Patents by Inventor Chih-Kai Huang

Chih-Kai Huang 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: 20240130140
    Abstract: A semiconductor device includes a substrate having a magnetic tunneling junction (MTJ) region and a logic region, a magnetic tunneling junction (MTJ) on the MTJ region and a first metal interconnection on the MTJ. Preferably, a top view of the MTJ includes a circle and a top view of the first metal interconnection includes an ellipse overlapping the circle.
    Type: Application
    Filed: December 26, 2023
    Publication date: April 18, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Ting-Hsiang Huang, Yi-Chung Sheng, Sheng-Yuan Hsueh, Kuo-Hsing Lee, Chih-Kai Kang
  • Patent number: 11925002
    Abstract: A casing structure with functionality of effective thermal management is disclosed, which consists of a casing member, a low thermal conductivity medium, a second heat spreader, and a first heat spreader. When a user operates the electronic device, heat generated from CPU and/or GPU is transferred to the second heat spreader via the first heat spreader, and then is two-dimensionally spread in the second heat spreader. Consequently, the heat is dissipated away from the casing member to air due to the outstanding thermal radiation ability of the casing member. The low thermal conductivity medium is adopted for controlling a heat transfer of heat transferring paths from the heat source and ends to the casing member. By applying the casing structure in an electronic device by a form of a top casing and/or a back casing, an outer surface temperature of the casing member can be well controlled.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: March 5, 2024
    Assignee: AMLI MATERIALS TECHNOLOGY CO., LTD.
    Inventors: Jian-Jia Huang, Chun-Kai Lin, Chih-Ching Chen
  • Publication number: 20240069651
    Abstract: A virtual reality tracker includes a first part and a second part. The first part includes a plurality of first light-emitting diodes (LEDs) and an inner measurement unit (IMU). The inertial measurement unit is used for measuring the acceleration and the triaxial angular velocity of the first part. The second part includes a plurality of second light-emitting diodes. Moreover, the first part and the second part are connected by a flexible component.
    Type: Application
    Filed: August 30, 2022
    Publication date: February 29, 2024
    Applicant: HTC Corporation
    Inventors: Chun-Kai HUANG, Chih-Chien CHEN, Yan-Ru CHEN
  • Patent number: 11735461
    Abstract: A semiconductor structure disposed on a temporary carrier board is provided. Multiple adhesive layers are disposed on the temporary carrier. The semiconductor structure includes an adhesive-layer structure and a micro light-emitting element. The adhesive-layer structure includes a mending adhesive layer and a buffer layer. The mending adhesive layer is disposed on the temporary carrier board. The micro light-emitting element is disposed on the mending adhesive layer. The buffer layer is disposed between the mending adhesive layer and the micro light-emitting element. A height of the mending adhesive layer is less than a height of each of the adhesive layers in a thickness direction of the temporary carrier board. A sum of the height of the mending adhesive layer and the height of the buffer layer is greater than or equal to a height of each of the adhesive layers.
    Type: Grant
    Filed: September 26, 2021
    Date of Patent: August 22, 2023
    Assignee: PlayNitride Display Co., Ltd.
    Inventors: Yu-Yun Lo, Chih-Kai Huang, Bo-Wei Wu, Shiang-Ning Yang
  • Publication number: 20220375778
    Abstract: A semiconductor structure disposed on a temporary carrier board is provided. Multiple adhesive layers are disposed on the temporary carrier. The semiconductor structure includes an adhesive-layer structure and a micro light-emitting element. The adhesive-layer structure includes a mending adhesive layer and a buffer layer. The mending adhesive layer is disposed on the temporary carrier board. The micro light-emitting element is disposed on the mending adhesive layer. The buffer layer is disposed between the mending adhesive layer and the micro light-emitting element. A height of the mending adhesive layer is less than a height of each of the adhesive layers in a thickness direction of the temporary carrier board. A sum of the height of the mending adhesive layer and the height of the buffer layer is greater than or equal to a height of each of the adhesive layers.
    Type: Application
    Filed: September 26, 2021
    Publication date: November 24, 2022
    Applicant: PlayNitride Display Co., Ltd.
    Inventors: Yu-Yun Lo, Chih-Kai Huang, Bo-Wei Wu, Shiang-Ning Yang
  • Patent number: 10890616
    Abstract: A self-check system and a method thereof are disclosed. In the self-check system, a memory stores a safety check program, a main application program and a predetermined checksum data. The safety check program include a circuit check program, a watchdog circuit reset program and a checksum check program. When a chip system is powered on, a processing unit executes the main application program, and then executes an interrupt call to generate an interrupt, so as to execute the safety check program and the circuit check program to check a to-be-checked circuit. The processing unit also executes the watchdog circuit reset program to reset a counting value of a watchdog circuit. The processing unit also executes the checksum check program to calculate a checksum data of the first safety check program, and reset the chip system when the calculated checksum data is not equal to the predetermined checksum data.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: January 12, 2021
    Assignee: Nuvoton Technology Corporation
    Inventors: Chih-Kai Huang, Ping-Ying Chu, Chih-Shien Yang
  • Publication number: 20200110130
    Abstract: A self-check system and a method thereof are disclosed. In the self-check system, a memory stores a safety check program, a main application program and a predetermined checksum data. The safety check program include a circuit check program, a watchdog circuit reset program and a checksum check program. When a chip system is powered on, a processing unit executes the main application program, and then executes an interrupt call to generate an interrupt, so as to execute the safety check program and the circuit check program to check a to-be-checked circuit. The processing unit also executes the watchdog circuit reset program to reset a counting value of a watchdog circuit. The processing unit also executes the checksum check program to calculate a checksum data of the first safety check program, and reset the chip system when the calculated checksum data is not equal to the predetermined checksum data.
    Type: Application
    Filed: April 4, 2019
    Publication date: April 9, 2020
    Inventors: CHIH-KAI HUANG, PING-YING CHU, CHIH-SHIEN YANG
  • Patent number: 9672907
    Abstract: A resistive random access memory device includes: a first control line, a second control line, a RRAM cell, a first programmable current source and a first programmable voltage source. The RRAM cell is coupled between the first control line and the second control line, and has a programmable resistive element. The first programmable current source is coupled to the first control line, and for selectively providing a configuration current to the RRAM cell. The first programmable voltage source is coupled to the first control line, and for selectively providing a configuration voltage to the RRAM cell. Additionally, a state of the programmable resistive element of the RRAM cell is configured according to the configuration current and the configuration voltage. Under architecture of the RRAM cell of the present invention, a reading circuit for the RRAM device can be implemented with a simple inverter instead of a complicated current sensing amplifier.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: June 6, 2017
    Assignee: Brocere Electronics company limited
    Inventors: Chih-Hao Lai, Chih-Kai Huang, Jou-Hung Wang
  • Publication number: 20160217851
    Abstract: A resistive random access memory device includes: a first control line, a second control line, a RRAM cell, a first programmable current source and a first programmable voltage source. The RRAM cell is coupled between the first control line and the second control line, and has a programmable resistive element. The first programmable current source is coupled to the first control line, and for selectively providing a configuration current to the RRAM cell. The first programmable voltage source is coupled to the first control line, and for selectively providing a configuration voltage to the RRAM cell. Additionally, a state of the programmable resistive element of the RRAM cell is configured according to the configuration current and the configuration voltage. Under architecture of the RRAM cell of the present invention, a reading circuit for the RRAM device can be implemented with a simple inverter instead of a complicated current sensing amplifier.
    Type: Application
    Filed: January 27, 2015
    Publication date: July 28, 2016
    Inventors: Chih-Hao Lai, Chih-Kai Huang, Jou-Hung Wang
  • Patent number: 9223005
    Abstract: An electronic apparatus, a method and a system for measuring a location are provided. A motion information is obtained according to a moving process of the electronic apparatus. And in the moving process, a displacement vector from a first sensing point to a second sensing point is calculated according to the motion information when an identification tag is sensed by the electronic apparatus, for obtaining a relative location of the first sensing point and the second sensing point.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: December 29, 2015
    Assignee: Wistron Corporation
    Inventors: Yueh-Hsien Lin, Chih-Kai Huang
  • Publication number: 20150372629
    Abstract: A sensor-less control system, a method and an apparatus of sensor-less field oriented control for permanent magnet motors are provided. The sensor-less control system includes a Clarke transform module, a Park transform module and an angle estimation module. The Clarke transform module generates orthogonal current signals in accordance with motor phase currents. The Park transform module generates a current signal in response to the orthogonal current signals and an angle signal. The angle estimation module generates the angle signal in response to the current signal. The angle signal is related to a commutation angle of the permanent magnet motor. The current signal is controlled approximate to zero. The angle signal associated with an angle-shift signal is configured to generate three phase motor voltages.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 24, 2015
    Inventors: Chih-Kai Huang, Ta-Yung Yang, Shih-Jen Yang
  • Patent number: 9219432
    Abstract: An angle estimation control system of a permanent magnet motor is provided. The angle estimation control system includes a Clarke transform module, a Park transform module, and an angle estimation module. The Clarke transform module generates orthogonal current signals in accordance with motor phase currents. The Park transform module generates a current signal in response to the orthogonal current signals and an angle signal. The angle estimation module generates the angle signal in response to the current signal. The angle signal is related to a commutation angle of the permanent magnet motor. The current signal is controlled to be approximately equal to zero. The angle signal is further coupled to generate three phase motor voltage signals.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: December 22, 2015
    Assignee: SYSTEM GENERAL CORPORATION
    Inventors: Chih-Kai Huang, Yi-Chi Lin, Pei-Yu Chiang
  • Publication number: 20150093728
    Abstract: A learning estimation method comprises tagging an identification tag on a learning object, recording a learning result corresponding to the learning object when a learner utilizes the learning object to process a learning operation, and obtaining an analytical result for the learner according to the learning result and a learning principle, wherein the identification tag is utilized to recognize characteristics of the learning object.
    Type: Application
    Filed: April 8, 2014
    Publication date: April 2, 2015
    Applicant: Wistron Corporation
    Inventors: Yueh-Hsien Lin, Yu-Ling Chan, Chih-Kai Huang, Chih-Kang Chen
  • Publication number: 20140354410
    Abstract: An electronic apparatus, a method and a system for measuring a location are provided. A motion information is obtained according to a moving process of the electronic apparatus. And in the moving process, a displacement vector from a first sensing point to a second sensing point is calculated according to the motion information when an identification tag is sensed by the electronic apparatus, for obtaining a relative location of the first sensing point and the second sensing point.
    Type: Application
    Filed: August 5, 2013
    Publication date: December 4, 2014
    Applicant: Wistron Corporation
    Inventors: Yueh-Hsien Lin, Chih-Kai Huang
  • Publication number: 20140062911
    Abstract: The present invention discloses a display device for connecting a touch device. The display device includes a display screen, a screen stand and a signal transmission port. The screen stand is connected to the display screen and for supporting the display screen. A slot is formed on a side of the screen stand and for accommodating the touch device. The signal transmission port is installed on an end of the slot for connecting with a connection port of the touch device as the touch device is inserted into the slot, to transmit signals to the connection port, so that the display screen displays images corresponding to the signals transmitted from the touch device.
    Type: Application
    Filed: February 25, 2013
    Publication date: March 6, 2014
    Applicant: WISTRON CORPORATION
    Inventors: Chih-Yao Wu, Chih-Kang Chen, Chih-Kai Huang
  • Publication number: 20140028228
    Abstract: An angle estimation control system of a permanent magnet motor is provided. The angle estimation control system includes a Clarke transform module, a Park transform module, and an angle estimation module. The Clarke transform module generates orthogonal current signals in accordance with motor phase currents. The Park transform module generates a current signal in response to the orthogonal current signals and an angle signal. The angle estimation module generates the angle signal in response to the current signal. The angle signal is related to a commutation angle of the permanent magnet motor. The current signal is controlled to be approximately equal to zero. The angle signal is further coupled to generate three phase motor voltage signals.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 30, 2014
    Inventors: Chih-Kai HUANG, Yi-Chi LIN, Pei-Yu CHIANG
  • Patent number: 6799997
    Abstract: A cable end connector assembly (1) includes a plurality of electrical connectors (10), a plurality of cables (20), an insulative cover (40), and a conductor (30). Each electrical connector includes an insulative housing (11), a plurality of contacts (12) mounted in the insulative housing, and a metal shield (131, 132) assembled to the insulative housing. The cable includes a plurality of wires (21) electrically connecting with the contacts and a metal braid having a plurality of outstretched wires (22) electrically connecting with corresponding metal shield. The insulative cover is over-molded with the electrical connectors and one end of the cable. The conductor electrically and mechanically connects with the metal shields of the electrical connectors.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: October 5, 2004
    Assignee: Hon Hai Precision Ind. Co., Ltd
    Inventors: Hsien-Chu Lin, Chieh Chao Yu, Yung-Chien Chung, Chih-Kai Huang
  • Patent number: D941287
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: January 18, 2022
    Assignee: Lenovo (Beijing) Co., Ltd.
    Inventors: Brian Leonard, Chih-kai Huang, Truong Cuong
  • Patent number: D954040
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: June 7, 2022
    Assignee: Lenovo (Beijing) Co., Ltd.
    Inventors: Truong Cuong, Chih-kai Huang
  • Patent number: D1013679
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: February 6, 2024
    Assignee: Lenovo (Beijing) Limited
    Inventors: Chih-kai Huang, Runsheng Liang