Patents by Inventor Chia-Hua Yu

Chia-Hua Yu 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: 11635651
    Abstract: The invention provides a display panel, which includes a first substrate, a second substrate, a liquid crystal layer, a light shielding pattern layer and a plurality of pixel structures. The liquid crystal layer is disposed between the first substrate and the second substrate, and includes a plurality of negative liquid crystal molecules. Each of the pixel structures includes a first electrode and a second electrode. The first electrode has an electrode opening and a first finger portion extending into the electrode opening. The second electrode has two second finger portions overlapping the electrode opening. The first finger portion and the two second finger portions are alternately arranged along a first direction inside the electrode opening and extend in a second direction.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: April 25, 2023
    Assignee: HannStar Display Corporation
    Inventors: Chia-Hua Yu, Kun Tsai Huang, Feng-Wei Kuo, Luo-Yi Wu
  • Publication number: 20220128858
    Abstract: The invention provides a display panel, which includes a first substrate, a second substrate, a liquid crystal layer, a light shielding pattern layer and a plurality of pixel structures. The liquid crystal layer is disposed between the first substrate and the second substrate, and includes a plurality of negative liquid crystal molecules. Each of the pixel structures includes a first electrode and a second electrode. The first electrode has an electrode opening and a first finger portion extending into the electrode opening. The second electrode has two second finger portions overlapping the electrode opening. The first finger portion and the two second finger portions are alternately arranged along a first direction inside the electrode opening and extend in a second direction.
    Type: Application
    Filed: October 12, 2021
    Publication date: April 28, 2022
    Applicant: HannStar Display Corporation
    Inventors: Chia-Hua Yu, Kun Tsai Huang, Feng-Wei Kuo, Luo-Yi Wu
  • Patent number: 11209705
    Abstract: A display panel has an odd-shaped active area and a peripheral area. The display panel includes a substrate, pixel units, gate lines and at least one dummy thin film transistor. The pixel units are disposed on the active area of the substrate. The gate lines are disposed on the substrate, each of the gate lines is coupled to one or more of the pixel units, and the number of pixel units coupled to a first gate line of the gate lines is smaller than the number of pixel units a second gate line coupled to of the gate lines. The dummy thin film transistor is disposed on the substrate, and is coupled to the first gate line.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: December 28, 2021
    Assignee: HannStar Display Corporation
    Inventors: Chia-Hua Yu, Sung-Chun Lin, Hsien-Tang Hu, Hsuan-Chen Liu, Chien-Ting Chan
  • Patent number: 11143906
    Abstract: A reflective LCD panel includes a color filter substrate, an array substrate, a liquid crystal layer and a polarizing film. The array substrate and the color filter substrate are disposed oppositely. The liquid crystal layer is disposed between the color filter substrate and the array substrate and has an alignment direction. The polarizing film is disposed on the color filter substrate, and color coordinates of the polarizing film in the CIE1976 color space are (a, b), wherein 0.05?a?0.2 and ?5?b?0. The liquid crystal layer has a birefringence difference ?n, the liquid crystal layer has a thickness (d), when the reflective LCD panel is in a white frame, 2?n*d=?? is satisfied, ?? is the optical path difference obtained when a forward light vertically enters the liquid crystal layer and is reflected by the array substrate, and 120 nm??n*d?170 nm.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: October 12, 2021
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: Ding-Wei Liu, Meng-Ju Li, Wei-Chih Hsu, Chen-Hao Su, Sung-Chun Lin, Chia-Hua Yu
  • Publication number: 20210294156
    Abstract: A reflective LCD panel includes a color filter substrate, an array substrate, a liquid crystal layer and a polarizing film. The array substrate and the color filter substrate are disposed oppositely. The liquid crystal layer is disposed between the color filter substrate and the array substrate and has an alignment direction. The polarizing film is disposed on the color filter substrate, and color coordinates of the polarizing film in the CIE1976 color space are (a, b), wherein 0.05?a?0.2 and ?5?b?0. The liquid crystal layer has a birefringence difference ?n, the liquid crystal layer has a thickness (d), when the reflective LCD panel is in a white frame, 2?n*d=?? is satisfied, ?? is the optical path difference obtained when a forward light vertically enters the liquid crystal layer and is reflected by the array substrate, and 120 nm??n*d?170 nm.
    Type: Application
    Filed: March 18, 2021
    Publication date: September 23, 2021
    Inventors: Ding-Wei LIU, Meng-Ju LI, Wei-Chih HSU, Chen-Hao SU, Sung-Chun LIN, Chia-Hua YU
  • Publication number: 20190377234
    Abstract: A display panel has an odd-shaped active area and a peripheral area. The display panel includes a substrate, pixel units, gate lines and at least one dummy thin film transistor. The pixel units are disposed on the active area of the substrate. The gate lines are disposed on the substrate, each of the gate lines is coupled to one or more of the pixel units, and the number of pixel units coupled to a first gate line of the gate lines is smaller than the number of pixel units a second gate line coupled to of the gate lines. The dummy thin film transistor is disposed on the substrate, and is coupled to the first gate line.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 12, 2019
    Inventors: Chia-Hua YU, Sung-Chun LIN, Hsien-Tang HU, Hsuan-Chen LIU, Chien-Ting CHAN
  • Patent number: 10481448
    Abstract: A liquid crystal display device includes a plurality of pixel units, an electrode line surrounding the pixel units, at least one gate driver coupled with the pixel units via a plurality of gate lines, and at least one electrostatic discharge protection circuit coupled with the at least one gate driver and the electrode line.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: November 19, 2019
    Assignees: HANNSTAR DISPLAY (NANJING) CORPORATION, HANNSTAR DISPLAY CORPORATION
    Inventors: Chia-Hua Yu, Sung-Chun Lin, Hsuan-Chen Liu, Chien-Ting Chan
  • Patent number: 10181303
    Abstract: A shift register circuit is disclosed. The shift register circuit includes a first gate driving module, a second gate driving module, a first discharging module, and a second discharging module. The first gate driving module has a first node and a first output terminal. The second gate driving module has a second node and a second output terminal. The first discharging module is coupled to the first node, the second node, and the first output terminal respectively. The second discharging module is coupled to the second node, the first node, and the second output terminal respectively. Both the first discharging module and the second discharging module include ten transistors respectively.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: January 15, 2019
    Assignees: HANNSTAR DISPLAY (NANJING) CORPORATION, HANNSTAR DISPLAY CORPORATION
    Inventors: Chia-Hua Yu, Sung-Chun Lin, Hsuan-Chen Liu, Chien-Ting Chan
  • Publication number: 20170139292
    Abstract: A liquid crystal display device includes a plurality of pixel units, an electrode line surrounding the pixel units, at least one gate driver coupled with the pixel units via a plurality of gate lines, and at least one electrostatic discharge protection circuit coupled with the at least one gate driver and the electrode line.
    Type: Application
    Filed: November 14, 2016
    Publication date: May 18, 2017
    Inventors: Chia-Hua Yu, Sung-Chun Lin, Hsuan-Chen Liu, Chien-Ting Chan
  • Patent number: 9508449
    Abstract: A liquid crystal display and its bidirectional shift register device including N stages of shift registers are provided. An ith stage shift register of the shift registers includes a pre-charge unit, a pull-up unit and a pull-down unit. The pre-charge unit outputs a pre-charge signal according to outputs of (i?2)th and (i+2)th stage shift registers. The pull-up unit outputs a scan signal. A first discharge unit of the pull-down unit determines whether to pull the scan signal down to a reference voltage potential according to the pre-charge signal and a first voltage-dividing signal associated with a first level signal. A second discharge unit of the pull-down unit determines whether to pull the scan signal down to the reference voltage potential according to the pre-charge signal and a second voltage-dividing signal associated with a second level signal.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: November 29, 2016
    Assignee: Hannstar Display Corporation
    Inventors: Chia-Hua Yu, Sung-Chun Lin, Hsuan-Chen Liu, Chien-Ting Chan
  • Publication number: 20160240265
    Abstract: A shift register circuit is disclosed. The shift register circuit includes a first gate driving module, a second gate driving module, a first discharging module, and a second discharging module. The first gate driving module has a first node and a first output terminal. The second gate driving module has a second node and a second output terminal. The first discharging module is coupled to the first node, the second node, and the first output terminal respectively. The second discharging module is coupled to the second node, the first node, and the second output terminal respectively. Both the first discharging module and the second discharging module include ten transistors respectively.
    Type: Application
    Filed: February 2, 2016
    Publication date: August 18, 2016
    Inventors: CHIA-HUA YU, SUNG-CHUN LIN, HSUAN-CHEN LIU, CHIEN-TING CHAN
  • Patent number: 9417885
    Abstract: A computer system and a control method thereof are described. The computer system includes a first memory, a second memory, and a control module. The first memory is configured to store a Basic Input Output System (BIOS) program. The second memory includes a first memory block and a second memory block. The control module, when a scan function is initiated, is configured to execute the BIOS program to generate a first restart program, wherein the control module is configured to store the first restart program into the first memory block and scan the second memory block, and stop using an abnormal cell in the second memory block.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 16, 2016
    Assignee: ACER INCORPORATED
    Inventors: Wei Chiang, Chia-Hua Yu
  • Patent number: 9286846
    Abstract: An LCD and bidirectional shift register apparatuses thereof are provided. One of the bidirectional shift register apparatuses includes Nth shift registers. An ith shift register includes a pre-charge unit, a pull-up unit and a pull-down unit. When i is greater than or equal to 3 and less than or equal to N?2, the pre-charge unit receives outputs of an (i?2)th and an (i+2)th shift register. When i is equal to 1 or 2, the pre-charge unit receives a first start pulse signal and the output of the (i+2)th shift register. When i is equal to (N?1) or N, the pre-charge unit receives a second start pulse signal and the output of the (i?2)th shift register. The pre-charge unit outputs a pre-charge signal. The pull-up unit outputs a scan signal. The pull-down unit receives the pre-charge signal to control a level of the scan signal.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: March 15, 2016
    Assignee: HannStar Display Corporation
    Inventors: Chia-Hua Yu, Sung-Chun Lin, Hsuan-Chen Liu, Chien-Ting Chan
  • Patent number: 9230999
    Abstract: A pixel substrate and a fabrication method thereof are provided. The method includes: forming a gate and a lower pad on a substrate; forming a gate insulating layer overlaying the gate and the lower pad; forming a channel layer and a first electrode layer on the gate insulating layer, in which the projection areas of the channel layer and the gate on the substrate are overlapped; forming an etching-barrier material layer on the substrate and simultaneously forming a contact opening at the gate insulating layer to expose the lower pad; forming a source, a drain and an upper pad on the substrate; forming a protective layer; forming a second electrode layer with multiple slits on the protective layer, in which one of the first and second electrode layers is electrically connected to the drain. The invention can simplify the process steps and reduce fabrication time.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: January 5, 2016
    Assignee: HannStar Display Corporation
    Inventors: Chia-Hua Yu, Mu-Kai Kang, Hsien-Tang Hu, Chang-Ming Chao, Jui-Chi Lai
  • Patent number: 9170448
    Abstract: A display apparatus includes a transparent substrate, a transparent matrix layer, a black matrix layer and a conductive layer. The transparent matrix layer is disposed above the transparent substrate. The black matrix layer is disposed below the transparent substrate. The conductive layer is disposed between the transparent substrate and the black matrix layer.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: October 27, 2015
    Assignee: HANNSTAR DISPLAY CORP.
    Inventors: Feng-Wei Kuo, Ko-Ruey Jen, Chia-Hua Yu, I-Fang Wang
  • Publication number: 20150194449
    Abstract: A pixel substrate and a fabrication method thereof are provided. The method includes: forming a gate and a lower pad on a substrate; forming a gate insulating layer overlaying the gate and the lower pad; forming a channel layer and a first electrode layer on the gate insulating layer, in which the projection areas of the channel layer and the gate on the substrate are overlapped; forming an etching-barrier material layer on the substrate and simultaneously forming a contact opening at the gate insulating layer to expose the lower pad; forming a source, a drain and an upper pad on the substrate; forming a protective layer; forming a second electrode layer with multiple slits on the protective layer, in which one of the first and second electrode layers is electrically connected to the drain. The invention can simplify the process steps and reduce fabrication time.
    Type: Application
    Filed: January 6, 2015
    Publication date: July 9, 2015
    Inventors: Chia-Hua Yu, Mu-Kai Kang, Hsien-Tang Hu, Chang-Ming Chao, Jui-Chi Lai
  • Patent number: 9042509
    Abstract: An LCD and a bidirectional shift register device thereof are provided. The bidirectional shift register device of the invention is disposed on the substrate of the panel and includes multi-stages shift registers in series connection. Each stage shift register includes a pre-charging unit, a pull-up unit and a pull-down unit, in which the pre-charging unit receives a first preset clock signal and the output from a (i?1)th stage shift register or a (i+1)th stage shift register so as to thereby output a charging signal. The pull-up unit receives the charging signal and a second preset clock signal so as to thereby output a scan signal. The pull-down unit receives the second preset clock signal, a third preset clock signal and the output from the (i+2)th stage shift register or the (i?2)th stage shift register so as to decide whether or not pulling down the scan signal to a reference level.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: May 26, 2015
    Assignee: HannStar Display Corporation
    Inventors: Chia-Hua Yu, Chien-Ting Chan, Chien-Chuan Ko, Chun-Lin Chang
  • Patent number: 9029882
    Abstract: An active device array substrate for saving material cost includes a substrate, scan lines, data lines, a thin film transistor, a color filter layer, a transparent conductive layer, an insulating layer and a pixel electrode. The color filter layer covers and contacts the scan lines, data lines and the thin film transistor. The transparent conductive layer is disposed on the color filter layer and electrically isolated from the scan lines, the data lines and the thin film transistor by the color filter layer. The insulating layer covers the transparent conductive layer. The pixel electrode is disposed on the insulating layer and connected to the thin film transistor.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: May 12, 2015
    Assignee: HannStar Display Corporation
    Inventors: Chia-Hua Yu, Sung-Chun Lin, Chung-Lin Chang, Chien-Ting Chan, Hsuan-Chen Liu
  • Patent number: 9029876
    Abstract: There is provided a pixel structure of a liquid crystal panel including a transparent substrate, and a gate line, a data line, a switching transistor, a first electrode, a second electrode and a shield layer formed on the transparent substrate. The gate line is substantially perpendicular to the data line. The switching transistor is located adjacent to a crossing point of the gate line and the data line, and is configured to input a display voltage of the data line to the second electrode according to the control of the gate line. The first electrode and the second electrode are arranged in such a way that the display voltage forms a transverse electric field between the first electrode and the second electrode. The shield layer overlaps at least a part of the gate and is electrically isolated from the first electrode and the second electrode.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: May 12, 2015
    Assignee: Hannstar Display Corp.
    Inventors: Chia Hua Yu, I Fang Wang, Feng Weei Kuo, Jui Chi Lai, Ko Ruey Jen, Guang Shiung Chao
  • Publication number: 20150109353
    Abstract: A liquid crystal display and its bidirectional shift register device including N stages of shift registers are provided. An ith stage shift register of the shift registers includes a pre-charge unit, a pull-up unit and a pull-down unit. The pre-charge unit outputs a pre-charge signal according to outputs of (i?2)th and (i+2)th stage shift registers. The pull-up unit outputs a scan signal. A first discharge unit of the pull-down unit determines whether to pull the scan signal down to a reference voltage potential according to the pre-charge signal and a first voltage-dividing signal associated with a first level signal. A second discharge unit of the pull-down unit determines whether to pull the scan signal down to the reference voltage potential according to the pre-charge signal and a second voltage-dividing signal associated with a second level signal.
    Type: Application
    Filed: January 10, 2014
    Publication date: April 23, 2015
    Applicant: Hannstar Display Corporation
    Inventors: Chia-Hua Yu, Sung-Chun Lin, Hsuan-Chen Liu, Chien-Ting Chan