Patents by Inventor Chun-Huan Chang
Chun-Huan 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: 9437130Abstract: A display panel includes a display area, a shift register circuit, a first start signal line, and a second start signal line. The shift register circuit is electrically coupled to the display area through a plurality of signal output lines. The first start signal line and the second start signal line are electrically coupled to the shift register circuit. The first start signal line and the second start signal line are both arranged without crossing the signal output lines.Type: GrantFiled: July 7, 2014Date of Patent: September 6, 2016Assignee: AU OPTRONICS CORPORATIONInventors: Wei-Li Lin, Yi-Suei Liao, Chun-Huan Chang
-
Patent number: 9287001Abstract: A shift register circuit includes a first pull-down control circuit, a first pull-down circuit electrically connecting to the first pull-down control circuit, a first inversed pulse signal coupling circuit outputting a first inversed pulse signal, a first pull-up circuit outputting a first gate control signal, and a first main pull-down circuit electrically connecting to the first pull-up circuit. The first pull-up circuit receives a first driving signal and a first pulse signal to output the first gate control signal. The first inversed pulse signal coupling circuit duly outputs the first inversed pulse signal to compensate a surge occurring in the first driving signal.Type: GrantFiled: October 18, 2013Date of Patent: March 15, 2016Assignee: AU POTRONICS CORP.Inventors: Wei-Li Lin, Chun-Huan Chang, Che-Wei Tung, Shu-Fang Hou
-
Patent number: 9087492Abstract: A method for use in a display panel is disclosed. The method includes providing M bus lines in the bus area for receiving a plurality of clock signals, M being a positive integer greater than 3; providing a plurality of signal lines to separately provide the clock signals from the M bus line to the circuit area, the circuit area configured to provide the plurality of sequential gate line signals in response to the clock signals, the plurality of signal lines including a plurality of adjacent signal-line pairs, each adjacent signal-line pair having a resistance difference, said signal lines including a maximum resistance value and a minimum resistance value, and wherein the M bus lines are arranged such that the resistance difference in any one of the adjacent signal-line pairs is smaller than a value difference between the maximum resistance value and the minimum resistance value.Type: GrantFiled: April 23, 2012Date of Patent: July 21, 2015Assignee: AU Optronics CorporationInventors: Chun Huan Chang, Chun-Hsin Liu, Kun-Yueh Lin, Ya-Ting Lin
-
Publication number: 20150194090Abstract: A display panel includes a display area, a shift register circuit, a first start signal line, and a second start signal line. The shift register circuit is electrically coupled to the display area through a plurality of signal output lines. The first start signal line and the second start signal line are electrically coupled to the shift register circuit. The first start signal line and the second start signal line are both arranged without crossing the signal output lines.Type: ApplicationFiled: July 7, 2014Publication date: July 9, 2015Inventors: Wei-Li LIN, Yi-Suei LIAO, Chun-Huan CHANG
-
Publication number: 20140369457Abstract: A shift register circuit includes a first pull-down control circuit, a first pull-down circuit electrically connecting to the first pull-down control circuit, a first inversed pulse signal coupling circuit outputting a first inversed pulse signal, a first pull-up circuit outputting a first gate control signal, and a first main pull-down circuit electrically connecting to the first pull-up circuit. The first pull-up circuit receives a first driving signal and a first pulse signal to output the first gate control signal. The first inversed pulse signal coupling circuit duly outputs the first inversed pulse signal to compensate a surge occurring in the first driving signal.Type: ApplicationFiled: October 18, 2013Publication date: December 18, 2014Applicant: AU OPTRONICS CORP.Inventors: Wei-Li LIN, Chun-Huan CHANG, Che-Wei TUNG, Shu-Fang HOU
-
Patent number: 8890785Abstract: A display panel and its gate driving circuit are provided. The gate driving circuit includes a plurality of shift registers. Each of the shift registers includes a first scan signal generator for generating a first scan signal, a second scan signal generator for generating a second scan signal, a first control unit for generating a first control signal, and a second control unit for generating a second control signal. Here, the first control signal and the second control signal are shared by the first scan signal generator and the second scan signal generator. Based on the above, the abatement of signal intensity of the first scan signal and the second scan signal caused by circuit sharing can be precluded, and a chip area occupied by each of the shift registers can be reduced.Type: GrantFiled: April 18, 2012Date of Patent: November 18, 2014Assignee: Au Optronics CorporationInventors: Kun-Yueh Lin, Chun-Hsin Liu, Chun-Huan Chang, Ya-Ting Lin
-
Patent number: 8711132Abstract: An exemplary gate driving circuit is adapted for driving a display panel including multiple pixels and includes a first gate driving unit string and a second gate driving unit string. The first gate driving unit string includes multiple cascade-connected first gate driving units and receives a start pulse. The first gate driving units are for generating output pulses to drive the pixels. The second gate driving unit string includes multiple cascade-connected second gate driving units and receives the start pulse. The second gate driving units are for generating output pulses to drive the pixels. The output pulse generated from one of the second gate driving units is provided to one of first gate driving units to determine whether to disable the output pulse of the first gate driving unit which receives the output pulse generated from the second gate driving units.Type: GrantFiled: February 1, 2012Date of Patent: April 29, 2014Assignee: Au Optronics Corp.Inventors: Chun-Huan Chang, Wan-Jung Chen, Yu-Chung Yang
-
Patent number: 8687761Abstract: A shift register circuit includes plural shift register stages for providing plural gate signals. Each shift register stage includes an input unit and a pull-up unit. The pull-up unit is utilized for pulling up a gate signal according to a system clock and a driving control voltage. The input unit is employed for outputting the driving control voltage according to a control signal and an input signal. The input unit includes a switch device having a first transistor and a second transistor. The first transistor has a first end for receiving the input signal, a gate end for receiving the control signal, and a second end. The second transistor has a first end electrically connected to the second end of the first transistor, a gate end electrically connected to the first end of the first transistor, and a second end for outputting the driving control voltage.Type: GrantFiled: June 10, 2013Date of Patent: April 1, 2014Assignee: AU Optronics Corp.Inventors: Kuo-Hua Hsu, Yung-Chih Chen, Chun-Huan Chang
-
Publication number: 20140063398Abstract: A display panel is provided. A substrate includes a non-display area and a display area including a center area, a first area, and a second area. First data lines are disposed in the first area and electrically connected to the first source driving circuit. Second data lines are disposed in the second area and electrically connected to the second source driving circuit. At least one first repairing line is electrically connected to the first source driving circuit, passes through the center area of the display area and overlaps with the first data lines, wherein the first repairing line is electrically insulated from the first data lines. At least one second repairing line is electrically connected to the second source driving circuit, passes through the center area of the display area and overlaps with the second data lines, wherein the second repairing line is electrically insulated from the second data lines.Type: ApplicationFiled: March 15, 2013Publication date: March 6, 2014Applicant: AU OPTRONICS CORPORATIONInventors: Chun-Huan Chang, Chun-Hsin Liu, Kun-Yueh Lin, Ya-Ting Lin, Shu-Fang Hou, Che-Wei Tung, Wei-Li Lin
-
Patent number: 8581655Abstract: A clock signal supplying method for shift registers includes following steps: receiving a clock signal; and transmitting the clock signal to two first stage signal transmission paths simultaneously, the first stage signal transmission paths determined by a first control signal whether to be conducted, and further conducted at different time.Type: GrantFiled: October 11, 2011Date of Patent: November 12, 2013Assignee: Au Optronics Corp.Inventors: Yung-Chih Chen, Kuo-Chang Su, Chun-Huan Chang, Yu-Chung Yang
-
Publication number: 20130278567Abstract: A method for use in a display panel is disclosed. The method includes providing M bus lines in the bus area for receiving a plurality of clock signals, M being a positive integer greater than 3; providing a plurality of signal lines to separately provide the clock signals from the M bus line to the circuit area, the circuit area configured to provide the plurality of sequential gate line signals in response to the clock signals, the plurality of signal lines including a plurality of adjacent signal-line pairs, each adjacent signal-line pair having a resistance difference, said signal lines including a maximum resistance value and a minimum resistance value, and wherein the M bus lines are arranged such that the resistance difference in any one of the adjacent signal-line pairs is smaller than a value difference between the maximum resistance value and the minimum resistance value.Type: ApplicationFiled: April 23, 2012Publication date: October 24, 2013Applicant: AU OPTRONICS CORPORATIONInventors: Chun Huan CHANG, Chun-Hsin LIU, Kun-Yueh LIN, Ya-Ting LIN
-
Publication number: 20130272486Abstract: A shift register circuit includes plural shift register stages for providing plural gate signals. Each shift register stage includes an input unit and a pull-up unit. The pull-up unit is utilized for pulling up a gate signal according to a system clock and a driving control voltage. The input unit is employed for outputting the driving control voltage according to a control signal and an input signal. The input unit includes a switch device having a first transistor and a second transistor. The first transistor has a first end for receiving the input signal, a gate end for receiving the control signal, and a second end. The second transistor has a first end electrically connected to the second end of the first transistor, a gate end electrically connected to the first end of the first transistor, and a second end for outputting the driving control voltage.Type: ApplicationFiled: June 10, 2013Publication date: October 17, 2013Inventors: Kuo-Hua Hsu, Yung-Chih Chen, Chun-Huan Chang
-
Patent number: 8494108Abstract: A shift register circuit includes plural shift register stages for providing plural gate signals. Each shift register stage includes an input unit and a pull-up unit. The pull-up unit is utilized for pulling up a gate signal according to a system clock and a driving control voltage. The input unit is employed for outputting the driving control voltage according to a control signal and an input signal. The input unit includes a switch device having a first transistor and a second transistor. The first transistor has a first end for receiving the input signal, a gate end for receiving the control signal, and a second end. The second transistor has a first end electrically connected to the second end of the first transistor, a gate end electrically connected to the first end of the first transistor, and a second end for outputting the driving control voltage.Type: GrantFiled: July 20, 2011Date of Patent: July 23, 2013Assignee: AU Optronics Corp.Inventors: Kuo-Hua Hsu, Yung-Chih Chen, Chun-Huan Chang
-
Patent number: 8467027Abstract: A display panel including plural wiring sets is provided. Each of the wiring sets includes plural wires extending substantially along a straight direction. Each of the wiring sets has a first part and a second part respectively located at two opposite sides of a sealant. The first part is located between the sealant and an active region of the display panel, and a shortest distance of two adjacent wire segments of the first part is larger than a shortest distance of two adjacent wire segments of the second part. In addition, the shortest distance of two adjacent wire segments of the first part may be limited from about 15 ?m to about 35 ?m. The configuration of wiring set can reduce crosstalk of electric field between two adjacent wires to prevent light leakage and improve display quality.Type: GrantFiled: February 3, 2010Date of Patent: June 18, 2013Assignee: Au Optronics CorporationInventors: Chun-Huan Chang, Chien-Hao Fu, Chun-Kai Chang
-
Publication number: 20130100006Abstract: A display panel and its gate driving circuit are provided. The gate driving circuit includes a plurality of shift registers. Each of the shift registers includes a first scan signal generator for generating a first scan signal, a second scan signal generator for generating a second scan signal, a first control unit for generating a first control signal, and a second control unit for generating a second control signal. Here, the first control signal and the second control signal are shared by the first scan signal generator and the second scan signal generator. Based on the above, the abatement of signal intensity of the first scan signal and the second scan signal caused by circuit sharing can be precluded, and a chip area occupied by each of the shift registers can be reduced.Type: ApplicationFiled: April 18, 2012Publication date: April 25, 2013Applicant: Au Optronics CorporationInventors: Kun-Yueh Lin, Chun-Hsin Liu, Chun-Huan Chang, Ya-Ting Lin
-
Patent number: 8421981Abstract: A display panel having a display region and a sealant region is provided. The display panel includes a first substrate, a second substrate, a sealant and a display medium. The sealant is disposed between the first and second substrates and within the sealant region. The display medium is disposed between the first and second substrates and within the display region. The second substrate includes pixel units and wires electrically connected to the pixel units. The pixel units are disposed within the display region, the wires extend to the sealant region from the display region, and at least a portion of the wires in the sealant region has slots. In particular, each of the slots has a side edge adjacent to the edge of the wire which the slot is disposed therein, and the distances from the side edge to the edge of the wire are not equal.Type: GrantFiled: February 9, 2009Date of Patent: April 16, 2013Assignee: Au Optronics CorporationInventors: Pai-Hung Hsu, Chien-Hao Fu, Chun-Huan Chang, Ming-Chin Lee, Min-Feng Chiang
-
Publication number: 20120320021Abstract: An exemplary gate driving circuit is adapted for driving a display panel including multiple pixels and includes a first gate driving unit string and a second gate driving unit string. The first gate driving unit string includes multiple cascade-connected first gate driving units and receives a start pulse. The first gate driving units are for generating output pulses to drive the pixels. The second gate driving unit string includes multiple cascade-connected second gate driving units and receives the start pulse. The second gate driving units are for generating output pulses to drive the pixels. The output pulse generated from one of the second gate driving units is provided to one of first gate driving units to determine whether to disable the output pulse of the first gate driving unit which receives the output pulse generated from the second gate driving units.Type: ApplicationFiled: February 1, 2012Publication date: December 20, 2012Applicant: AU OPTRONICS CORP.Inventors: Chun-Huan Chang, Wan-Jung Chen, Yu-Chung Yang
-
Patent number: 8325127Abstract: The present invention relates to a shift register and GOA architecture of the same in a display panel comprising a substrate and a plurality of pixels spatially formed on the substrate defining a number of pixel rows, each pixel row having a height of H. The shift register has the plurality of shift register stages disposed spatially and sequentially on the substrate in such a way that the layout of each shift register stage has a height of (j*H), j being an integer greater than one. Each shift register stages is configured to generate j scanning signals for driving j neighboring pixel rows, respectively.Type: GrantFiled: June 25, 2010Date of Patent: December 4, 2012Assignee: AU Optronics CorporationInventors: Chun-Huan Chang, Kuo-Chang Su, Yung-Chih Chen, Chun-Hsin Liu
-
Patent number: 8314766Abstract: A liquid crystal display panel includes a display area, a wiring area, and an external circuit area, wherein the wiring area is between the display area and the external circuit area. The liquid crystal display panel includes many pixel structures, external pads and wiring sets. Each wiring set includes a plurality of upper-layer main wires disposed on one plane and lower-layer main wires disposed on another plane, wherein the two planes are parallel. In addition, each upper-layer main wire corresponds to one lower-layer main wire and the shadow which the upper-layer main wire vertically projects on the surface overlaps a part of the corresponding lower-layer main wire. The light leakage around the display area can be eliminated by proper arrangement of main wiring sets, and therefore the display quality is improved.Type: GrantFiled: March 16, 2009Date of Patent: November 20, 2012Assignee: Au Optronics CorporationInventor: Chun-Huan Chang
-
Publication number: 20120170707Abstract: A shift register circuit includes plural shift register stages for providing plural gate signals. Each shift register stage includes an input unit and a pull-up unit. The pull-up unit is utilized for pulling up a gate signal according to a system clock and a driving control voltage. The input unit is employed for outputting the driving control voltage according to a control signal and an input signal. The input unit includes a switch device having a first transistor and a second transistor. The first transistor has a first end for receiving the input signal, a gate end for receiving the control signal, and a second end. The second transistor has a first end electrically connected to the second end of the first transistor, a gate end electrically connected to the first end of the first transistor, and a second end for outputting the driving control voltage.Type: ApplicationFiled: July 20, 2011Publication date: July 5, 2012Inventors: Kuo-Hua Hsu, Yung-Chih Chen, Chun-Huan Chang