Patents by Inventor Jian Tian

Jian Tian 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).

  • Patent number: 9680008
    Abstract: A transistor advantageously embodied in a laterally diffused metal oxide semiconductor device having a gate located over a channel region recessed into a semiconductor substrate and a method of forming the same. In one embodiment, the laterally diffused metal oxide semiconductor device includes a source/drain having a lightly doped region located adjacent the channel region and a heavily doped region located adjacent the lightly doped region. The laterally diffused metal oxide semiconductor device further includes an oppositely doped well located under and within the channel region, and a doped region, located between the heavily doped region and the oppositely doped well, having a doping concentration profile less than a doping concentration profile of the heavily doped region.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: June 13, 2017
    Assignee: Empirion, Inc.
    Inventors: Ashraf W. Lotfi, Jian Tian
  • Patent number: 9660510
    Abstract: The invention relates to a voltage converter (1) for a motor vehicle. Said voltage converter (1) comprises a transformer (10) and a power output stage (7). The power output stage (7) comprises at least two semiconductor switches (20, 22, 24, 26) that are connected to the transformer (10), in particular to a primary winding (12) of said transformer (10). The voltage converter (1) has a driver stage (31) which is connected, on the output side, to a control connection of the semiconductor switch (20, 22, 24, 26) and which is designed to actuate said semiconductor switch (20, 22, 24, 26) using a control signal (93, 94), for the purpose of generating an alternating voltage. According to the invention, the driver stage (31) is connected, on the input side, to a pulse signal generator (35) and an input capacitor (60, 62).
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: May 23, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Koch, Jian Tian, Ralf-Peter Bergmann
  • Publication number: 20170092839
    Abstract: The present invention generally relates to high frequency piezoelectric crystal composites, devices, and method for manufacturing the same. In adaptive embodiments an improved imaging device, particularly a medical imaging device or a distance imaging device, for high frequency (>20 MHz) applications involving an imaging transducer assembly is coupled to a signal imagery processor. Additionally, the proposed invention presents a system for photolithography based micro-machined piezoelectric crystal composites and their uses resulting in improved performance parameters.
    Type: Application
    Filed: December 8, 2016
    Publication date: March 30, 2017
    Applicant: CTS Corporation
    Inventors: Pengdi Han, Jian Tian, Kevin Meneou, Brandon Stone
  • Publication number: 20170060281
    Abstract: The present disclosure relates to the field of display technology, and provides a substrate, a method for manufacturing the same and a display device. The substrate includes a signal line and a GND line configured to remove static charges on the signal line.
    Type: Application
    Filed: April 14, 2016
    Publication date: March 2, 2017
    Applicants: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiaodong XIE, Ming HU, Ming ZHANG, Juntao CHEN, Jian TIAN
  • Patent number: 9525124
    Abstract: The present invention generally relates to high frequency piezoelectric crystal composites, devices, and method for manufacturing the same. In adaptive embodiments an improved imaging device, particularly a medical imaging device or a distance imaging device, for high frequency (>20 MHz) applications involving an imaging transducer assembly is coupled to a signal imagery processor. Additionally, the proposed invention presents a system for photolithography based micro-machined piezoelectric crystal composites and their uses resulting in improved performance parameters.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: December 20, 2016
    Assignee: CTS Corporation
    Inventors: Pengdi Han, Jian Tian, Kevin Meneou, Brandon Stone
  • Patent number: 9519269
    Abstract: The present invention generally relates to high frequency piezoelectric crystal composites, devices, and method for manufacturing the same. In adaptive embodiments an improved imaging device, particularly a medical imaging device or a distance imaging device, for high frequency (>20 MHz) applications involving an imaging transducer assembly is coupled to a signal imagery processor. Additionally, the proposed invention presents a system for photolithography based micro-machined piezoelectric crystal composites and their uses resulting in improved performance parameters.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: December 13, 2016
    Assignee: CTS CORPORATION
    Inventors: Pengdi Han, Jian Tian, Kevin Meneou, Brandon Stone
  • Patent number: 9467059
    Abstract: The invention relates to an activation apparatus (20) for a galvanically decoupled direct voltage converter having a synchronous rectifier, comprising a signal generating device (22), which is designed to generate control signals (22c, 22d) for switch devices of the synchronous rectifier and a reference current signal (22b), a first comparator device (23), which is coupled to the signal generating device (22), and which is designed to detect the secondary-side output current (Jo) of the synchronous rectifier, compare it to the reference current signal (22b) and generate a current control signal in dependence on the comparison, and a pulse width modulation device (25), which is coupled to the signal generating device (22) and the first comparator device (23) and which is designed to generate pulse width modulated activation signals (25a) for the switch devices of the synchronous rectifier on the basis of the control signals (22c, 22d) and the current control signal, wherein the signal generating device (22) is
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: October 11, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Eric Hueckel, Stefan Koch, Florian Lieblang, Stephan Binhack, Tobias Pristl, Michael Zeller, Stephan Mueller, Jian Tian, Ralf Bochat, Ralf-Peter Bergmann
  • Publication number: 20160251773
    Abstract: This invention includes a system and a method for growing crystals including a batch auto-feeding mechanism. The proposed system and method provide a minimization of compositional segregation effect during crystal growth by controlling growth rate involving a high-temperature flow control system operable in an open and a closed loop crystal growth process. The ability to control the growth rate without corresponding loss of volatilize-able elements enables significantly improvement in compositional homogeneity and a consequent increase in crystal yield. This growth system and method can be operated in production scale, simultaneously for a plurality of growth crucibles to further the reduction of manufacturing costs, particularly for the crystal materials of binary or ternary systems with volatile components, such as Lead (Pb) and Indium (In).
    Type: Application
    Filed: November 16, 2015
    Publication date: September 1, 2016
    Applicant: CTG ADVANCED MATERIALS, LLC
    Inventors: Pengdi HAN, Jian TIAN
  • Patent number: 9401598
    Abstract: The invention relates to a control unit for a motor vehicle. Said control unit comprises a voltage converter which has an inlet for a direct voltage network. Said voltage converter is designed to generate a direct voltage smaller than an input voltage on the inlet for the direct voltage network and the direct voltage is emitted on the outlet side. According to the invention, the voltage converter comprises an inverter and a transformer which is connected to said inverter. Said voltage converter also comprises an inlet for a discharge signal and is designed to discharge by means of the inverter an intermediate circuit capacitor which is connected to the inlet of the direct voltage network in accordance with the discharge signal, and to reduce a working frequency of the inverter, in particular, compared to the frequency with no discharge signal.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: July 26, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Koch, Jian Tian, Ralf-Peter Bergmann, Stephan Mueller
  • Patent number: 9260794
    Abstract: This invention includes a system and a method for growing crystals including a batch auto-feeding mechanism. The proposed system and method provide a minimization of compositional segregation effect during crystal growth by controlling growth rate involving a high-temperature flow control system operable in an open and a closed loop crystal growth process. The ability to control the growth rate without corresponding loss of volatilize-able elements enables significantly improvement in compositional homogeneity and a consequent increase in crystal yield. This growth system and method can be operated in production scale, simultaneously for a plurality of growth crucibles to further the reduction of manufacturing costs, particularly for the crystal materials of binary or ternary systems with volatile components, such as Lead (Pb) and Indium (In).
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: February 16, 2016
    Assignee: CTG ADVANCED MATERIALS, LLC
    Inventors: Pengdi Han, Jian Tian
  • Patent number: 9178429
    Abstract: A DC-DC converter including a transformer having a primary-side winding and a secondary-side winding with a center tap, and a storage choke. A rectifier circuit is connected to each of the taps at the ends of the secondary-side winding and generates a rectified output voltage at a second output of said DC-DC converter. A snubber circuit is switched via the rectifier circuit and stores energy occurring in said rectifier circuit. (An actuation apparatus includes a switching time determining device designed to determine a time interval as a function of the output voltage, the charge stored in the snubber circuit and the current fluctuations of the current through the storage choke occurring as a result of the rectification. A storage signal generator generates an actuation signal for discharging the snubber circuit as a function of the determined time interval.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: November 3, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Jian Tian, Stefan Koch, Ralf-Peter Bergmann
  • Patent number: 9119769
    Abstract: The present invention provides gas-induced method for phase-transforming organic solids, such as pharmaceutical crystals. The inventive method subjects the polymorphs of pharmaceutical agents to various pressures of gases (such as CO2, N2O, and CH4) to induce phase transform with ease.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: September 1, 2015
    Assignee: The Curators of the University of Missouri
    Inventors: Jerry Lee Atwood, Jian Tian, Scott John Dagarno
  • Publication number: 20150159296
    Abstract: This invention includes a system and a method for growing crystals including a batch auto-feeding mechanism. The proposed system and method provide a minimization of compositional segregation effect during crystal growth by controlling growth rate involving a high-temperature flow control system operable in an open and a closed loop crystal growth process. The ability to control the growth rate without corresponding loss of volatilize-able elements enables significantly improvement in compositional homogeneity and a consequent increase in crystal yield. This growth system and method can be operated in production scale, simultaneously for a plurality of growth crucibles to further the reduction of manufacturing costs, particularly for the crystal materials of binary or ternary systems with volatile components, such as Lead (Pb) and Indium (In).
    Type: Application
    Filed: April 30, 2014
    Publication date: June 11, 2015
    Applicants: H.C. MATERIALS CORPORATION, CTG ADVANCED MATERIALS, LLC
    Inventors: Pengdi HAN, Jian TIAN
  • Publication number: 20150071029
    Abstract: The present invention generally relates to high frequency piezoelectric crystal composites, devices, and method for manufacturing the same. In adaptive embodiments an improved imaging device, particularly a medical imaging device or a distance imaging device, for high frequency (>20 MHz) applications involving an imaging transducer assembly is coupled to a signal imagery processor. Additionally, the proposed invention presents a system for photolithography based micro-machined piezoelectric crystal composites and their uses resulting in improved performance parameters.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 12, 2015
    Inventors: Pengdi Han, Jian Tian, Kevin Meneou, Brandon Stone
  • Publication number: 20150043111
    Abstract: The invention relates to a control unit for a motor vehicle. Said control unit comprises a voltage converter which has an inlet for a direct voltage network. Said voltage converter is designed to generate a direct voltage smaller than an input voltage on the inlet for the direct voltage network and the direct voltage is emitted on the outlet side. According to the invention, the voltage converter comprises an inverter and a transformer which is connected to said inverter. Said voltage converter also comprises an inlet for a discharge signal and is designed to discharge by means of the inverter an intermediate circuit capacitor which is connected to the inlet of the direct voltage network in accordance with the discharge signal, and to reduce a working frequency of the inverter, in particular, compared to the frequency with no discharge signal.
    Type: Application
    Filed: September 26, 2012
    Publication date: February 12, 2015
    Inventors: Stefan Koch, Jian Tian, Ralf-Peter Bergmann, Stephan Mueller
  • Publication number: 20140369079
    Abstract: The invention relates to a voltage converter (1) for a motor vehicle. Said voltage converter (1) comprises a transformer (10) and a power output stage (7). The power output stage (7) comprises at least two semiconductor switches (20, 22, 24, 26) that are connected to the transformer (10), in particular to a primary winding (12) of said transformer (10). The voltage converter (1) has a driver stage (31) which is connected, on the output side, to a control connection of the semiconductor switch (20, 22, 24, 26) and which is designed to actuate said semiconductor switch (20, 22, 24, 26) using a control signal (93, 94), for the purpose of generating an alternating voltage. According to the invention, the driver stage (31) is connected, on the input side, to a pulse signal generator (35) and an input capacitor (60, 62).
    Type: Application
    Filed: November 29, 2012
    Publication date: December 18, 2014
    Inventors: Stefan Koch, Jian Tian, Ralf-Peter Bergmann
  • Publication number: 20140328086
    Abstract: The invention relates to an activation apparatus (20) for a galvanically decoupled direct voltage converter having a synchronous rectifier, comprising a signal generating device (22), which is designed to generate control signals (22c, 22d) for switch devices of the synchronous rectifier and a reference current signal (22b), a first comparator device (23), which is coupled to the signal generating device (22), and which is designed to detect the secondary-side output current (Jo) of the synchronous rectifier, compare it to the reference current signal (22b) and generate a current control signal in dependence on the comparison, and a pulse width modulation device (25), which is coupled to the signal generating device (22) and the first comparator device (23) and which is designed to generate pulse width modulated activation signals (25a) for the switch devices of the synchronous rectifier on the basis of the control signals (22c, 22d) and the current control signal, wherein the signal generating device (22) is
    Type: Application
    Filed: August 2, 2012
    Publication date: November 6, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Eric Hueckel, Stefan Koch, Florian Lieblang, Stephan Binhack, Tobias Pristl, Michael Zeller, Stephan Mueller, Jian Tian, Ralf Bochat, Ralf-Peter Bergmann
  • Publication number: 20140225191
    Abstract: A transistor advantageously embodied in a laterally diffused metal oxide semiconductor device having a gate located over a channel region recessed into a semiconductor substrate and a method of forming the same. In one embodiment, the laterally diffused metal oxide semiconductor device includes a source/drain having a lightly doped region located adjacent the channel region and a heavily doped region located adjacent the lightly doped region. The laterally diffused metal oxide semiconductor device further includes an oppositely doped well located under and within the channel region, and a doped region, located between the heavily doped region and the oppositely doped well, having a doping concentration profile less than a doping concentration profile of the heavily doped region.
    Type: Application
    Filed: April 15, 2014
    Publication date: August 14, 2014
    Applicant: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Jian Tian
  • Patent number: 8728238
    Abstract: This invention includes a system and a method for growing crystals including a batch auto-feeding mechanism. The proposed system and method provide a minimization of compositional segregation effect during crystal growth by controlling growth rate involving a high-temperature flow control system operable in an open and a closed loop crystal growth process. The ability to control the growth rate without corresponding loss of volatilize-able elements enables significantly improvement in compositional homogeneity and a consequent increase in crystal yield. This growth system and method can be operated in production scale, simultaneously for a plurality of growth crucibles to further the reduction of manufacturing costs, particularly for the crystal materials of binary or ternary systems with volatile components, such as Lead (Pb) and Indium (In).
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: May 20, 2014
    Assignee: H.C. Materials Corporation
    Inventors: Pengdi Han, Jian Tian
  • Publication number: 20140126247
    Abstract: The invention relates to a DC-DC voltage converter (1), having a transformer (2) having a primary winding (2a) and a secondary winding (2b, 2c) having a centre tap, an output inductor (3), which is connected to the centre tap and to a first output connection (9a), a synchronous rectifier circuit (4) having two synchronous rectifier switches (14a, 14b), each of which is connected to the terminal taps of the secondary winding (2b, 2c), and which are designed to produce a rectified output voltage on a second output connection (9b), and a snubber circuit (5) that is switched by means of the synchronous rectifier circuit (4).
    Type: Application
    Filed: April 3, 2012
    Publication date: May 8, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Stefan Koch, Jian Tian