Patents by Inventor Che-Chia Chang

Che-Chia 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: 9030399
    Abstract: A gate driver for driving a TFT-LCD panel includes a number of gate-driver circuits arranged in groups and stages. Each gate-driver circuit has a main driver and an output section. The main driver is used to provide a charging signal to the output section which has two or more output circuits. Each of the output circuits is configured to provide a gate-line signal in response to the charging signal and a clock signal. The gate-driver circuit uses fewer switching elements, such as thin-film transistors, than the conventional circuit. When the gate driver is integrated in a TFT-LCD display panel and disposed within the periphery area around the display area, it is desirable to reduce or minimize the number of switching elements in the gate driver so that the periphery area can be reduced.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: May 12, 2015
    Assignee: AU Optronics Corporation
    Inventors: Chien-Chang Tseng, Kuang-Hsiang Liu, Sheng-Chao Liu, Che-Chia Chang, Ling-Ying Chien
  • Publication number: 20150108483
    Abstract: A display panel includes a first substrate structure, a second substrate structure and a non-self-luminous display medium layer. The first substrate structure includes a first substrate, a first common electrode, a pixel electrode and a first alignment film. The second substrate structure is disposed opposite to the first substrate structure. The second substrate structure includes a second substrate, a second common electrode and a second alignment film. The non-self-luminous display medium layer is interposed between the first alignment film and the second alignment film. A first capacitance is formed between the first common electrode and the pixel electrode, a second capacitance is formed between the pixel electrode and the second common electrode, and a ratio of the second capacitance to the first capacitance is substantially between 0.7 and 1.3.
    Type: Application
    Filed: August 13, 2014
    Publication date: April 23, 2015
    Inventors: Seok-Lyul Lee, Yi-Ching Chen, Che-Chia Chang, Chin-An Tseng, Yu-Chieh Kuo
  • Patent number: 8786815
    Abstract: A display panel having a display region and a non-display region is provided. The display panel includes a plurality of pixel structures in the display region, and each pixel structure includes a scan line, a data line, a first active device, a pixel electrode, a first insulating layer, a capacitor electrode, and a second insulating layer. The first active device includes a first gate, a first channel, a first source, and a first drain. The second insulating layer covers the first insulating layer and the capacitor electrode and is located between the capacitor electrode and the first drain. At least one driving circuit is disposed in the non-display region and includes at least one second active device. Hence, a relatively thin insulating layer can be disposed between the capacitor electrode and the drain to reduce the area of the capacitor region and to achieve a desired aperture ratio.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: July 22, 2014
    Assignee: Au Optronics Corporation
    Inventors: Chih-Hung Lin, Wu-Liu Tsai, Chuan-Sheng Wei, Che-Chia Chang, Sheng-Chao Liu, Yu-Cheng Chen, Yi-Hui Li, Maw-Song Chen
  • Publication number: 20130222357
    Abstract: A gate driver for driving a TFT-LCD panel includes a number of gate-driver circuits arranged in groups and stages. Each gate-driver circuit has a main driver and an output section. The main driver is used to provide a charging signal to the output section which has two or more output circuits. Each of the output circuits is configured to provide a gate-line signal in response to the charging signal and a clock signal. The gate-driver circuit uses fewer switching elements, such as thin-film transistors, than the conventional circuit. When the gate driver is integrated in a TFT-LCD display panel and disposed within the periphery area around the display area, it is desirable to reduce or minimize the number of switching elements in the gate driver so that the periphery area can be reduced.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 29, 2013
    Inventors: Chien-Chang TSENG, Kuang-Hsiang LIU, Sheng-Chao LIU, Che-Chia CHANG, Ling-Ying CHIEN
  • Publication number: 20130075766
    Abstract: A thin film transistor device, disposed on a substrate, includes a gate electrode, a semiconductor channel layer, a gate insulating layer disposed between the gate electrode and the semiconductor channel layer, a source electrode and a drain electrode disposed at two opposite sides of the semiconductor channel layer and partially overlapping the semiconductor channel layer, respectively, a capacitor electrode at least partially overlapping the gate electrode, and a capacitor dielectric layer disposed between the capacitor electrode and the gate electrode. The capacitor electrode, the gate electrode and the capacitor dielectric layer form a capacitor device.
    Type: Application
    Filed: April 16, 2012
    Publication date: March 28, 2013
    Inventors: Che-Chia Chang, Sheng-Chao Liu, Wu-Liu Tsai, Chuan-Sheng Wei, Chih-Hung Lin
  • Publication number: 20120092240
    Abstract: An active device, a pixel structure, and a display panel are provided. The pixel structure includes a scan line, a data line, an active device, a first insulating layer, a pixel electrode, a capacitor electrode, and a second insulating layer. The active device includes a gate, a channel, a source, and a drain. The gate is electrically connected to the scan line. The source is electrically connected to the data line. The first insulating layer is disposed between the gate and the channel. The pixel electrode is electrically connected to the drain. The capacitor electrode is located on the first insulating layer. The second insulating layer is located between the capacitor electrode and the drain.
    Type: Application
    Filed: December 19, 2011
    Publication date: April 19, 2012
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Chih-Hung Lin, Wu-Liu Tsai, Chuan-Sheng Wei, Che-Chia Chang, Sheng-Chao Liu, Yu-Cheng Chen, Yi-Hui Li, Maw-Song Chen
  • Publication number: 20080050970
    Abstract: The present invention provides a cable connector comprising an insulating body; a plurality of conductive contacts arranged in the insulating body along a front to back direction; a cable with a plurality of conductive cores is fixed on the conductive contacts; and a metal shell fastened and surrounded on the outer of the insulating body, the metal shell having a pair of symmetric protrusions with the insulating body along the front to back direction, therefore, excellent fixation and electrical connection are formed between the cable connector and the mating connector.
    Type: Application
    Filed: August 1, 2007
    Publication date: February 28, 2008
    Inventor: Che-Chia Chang
  • Publication number: 20080050968
    Abstract: The present invention provides a cable connector for connecting a mating connector, said cable connector comprising an insulating body, a plurality of signal contacts arranged in the insulating body, a ground element extend to a plurality of ground contacts interposed between each pair of signal contacts in the insulating body respectively, a cable having a plurality of conductive cores that are fixed to said signal contacts, a metal shell fastened and surrounded on the outer of the insulating body, a holding element for holding the ground element, the cable, and the metal shell and a jacket covering the back end of the insulating body, the metal shell and the front end of the cable, wherein the metal shell forms a pair of symmetric protrusions. Therefore, excellent fixation and electrical connection are formed between the cable connector with metal shell and the mating connector.
    Type: Application
    Filed: August 1, 2007
    Publication date: February 28, 2008
    Inventor: Che-Chia Chang
  • Patent number: 7182622
    Abstract: An electrical connector assembly includes two electrical connectors locking to each other to form electrical connection. One of the electrical connectors provides a holding element having a press section and at least a latch protrusion with a contact baffle wall. The other is a mating electrical connector provides an locking groove to buckle with the latch protrusion and a lateral side of the locking groove and the contact baffle wall. Hence, the contact baffle wall will contact one lateral side of the locking groove steadily without the moment of force from the flexibility of the slit rib for increasing endurance of the operations of inserting and detaching with the lock of a mating electrical connector.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: February 27, 2007
    Assignee: Comax Technology Inc
    Inventor: Che-Chia Chang
  • Patent number: 7121890
    Abstract: A cable connector comprises a circuit board and a cable. The circuit board comprises a plurality of parallel and separated first and second conductive paths with a ground area alternatively arranged between on either surface. The cable comprises a plurality of transmission channels electrically connecting to the first and second conductive paths. The intervals of the transmission channels of the cable are respectively equal to the intervals of the conductive paths, thus providing better matching impedance and efficiency.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: October 17, 2006
    Assignee: Comax Technology Inc.
    Inventor: Che-Chia Chang
  • Publication number: 20060207784
    Abstract: A signal transmission cable comprises a plurality of transmission channels adhesively covered with a first conductive shielding unit respectively . Each transmission channel comprises a pair of signal lines t, which each has a conductor electrically connected to each of the terminals of an electrical connector respectively, and an insulation medium covered and insulating each conductor therein. Then, all the first conductive shielding and the insulation medium of naked signal lines adhesively covered by a second conductive shielding unit for shielding guiding electromagnetic noise to the ground completely. Thus, all voltage noise outside the insulation medium of each section of the transmission channels are capable of being gathered and guided outward through the grounding area with equally short distances.
    Type: Application
    Filed: October 24, 2005
    Publication date: September 21, 2006
    Inventor: Che-Chia Chang
  • Publication number: 20060199434
    Abstract: A cable connector comprises a circuit board and a cable. The circuit board comprises a plurality of parallel and separated first and second conductive paths with a ground area alternatively arranged between on either surface. The cable comprises a plurality of transmission channels electrically connecting to the first and second conductive paths. The intervals of the transmission channels of the cable are respectively equal to the intervals of the conductive paths, thus providing better matching impedance and efficiency.
    Type: Application
    Filed: October 24, 2005
    Publication date: September 7, 2006
    Inventor: Che-Chia Chang
  • Publication number: 20060199418
    Abstract: An electrical connector assembly includes two electrical connectors locking to each other to form electrical connection. One of the electrical connectors provides a holding element having a press section and at least a limit guiding opening with a contact baffle wall. The other is a mating electrical connector provides an locking groove to buckle with the limit guiding opening and a lateral side of the locking groove and the contact baffle wall. Hence, the contact baffle wall will contact one lateral side of the locking groove steadily without the moment of force from the flexibility of the slit rib for increasing endurance of the operations of inserting and detaching with the lock of a mating electrical connector.
    Type: Application
    Filed: December 23, 2005
    Publication date: September 7, 2006
    Inventor: Che-Chia Chang
  • Patent number: 7052321
    Abstract: The present invention is related to an assembly structure for a high frequency connector, which is mainly formed by two interior connectors stacked, wherein each connector is connected between the transmission conductive paths of a printed circuit board and separated to form a conductive shielding layer, wherein the printed circuit board comprises at least four layers, the top and bottom surface, two connectors and a controller form a first transmission path and a second transmission path, and forms a grounding layer in an intermediate layer of the printed circuit board to shield the first transmission path and the second transmission path, thereby preventing the interference from when two connectors simultaneously transmit high frequency signal so that makes the layout of the circuit more easier and can improve the high frequency impedance and its relative variables.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: May 30, 2006
    Assignee: Comax Technology Inc.
    Inventor: Che-Chia Chang
  • Publication number: 20060084319
    Abstract: The present invention is related to an assembly structure for a high frequency connector, which is mainly formed by two interior connectors stacked, wherein each connector is connected between the transmission conductive paths of a printed circuit board and separated to form a conductive shielding layer, wherein the printed circuit board comprises at least four layers, the top and bottom surface, two connectors and a controller form a first transmission path and a second transmission path, and forms a grounding layer in an intermediate layer of the printed circuit board to shield the first transmission path and the second transmission path, thereby preventing the interference from when two connectors simultaneously transmit high frequency signal so that makes the layout of the circuit more easier and can improve the high frequency impedance and its relative variables.
    Type: Application
    Filed: October 18, 2004
    Publication date: April 20, 2006
    Inventor: Che-Chia Chang
  • Publication number: 20050101184
    Abstract: An electrical connection interface is disclosed to include a holder frame mounted in the case of a host system, a first electrical connector mounted inside the holder frame, and having a first connecting terminal, a second connecting terminal formed integral with one side of the first connecting terminal, a signal cable connecting the first connecting terminal to the signal connector of the host system, and a power cable connecting the second connecting terminal to the power connector of the host system, and a second electrical connector installed in a mobile data storage device for connecting to the first electrical connector to electrically connect the mobile data storage device to the host system upon insertion of the mobile data storage device into the holder frame inside the case of the host system.
    Type: Application
    Filed: January 28, 2005
    Publication date: May 12, 2005
    Applicant: COMAX TECHNOLOGY INC.
    Inventors: Che-Chia Chang, Allen Lin
  • Patent number: 6866539
    Abstract: A high frequency connector is used for connecting with a high frequency transmission cable as to offer a function of transmitting signal of an electric appliance. The high frequency connector includes an insulation body with multiple terminal therein, a metal inner covering disposed at outer side of the insulation body and a jacket disposed at the outermost side of the connector. The terminals are electrically connected to the cable and the inner cover at an end thereof has a locating device for holding the cable. The locating device is provided with an engaging device so as to retain and hold the cable at a preset position without loosening and swaying such that both high frequency characteristics and integral strength of the connector can be enhanced.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: March 15, 2005
    Assignee: Comax Technology Inc.
    Inventor: Che-Chia Chang
  • Patent number: 6827598
    Abstract: An integrated circuit connector for a integrated circuit being connected to a circuit board primarily includes a base inserted with terminals, a restrained cover, which is capable of moving horizontally relative to the base, a drive device, which is disposed between the base and the cover and can actuate the base to move relative to the cover, and a locating device, which is arranged to attach to the cover, the base and the drive device to restrain vertical positions of the cover, the base and the drive device so that it is possible to prevent the cover and the base from loosening and to keep the rotational shaft of the drive device in place.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: December 7, 2004
    Assignee: Comax Technology Inc.
    Inventor: Che-Chia Chang
  • Publication number: 20040242064
    Abstract: An electrical connecting interface of a removable data storage device is described. The electrical connecting interface electrically connecting a data storage unit with a host computer has an electrical connector disposed on a fixing unit of the removable data storage device. The electrical connector has cables to electrically connect with the host computer directly. Therefore, the electrical connecting interface improves electrical connection quality of the removable data storage device and the host computer by way of the direct electrical connection for transmitting data and power without any other interface requirement.
    Type: Application
    Filed: August 13, 2003
    Publication date: December 2, 2004
    Inventors: Che-Chia Chang, Allen Lin
  • Patent number: 6821165
    Abstract: A set of contact pins in an electric connector are electrically coupled to another set of contact pins in an opposite connector and joined to a set of core wires in a cable. Each of the contact pins includes a coupling end and a wire connecting end. The coupling is corresponding to the opposite connector and provided with a contact part and the wire connecting end is corresponding to the core wires and provided with a wire connecting part. The wire connecting part is arranged an elastic holding device to retain one of the core wires instead of by way of soldering.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: November 23, 2004
    Assignee: Comax Technology Inc.
    Inventor: Che-Chia Chang