Patents by Inventor Chun-Han Lee

Chun-Han Lee 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).

  • Publication number: 20190252896
    Abstract: A charging circuit includes a power conversion circuit, an inductor, and at least one conversion capacitor. The power conversion circuit includes a conversion switch circuit and a conversion control circuit. The conversion switch circuit includes an upper switch, a lower switch, and at least one auxiliary switch. In a switching conversion mode, the conversion control circuit operates the conversion switch circuit to switch the inductor to plural voltage levels repetitively for converting an input power to a charging power to charge a battery by switching power conversion. In a capacitive conversion mode, the conversion control circuit operates the conversion switch circuit to switch the conversion capacitor between two of voltage division nodes periodically for converting the input power to the charging power by capacitive power conversion.
    Type: Application
    Filed: October 22, 2018
    Publication date: August 15, 2019
    Inventors: Wei-Jen Huang, Tsung-Han Lee, Shun-Yu Huang, Chun-Kai Chang
  • Publication number: 20190244988
    Abstract: Some embodiments relate to a device array including a plurality of devices arranged in a semiconductor substrate. A protection ring circumscribes an outer perimeter of the device array. The protection ring includes a first ring neighboring the device array, a second ring circumscribing the first ring and meeting the first ring at a first p-n junction, and a third ring circumscribing the second ring and meeting the second ring at a second p-n junction. The first ring has a first width, the second ring has a second width, and the third ring has a third width. At least two of the first width, the second width, and the third width are different from one another.
    Type: Application
    Filed: April 17, 2019
    Publication date: August 8, 2019
    Inventors: Tsung-Han Tsai, Chun-Hao Chou, Kuo-Cheng Lee, Yung-Lung Hsu, Yun-Wei Cheng
  • Publication number: 20190204380
    Abstract: An embodiment includes a first lead guide, a second lead guide, and a handler. The first lead guide includes a first insulating housing and a first conductive contact having a face and a recessed face. The second lead guide includes a second insulating housing and a second conductive contact. The first and second lead guides are fastened to the handler.
    Type: Application
    Filed: January 24, 2018
    Publication date: July 4, 2019
    Inventors: Chi-Tsung LEE, Ching-Han CHANG, Chun-Hsien LU
  • Publication number: 20190164960
    Abstract: A FinFET device structure is provided. The FinFET device structure includes a fin structure formed over a substrate and a first gate structure formed over the fin structure. The FinFET device structure also includes a first capping layer formed over the first gate structure and a first etching stop layer over the first capping layer and the first gate structure. The FinFET device structure further includes a first source/drain (S/D) contact structure formed over the fin structure and adjacent to the first gate structure. A portion of the first etching stop layer which is directly above the first capping layer is higher than another portion of the first etching stop layer which is directly above the first gate spacer layer.
    Type: Application
    Filed: November 24, 2017
    Publication date: May 30, 2019
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chun-Han CHEN, Chen-Ming LEE, Fu-Kai YANG, Mei-Yun WANG, Jr-Hung LI, Bo-Cyuan LU
  • Publication number: 20190157154
    Abstract: The present disclosure describes an exemplary fabrication method of a p-type fully strained channel that can suppress the formation of {111} facets during a silicon germanium epitaxial growth. The exemplary method includes the formation of silicon epitaxial layer on a top, carbon-doped region of an n-type region. A recess is formed in the silicon epitaxial layer via etching, where the recess exposes the top, carbon-doped region of the n-type region. A silicon seed layer is grown in the recess, and a silicon germanium layer is subsequently epitaxially grown on the silicon seed layer to fill the recess. The silicon seed layer can suppress the formation of growth defects such as, for example, {111} facets, during the silicon germanium epitaxial layer growth.
    Type: Application
    Filed: November 21, 2017
    Publication date: May 23, 2019
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chun-Chieh Wang, Huai-Tei Yang, Zheng-Yang Pan, Shahaji B. More, Shih-Chieh Chang, Cheng-Han Lee
  • Publication number: 20190157320
    Abstract: A method for forming a high dielectric constant (high-?) dielectric layer on a substrate including performing a pre-clean process on a surface of the substrate. A chloride precursor is introduced on the surface. An oxidant is introduced to the surface to form the high-? dielectric layer on the substrate. A chlorine concentration of the high-? dielectric layer is lower than about 8 atoms/cm3.
    Type: Application
    Filed: January 7, 2019
    Publication date: May 23, 2019
    Inventors: Tsung-Han Tsai, Horng-Huei Tseng, Chun-Hao Chou, Kuo-Cheng Lee, Yung-Lung Hsu, Yun-Wei Cheng
  • Patent number: 10294100
    Abstract: A method for manufacturing a gas detector by a micro-electrical-mechanical systems (MEMS) process. The method includes providing a MEMS wafer including a plurality of mutually adjacent units; forming a gas sensing material layer on the MEMS wafer; bonding a structure reinforcing layer and the MEMS wafer through anode bonding; providing an adhesive tape; performing a cutting process to form a gas detection unit; and adhering the gas detection unit on a substrate by the adhesive tape to form a gas detector. The structure reinforcing layer is capable of enhancing the strength of a device and preventing edge collapsing, and hence enhancing the overall yield rate and reducing costs.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: May 21, 2019
    Assignee: Taiwan Carbon Nano Technology Corporation
    Inventors: Yu-Hsuan Liao, Fang-Song Tsai, Ya-Han Wu, Chun-Hsien Tsai, Ting-Chuan Lee, Chun-Jung Tsai
  • Publication number: 20190148552
    Abstract: A method for forming a semiconductor device is provided. The method includes forming a gate stack to partially cover a semiconductor structure. The method also includes forming a first semiconductor material over the semiconductor structure. The method further includes forming a second semiconductor material over the first semiconductor material. In addition, the method includes forming a third semiconductor material over the second semiconductor material. The first semiconductor material and the third semiconductor material together surround the second semiconductor material. The second semiconductor material has a greater dopant concentration than that of the first semiconductor material or that of the third semiconductor material.
    Type: Application
    Filed: December 24, 2018
    Publication date: May 16, 2019
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Shahaji B. MORE, Zheng-Yang PAN, Chun-Chieh WANG, Cheng-Han LEE, Shih-Chieh CHANG
  • Publication number: 20180002896
    Abstract: A drive control method of a hydraulic actuator of a construction machine includes: determining whether a rotation operation lever and a working device operation lever are operated; calculating the required pressure of a hydraulic cylinder fix a working device according to the operation amount of the rotation operation lever; calculating the required flow rates of a swing motor and the hydraulic cylinder for the working device, the required flow rates corresponding to the operation amounts of the working device operation lever and the rotation operation lever; calculating the opening areas of the first and second proportional solenoid valves of an inlet side and an outlet side by using the calculated required pressure and required flow rates of the hydraulic cylinder for the working device and the swing motor; and calculating current values to be inputted into the first and second proportional solenoid valves of the inlet side and the outlet side according to preset data values or a table in comparison with th
    Type: Application
    Filed: January 8, 2015
    Publication date: January 4, 2018
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Tae-Rang JUNG, Chun-Han LEE
  • Patent number: 9765503
    Abstract: The present invention relates to a hydraulic control system for construction machinery capable of variably adjusting a set pressure of a relief valve, which controls a set pressure of a hydraulic system, according to a value inputted by means of pressure in the hydraulic system or the manipulation of a joystick.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: September 19, 2017
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Chun-Han Lee
  • Patent number: 9725882
    Abstract: A flow control apparatus and a flow control method for a construction machine are disclosed, which can perform ground leveling work for smoothing the ground by the self weight of a boom without supplying hydraulic fluid from a hydraulic pump to a hydraulic cylinder.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: August 8, 2017
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Chun-Han Lee
  • Publication number: 20170125803
    Abstract: An electrode material for a lithium ion battery includes conductive active particles and an ionic cover layer covering the active particles. The ionic cover layer includes a matrix of functional group-substituted polyaryletherketone and graphene particles dispersed in the matrix. A method for preparing the electrode material and an electrode including the electrode material are also disclosed.
    Type: Application
    Filed: January 11, 2017
    Publication date: May 4, 2017
    Inventors: Kuo-Feng CHIU, Po-Nien LAI, Shin-Lee LIU, Chun-Han LEE
  • Patent number: 9562345
    Abstract: A traveling control method for performing a smoothing work or the like through an operation of a working device during traveling is provided.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: February 7, 2017
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Chun-Han Lee
  • Publication number: 20170016460
    Abstract: Disclosed are a device for controlling a regenerated flow rate for a construction machine and a method for controlling the same, the device being able to supply a large chamber of an arm cylinder with a part of operating oil, which is discharged from the arm cylinder to an operating oil tank during arm-in driving, and regenerating the same. The present invention provides a device for controlling a regenerated flow rate for a construction machine, the device being characterized by comprising: a variable capacity-type hydraulic pump and a pilot pump; an arm cylinder driven by operating oil supplied from the hydraulic pump; a variable arm regeneration valve installed in a passage between the arm cylinder and the operating oil tank; and an electronic proportional valve installed in a passage between the pilot pump and the arm regeneration valve.
    Type: Application
    Filed: January 27, 2014
    Publication date: January 19, 2017
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Tae-Rang Jung, Chun-Han Lee
  • Patent number: 9222488
    Abstract: A system and method for controlling engine revolutions for a hybrid construction machine, including an engine, a hydraulic pump which is driven by the engine to drive a hydraulic actuator with discharged hydraulic fluid, a motor-generator which is driven by the engine to generate electricity and to drive the hydraulic pump as a motor supplementing the engine, an energy storage device which is charged with electric energy generated by the motor-generator and which supplies the electric energy for motor operation of the motor-generator, a torque detection unit for detecting an output torque of the hydraulic pump that is required to drive the hydraulic actuator, and a hybrid control unit for controlling the motor operation of the motor-generator to supplement the engine output if the change of the output torque of the hydraulic pump exceeds a predetermined level and it is determined that an engine revolution drop will occur.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: December 29, 2015
    Assignee: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB
    Inventors: Jong Min Kang, Ahn Kyun Jung, Jae Hong Kim, Chun Han Lee, Jung Sun Jo
  • Publication number: 20150370254
    Abstract: Disclosed is a construction equipment driving control method for controlling machine driving without using an additional straight driving pedal.
    Type: Application
    Filed: February 8, 2013
    Publication date: December 24, 2015
    Inventor: Chun-Han LEE
  • Publication number: 20150354174
    Abstract: Disclosed is a method for controlling a driving speed of construction machinery for preventing a sudden change in the driving speed during a combined operation for operating a work device while driving an excavator. The method for controlling the driving speed of the construction machinery, according to one embodiment of the present invention, relates to the method for controlling the driving speed of the construction machinery comprising a lower driving body, a turning device for turning an upper turning body with respect to the lower driving body, a driving device, the work device, an electronic proportional valve for controlling the discharge flow rate of a hydraulic pump, and a controller.
    Type: Application
    Filed: January 23, 2013
    Publication date: December 10, 2015
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Chun-Han LEE
  • Publication number: 20150322648
    Abstract: A flow control apparatus and a flow control method for a construction machine are disclosed, which can perform ground leveling work for smoothing the ground by the self weight of a boom without supplying hydraulic fluid from a hydraulic pump to a hydraulic cylinder.
    Type: Application
    Filed: January 24, 2013
    Publication date: November 12, 2015
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Chun-Han LEE
  • Patent number: 9182312
    Abstract: The present invention relates to a control system for a hybrid excavator including an engine, a hydraulic pump driven by the engine to drive a hydraulic actuator by hydraulic fluid, a generator driven by the engine to generate electric energy, and an energy storage device charging the electric energy generated by the generator and supplying the electric energy to an electric actuator, the control system comprising: a required torque detection means for detecting a torque that is required to drive the hydraulic pump; a charge amount detection means for detecting a charge rate (or charge amount) of the electric energy storage device; a memory storing a generation degree (or generation amount) in accordance with the torque and the charge rate (or charge amount); and a hybrid control means for controlling the generator in accordance with the torque value detected by the required torque detection means and the generation amount in a memory means that corresponds to the charge rate value (or charge amount) detected
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: November 10, 2015
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jae-Hong Kim, Chun-Han Lee
  • Patent number: 9145657
    Abstract: A grading control system using an excavator is disclosed, which determines and controls an operation amount of an attachment by combining an estimated pose of the attachment and an operator's operation signal of a joystick when a working mode for grading the ground is selected.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: September 29, 2015
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Chun-Han Lee