Patents Assigned to Hannstar Display Corporation
  • Patent number: 10643522
    Abstract: In a shift register, a pre-charge unit is configured to receive a first input signal and output a pre-charge signal to a first node, a pull-up unit is configured to output a scan signal to a second node, and a pull-down unit is configured to receive a pull-down control signal. The pull-down control signal switches from a disable voltage to an enable voltage before the display panel switches from a non-display status to a display status.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: May 5, 2020
    Assignee: HannStar Display Corporation
    Inventors: Hsien-Tang Hu, Hsuan-Chen Liu, Chien-Ting Chan
  • Publication number: 20200133424
    Abstract: The invention provides a touch display apparatus including a display device, a polarizer device, and a touch device. The polarizer device and the touch device are stacked on the display device. The touch device has a substrate with a thickness-direction phase retardation value Rth, and 0 nm?|Rth|?100 nm. The touch display apparatus has high display quality under the irradiation of an ambient beam.
    Type: Application
    Filed: October 23, 2019
    Publication date: April 30, 2020
    Applicant: HannStar Display Corporation
    Inventors: Yen-Chung Chen, Wei-Chih Hsu
  • Patent number: 10636755
    Abstract: An electronic product includes a substrate and a bonding pad structure. The bonding pad structure is disposed on the substrate, and the bonding pad structure includes a first metal layer, a first insulating layer, at least one first connecting hole and a transparent conductive layer. The first metal layer and the first insulating layer are disposed on the substrate. The first connecting hole is situated in the first insulating layer, and the first connecting hole exposes a portion of the first metal layer. The transparent conductive layer is disposed on the first insulating layer, and the transparent conductive layer has a first edge and a second edge opposite to the first edge, wherein the transparent conductive layer is electrically connected to the first metal layer through the first connecting hole. A spacing between the first edge and the first connecting hole is greater than or equal to 100 ?m.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: April 28, 2020
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: Hsuan-Chen Liu, Yu-Tuan Hsu
  • Patent number: 10615183
    Abstract: An electronic device includes a first substrate, a second substrate, a plurality of first metal line segments and a shielding layer. The second substrate is opposite to the first substrate. The first metal line segments are disposed on the first substrate and extend along a first direction, wherein at least one of the first metal line segments includes a first alignment part and a first trace part, a width of the first alignment part is larger than a width of the first trace part, and the first alignment parts are arranged along a second direction. The shielding layer is disposed on the second substrate, and the shielding layer includes a plurality of first alignment structures, wherein one of the first alignment parts is aligned with one of the first alignment structures in a normal vector of the first substrate.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: April 7, 2020
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: Chung-Lin Chang, Hsuan-Chen Liu
  • Patent number: 10593283
    Abstract: The display panel includes a first substrate, a second substrate, pixel structures, a liquid crystal layer and a transparent conductive layer. The liquid crystal layer is disposed between the pixel structures and the second substrate. The transparent conductive layer is disposed between the second substrate and the liquid crystal layer. When a liquid crystal molecule of the liquid crystal layer is a positive liquid crystal molecule, an absolute voltage difference between the transparent conductive layer and the common electrode is smaller than or equal to 2.3 volts(V). When the liquid crystal molecule of the liquid crystal layer is a negative liquid crystal molecule, the absolute voltage difference between the transparent conductive layer and the common electrode is smaller than or equal to 5V.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: March 17, 2020
    Assignees: HannStar Display (Nanjing) Corporation, HannStar Display Corporation
    Inventors: Wei-Chih Hsu, Chen-Hao Su, Yu-Chen Liu
  • Patent number: 10579179
    Abstract: In a display panel, a first conducting layer is disposed on a substrate and has a touch sensing line. A first insulation layer is disposed on a first conducting layer with a first opening exposing the touch sensing line as a first connection part. A second insulation layer is disposed on the first insulation layer with a second opening. A first electrode is disposed on the second insulation layer with a third opening that is overlapped with the second opening. A third insulation layer is disposed on the first electrode with a fourth opening exposing the first electrode as a second connection part. The fourth opening overlaps with the third opening. A second electrode is disposed on the third insulation layer and is connected to the first connection part and the second connection part through the first to fourth openings.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: March 3, 2020
    Assignee: HannStar Display Corporation
    Inventors: Cheng-Yen Yeh, Kuo-Chang Su
  • Publication number: 20200057336
    Abstract: A reflective liquid crystal display panel including a plurality of pixel units is provided. Each pixel unit includes first and second substrates, one first signal line, four second signal lines, a liquid crystal layer, a first pixel structure, a second pixel structure, a third pixel structure and a fourth pixel structure. The first and second signal lines are disposed on the first substrate. The first, second, third, and fourth pixel structures are electrically connected to one of the four second signal lines respectively and electrically connected to the first signal line, where the first, second, third, and fourth pixel structures respectively include an active component and a reflective pixel electrode electrically connected to the active component, and a reflection area ratio of the first, second, third, and fourth pixel structures is 1:2:4:8. The second substrate is located opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate.
    Type: Application
    Filed: October 25, 2019
    Publication date: February 20, 2020
    Applicant: HannStar Display Corporation
    Inventors: Ming-Chang Yu, Cheng-Yen Yeh, Chen-Hao Su
  • Patent number: 10528161
    Abstract: A manufacturing method of a touch panel includes following steps. The first sensing electrodes and the second sensing electrodes are formed on a substrate first. Connecting bridges are formed next, wherein adjacent two first sensing electrodes are connected by at least one connecting bridge, and a manufacturing method of the connecting bridges includes following steps. A metal layer is formed on the substrate first, wherein a material of the metal layer includes silver. A photoresist layer is formed on a surface of the metal layer next, wherein a material of the photoresist layer includes sulfur. A photolithography process and an etching process are respectively performed on the photoresist layer and the metal layer to form the connecting bridges, wherein silver in the metal layer and sulfur in the photoresist layer react with each other to form a silver sulfide layer after the photoresist layer is formed.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: January 7, 2020
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: Chih-Wei Chen, Mei-Ling Chou, Yao-Chih Chuang
  • Patent number: 10509261
    Abstract: A reflective liquid crystal display panel including a plurality of pixel units is provided. Each pixel unit includes first and second substrates, one first signal line, four second signal lines, a liquid crystal layer, a first pixel structure, a second pixel structure, a third pixel structure and a fourth pixel structure. The first and second signal lines are disposed on the first substrate. The first, second, third, and fourth pixel structures are electrically connected to one of the four second signal lines respectively and electrically connected to the first signal line, where the first, second, third, and fourth pixel structures respectively include an active component and a reflective pixel electrode electrically connected to the active component, and a reflection area ratio of the first, second, third, and fourth pixel structures is one of 1:2:4:8 and 2:1:4:8. The second substrate is located opposite to the first substrate.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: December 17, 2019
    Assignee: HannStar Display Corporation
    Inventors: Ming-Chang Yu, Cheng-Yen Yeh, Chen-Hao Su
  • Patent number: 10504930
    Abstract: A reflective LCD panel includes a plurality of pixel units, each of which includes: first and second substrates, first and second scan lines, first and second data lines, a liquid crystal layer, and first, second, third, and fourth pixel structures. The first and second scan lines and the first and second data lines are disposed on the first substrate. Each of the first, second, third, and fourth pixel structures is electrically connected to one of the first and second scan lines and one of the first and second data lines, respectively. The first, second, third, and fourth pixel structures respectively include: an active component and a reflective pixel electrode electrically connected to the active component, and a reflective area ratio of the first, second, third, and fourth pixel structures is 1:2:4:8 or 2:1:4:8. Here, 16 gray scales may be displayed for achieving better visual effects.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: December 10, 2019
    Assignee: HannStar Display Corporation
    Inventors: Ming-Chang Yu, Cheng-Yen Yeh, Chen-Hao Su, Yu-Chen Liu
  • Patent number: 10495928
    Abstract: The in-cell touch display panel has a display area and a non-display area. Display IC bounding pads and touch pads are disposed in the non-display area. A touch electrode corresponds to more than one pixel structures. A touch sensing line is electrically connected to the touch electrode and one of the touch pads. A data line is electrically connected to a thin film transistor and one of the display pads. At least one of the display pads is disposed between two of the touch pads, and at least one of the touch pads is disposed between two of the display pads.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: December 3, 2019
    Assignees: HannStar Display (Nanjing) Corporation, HannStar Display Corporation
    Inventor: Cheng-Yen Yeh
  • 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: 10466559
    Abstract: A pixel structure includes a first substrate, a thin-film transistor, a second insulation layer, a first transparent conduction layer and a second substrate. The thin-film transistor includes a gate electrode formed on the first substrate, a semiconductor layer formed on the gate electrode, a first insulation layer located between the semiconductor layer and the gate electrode, and an electrode layer including a source electrode and a drain electrode. The source electrode covers a portion of the semiconductor layer. The drain electrode covers a portion of the semiconductor layer. The second insulation layer covers the thin-film transistor. The first transparent conduction layer is formed on the second insulation layer. An opening is formed in the first transparent conduction layer along a fringe of the semiconductor layer.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: November 5, 2019
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: Hsuan-Chen Liu, Chung-Lin Chang
  • Patent number: 10453409
    Abstract: The present invention provides a driving circuit and a display device. The driving circuit is disposed on a substrate of the display device. The driving circuit includes thin film transistors (TFTs), a capacitor and clock signal lines. Each of the TFTs includes a gate, a source and a drain. The capacitor is coupled to at least one of the TFTs, and includes a first and a second electrode. The material of the first and the second electrode includes a transparent conductive material. The clock signal lines extend along a first direction. The source and the drain of at least two of the TFTs respectively extend along a second direction. The angle between the first direction and the second direction is between 80 degrees and 100 degrees. At least a partial structure of the capacitor is located in a gap between adjacent ones of the TFTs.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: October 22, 2019
    Assignee: HannStar Display Corporation
    Inventors: Tean-Sen Jen, Sung-Chun Lin, Hsuan-Chen Liu, Chien-Ting Chan
  • Patent number: 10431552
    Abstract: In a display panel, multiple first alignment patterns are disposed in a non-display area on a first substrate, and each first alignment pattern includes a first portion and a second portion connected to each other. Multiple second alignment patterns are disposed in the non-display area on a second substrate, and each of the second alignment patterns includes a third portion and a fourth portion. There is a first length difference between the length of each first portion along a first direction and the length of the corresponding third portion along the first direction, and the first length differences are different from each other. There is a second length difference between the length of each second portion along a second direction and the length of the corresponding fourth portion along the second direction, and the second length differences are different from each other.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: October 1, 2019
    Assignee: HannStar Display Corporation
    Inventors: Chung-Lin Chang, Hsuan-Chen Liu
  • Patent number: 10416805
    Abstract: A touch display apparatus including a display panel and multiple touch electrodes disposed on the display panel is provided. The display panel has a plurality of pixel regions. Each of the pixel regions is arranged with a first pixel pitch Ppx along a first direction. Each of the pixel regions is arranged with a second pixel pitch Ppy along a second direction. Each touch electrode has a plurality of touch patterns. Each of the touch patterns is arranged with a first touch pitch Ptx along the first direction. Each of the touch patterns includes a plurality of bent segments connected to each other. Each of the bent segments is arranged with a second touch pitch Pty along the second direction. The first pixel pitch Ppx, the second pixel pitch Ppy, the first touch pitch Ptx and the second touch pitch Pty satisfy at least one of the following equations (1) and (2): 30 ? % ? ? P tx - P px ? P px ? 50 ? % , equation ? ? ( 1 ) 3 ? P ty P py ? 12.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: September 17, 2019
    Assignee: HannStar Display Corporation
    Inventors: Cheng-Yen Yeh, Yu-Chen Liu, Hsing-Ying Lee, Yu-Cheng Lin
  • Patent number: 10416798
    Abstract: A touch display apparatus includes a display panel having pixel areas and touch electrodes disposed above the display panel. The pixel areas are arranged with a pixel pitch Ppx in a first direction. The touch electrodes have bending patterns arranged with a first touch electrode pitch Ptx in the first direction. Each bending pattern includes repeating portions connected with one another. The repeating portions are arranged with a second touch electrode pitch Pty in a second direction intersecting the first direction. Each repeating portion has a first line segment inclined with respect to the first direction and the second direction. An angle a is included between the first line segment and the second direction, and 10°???45°. The pixel pitch, the first touch electrode pitch and the second touch electrode pitch satisfy 1.5Ppx?Ptx?2Ppx and 1.63Ppx?0.5Pty?9.94Ppx.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: September 17, 2019
    Assignee: HannStar Display Corporation
    Inventor: Heng-Cheng Tseng
  • Patent number: 10403382
    Abstract: The invention provides a gate driving circuit and a display apparatus. The gate driving circuit includes 1st to Nth stage shift registers for respectively generating and sequentially outputting 1st to Nth stage scan signals to the display panel, where N is an integer greater than or equal to 4. Each of the shift registers is configured to receive a starting signal, and the starting signal is utilized to trigger the 1st and 2nd stage shift registers to generate the 1st and 2nd stage scan signals respectively, and the starting signal is utilized to reset the 3rd to Nth stage shift registers.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: September 3, 2019
    Assignee: HannStar Display Corporation
    Inventors: Sung-Chun Lin, Chien-Ting Chan, Yu-Tuan Hsu, Po-Yi Chen, Hsien-Tang Hu, Hsuan-Chen Liu
  • Patent number: 10379274
    Abstract: A color filter and a display panel, wherein the color filter includes a color correction material. In an absorption spectrum of the color correction material, a wavelength interval of the absorption spectrum with a visible light absorption rate smaller than 0.2 is from 150 to 180 nanometers.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: August 13, 2019
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventor: Jiun-Haw Lee
  • Patent number: 10371979
    Abstract: A display panel includes the following components. A metal layer includes a touch sensing line and a data line. An insulation layer is disposed on the metal layer and has a first opening used to expose at least a portion of the touch sensing line as a first connection part. A common electrode is disposed on the insulation layer. The common electrode is part of a touch electrode, and the common electrode has a second opening above the first opening. Another insulation layer is disposed on the common electrode, and has a third opening above the second opening to expose at least a portion of the common electrode as a second connection part. The connection electrode electrically connects the first connection part to the second connection part through the third opening, the second opening and the first opening.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: August 6, 2019
    Assignee: HannStar Display Corporation
    Inventors: Cheng-Yen Yeh, Kuo-Chang Su