Patents by Inventor Gang Chang

Gang 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: 20240162318
    Abstract: A thin film transistor includes a gate electrode embedded in an insulating layer that overlies a substrate, a gate dielectric overlying the gate electrode, an active layer comprising a compound semiconductor material and overlying the gate dielectric, and a source electrode and drain electrode contacting end portions of the active layer. The gate dielectric may have thicker portions over interfaces with the insulating layer to suppress hydrogen diffusion therethrough. Additionally or alternatively, a passivation capping dielectric including a dielectric metal oxide material may be interposed between the active layer and a dielectric layer overlying the active layer to suppress hydrogen diffusion therethrough.
    Type: Application
    Filed: January 26, 2024
    Publication date: May 16, 2024
    Inventors: Min-Kun DAI, Wei-Gang CHIU, I-Cheng CHANG, Cheng-Yi WU, Han-Ting TSAI, Tsann LIN, Chung-Te LIN
  • Publication number: 20240119147
    Abstract: A method in one embodiment creates a model of an authentic IC for use in comparisons with counterfeit ICs. The model can be created by determining a first or initial set of points of interest (POIs) on the simulated physical (e.g., gate level) layout and simulating side channel leakage from each POI and then expanding the size of the POI and repeating the simulation and comparing successive simulation results (between successive sizes of POIs for a given POI) to determine if a solution for the size of the POI has converged. The final POIs are then processed in a simulation that can use multiple payloads (e.g., cryptographic data) over the entire set of final POIs, and the resulting data set can be used to create the model.
    Type: Application
    Filed: December 18, 2023
    Publication date: April 11, 2024
    Inventors: Deqi Zhu, Hua Chen, Jimin Wen, Lang Lin, Norman Chang, Dinesh Selvakumaran, Gang Ni
  • Publication number: 20240096781
    Abstract: A package structure including a semiconductor die, a redistribution circuit structure and an electronic device is provided. The semiconductor die is laterally encapsulated by an insulating encapsulation. The redistribution circuit structure is disposed on the semiconductor die and the insulating encapsulation. The redistribution circuit structure includes a colored dielectric layer, inter-dielectric layers and redistribution conductive layers embedded in the inter-dielectric layers. The electronic device is disposed over the colored dielectric layer and electrically connected to the redistribution circuit structure.
    Type: Application
    Filed: March 20, 2023
    Publication date: March 21, 2024
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chun-Ti Lu, Hao-Yi Tsai, Chia-Hung Liu, Yu-Hsiang Hu, Hsiu-Jen Lin, Tzuan-Horng Liu, Chih-Hao Chang, Bo-Jiun Lin, Shih-Wei Chen, Hung-Chun Cho, Pei-Rong Ni, Hsin-Wei Huang, Zheng-Gang Tsai, Tai-You Liu, Po-Chang Shih, Yu-Ting Huang
  • Patent number: 11935935
    Abstract: A thin film transistor includes a gate electrode embedded in an insulating layer that overlies a substrate, a gate dielectric overlying the gate electrode, an active layer comprising a compound semiconductor material and overlying the gate dielectric, and a source electrode and drain electrode contacting end portions of the active layer. The gate dielectric may have thicker portions over interfaces with the insulating layer to suppress hydrogen diffusion therethrough. Additionally or alternatively, a passivation capping dielectric including a dielectric metal oxide material may be interposed between the active layer and a dielectric layer overlying the active layer to suppress hydrogen diffusion therethrough.
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: March 19, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Min-Kun Dai, Wei-Gang Chiu, I-Cheng Chang, Cheng-Yi Wu, Han-Ting Tsai, Tsann Lin, Chung-Te Lin
  • Patent number: 11911513
    Abstract: Disclosed are a controlled-release dosage form with an absorption window in the upper gastrointestinal tract and a preparation method therefor, wherein the controlled-release dosage form comprises a controlled-release platform and a retention platform. The controlled-release platform is a pharmaceutical composition comprising a tablet core and a coating membrane; and the retention platform holds the controlled-release platform in the oral cavity. The operation steps of the controlled-release dosage form are as follows: placing the controlled-release platform in the retention platform, and fixing the retention platform on matching teeth in the oral cavity; taking out the controlled-release dosage form after 4-24 hours and replacing same with a new controlled-release platform; and re-fixing the retention platform on the matching teeth in the oral cavity to achieve the sustained and stable release of drugs.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: February 27, 2024
    Assignee: SHANGHAI WD PHARMACEUTICAL CO., LTD
    Inventors: Liang Chang Dong, Xishan Chen, Jingmin Shi, Danyong Zhang, Gang Wu
  • Patent number: 11201254
    Abstract: A (GaMe)2O3 ternary alloy material, its preparation method and application in a solar-blind ultraviolet photodetector are provided. The (GaMe)2O3 ternary alloy material of the present invention is formed by solid solution of Ga2O3 and Me2O3 in a molar ratio of 99:1 to 50:50, wherein the Me is any one of Lu, Sc, or Y. The (GaMe)2O3 ternary alloy material of the present invention can be used to prepare the active layer of a solar-blind ultraviolet photodetector. In the present invention, the band gap of Me2O3 is higher than that of Ga2O3, and Ga3+ ions in Ga2O3 are partially replaced by Me3+ ions to obtain a higher band gap (GaMe)2O3 ternary alloy material to reduce the dark current of the device and promote the blue shift of the cut-off wavelength to within 280 nm.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: December 14, 2021
    Assignee: HUBEI UNIVERSITY
    Inventors: Yunbin He, Mingkai Li, Pan Huang, Qile Wang, Yinmei Lu, Gang Chang, Pai Li
  • Patent number: 11087434
    Abstract: An image processing apparatus and an image processing method are provided. The image processing apparatus includes a first memory, a plurality of image processing circuits, a first image processing circuit and dithering circuit. The first memory is utilized for storing an input frame. The image processing circuits are utilized for sequentially performing respective image processing operations on the input frame to generate a first intermediate frame. The first image processing circuit is utilized for performing a first image processing operation on the first intermediate frame to generate a second intermediate frame and writing the second intermediate frame into the first memory. The dithering circuit is utilized for performing a dithering operation on the second intermediate frame transmitted from the first image processing circuit to generate a first output frame and performing the dithering operation on the second intermediate frame read from the first memory to generate a second output frame.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: August 10, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Hua-Gang Chang, Chun-Wei Lu, Yu-Hsiung Yin
  • Patent number: 11030928
    Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: June 8, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
  • Patent number: 11004389
    Abstract: A panel control device and an operation method thereof are provided. The panel control device includes a display port and a control circuit. The display port receives video data from a former stage device. The control circuit performs an anti-burn-in process on the video data according to a processing degree. After the former stage device issues a panel self-refresh entering command to the panel control device, the panel control device enters a panel self-refresh mode, and the control circuit increases the processing degree according to the panel self-refresh entering command, so as to perform the anti-burn-in process on the video data according to the increased processing degree.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: May 11, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventor: Hua-Gang Chang
  • Publication number: 20210035498
    Abstract: A panel control device and an operation method thereof are provided. The panel control device includes a display port and a control circuit. The display port receives video data from a former stage device. The control circuit performs an anti-burn-in process on the video data according to a processing degree. After the former stage device issues a panel self-refresh entering command to the panel control device, the panel control device enters a panel self-refresh mode, and the control circuit increases the processing degree according to the panel self-refresh entering command, so as to perform the anti-burn-in process on the video data according to the increased processing degree.
    Type: Application
    Filed: July 30, 2019
    Publication date: February 4, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventor: Hua-Gang Chang
  • Publication number: 20200388242
    Abstract: A timing controller device disposed in an electronic device is provided. The timing controller device includes a non-volatile memory and a timing controller. The non-volatile memory includes a plurality of storage blocks. The timing controller is coupled to the plurality of storage blocks. The timing controller writes the latest data to one of the plurality of storage blocks by turns according to a recording period. After the electronic device is powered off, the timing controller reloads the latest data stored in the plurality of storage blocks. In addition, a data reading-writing method is also provided.
    Type: Application
    Filed: June 5, 2019
    Publication date: December 10, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Hua-Gang Chang, Cheng-Hao Lin
  • Publication number: 20200365081
    Abstract: A timing controller device including a processor device and at least one storage device is provided. The processor device is configured to perform a data counting operation on a first image data according to a first look-up table to obtain a decay factor data and perform a compensation operation on a second image data according to the decay factor data and a second look-up table to obtain the first image data. The at least one storage device is configured to store different parts of the decay factor data. The processor device respectively stores the different parts of the decay factor data to the at least one storage device. A method for compensating an image data is also provided.
    Type: Application
    Filed: May 16, 2019
    Publication date: November 19, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Hua-Gang Chang, Chen-Ming Nien
  • Publication number: 20200287067
    Abstract: A (GaMe)2O3 ternary alloy material, its preparation method and application in a solar-blind ultraviolet photodetector are provided. The (GaMe)2O3 ternary alloy material of the present invention is formed by solid solution of Ga2O3 and Me2O3 in a molar ratio of 99:1 to 50:50, wherein the Me is any one of Lu, Sc, or Y. The (GaMe)2O3 ternary alloy material of the present invention can be used to prepare the active layer of a solar-blind ultraviolet photodetector. In the present invention, the band gap of Me2O3 is higher than that of Ga2O3, and Ga3+ ions in Ga2O3 are partially replaced by Me3+ ions to obtain a higher band gap (GaMe)2O3 ternary alloy material to reduce the dark current of the device and promote the blue shift of the cut-off wavelength to within 280 nm.
    Type: Application
    Filed: April 22, 2020
    Publication date: September 10, 2020
    Inventors: Yunbin He, Mingkai Li, Pan Huang, Qile Wang, Yinmei Lu, Gang Chang, Pai Li
  • Patent number: 10720106
    Abstract: A driving apparatus for driving a display panel including a connection pad, a selecting circuit, a data driving circuit and a detection circuit is provided. The selecting circuit is electrically connected to a data line of the display panel through the connection pad. The data driving circuit outputs a data voltage to a pixel circuit of the display panel through the selecting circuit and the connection pad in a display stage. The detection circuit provides a detection signal to a light-emitting element of the pixel circuit through the selecting circuit and the connection pad in a detection stage, and detects a resultant signal with respect to an electric characteristic of the light-emitting element of the pixel circuit in the detection stage.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: July 21, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Hua-Gang Chang, Shang-I Liu
  • Publication number: 20200152104
    Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.
    Type: Application
    Filed: January 16, 2020
    Publication date: May 14, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
  • Patent number: 10621924
    Abstract: The invention provides a display panel driving circuit and a method for capturing error information thereof. The display panel driving circuit includes a driving circuit, a pixel circuit and a timing controller circuit. The method includes: obtaining LED error information indicating errors caused by an LED of the pixel circuit; driving the LED by the drive circuit to obtain LED and driving circuit error information; obtaining driving circuit error information according to the two error information. The timing controller circuit records the error information and compensates LED attenuation by using the error information.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: April 14, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Hua-Gang Chang, Kuei-Chung Chang
  • Patent number: 10615136
    Abstract: A manufacturing process for a micro-device panel including the following steps is provided. A plurality of micro-device sets are formed on a transferring substrate, and each of the plurality of micro-device sets has at least one micro-device. A plurality of receiving blocks are provided. The plurality of micro-device sets are respectively transferred from the transferring substrate onto the plurality of receiving blocks to form a plurality of building blocks by a transfer head. The plurality of building blocks are placed on a receiving substrate. Finally, the adjacent building blocks on the receiving substrate are connected by a plurality of connecting devices to form the micro-device panel.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: April 7, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Sheng-Tien Cho, Hua-Gang Chang
  • Patent number: 10586480
    Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: March 10, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
  • Publication number: 20200005694
    Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.
    Type: Application
    Filed: September 10, 2019
    Publication date: January 2, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
  • Patent number: 10482820
    Abstract: A method of compensating luminance of an organic light-emitting diode (OLED) operated with a transistor in a pixel cell of a display panel includes measuring a first parameter of the transistor and a parameter of the OLED, and generating a lookup table accordingly; converting original display data to target display data according to the lookup table; outputting the target display data to the pixel cell; and compensating a second parameter of the transistor when the target display data is received by the pixel cell.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: November 19, 2019
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chun-Chieh Lin, Hua-Gang Chang, Hsueh-Yen Yang, Shang-Yu Su, Feng-Ting Pai