Patents by Inventor Liu Chang

Liu Chang 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: 20240145411
    Abstract: Integrated circuit (IC) protections that prevent exposure or examination of integrated circuitry through backside analysis include a layer or mesh of an electrically conductive, electromagnetic radiation blocking material disposed over a backside of an IC device to prevent backside analysis. An electrically conductive conduit couples the material to a node of the integrated circuitry to provide a signal and/or voltage reference to the node through the layer/mesh. If the layer/mesh is tampered with, the integrated circuitry loses the voltage reference or signal thereby disabling the integrated circuitry. The IC device may include detection circuitry to monitor the node and to generate an alert and/or disable the circuitry upon tampering. The IC device may further include a support substrate, where a substrate between the material/mesh and the integrated circuitry is sufficiently thin that the IC device would be mechanically weak if the support substrate were removed.
    Type: Application
    Filed: October 31, 2022
    Publication date: May 2, 2024
    Inventors: Myongseob KIM, Henley LIU, Cheang-whang CHANG
  • Publication number: 20240145630
    Abstract: A light-emitting device includes a substrate and an epitaxial structure. The epitaxial structure includes a first semiconductor layer, an active layer, and a second semiconductor layer which are disposed on the upper surface of the substrate in such order. The substrate has a substrate edge region surrounding and exposed from the epitaxial structure. The substrate edge region includes a first substrate edge region and a second substrate edge region which is more proximate to the epitaxial structure than the first substrate edge region. The first substrate edge region has a first uneven toothed surface or an even flat surface. The second substrate edge regions are formed with second uneven toothed surfaces which have a height greater than a height of the first even toothed surface, or the even flat surface.
    Type: Application
    Filed: October 31, 2023
    Publication date: May 2, 2024
    Inventors: Minyou HE, Xiaoliang LIU, Qing WANG, Ling-Yuan HONG, Chung-Ying CHANG
  • Publication number: 20240140782
    Abstract: The present disclosure provides a semiconductor device. The semiconductor device includes a first device and a second device disposed adjacent to the first device; a conductive pillar disposed adjacent to the first device or the second device; a molding surrounding the first device, the second device and the conductive pillar; and a redistribution layer (RDL) over the first device, the second device, the molding and the conductive pillar, wherein the RDL electrically connects the first device to the second device and includes an opening penetrating the RDL and exposing a sensing area over the first device.
    Type: Application
    Filed: January 5, 2024
    Publication date: May 2, 2024
    Inventors: PO CHEN YEH, YI-HSIEN CHANG, FU-CHUN HUANG, CHING-HUI LIN, CHIAHUNG LIU, SHIH-FEN HUANG, CHUN-REN CHENG
  • Patent number: 11973302
    Abstract: The present disclosure provides a method for aligning a master oscillator power amplifier (MOPA) system. The method includes ramping up a pumping power input into a laser amplifier chain of the MOPA system until the pumping power input reaches an operational pumping power input level; adjusting a seed laser power output of a seed laser of the MOPA system until the seed laser power output is at a first level below an operational seed laser power output level; and performing a first optical alignment process to the MOPA system while the pumping power input is at the operational pumping power input level, the seed laser power output is at the first level, and the MOPA system reaches a steady operational thermal state.
    Type: Grant
    Filed: February 20, 2023
    Date of Patent: April 30, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chun-Lin Louis Chang, Henry Tong Yee Shian, Alan Tu, Han-Lung Chang, Tzung-Chi Fu, Bo-Tsun Liu, Li-Jui Chen, Po-Chung Cheng
  • Patent number: 11960573
    Abstract: Neural network-based categorization can be improved by incorporating graph neural networks that operate on a graph representing the taxonomy of the categories into which a given input is to be categorized by the neural network based-categorization. The output of a graph neural network, operating on a graph representing the taxonomy of categories, can be combined with the output of a neural network operating upon the input to be categorized, such as through an interaction of multidimensional output data, such as a dot product of output vectors. In such a manner, information conveying the explicit relationships between categories, as defined by the taxonomy, can be incorporated into the categorization. To recapture information, incorporate new information, or reemphasize information a second neural network can also operate upon the input to be categorized, with the output of such a second neural network being merged with the output of the interaction.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: April 16, 2024
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Tianchuan Du, Keng-Hao Chang, Ruofei Zhang, Paul Liu
  • Publication number: 20240113259
    Abstract: A light-emitting device includes a semiconductor epitaxial structure including a first semiconductor layer, an active layer, and a second semiconductor layer, and having holes; a first insulation layer disposed on the semiconductor epitaxial structure and having first and second grooves; a first pad electrically connected to the first semiconductor layer through the first grooves; and a second pad electrically connected to the second semiconductor layer through the second grooves. A projection of the first pad does not overlap projections of the holes. A projection of the second pad does not overlap the projections of the holes. The first pad includes a first pad connection portion and first pad extension portions; the second pad includes a second pad connection portion and second pad extension portions. Projections of the second grooves fall between projections of the first and second pad extension portions. Two other aspects of the light-emitting device are also provided.
    Type: Application
    Filed: September 28, 2023
    Publication date: April 4, 2024
    Inventors: Xiushan ZHU, Qi JING, Yan LI, Xiaoliang LIU, Zhilong LU, Chunhsien LEE, Chi-Ming TSAI, Juchin TU, Chung-Ying CHANG
  • Publication number: 20240113032
    Abstract: Interconnect structure packages (e.g., through silicon vias (TSV) packages, through interlayer via (TIV) packages) may be pre-manufactured as opposed to forming TIVs directly on a carrier substrate during a manufacturing process for a semiconductor die package at backend packaging facility. The interconnect structure packages may be placed onto a carrier substrate during manufacturing of a semiconductor device package, and a semiconductor die package may be placed on the carrier substrate adjacent to the interconnect structure packages. A molding compound layer may be formed around and in between the interconnect structure packages and the semiconductor die package.
    Type: Application
    Filed: April 25, 2023
    Publication date: April 4, 2024
    Inventors: Kai-Fung CHANG, Chin-Wei LIANG, Sheng-Feng WENG, Ming-Yu YEN, Cheyu LIU, Hung-Chih CHEN, Yi-Yang LEI, Ching-Hua HSIEH
  • Patent number: 11944814
    Abstract: A wireless implant and associated system for motor function recovery after spinal cord injury, and more particularly a multi-channel wireless implant with small package size. The wireless implant can further be used in various medical applications, such as retinal prostheses, gastrointestinal implant, vagus nerve stimulation, and cortical neuromodulation. The system also includes a method and its implementation to acquire the impedance model of the electrode-tissue interface of the implant.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: April 2, 2024
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Yi-Kai Lo, Wentai Liu, Victor R. Edgerton, Chih-Wei Chang
  • Patent number: 11943643
    Abstract: An access point (AP) and a station (STA) communicate with each other, with the AP indicating to the STA either or both of a preamble detection (PD) channel and a signaling (SIG) content channel and with the STA being initially monitoring a primary frequency segment of a plurality of frequency segments in an operating bandwidth of the AP. A downlink (DL) or triggered uplink (UL) communication is performed between the AP and the STA during a transmission opportunity (TXOP) such that: (i) during the TXOP, the STA monitors a preamble on the PD channel and decodes a SIG content on the SIG content channel; and (ii) after an end of the TXOP, the STA switches to the primary frequency segment.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: March 26, 2024
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Kai Ying Lu, Yongho Seok, Hung-Tao Hsieh, Cheng-Yi Chang, James Chih-Shi Yee, Jianhan Liu, Po-Yuen Cheng
  • Publication number: 20240097661
    Abstract: A scan flip-flop circuit includes a selection circuit including first and second input terminals coupled to first and second I/O nodes, a flip-flop circuit coupled to the selection circuit, a first driver coupled between the flip-flop circuit and the first I/O node, and a second driver coupled between the flip-flop circuit and the second I/O node. The selection circuit and drivers receive a scan direction signal. In response to a first logic level of the scan direction signal, the selection circuit responds to a first signal received at the first input terminal, and the second driver outputs a second signal responsive to a flip-flop circuit output signal. In response to a second logic level of the scan direction signal, the selection circuit responds to a third signal received at the second input terminal, and the first driver outputs a fourth signal responsive to the flip-flop circuit output signal.
    Type: Application
    Filed: January 9, 2023
    Publication date: March 21, 2024
    Inventors: Huaixin XIAN, Tzu-Ying LIN, Liu HAN, Jerry Chang Jui KAO, Qingchao MENG, Xiangdong CHEN
  • Publication number: 20240088327
    Abstract: A light emitting device includes a light-emitting laminate and an insulating reflective structure. The insulating reflective structure includes n pairs of dielectric layers stacked on the light-emitting laminate. Each of the n pairs of dielectric layers includes a first material layer and a second material layer. The first material layer has a first refractive index, and the second material layer has a second refractive index that is greater than the first refractive index of the first material layer. For each pair of dielectric layers among m1 pairs of dielectric layers out of the n pairs of dielectric layers, the first material layer has an optical thickness that is greater than that of the second material layer, where 0.5n?m1?n, and n and m1 are natural numbers greater than 0.
    Type: Application
    Filed: November 15, 2023
    Publication date: March 14, 2024
    Inventors: Shiwei LIU, Jin XU, Baojun SHI, Shuijie WANG, Ke LIU, Chung-ying CHANG
  • Patent number: 11919284
    Abstract: A rotary seat including a base includes an outer surface, and a composite material layer attached to at least a part of the outer surface. The base also includes a recess for accommodating a turntable and including a first opening on the outer surface. The material of the composite material layer includes fibers and a resin. Therefore, the rotary seat may be more lightweight. A rotary table is also provided and includes the rotary seat, a driving device which drives the rotary seat to rotate, and a turntable which is rotatably disposed in the recess of the base.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: March 5, 2024
    Assignee: Hiwin Technologies Corp.
    Inventors: Yung-Tsai Chuo, Yaw-Zen Chang, Jui-Che Lin, Yu-Hsien Ho, Yu Liu
  • Patent number: 9016856
    Abstract: A temple assembly of a pair of eyeglasses is coupled to a frame body without screws. The temple assembly of eyeglasses includes a first connecting member and a second connecting member. The first connecting member includes a lever arm portion and a latching portion extended by the lever arm portion along the direction distal from said frame body. The second connecting member includes an elastic portion and an engaging portion extended by the elastic portion along the direction distal from the frame body; wherein the latching portion detachably coupled to the engaging portion, the elastic portion approached elastically to the lever arm portion. Thereby, an end piece of the frame body is rotatably coupled between the lever arm portion and the elastic portion.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: April 28, 2015
    Assignee: Action Eyewear Corp.
    Inventor: Tuo-Liu Chang
  • Publication number: 20140247421
    Abstract: A temple assembly of a pair of eyeglasses is coupled to a frame body without screws. The temple assembly of eyeglasses includes a first connecting member and a second connecting member. The first connecting member includes a lever arm portion and a latching portion extended by the lever arm portion along the direction distal from said frame body. The second connecting member includes an elastic portion and an engaging portion extended by the elastic portion along the direction distal from the frame body; wherein the latching portion detachably coupled to the engaging portion, the elastic portion approached elastically to the lever arm portion. Thereby, an end piece of the frame body is rotatably coupled between the lever arm portion and the elastic portion.
    Type: Application
    Filed: July 22, 2013
    Publication date: September 4, 2014
    Applicant: ACTION EYEWEAR CORP.
    Inventor: TUO-LIU CHANG
  • Patent number: 8317103
    Abstract: Method for broadcasting a magnetic stripe data packet from an electronic card by measuring a swipe speed of the electronic card past a magnetic reader head during a swipe of the electronic card past the magnetic reader head and then adjusting a broadcast signal containing the magnetic stripe data packet according to the measured swipe speed so that the magnetic stripe data packet in the broadcast signal is read by the magnetic reader head during said swipe. The swipe speed is measured by either an active speed sensor or a passive pressure/force speed sensor such as a quantum tunneling composite.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: November 27, 2012
    Assignee: FiTeq
    Inventors: Eric Foo, Wong Chee Weng, Liu Chang
  • Patent number: 8226001
    Abstract: Method for broadcasting a magnetic stripe data packet from an electronic card by measuring a swipe speed of the electronic card past a magnetic reader head during a swipe of the electronic card past the magnetic reader head and then adjusting a broadcast signal containing the magnetic stripe data packet according to the measured swipe speed so that the magnetic stripe data packet in the broadcast signal is read by the magnetic reader head during said swipe. The swipe speed is measured by a speed sensor such as a capacitive sensor having an outer detection point and an inner detection point.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: July 24, 2012
    Assignee: Fiteq, Inc.
    Inventors: Eric Foo, Wong Chee Weng, Liu Chang, Lakshmisha Honnegowda
  • Patent number: 8201094
    Abstract: An approach is provided for performing collaborative graphical creation. It is determined that a plurality of modifications are made within a collaborative environment to an area of an image. The modifications are initiated by a plurality of members of a social network service. A conflict rule specified by the social network service is retrieved. One of the modifications is selected based on the conflict rule.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: June 12, 2012
    Assignee: Nokia Corporation
    Inventors: Hao Wang, Kun Yu, Liu Chang
  • Patent number: 8142013
    Abstract: A glasses structure includes a frame, two temple arms and a bridge. The frame has two end portions arranged at lateral sides thereof and a middle portion connecting the two end portions. Each temple has a elastic engagement member at a front end thereof for clamping the respective end portion of the frame. The bridge has a elastic clip member clamping the middle portion of the frame. Therefore, the temple arms and the bridge could link to the frame without screw members.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: March 27, 2012
    Inventor: Tuo-Liu Chang
  • Publication number: 20110222018
    Abstract: A glasses structure includes a frame, two temple arms and a bridge. The frame has two end portions arranged at lateral sides thereof and a middle portion connecting the two end portions. Each temple has a elastic engagement member at a front end thereof for clamping the respective end portion of the frame. The bridge has a elastic clip member clamping the middle portion of the frame. Therefore, the temple arms and the bridge could link to the frame without screw members.
    Type: Application
    Filed: June 17, 2010
    Publication date: September 15, 2011
    Inventor: TUO-LIU CHANG
  • Patent number: D1020786
    Type: Grant
    Filed: April 14, 2023
    Date of Patent: April 2, 2024
    Assignee: GOOGLE LLC
    Inventors: Ramachandran Ramaswamy, Daniel Sim, Jason Gouliard, Lilu Xu, Umesh Unnikrishan, Amit Chandak, Francois Toit Spies, Xi Liu, Jen-Feng Chang, Jamey Lorine Robnett-Conover, Sharon Lee