoid that the embroidery direction is the same as the thread taking direction of the rotating shuttle when embroidering.Type: ApplicationFiled: September 13, 2020Publication date: July 22, 2021Inventors: Xuesheng Chen, Shaoping Tang, Yehui Zhang
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Patent number: 9773793Abstract: A transistor structure with stress enhancement geometry aligned above the channel region. Also, a transistor structure with stress enhancement geometries located above and aligned with opposite sides of the channel region. Furthermore, methods for fabricating integrated circuits containing transistors with stress enhancement geometries.Type: GrantFiled: October 9, 2009Date of Patent: September 26, 2017Assignee: TEXAS INSTUMENTS INCORPORATEDInventors: Scott R. Summerfelt, Rajni J. Aggarwal, Shaoping Tang
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Patent number: 9608109Abstract: An n-channel DEMOS device a pwell finger defining a length and a width direction formed within a doped surface layer. A first nwell is on one side of the pwell finger including a source and a second nwell on an opposite side of the pwell finger includes a drain. A gate stack is over a channel region the pwell finger between the source and drain. A field dielectric layer is on the surface layer defining a first active area including a first active area boundary along the width direction (WD boundary) that has the channel region therein. A first p-type layer is outside the first active area at least a first minimum distance from the WD boundary and a second p-type layer is doped less and is closer to the WD boundary than the first minimum distance.Type: GrantFiled: April 21, 2016Date of Patent: March 28, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Chin-Yu Tsai, Imran Khan, Shaoping Tang
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Patent number: 9577094Abstract: An integrated circuit and method includes a DEMOS transistor with improved CHC reliability that has a lower resistance surface channel under the DEMOS gate that transitions to a lower resistance subsurface channel under the drain edge of the DEMOS transistor gate.Type: GrantFiled: October 16, 2015Date of Patent: February 21, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Shaoping Tang, Amitava Chatterjee, Imran Mahmood Khan, Kaiping Liu
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Publication number: 20160035890Abstract: An integrated circuit and method includes a DEMOS transistor with improved CHC reliability that has a lower resistance surface channel under the DEMOS gate that transitions to a lower resistance subsurface channel under the drain edge of the DEMOS transistor gate.Type: ApplicationFiled: October 16, 2015Publication date: February 4, 2016Inventors: Shaoping TANG, Amitava CHATTERJEE, Imran Mahmood KHAN, Kaiping LIU
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Patent number: 9202912Abstract: An integrated circuit and method includes a DEMOS transistor with improved CHC reliability that has a lower resistance surface channel under the DEMOS gate that transitions to a lower resistance subsurface channel under the drain edge of the DEMOS transistor gate.Type: GrantFiled: December 19, 2014Date of Patent: December 1, 2015Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Shaoping Tang, Amitava Chatterjee, Imran Mahmood Khan, Kaiping Liu
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Publication number: 20150187938Abstract: An integrated circuit and method includes a DEMOS transistor with improved CHC reliability that has a lower resistance surface channel under the DEMOS gate that transitions to a lower resistance subsurface channel under the drain edge of the DEMOS transistor gate.Type: ApplicationFiled: December 19, 2014Publication date: July 2, 2015Inventors: Shaoping TANG, Amitava CHATTERJEE, Imran Mahmood KHAN, Kaiping LIU
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Patent number: 8530298Abstract: A method of forming an integrated circuit (IC) includes providing a substrate having a topside semiconductor surface, wherein the topside semiconductor surface includes at least one of N+ buried layer regions and P+ buried layer regions. An epitaxial layer is grown on the topside semiconductor surface. Pwells are formed in the epitaxial layer. Nwells are formed in the epitaxial layer. NMOS devices are formed in and over the pwells, and PMOS devices are formed in and over the nwells.Type: GrantFiled: November 1, 2011Date of Patent: September 10, 2013Assignee: Texas Instruments IncorporatedInventors: Richard G. Roybal, Shariq Arshad, Shaoping Tang, James Fred Salzman
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Publication number: 20130105904Abstract: A method of forming an integrated circuit (IC) includes providing a substrate having a topside semiconductor surface, wherein the topside semiconductor surface includes at least one of N+ buried layer regions and P+ buried layer regions. An epitaxial layer is grown on the topside semiconductor surface. Pwells are formed in the epitaxial layer. Nwells are formed in the epitaxial layer. NMOS devices are formed in and over the pwells, and PMOS devices are formed in and over the nwells.Type: ApplicationFiled: November 1, 2011Publication date: May 2, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: RICHARD G. ROYBAL, SHARIQ ARSHAD, SHAOPING TANG, JAMES FRED SALZMAN
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Publication number: 20110084323Abstract: A transistor structure with stress enhancement geometry aligned above the channel region. Also, a transistor structure with stress enhancement geometries located above and aligned with opposite sides of the channel region. Furthermore, methods for fabricating integrated circuits containing transistors with stress enhancement geometries.Type: ApplicationFiled: October 9, 2009Publication date: April 14, 2011Applicant: Texas Instruments IncorporatedInventors: Scott R. Summerfelt, Rajni J. Aggarwal, Shaoping Tang
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Patent number: 7795085Abstract: Methods are disclosed for forming an SRAM cell having symmetrically implanted active regions and reduced cross-diffusion therein. One method comprises patterning a resist layer overlying a semiconductor substrate to form resist structures about symmetrically located on opposite sides of active regions of the cell, implanting one or more dopant species using a first implant using the resist structures as an implant mask, rotating the semiconductor substrate relative to the first implant by about 180 degrees, and implanting one or more dopant species into the semiconductor substrate with a second implant using the resist structures as an implant mask. A method of performing a symmetric angle implant is also disclosed to provide reduced cross-diffusion within the cell, comprising patterning equally spaced resist structures on opposite sides of the active regions of the cell to equally shadow laterally opposed first and second angled implants.Type: GrantFiled: June 12, 2006Date of Patent: September 14, 2010
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Patent number: 7736983Abstract: Pipe defects in n-type lightly doped drain (NLDD) regions and n-type source/drain (NDS) regions are associated with arsenic implants, while excess diffusion in NLDD and NSD regions is mainly due to phosphorus interstitial movement. Carbon implantation is commonly used to reduce phosphorus diffusion in the NLDD, but contributes to gated diode leakage (GDL). In high threshold NMOS transistors GDL is commonly a dominant off-state leakage mechanism. This invention provides a method of forming an NMOS transistor in which no carbon is implanted into the NLDD, and the NSD is formed by a pre-amorphizing implant (PAI), a phosphorus implant and a carbon species implant. Use of carbon in the NDS allows a higher concentration of phosphorus, resulting in reduced series resistance and reduced pipe defects. An NMOS transistor with less than 1·1014 cm?2 arsenic in the NSD and a high threshold NMOS transistor formed with the inventive method are also disclosed.Type: GrantFiled: January 10, 2008Date of Patent: June 15, 2010Assignee: Texas Instruments IncorporatedInventors: Puneet Kohli, Manoj Mehrotra, Shaoping Tang
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Patent number: 7691700Abstract: One aspect of the inventors' concept relates to a method of forming a semiconductor device. In this method, a gate structure is formed over a semiconductor body. A source/drain mask is patterned over the semiconductor body implanted source and drain regions are formed that are associated with the gate structure. After forming the implanted source and drain regions, a multi-stage implant is performed on the source and drain regions that comprises at least two implants where the dose and energy of the first implant varies from the dose and energy of the second implant. Other methods and devices are also disclosed.Type: GrantFiled: June 27, 2007Date of Patent: April 6, 2010Assignee: Texas Instruments IncorporatedInventors: Manoj Mehrotra, Stan Ashburn, Shaoping Tang
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Patent number: 7662690Abstract: Multiple blanket implantations of one or more p type dopants into a semiconductor substrate are performed to facilitate isolation between nwell regions subsequently formed in the substrate. The blanket implantations are performed through isolation regions in the substrate so that the p type dopants are implanted to depths sufficient to separate the nwell regions. This increased concentration of p type dopants helps to mitigate leakage between the nwell regions as the nwell regions are brought closer together to increase packing densities.Type: GrantFiled: January 31, 2006Date of Patent: February 16, 2010Assignee: Texas Instruments IncorporatedInventors: Shaoping Tang, Zhiqiang Wu
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Patent number: 7601575Abstract: The present invention facilitates semiconductor device operation and fabrication by providing a cap-annealing process that improves channel electron mobility without substantially degrading PMOS transistor devices. The process uses an oxide/nitride composite cap to alter the active dopant profile across the channel regions. During an annealing process, dopants migrate out of the Si/SiO2 in a channel region thereby altering the dopant profile of the channel region. This altered profile generally improves channel mobility thereby improving transistor performance and permitting smaller density designs.Type: GrantFiled: March 4, 2005Date of Patent: October 13, 2009Assignee: Texas Instruments IncorporatedInventors: Haowen Bu, Shashank Ekbote, Rajesh Khamankar, Shaoping Tang, Freidoon Mehrad
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Publication number: 20090179280Abstract: Pipe defects in n-type lightly doped drain (NLDD) regions and n-type source/drain (NDS) regions are associated with arsenic implants, while excess diffusion in NLDD and NSD regions is mainly due to phosphorus interstitial movement. Carbon implanatation is commonly used to reduce phosphorus diffusion in the NLDD, but contributes to gated diode leakage (GDL). In high threshold NMOS transistors GDL is commonly a dominant off-state leakage mechanism. This invention provides a method of forming an NMOS transistor in which no carbon is implanted into the NLDD, and the NSD is formed by a pre-amorphizing implant (PAI), a phosphorus implant and a carbon species implant. Use of carbon in the NDS allows a higher concentration of phosphorus, resulting in reduced series resistance and reduced pipe defects.Type: ApplicationFiled: January 10, 2008Publication date: July 16, 2009Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Puneet Kohli, Manoj Mehrotra, Shaoping Tang
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Publication number: 20090004803Abstract: One aspect of the inventors' concept relates to a method of forming a semiconductor device. In this method, a gate structure is formed over a semiconductor body. A source/drain mask is patterned over the semiconductor body implanted source and drain regions are formed that are associated with the gate structure. After forming the implanted source and drain regions, a multi-stage implant is performed on the source and drain regions that comprises at least two implants where the dose and energy of the first implant varies from the dose and energy of the second implant. Other methods and devices are also disclosed.Type: ApplicationFiled: June 27, 2007Publication date: January 1, 2009Inventors: Manoj Mehrotra, Stan Ashburn, Shaoping Tang
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Publication number: 20070176263Abstract: Multiple blanket implantations of one or more p type dopants into a semiconductor substrate are performed to facilitate isolation between nwell regions subsequently formed in the substrate. The blanket implantations are performed through isolation regions in the substrate so that the p type dopants are implanted to depths sufficient to separate the nwell regions. This increased concentration of p type dopants helps to mitigate leakage between the nwell regions as the nwell regions are brought closer together to increase packing densities.Type: ApplicationFiled: January 31, 2006Publication date: August 2, 2007Inventors: Shaoping Tang, Zhiqiang Wu
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Patent number: 7216310Abstract: The present invention provides a method (100) of designing a circuit. The method comprises specifying (105) a design parameter for memory transistors and logic transistors and selecting (110) a test retention-mode bias voltage for the memory transistors. The method further comprises determining (115) a first relationship of a retention-mode leakage current and the design parameter at the test retention-mode bias voltage and obtaining (120) a second relationship of an active-mode drive current and the design parameter. The first and second relationships are used (125) to assess whether there is a range of values of the design parameter where the retention-mode leakage current and the active-mode drive current are within a predefined circuit specification. The method also includes adjusting (130) the test retention-mode bias voltage and repeating the determining and the using if the retention-mode total leakage current or the active-mode drive current is outside of the predefined circuit specification.Type: GrantFiled: November 19, 2004Date of Patent: May 8, 2007Assignee: Texas Instruments IncorporatedInventors: Amitava Chatterjee, David Barry Scott, Theodore W. Houston, Song Zhao, Shaoping Tang, Zhiqiang Wu