Patents by Inventor Chung Chang

Chung 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).

  • Patent number: 11736078
    Abstract: Certain aspects of the present disclosure provide methods and apparatus for amplifying an input signal. One example apparatus is a differential amplifier that includes a positive input node, a negative input node, a positive output node, a negative output node, a positive input transistor having a gate coupled to the positive input node and having a drain coupled to the negative output node, a negative input transistor having a gate coupled to the negative input node and having a drain coupled to the positive output node, a first common-gate amplifier having an output coupled to the negative output node, a second common-gate amplifier having an output coupled to the positive output node, a first capacitive element coupled between the negative input node and an input of the first common-gate amplifier, and a second capacitive element coupled between the positive input node and an input of the second common-gate amplifier.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: August 22, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Joung Won Park, Wei Zhuo, Li-chung Chang
  • Publication number: 20230261009
    Abstract: An electronic device having a peripheral area and a non-peripheral area adjacent to the peripheral area is provided. The electronic device includes a flexible substrate, a first conductive layer disposed on the flexible substrate and disposed in the peripheral area and the non-peripheral area, an organic layer disposed in the non-peripheral area and on the first conductive layer, a second conductive layer disposed on the first conductive layer, and an organic structure disposed between the first conductive layer and the second conductive layer in the peripheral area. The organic layer and the organic structure are the same material layer.
    Type: Application
    Filed: April 21, 2023
    Publication date: August 17, 2023
    Inventors: Ti-Chung CHANG, Chih-Chieh WANG, Chien-Chih CHEN
  • Publication number: 20230253479
    Abstract: In an embodiment, a method of forming a semiconductor device includes forming a dummy gate stack over a substrate; forming a first spacer layer over the dummy gate stack; oxidizing a surface of the first spacer layer to form a sacrificial liner; forming one or more second spacer layers over the sacrificial liner; forming a third spacer layer over the one or more second spacer layers; forming an inter-layer dielectric (ILD) layer over the third spacer layer; etching at least a portion of the one or more second spacer layers to form an air gap, the air gap being interposed between the third spacer layer and the first spacer layer; and forming a refill layer to fill an upper portion of the air gap.
    Type: Application
    Filed: April 18, 2023
    Publication date: August 10, 2023
    Inventors: Ming-Jhe Sie, Chen-Huang Huang, Shao-Hua Hsu, Cheng-Chung Chang, Szu-Ping Lee, An Chyi Wei, Shiang-Bau Wang, Chia-Jen Chen
  • Publication number: 20230238079
    Abstract: The present invention relates to a method and a kit, a computer-implemented method and a system for in vitro predicting survival time of an individual with bladder cancer after surgery from an individual's biological sample. Expression levels of a target gene combination of in vitro aggressive bladder cancer specimen of a patient are detected, and the target gene combination includes at least two of PPT2, ARMH4, P4HB, SLC1A6 and ARID3A, a fragment, a homologue, a variant and a derivative thereof. Next, the expression levels are respectively compared with the reference expression levels of a reference database, and converted to a risk score sum, thereby predicting an averaged survival time of a patient having aggressive bladder cancer after surgery, and being beneficially applied to a kit and a computer-implemented method for in vitro predicting survival time of patient with most aggressive types of bladder cancer after surgery.
    Type: Application
    Filed: December 27, 2022
    Publication date: July 27, 2023
    Applicant: National Sun Yat-Sen University
    Inventors: Jim Jinn-Chyuan Sheu, Chung Chang, Bo-Chen Lin, Li-Yun Yang, You-Jun Lai
  • Publication number: 20230226230
    Abstract: A compound for measurement of thiopurine pathway directed systems imaging and therapy including a chelator and a thiopurine ligand is provided. A method of synthesizing the compound is also provided, and the compound may be further prepared in pharmaceutical formulations or kits for therapy or molecular imaging.
    Type: Application
    Filed: February 26, 2021
    Publication date: July 20, 2023
    Applicant: SEECURE TAIWAN CO., LTD.
    Inventors: Wei-Chung CHANG, David J. YANG, Min-Ching CHUNG, Chi-Shiang KE, Tsung-Tien KUO
  • Patent number: 11705372
    Abstract: The embodiments described herein are directed to a method for reducing fin oxidation during the formation of fin isolation regions. The method includes providing a semiconductor substrate with an n-doped region and a p-doped region formed on a top portion of the semiconductor substrate; epitaxially growing a first layer on the p-doped region; epitaxially growing a second layer different from the first layer on the n-doped region; epitaxially growing a third layer on top surfaces of the first and second layers, where the third layer is thinner than the first and second layers. The method further includes etching the first, second, and third layers to form fin structures on the semiconductor substrate and forming an isolation region between the fin structures.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: July 18, 2023
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Hung-Ju Chou, Chih-Chung Chang, Jiun-Ming Kuo, Che-Yuan Hsu, Pei-Ling Gao, Chen-Hsuan Liao
  • Publication number: 20230204901
    Abstract: An optical element driving mechanism is provided and includes a fixed assembly, a movable assembly, a driving assembly and a circuit assembly. The movable assembly is configured to connect an optical element, the movable assembly is movable relative to the fixed assembly, and the optical element has an optical axis. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly. The circuit assembly includes a plurality of circuits and is affixed to the fixed assembly.
    Type: Application
    Filed: February 23, 2023
    Publication date: June 29, 2023
    Inventors: Sin-Hong LIN, Yung-Ping YANG, Wen-Yen HUANG, Yu-Cheng LIN, Kun-Shih LIN, Chao-Chang HU, Yung-Hsien YEH, Mao-Kuo HSU, Chih-Wei WENG, Ching-Chieh HUANG, Chih-Shiang WU, Chun-Chia LIAO, Chia-Yu CHANG, Hung-Ping CHEN, Wei-Zhong LUO, Wen-Chang LIN, Shou-Jen LIU, Shao-Chung CHANG, Chen-Hsin HUANG, Meng-Ting LIN, Yen-Cheng CHEN, I-Mei HUANG, Yun-Fei WANG, Wei-Jhe SHEN
  • Publication number: 20230194743
    Abstract: A method comprises conveying a downhole tool in a production tubing within a casing that is around a wall of a wellbore formed in a subsurface formation, wherein cement is placed in an annulus defined between the casing and the wall of the wellbore. The downhole tool includes at least one unipole receiver and a transmitter that comprises at least one of a unipole transmitter and a monopole transmitter. The transmitter and receiver are mounted on a rotatable portion of the downhole tool. The method includes performing the following operations at at least two azimuthal positions, emitting an acoustic transmission outward toward the cement and detecting an acoustic response that is in response to the acoustic transmission propagating through the production tubing and the casing and into the cement. The acoustic response includes casing extensional waves, casing non-extensional waves, and tubing waves. The method includes evaluating the cement based on the casing extensional waves.
    Type: Application
    Filed: December 20, 2021
    Publication date: June 22, 2023
    Inventors: Ruijia Wang, Yao Ge, Brenno Caetano Troca Cabella, Chung Chang, Jing Jin, Ho Yin Ma, Xiang Wu
  • Publication number: 20230187535
    Abstract: Semiconductor structures and methods for manufacturing the same are provided. The method for manufacturing the semiconductor structure includes forming a fin structure protruding from a substrate, and the fin structure includes first semiconductor material layers and second semiconductor material layers alternately stacked. The method also includes forming a dummy gate structure across the fin structure and forming a gate spacer on a sidewall of the dummy gate structure. The method also includes partially oxidizing the gate spacer to form an oxide layer and removing the oxide layer to form a modified gate spacer. The method also includes removing the first semiconductor material layers to form gaps and forming a gate structure in the gaps to wrap around the second semiconductor material layers and over the second semiconductor material layers to cover the modified gate spacer.
    Type: Application
    Filed: June 2, 2022
    Publication date: June 15, 2023
    Inventors: Yu-Jiun Peng, Hsuan-Chih Wu, Cheng-Chung Chang, Shu-Han Chen, Hsiu-Hao Tsao, Min-Chia Lee, Kai-Min Chien, Ming-Chang Wen, Kuo-Feng Yu, Chang-Jhih Syu
  • Patent number: 11676983
    Abstract: A sensor includes a first chip, a dam structure and a cover. The first chip includes a substrate, a sensing area and a low-k material layer. The sensing area is located on the surface of the substrate. The low-k material layer is located in the substrate. The dam structure is located on the first chip. The dam structure covers the edge of the low-k material layer. The cover is located on the dam structure and covers the sensing area. A manufacturing method of a sensor is also provided.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: June 13, 2023
    Assignee: Powertech Technology Inc.
    Inventors: Chung-Chang Chang, Chang-Lun Lu, Ming-Hung Lin
  • Patent number: 11675248
    Abstract: An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed part, a movable part, a driving assembly, and a sensing assembly. The movable part moves relative to the fixed part. The driving assembly drives the movable part to move relative to the fixed part. The sensing assembly senses the movement of the movable part.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: June 13, 2023
    Assignee: TDK TAIWAN CORP.
    Inventors: Yung-Ping Yang, Shao-Chung Chang
  • Publication number: 20230175391
    Abstract: The disclosure presents processes to determine the direction and magnitude of tubing eccentricity along the length of a tube inserted within a borehole. The tubing can be a wireline, a drill string, a drill pipe, or tubing capable of allowing fluid or other material to flow through it. As borehole operations proceed, the tubing can move toward the side of the borehole. This eccentricity can cause excess wear and tear on the tubing, on the casing of the borehole, or on the inner surface of the subterranean formation. The eccentricity can be measured using acoustic signals that are collected downhole covering the azimuthal angles 0° to 360° at a location in the borehole. The collected signals can be filtered, transformed, and analyzed to estimate the tubing eccentricity. Other processes and systems can use the results to obtain cement bond evaluations through tubing and to determine preventative or restorative actions.
    Type: Application
    Filed: December 6, 2021
    Publication date: June 8, 2023
    Inventors: Brenno Caetano Troca Cabella, Xiang Wu, Marco Aurelio Luzio, Pablo Vieira Rego, Chung Chang, Federico Combis Lucas, Yao Ge, Ruijia Wang, Ho Yin Ma
  • Publication number: 20230178573
    Abstract: The package structure having packaged components within includes a circuit board, multiple packaged light detecting components mounted on the circuit board, a sealing cap being light transmittable, multiple light filtering films mounted on the sealing cap, and a supporting annular wall. The two opposite ends of the supporting annular wall are adhesively bonded to the surfaces of the circuit board and the sealing cap, such that the projection on the circuit board of the light filtering films corresponds the packaged light detecting components. Since the light filtering films have different filtering frequency bands, each packaged light detecting component detects light of different frequency bands in one incident light beam. The package method is simple and stable, effectively lowering the manufacture cost of the light detecting module.
    Type: Application
    Filed: December 3, 2021
    Publication date: June 8, 2023
    Applicant: Taiwan RedEye Biomedical Inc.
    Inventors: Shuo-Ting YAN, Chen-Chung CHANG, Tsung-Jui LIN
  • Publication number: 20230165504
    Abstract: An electrocardiogram converting device includes a casing, a first connector, a chest lead connection module, and a limb lead connection module. The casing includes a first surface, a second surface, and a third surface. The first connector is installed on the first surface of the casing, the chest lead connection module is installed on the second surface of the casing, and the limb lead connection module is installed on the third surface of the casing. In addition, the second surface is perpendicular to the third surface, and the first surface is parallel to the third surface, so as to reduce a length and a volume of the electrocardiogram converting device and improve the convenience of electrocardiogram measurement.
    Type: Application
    Filed: November 30, 2022
    Publication date: June 1, 2023
    Inventors: Jui-Chung CHANG, Yu-Ting CHEN, Ying-Lung CHENG
  • Patent number: 11662496
    Abstract: Methods, systems, and program products are disclosed for implementing acoustic logging and determining wellbore material characteristics. In some embodiments, a method may include determining a polar differential signal for each of one or more pairs of azimuthally offset acoustic measurements within a wellbore. A reference azimuth is identified based, at least in part, on comparing the polar differential signals to a modeled bonding differential signal within a target response window. The method further includes determining differences between an acoustic measurement at the reference azimuth and acoustic measurements at one or more other azimuths and determining a wellbore material condition based, at least in part, on the determined differences.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: May 30, 2023
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Brenno Caetano Troca Cabella, Ruijia Wang, Chung Chang, Qingtao Sun, Yao Ge, Xiang Wu, Pablo Vieira Rego, Marco Aurelio Luzio, João Vicente Gonçalves Rocha
  • Patent number: 11665417
    Abstract: An optical mechanism is provided, including a base module, an optical element, and a ball element. The base module has a frame, a substrate movably disposed in the frame, and an image sensor disposed on the substrate. The optical element is movably connected to the base module, and light propagates through the optical element to the image sensor to generate a digital image. The ball element is disposed between the frame and the substrate, whereby the image sensor and the substrate are movable relative to the frame along a first axis that is perpendicular to an optical axis of the optical element.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: May 30, 2023
    Assignee: TDK TAIWAN CORP.
    Inventors: Chan-Jung Hsu, Shao-Chung Chang, Yi-Ho Chen
  • Patent number: 11664390
    Abstract: An electronic device is provided. The electronic device includes a supporting substrate, a flexible substrate disposed on the supporting substrate, a first conductive layer disposed on the flexible substrate, a second conductive layer disposed on the first conductive layer, a plurality of organic elements disposed between the first conductive layer and the second conductive layer, and an opening passing through the supporting substrate and exposing a portion of the flexible substrate. The first conductive layer alternately contacts the second conductive layer and the plurality of organic elements.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: May 30, 2023
    Assignee: INNOLUX CORPORATION
    Inventors: Ti-Chung Chang, Chih-Chieh Wang, Chien-Chih Chen
  • Patent number: 11662495
    Abstract: An acoustic logging tool may comprise a center load carrying pipe, a receiver module connected to the center load carrying pipe, one or more transmitter modules connected to the center load carrying pipe, and one or more mass modules connected to the center load carrying pipe.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: May 30, 2023
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Chung Chang, Qingtao Sun, Randolph S. Coles, Federico Lucas, Jr.
  • Publication number: 20230160302
    Abstract: An acoustic isolator and methods to the same. The acoustic isolator may comprise a body, one or more annular chambers formed inside the body of the acoustic isolator and positioned along a longitudinal axis of the acoustic isolator, an annular groove formed on an outer surface of the body of the acoustic isolator, and a passage disposed between the one or more annular chambers and the annular groove. The method may comprise transmitting an acoustic wave from a transmitter disposed on an acoustic logging tool into a subterranean formation, receiving an acoustic signal from the subterranean formation with a receiver disposed on the acoustic logging tool, and attenuating a second acoustic wave that moves between the transmitter and the receiver and through an acoustic isolator.
    Type: Application
    Filed: November 24, 2021
    Publication date: May 25, 2023
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Jing Jin, Chung Chang, Gary Wayne Kainer
  • Patent number: 11652155
    Abstract: In an embodiment, a method of forming a semiconductor device includes forming a dummy gate stack over a substrate; forming a first spacer layer over the dummy gate stack; oxidizing a surface of the first spacer layer to form a sacrificial liner; forming one or more second spacer layers over the sacrificial liner; forming a third spacer layer over the one or more second spacer layers; forming an inter-layer dielectric (ILD) layer over the third spacer layer; etching at least a portion of the one or more second spacer layers to form an air gap, the air gap being interposed between the third spacer layer and the first spacer layer; and forming a refill layer to fill an upper portion of the air gap.
    Type: Grant
    Filed: May 24, 2022
    Date of Patent: May 16, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Ming-Jhe Sie, Chen-Huang Huang, Shao-Hua Hsu, Cheng-Chung Chang, Szu-Ping Lee, An Chyi Wei, Shiang-Bau Wang, Chia-Jen Chen