Patents by Inventor Chia-Feng Lee
Chia-Feng 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).
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Patent number: 11961546Abstract: A reference circuit for generating a reference current includes a plurality of resistive elements including at least one magnetic tunnel junction (MTJ). A control circuit is coupled to a first terminal of the at least one MTJ and is configured to selectively flow current through the at least one MTJ in the forward and inverse direction to generate a reference current.Type: GrantFiled: August 2, 2021Date of Patent: April 16, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chia-Fu Lee, Hon-Jarn Lin, Po-Hao Lee, Ku-Feng Lin, Yi-Chun Shih, Yu-Der Chih
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Publication number: 20240088224Abstract: A semiconductor structure includes a first gate structure, a second gate structure coupled to the first gate structure, a source region, a first drain region, and a second drain region. The source region is surrounded by the first gate structure and the second gate structure. The first drain region is separated from the source region by the first gate structure. The second drain region is separated from the source region by the second gat structure. A shape of the first drain region and a shape of the second drain region are different from each other from a plan view.Type: ApplicationFiled: November 14, 2023Publication date: March 14, 2024Inventors: HSING-I TSAI, FU-HUAN TSAI, CHIA-CHUNG CHEN, HSIAO-CHUN LEE, CHI-FENG HUANG, CHO-YING LU, VICTOR CHIANG LIANG
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Patent number: 11556189Abstract: A touchpad module includes a touch member, a bracket, a piezoelectric vibration unit and an elastic element. The bracket is located under the touch member. A portion of the touch member is exposed to a first perforation of the bracket. The piezoelectric vibration unit is aligned with the first perforation of the bracket. The piezoelectric vibration unit has a first surface and a second surface, which are opposed to each other. The elastic element installed on the bracket and contacted with the second surface of the piezoelectric vibration unit. When the piezoelectric vibration unit vibrates, a first reaction force is generated between the first surface of the piezoelectric vibration unit and the portion of the touch member exposed to the first perforation, and a second reaction force is generated between the second surface of the piezoelectric vibration unit and the elastic element.Type: GrantFiled: October 26, 2021Date of Patent: January 17, 2023Assignee: PRIMAX ELECTRONICS LTD.Inventors: Chia-Feng Lee, Kai-Wen Cheng, Chang-Tse Lee, Guan-Hao Su
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Publication number: 20210342767Abstract: An externally-connected shop floor control (SFC) system comprising M shop floor control (SFC) devices is disclosed. By letting each of the M SFC devices be electrically connected between one test machine and one information read-out device, the SFC system is successfully implemented into a production line. Therefore, each of the M SFC devices is adopted to achieve a re-verification of pass record for a test object that is transferred from a previous-stage test machine, and is also adopted for collecting related test data of the test object transferred from a current-stage test machine. As such, the SFC system can be easily implemented into any one type of production line, so as to assist the manager of the production line in data collection, station passing control, manufacturing reports, and control of production efficiency and yield, without spending much cost of human resources and software/firmware developing.Type: ApplicationFiled: July 24, 2020Publication date: November 4, 2021Inventors: SHIH-CHIEH HSU, WEI-LUNG HUANG, PEI-MING CHANG, PAO-CHUNG CHAO, TZU-CHI TSENG, CHIA-FENG LEE
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Patent number: 11093053Abstract: In some embodiments, an input device includes a housing having a top surface, a touch sensor disposed on the top surface of the housing, and a processor disposed in the housing. The touch sensor can be configured to detect a contact by a hand on the top surface of the housing and generate touch data corresponding to the detected contact by the hand. The processor can be configured to control operation of the touch sensor and receive the touch data, determine an orientation of the hand with respect to the housing based on the touch data, and calibrate a detected movement of the input device based on the determined orientation of the hand with respect to the housing. An image sensor and/or one or more IMUs can be used to detect 2D and/or 3D movement of the input device.Type: GrantFiled: November 12, 2019Date of Patent: August 17, 2021Assignee: Logitech Europe S.A.Inventors: Chun-Wei Su, Kuan-Lin Wu, Laurent Mealares, Thibaut Mauron, Chia Feng Lee, Christina Chen, Alice Liu, Chih-Wei Chen, Kuo Hsiang Chen, Joe Chiu, Charles Gigandet
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Patent number: 11061448Abstract: A touchpad module includes a touch member, a bracket, an elastic element and a spacer. The bracket is located under the touch member. The elastic element is arranged between the touch member and the bracket. The spacer is arranged between the elastic element and the touch member. While the touch member is pressed down, the touch member is moved downwardly to compress the spacer and the elastic element is pushed by the at least one spacer. Consequently, the elastic element is subjected to deformation and extended toward the corresponding perforation. The present invention further provides a computing device with the touchpad module.Type: GrantFiled: April 27, 2020Date of Patent: July 13, 2021Assignee: PRIMAX ELECTRONICS LTD.Inventors: Tai-Sou Huang, Chia-Feng Lee, Chang-Tse Lee, Chun-Ming Hsu
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Patent number: 10699858Abstract: The present invention provides a keyboard device, including a plurality of keys, thin film circuit boards, and key bottom plates. A connection component of the key is connected between a keycap of the key and a bottom plate connection portion of key bottom plate, and the bottom plate connection portion has a connection portion surface corresponding to the keycap and a raised portion formed on the connection portion surface. When the keycap moves downward relative to the thin film circuit board, a lower surface of the keycap knocks the raised portion.Type: GrantFiled: November 13, 2018Date of Patent: June 30, 2020Assignee: PRIMAX ELECTRONICS LTD.Inventors: Sheng-Fan Chang, Che-An Li, Ding-Hsiang Pan, Chia-Feng Lee
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Publication number: 20200150788Abstract: In some embodiments, an input device includes a housing having a top surface, a touch sensor disposed on the top surface of the housing, and a processor disposed in the housing. The touch sensor can be configured to detect a contact by a hand on the top surface of the housing and generate touch data corresponding to the detected contact by the hand. The processor can be configured to control operation of the touch sensor and receive the touch data, determine an orientation of the hand with respect to the housing based on the touch data, and calibrate a detected movement of the input device based on the determined orientation of the hand with respect to the housing. An image sensor and/or one or more IMUs can be used to detect 2D and/or 3D movement of the input device.Type: ApplicationFiled: November 12, 2019Publication date: May 14, 2020Inventors: Chun-Wei Su, Kuan-Lin Wu, Laurent Mealares, Thibaut Mauron, Chia Feng Lee, Christina Chen, Alice Liu, Chih-Wei Chen, Kuo Hsiang Chen, Joe Chiu, Charles Gigandet
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Patent number: 10559436Abstract: System and methods for providing a keyframe module for a input device are disclosed. In an embodiment, the input device includes a keyframe having a key opening, and a key disposed within the key opening. The key includes a keycap having a bottom surface, a plurality of tabs that extend laterally from the bottom surface of the keycap, and a protrusion extending from the bottom surface of the keycap. A compressible dome structure is disposed underneath the protrusion, and a plate is coupled to the keyframe and disposed underneath the compressible dome structure. A plurality of openings is disposed within the plate, where a location of the plurality of openings corresponds to a location of the plurality of tabs such that one or more of the plurality of tabs pass through one or more of the plurality of openings in response to the depression of the key.Type: GrantFiled: January 26, 2018Date of Patent: February 11, 2020Assignee: Logitech Europe S.A.Inventors: Linus Chien, Chia Feng Lee
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Publication number: 20190387825Abstract: A head mounted device for a helmet includes a connection module, a flexible bracket, a power supply seat and a function module. While the flexible bracket is moved relative to the connection module, a position of the power supply seat relative to the helmet is adjusted. While the function module is moved relative to the power supply seat, an orientation of the function unit is adjusted.Type: ApplicationFiled: September 27, 2018Publication date: December 26, 2019Inventors: Chia-Feng Lee, Chang-Tse Lee, Kai-Wen Cheng, Wei-Lung Huang
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Patent number: 10514780Abstract: In some embodiments, an input device includes a housing having a top surface, a touch sensor disposed on the top surface of the housing, and a processor disposed in the housing. The touch sensor can be configured to detect a contact by a hand on the top surface of the housing and generate touch data corresponding to the detected contact by the hand. The processor can be configured to control operation of the touch sensor and receive the touch data, determine an orientation of the hand with respect to the housing based on the touch data, and calibrate a detected movement of the input device based on the determined orientation of the hand with respect to the housing. An image sensor and/or one or more IMUs can be used to detect 2D and/or 3D movement of the input device.Type: GrantFiled: December 1, 2017Date of Patent: December 24, 2019Assignee: Logitech Europe S.A.Inventors: Chun-Wei Su, Kuan-Lin Wu, Laurent Mealares, Thibaut Mauron, Chia Feng Lee, Christina Chen, Alice Liu, Chih-Wei Chen, Kuo Hsiang Chen, Joe Chiu, Charles Gigandet
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Patent number: 10492556Abstract: A head mounted device for a helmet includes a connection module, a flexible bracket, a power supply seat and a function module. While the flexible bracket is moved relative to the connection module, a position of the power supply seat relative to the helmet is adjusted. While the function module is moved relative to the power supply seat, an orientation of the function unit is adjusted.Type: GrantFiled: September 27, 2018Date of Patent: December 3, 2019Assignee: PRIMAX ELECTRONICS LTD.Inventors: Chia-Feng Lee, Chang-Tse Lee, Kai-Wen Cheng, Wei-Lung Huang
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Publication number: 20190221385Abstract: The present invention provides a keyboard device, including a plurality of keys, thin film circuit boards, and key bottom plates. A connection component of the key is connected between a keycap of the key and a bottom plate connection portion of key bottom plate, and the bottom plate connection portion has a connection portion surface corresponding to the keycap and a raised portion formed on the connection portion surface. When the keycap moves downward relative to the thin film circuit board, a lower surface of the keycap knocks the raised portion.Type: ApplicationFiled: November 13, 2018Publication date: July 18, 2019Inventors: Sheng-Fan Chang, Che-An Li, Ding-Hsiang Pan, Chia-Feng Lee
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Publication number: 20190171302Abstract: In some embodiments, an input device includes a housing having a top surface, a touch sensor disposed on the top surface of the housing, and a processor disposed in the housing. The touch sensor can be configured to detect a contact by a hand on the top surface of the housing and generate touch data corresponding to the detected contact by the hand. The processor can be configured to control operation of the touch sensor and receive the touch data, determine an orientation of the hand with respect to the housing based on the touch data, and calibrate a detected movement of the input device based on the determined orientation of the hand with respect to the housing. An image sensor and/or one or more IMUs can be used to detect 2D and/or 3D movement of the input device.Type: ApplicationFiled: December 1, 2017Publication date: June 6, 2019Inventors: Chun-Wei Su, Eileen Wu, Laurent Mealares, Thibaut Mauron, Chia Feng Lee, Christina Chen, Alice Liu, Chih-Wei Chen, Kuo Hsiang Chen, Joe Chiu, Charles Gigandet
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Publication number: 20190096605Abstract: A key structure includes a supporting plate, a triggering switch, a keycap and a soft element. The triggering switch is located over the supporting plate. The keycap is located over the triggering switch. When an external force is received by the keycap, the triggering switch is pushed by the keycap. The soft element is disposed on an inner surface of the keycap. When the soft element is contacted with the triggering switch, the soft element is subjected to deformation. When the soft element is contacted with the triggering switch, a portion of the triggering switch is inserted into the deformed soft element to limit a sliding action of the triggering switch. Consequently, the mechanical key switch provides enhanced tactile feel.Type: ApplicationFiled: January 9, 2018Publication date: March 28, 2019Inventors: CHIA-FENG LEE, CHIN-SUNG PAN, LEI-LUNG TSAI
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Patent number: 10242819Abstract: A key structure includes a supporting plate, a triggering switch, a keycap and a soft element. The triggering switch is located over the supporting plate. The keycap is located over the triggering switch. When an external force is received by the keycap, the triggering switch is pushed by the keycap. The soft element is disposed on an inner surface of the keycap. When the soft element is contacted with the triggering switch, the soft element is subjected to deformation. When the soft element is contacted with the triggering switch, a portion of the triggering switch is inserted into the deformed soft element to limit a sliding action of the triggering switch. Consequently, the mechanical key switch provides enhanced tactile feel.Type: GrantFiled: January 9, 2018Date of Patent: March 26, 2019Assignee: PRIMAX ELECTRONICS LTD.Inventors: Chia-Feng Lee, Chin-Sung Pan, Lei-Lung Tsai
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Publication number: 20180151314Abstract: System and methods for providing a keyframe module for a input device are disclosed. In an embodiment, the input device includes a keyframe having a key opening, and a key disposed within the key opening. The key includes a keycap having a bottom surface, a plurality of tabs that extend laterally from the bottom surface of the keycap, and a protrusion extending from the bottom surface of the keycap. A compressible dome structure is disposed underneath the protrusion, and a plate is coupled to the keyframe and disposed underneath the compressible dome structure. A plurality of openings is disposed within the plate, where a location of the plurality of openings corresponds to a location of the plurality of tabs such that one or more of the plurality of tabs pass through one or more of the plurality of openings in response to the depression of the key.Type: ApplicationFiled: January 26, 2018Publication date: May 31, 2018Inventors: Linus Chien, Chia Feng Lee
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Patent number: 9911554Abstract: System and methods for providing a keyframe module for a input device are disclosed. In an embodiment, the input device includes a keyframe having a key opening, and a key disposed within the key opening. The key includes a keycap having a bottom surface, a plurality of tabs that extend laterally from the bottom surface of the keycap, and a protrusion extending from the bottom surface of the keycap. A compressible dome structure is disposed underneath the protrusion, and a plate is coupled to the keyframe and disposed underneath the compressible dome structure. A plurality of openings is disposed within the plate, where a location of the plurality of openings corresponds to a location of the plurality of tabs such that one or more of the plurality of tabs pass through one or more of the plurality of openings in response to the depression of the key.Type: GrantFiled: June 23, 2015Date of Patent: March 6, 2018Assignee: Logitech Europe S.A.Inventors: Linus Chien, Chia Feng Lee
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Patent number: 9762279Abstract: Embodiments of the invention show a tablet cover that folds to provide a stand for the tablet. A friction hinge between two sections of the tablet cover provides sufficient friction to maintain the stand at the desired angle. In order to allow the cover to be easily flattened after use, a release mechanism is provided in the friction hinge.Type: GrantFiled: September 30, 2015Date of Patent: September 12, 2017Assignee: Logitech Europe S.A.Inventors: Chia Feng Lee, Chien-Chang Lee
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Publication number: 20160379774Abstract: System and methods for providing a keyframe module for a input device are disclosed. In an embodiment, the input device includes a keyframe having a key opening, and a key disposed within the key opening. The key includes a keycap having a bottom surface, a plurality of tabs that extend laterally from the bottom surface of the keycap, and a protrusion extending from the bottom surface of the keycap. A compressible dome structure is disposed underneath the protrusion, and a plate is coupled to the keyframe and disposed underneath the compressible dome structure. A plurality of openings is disposed within the plate, where a location of the plurality of openings corresponds to a location of the plurality of tabs such that one or more of the plurality of tabs pass through one or more of the plurality of openings in response to the depression of the key.Type: ApplicationFiled: June 23, 2015Publication date: December 29, 2016Inventors: Linus Chien, Chia Feng Lee