Patents by Inventor Chih-Hao Yeh

Chih-Hao Yeh 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: 20240121954
    Abstract: A memory device includes a first stack structure including first gate layers and first insulating layers alternately stacked with each other. A first channel pillar extends through the first stack structure. A second stack structure is located on the first stack structure and includes second gate layers and second insulating layers alternately stacked with each other. A second channel pillar extends through the second stack structure and is separated from the first channel pillar. A first conductive pillar and a second conductive pillar are located in and electrically connecting with the first channel pillar and the second channel pillar. A charge storage structure is located between the first gate layers and the first channel pillar, and between the second gate layers and the second channel pillar. The memory device may be applied to a 3D AND flash memory.
    Type: Application
    Filed: October 11, 2022
    Publication date: April 11, 2024
    Applicant: MACRONIX International Co., Ltd.
    Inventors: Chih-Wei Hu, Teng-Hao Yeh
  • Patent number: 11948497
    Abstract: A display device includes a plurality of sub-pixels. The sub-pixels include a first sub-pixel and a second sub-pixel. The first sub-pixel includes a first light emitting element and a first control circuit. The first control circuit is configured to provide a first driving current to the first light emitting element. The second sub-pixel includes a second light emitting element and a second control circuit. The second control circuit is configured to provide a second driving current to the second light emitting element. The first control circuit and the second control circuit are configured to differently control pulse amplitude of the first driving current and pulse amplitude of the second driving current, such that both of the first light emitting element and the second light emitting element emit at a target wavelength or a color point range (e.g. +/?1.5˜2 nm).
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: April 2, 2024
    Assignee: Lextar Electronics Corporation
    Inventors: Chih-Hao Lin, Chien-Nan Yeh, Jo-Hsiang Chen, Shih-Lun Lai
  • Publication number: 20240106104
    Abstract: An electronic device includes a device body and an antenna module disposed in the device body and including a conductive structure and a coaxial cable including a core wire, a shielding layer wrapping the core wire, and an outer jacket wrapping the shielding layer. The conductive structure includes a structure body and a slot formed on the structure body and penetrating the structure body in a thickness direction of the structure body. A section of the shielding layer extends from the outer jacket and is connected to the structure body. A physical portion of the structure body and the section of the shielding layer are respectively located on two opposite sides of the slot in a width direction of the slot. A section of the core wire extends from the section of the shielding layer and overlaps the slot and the physical portion in the thickness direction.
    Type: Application
    Filed: September 8, 2023
    Publication date: March 28, 2024
    Applicant: COMPAL ELECTRONICS, INC.
    Inventors: Hung-Yu Yeh, Shih-Chia Liu, Yen-Hao Yu, Li-Chun Lee, Chih-Heng Lin, Jui-Hung Lai
  • Publication number: 20240088213
    Abstract: A semiconductor device includes a drift region, a dielectric film, and an anti-type doping layer. The drift region has a first type conductivity. The anti-type doping layer is located between the drift region and the dielectric film, and has a second type conductivity opposite to the first type conductivity so as to change a current path of a current in the drift region, to thereby prevent the current from being influenced by the dielectric film. A method for manufacturing a semiconductor device and a method for reducing an influence of a dielectric film are also disclosed.
    Type: Application
    Filed: November 24, 2023
    Publication date: March 14, 2024
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hsin-Fu LIN, Tsung-Hao YEH, Chih-Wei HUNG
  • Patent number: 11920244
    Abstract: The application discloses examples of a device housing of an electronic device including a magnesium-alloy substrate. The device housing further including a treatment layer applied over the magnesium-alloy substrate and a metallic coating layer applied over the treatment layer to provide a metallic luster. Further, a paint coating layer is disposed over a first portion of the metallic coating layer. Further, a top coating layer is applied over the paint coating layer and a visible second portion of the metallic coating layer.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: March 5, 2024
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chi-Hao Chang, Ya-Ting Yeh, Kuan-Ting Wu, Chih-Hsiung Liao
  • Publication number: 20240068124
    Abstract: An apparatus for producing silicon carbide crystal is provided and includes a composite structure formed by a plurality of graphite layers and silicon carbide seed crystals, wherein a density or thickness of each layer of graphite is gradually adjusted to reduce a difference of a thermal expansion coefficient and Young's modulus between the graphite layers and silicon carbide. The composite structure can be stabilized on a top portion or an upper cover of a crucible made of graphite, thereby preventing the silicon carbide crystal from falling off.
    Type: Application
    Filed: August 23, 2023
    Publication date: February 29, 2024
    Inventors: CHIH-LUNG LIN, PO-FEI YANG, CHIE-SHENG LIU, CHUNG-HAO LIN, HSIN-CHEN YEH, HAO-WEN WU
  • Patent number: 9265056
    Abstract: A communications apparatus is provided. A first radio module provides a first wireless communications service and communicates with a first communications device in compliance with a first protocol. A second radio module provides a second wireless communications service and communicates with a second communications device in compliance with a second protocol. A Co-Located Coexistence radio manager detects activities of the first radio modules, obtains a first traffic pattern describing downlink and/or uplink traffic allocations of the first radio module from the first radio module, and generates a second traffic pattern of the second radio module according to the first traffic pattern to coordinate operations of the first and second radio modules. An associated method is also provided.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: February 16, 2016
    Assignee: MEDIATEK INC.
    Inventors: Chi-Chen Lee, I-Kang Fu, Li-Chun Ko, Hong-Kai Hsu, Chih-Hao Yeh, Jiun-Jang Su
  • Patent number: 9236896
    Abstract: A wireless communications system is provided with a first wireless communications module, a second wireless communications module, and an RF module. The first wireless communications module transmits or receives a first wireless signal, and the second wireless communications module transmits or receives a second wireless signal. The RF module allocates a first transceiving path and a second transceiving path to the first wireless communications module and the second wireless communications module, respectively, to enable the transmission or reception of the first wireless signal and the second wireless signal at the same time.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: January 12, 2016
    Assignee: MEDIATEK INC.
    Inventors: Chih-Hao Yeh, Hong-Kai Hsu, En-Chieh Hsia, Hsien-Chyi Chiou, Wei Wang, Shu-Ping Shiu
  • Patent number: 8913962
    Abstract: A wireless communications includes a first wireless communications and a second wireless communications. The first wireless communications module transmits or receives a first wireless signal in a first frequency band selected from a first frequency range. The second wireless communications module transmits or receives a second wireless signal in a second frequency band selected from a second frequency range, and adjusts a transmission power of the second wireless signal in response to that a frequency offset between the first frequency band and the second frequency band falls within a predetermined range. The first wireless communications module is further configured to determine an in-band range in the overlapping part of the first and second frequency ranges, and a transmission power of the second wireless signal is adjusted in response to a frequency offset between the first frequency band and the second frequency band.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: December 16, 2014
    Assignee: MediaTek Inc
    Inventors: Hong-Kai Hsu, Li-Chun Ko, Chia-Ming Chang, Chih-Hao Yeh, En-Chieh Hsia, I-Lin Hsieh, Wen-Ying Chien, Jwo-An Lin, Ting-Che Tseng, Yuan Chen
  • Publication number: 20140254634
    Abstract: A wireless communications includes a first wireless communications and a second wireless communications. The first wireless communications module transmits or receives a first wireless signal in a first frequency band selected from a first frequency range. The second wireless communications module transmits or receives a second wireless signal in a second frequency band selected from a second frequency range, and adjusts a transmission power of the second wireless signal in response to that a frequency offset between the first frequency band and the second frequency band falls within a predetermined range. The first wireless communications module is further configured to determine an in-band range in the overlapping part of the first and second frequency ranges, and a transmission power of the second wireless signal is adjusted in response to a frequency offset between the first frequency band and the second frequency band.
    Type: Application
    Filed: May 21, 2014
    Publication date: September 11, 2014
    Applicant: MediaTek Inc.
    Inventors: Hong-Kai HSU, Li-Chun KO, Chia-Ming CHANG, Chih-Hao YEH, En-Chieh HSIA, I-Lin HSIEH, Wen-Ying CHIEN, Jwo-An LIN, Ting-Che TSENG, Yuan CHEN
  • Publication number: 20140219216
    Abstract: A communications apparatus is provided. A first radio module provides a first wireless communications service and communicates with a first communications device in compliance with a first protocol. A second radio module provides a second wireless communications service and communicates with a second communications device in compliance with a second protocol. A Co-Located Coexistence radio manager detects activities of the first radio modules, obtains a first traffic pattern describing downlink and/or uplink traffic allocations of the first radio module from the first radio module, and generates a second traffic pattern of the second radio module according to the first traffic pattern to coordinate operations of the first and second radio modules. An associated method is also provided.
    Type: Application
    Filed: April 8, 2014
    Publication date: August 7, 2014
    Applicant: Media Tek Inc.
    Inventors: Chi-Chen LEE, I-Kang FU, Li-Chun KO, Hong-Kai HSU, Chih-Hao YEH, Jiun-Jang SU
  • Patent number: 8774722
    Abstract: A wireless communications system is provided with a first wireless communications and a second wireless communications. The first wireless communications module transmits or receives a first wireless signal in a first frequency band selected from a first frequency range. The second wireless communications module transmits or receives a second wireless signal in a second frequency band selected from a second frequency range, and adjusts a transmission power of the second wireless signal in response to that a frequency offset between the first frequency band and the second frequency band falls within a predetermined range.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: July 8, 2014
    Assignee: Mediatek Inc.
    Inventors: Hong-Kai Hsu, Li-Chun Ko, Chia-Ming Chang, Chih-Hao Yeh, En-Chia Hsia, I-Lin Hsieh, Wen-Ying Chien, Jwo-An Lin, Ting-Che Tseng, Yuan Chen
  • Patent number: 8730853
    Abstract: A communications apparatus is provided. A first radio module provides a first wireless communications service and communicates with a first communications device in compliance with a first protocol. A second radio module provides a second wireless communications service and communicates with a second communications device in compliance with a second protocol. A Co-Located Coexistence radio manager detects activities of the first radio modules, obtains a first traffic pattern describing downlink and/or uplink traffic allocations of the first radio module from the first radio module, and generates a second traffic pattern of the second radio module according to the first traffic pattern to coordinate operations of the first and second radio modules. The second traffic pattern describes recommended downlink and/or uplink traffic allocations to a plurality of sub-frames for the second radio module, and each sub-frame defined by the second protocol includes Orthogonal Frequency Division Multiplexing symbols.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: May 20, 2014
    Assignee: Mediatek Inc.
    Inventors: Chi-Chen Lee, I-Kang Fu, Li-Chun Ko, Hong-Kai Hsu, Chih-Hao Yeh, Jiun-Jang Su
  • Patent number: 8711823
    Abstract: An embodiment of a system for the coexistence of a wireless local area network (WLAN) and another type of wireless transmission is provided. A WLAN module in a power saving mode is configured to transmit a polling request (PS-Poll) at a supported rate higher than any basic rate in order to obtain buffered data from an access point (AP) when the coexisting wireless transmission module is operating. The supported rate is encoded in a supported rate set announced by the AP, and the basic rate is encoded in a basic rate set announced by the AP, and the PS-Poll is a polling request relating to a power saving mode of operation.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: April 29, 2014
    Assignee: Mediatek Inc.
    Inventors: Chih-Hao Yeh, Chia-Ming Chang
  • Publication number: 20120218979
    Abstract: An embodiment of a system for the coexistence of a wireless local area network (WLAN) and another type of wireless transmission is provided. A WLAN module in a power saving mode is configured to transmit a polling request (PS-Poll) at a supported rate higher than any basic rate in order to obtain buffered data from an access point (AP) when the coexisting wireless transmission module is operating. The supported rate is encoded in a supported rate set announced by the AP, and the basic rate is encoded in a basic rate set announced by the AP, and the PS-Poll is a polling request relating to a power saving mode of operation.
    Type: Application
    Filed: April 20, 2012
    Publication date: August 30, 2012
    Applicant: Media Tek Inc.
    Inventors: Chih-Hao YEH, Chia-Ming CHANG
  • Patent number: 8199709
    Abstract: A method for operating an electronic device using a first and a second communication protocols is provided. The electronic device includes an arbitrator to determine whether to communicate in accordance with the first or second communication protocol. The method estimates a period for transmitting a trigger frame by the electronic device, a period for receiving a first acknowledgement (ACK) frame by the electronic device, a period of a backoff procedure, a period for receiving a predetermined number of delivered frames by the electronic device, and a period of transmitting a second ACK frame by the electronic device. All the above estimated periods are added to be a predetermined time period. The trigger frame is transmitted to initiate the electronic device to communicate in accordance with the first communication protocol. The arbitrator determines whether to grant the electronic device to communicate in accordance with the second communication protocol based on the predetermined time period.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: June 12, 2012
    Assignee: MediaTek, Inc.
    Inventors: Jiun Jang Su, Chih Hao Yeh
  • Patent number: 8184566
    Abstract: An embodiment of a system for the coexistence of a wireless local area network (WLAN) in power saving mode, and another type of wireless transmission is provided. A wireless transmission module is configured to transmit or receive data in two slots separated by an available window. A WLAN module is configured to obtain information regarding the available window and transmits a polling request (PS-Poll) at a supported rate higher than any basic rate in the available window in order to obtain buffered data from an access point (AP). The supported rate is encoded in a supported rate set while the basic rate is encoded in a basic rate set announced by the AP.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: May 22, 2012
    Assignee: Mediatek Inc.
    Inventors: Chih-Hao Yeh, Chia-Ming Chang
  • Publication number: 20110263212
    Abstract: A wireless device includes at least a transmitter to transmit a transmitting signal; a triggering device arranged to monitor an operating status of the wireless device when the transmitter is transmitting the transmitting signal; and a controller arranged to control the transmitter to adjust a throughput of the transmitting signal when the operating status is determined to satisfy a predetermined criterion.
    Type: Application
    Filed: April 26, 2010
    Publication date: October 27, 2011
    Inventors: Chih-Hao Yeh, Jui-Ming Wei
  • Publication number: 20110096758
    Abstract: A method for enhancing throughput of a Wireless Local Area Network (WLAN) module collocated with a Bluetooth (BT) slave module includes: detecting whether timing critical data of the BT slave module exists; and allowing the WLAN module to perform wireless communication when it is detected that no timing critical data of the BT slave module exists. An associated wireless communication apparatus includes: a BT slave module; a WLAN module collocated with the BT slave module; and a controller arranged to control operations of the BT slave module and the WLAN module, wherein the controller detects whether timing critical data of the BT slave module exists, and allows the WLAN module to perform wireless communication when it is detected that no timing critical data of the BT slave module exists. An associated wireless communication module such as the BT slave module is further provided.
    Type: Application
    Filed: October 26, 2009
    Publication date: April 28, 2011
    Inventors: Li-Chun Ko, Chih-Hao Yeh, Hong-Kai Hsu, Shun-Yong Huang
  • Publication number: 20110053523
    Abstract: A wireless communications system is provided with a first wireless communications module, a second wireless communications module, and an RF module. The first wireless communications module transmits or receives a first wireless signal, and the second wireless communications module transmits or receives a second wireless signal. The RF module allocates a first transceiving path and a second transceiving path to the first wireless communications module and the second wireless communications module, respectively, to enable the transmission or reception of the first wireless signal and the second wireless signal at the same time.
    Type: Application
    Filed: November 5, 2010
    Publication date: March 3, 2011
    Applicant: MEDIATEK INC.
    Inventors: Chih-Hao Yeh, Hong-Kai Hsu, En-Chieh Hsia, Hsien-Chyi Chiou, Wei Wang, Shu-Ping Shiu