Patents Assigned to Hannstar Display Corporation
  • Publication number: 20230147751
    Abstract: A display panel includes a first substrate and multiple pixel structures. The pixel structure includes at least one active element, at least one pixel electrode, a first common electrode, and a second common electrode. The at least one pixel electrode includes a first sub-electrode, a second sub-electrode, and a third sub-electrode. The first sub-electrode is electrically connected to one of the at least one corresponding active element and the second sub-electrode. The third sub-electrode is electrically connected to the second sub-electrode. The first sub-electrode, the second sub-electrode, and the third sub-electrode are different layers. The first common electrode is disposed between the first sub-electrode and the first substrate, and overlaps the first sub-electrode. The second common electrode is disposed between the first sub-electrode and the third sub-electrode, and overlaps the first sub-electrode and the third sub-electrode.
    Type: Application
    Filed: October 13, 2022
    Publication date: May 11, 2023
    Applicant: HannStar Display Corporation
    Inventors: Mu-Kai Kang, Cheng-Yen Yeh, Sz-Kai Huang, Jing-Xuan Chen, Yen-Chung Chen
  • Patent number: 11644913
    Abstract: A touch display device includes a display panel, a conductive layer, an optical matching layer and a buffer layer. The display panel comprises a first substrate, a second substrate and a display medium layer. The first substrate comprises a first surface and a second surface, the second substrate is disposed opposite to the first substrate, and the display medium layer is disposed between the second surface of the first substrate and the second substrate. The conductive layer is disposed on the first surface of the first substrate, and comprises a plurality of sensing electrodes. The optical matching layer is disposed between the conductive layer and the first surface of the first substrate. The buffer layer with a thickness greater than or equal to 50 ? and less than or equal to 3000 ? is disposed between the optical matching layer and the first surface of the first substrate.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: May 9, 2023
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: Tzung-Hsien Hsu, Chih-Wei Chen, Mei-Ling Chou, Chia-Yu Liu, Yao-Chih Chuang
  • Patent number: 11644923
    Abstract: The present invention provides a touch display panel. The substrate includes a display region and a non-display region. The first conductive pads, the second conductive pads, the first conductive lines and the second conductive lines are disposed in the non-display region. The first conductive lines are electrically connected to the first conductive pads and the sub-pixels in the display region. The second conductive lines are electrically connected to the second conductive pads and the touch electrodes in the display region. The second conductive line includes a first line segment, a second line segment and a third line segment. The first line segment extends in a first direction and is connected to the second conductive pad. The second line segment extends from the non-display region to the display region. The third line segment extends in a second direction and is connected to the first line segment and the second line segment.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: May 9, 2023
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: Mu-Kai Kang, Jing-Xuan Chen, Cheng-Yen Yeh, Sz-Kai Huang
  • Publication number: 20230129882
    Abstract: A touch display device including a substrate, a touch structure, a plurality of light emitting elements and a reflection layer is provided by the present invention. The substrate includes a first surface and a second surface opposite to the first surface. The touch structure includes a plurality of first touch electrodes disposed on the first surface of the substrate. The light emitting elements are disposed on the second surface of the substrate, and one of the light emitting elements includes a light emitting surface and a bottom surface opposite to the light emitting surface. The reflection layer is disposed on the second surface of the substrate. The light emitting elements are disposed between the reflection layer and the substrate, and the light emitting surface of one of the light emitting elements is disposed between the bottom surface and the reflection layer.
    Type: Application
    Filed: October 3, 2022
    Publication date: April 27, 2023
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Yao-Chih Chuang, Chia-Yu Liu, Chih-Wei Chen, Ming-Liang Chen
  • 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
  • Patent number: 11635838
    Abstract: A touch display device including a substrate, a touch structure, a plurality of light emitting elements and a reflection layer is provided by the present invention. The substrate includes a first surface and a second surface opposite to the first surface. The touch structure includes a plurality of first touch electrodes disposed on the first surface of the substrate. The light emitting elements are disposed on the second surface of the substrate, and one of the light emitting elements includes a light emitting surface and a bottom surface opposite to the light emitting surface. The reflection layer is disposed on the second surface of the substrate. The light emitting elements are disposed between the reflection layer and the substrate, and the light emitting surface of one of the light emitting elements is disposed between the bottom surface and the reflection layer.
    Type: Grant
    Filed: October 3, 2022
    Date of Patent: April 25, 2023
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: Yao-Chih Chuang, Chia-Yu Liu, Chih-Wei Chen, Ming-Liang Chen
  • Publication number: 20230071568
    Abstract: This invention discloses a display panel including a first substrate, light emitting elements, a touch sensing structure and a conductive layer. The light emitting elements are disposed on the first substrate. The touch sensing structure is disposed on the first substrate and on a side away from a light emitting surface of the light emitting elements. The conductive layer is disposed between the light emitting elements and the first substrate and includes contacts or at least a portion of the touch sensing structure, and the light emitting elements and the contacts are electrically connected.
    Type: Application
    Filed: August 15, 2022
    Publication date: March 9, 2023
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Jing-Xuan Chen, Cheng-Yen Yeh, Mu-Kai Kang, Sz-Kai Huang, Ming-Chang Yu
  • Publication number: 20230066074
    Abstract: The disclosure provides a display panel including a first substrate, multiple scan lines, multiple data lines, and multiple pixel structures. The scan lines and the data lines are disposed on the first substrate and intersect each other. One of the pixel structures includes an active element, a pixel electrode, a capacitor electrode, a common electrode, and a repair pattern. The active element includes a source, a drain, and a gate. The gate is electrically connected to one of the scan lines. The source is electrically connected to one of the data lines. The pixel electrode is electrically connected to the drain of the active element. The capacitor electrode is electrically connected to the pixel electrode and extends from the drain. The common electrode overlaps the pixel electrode and the capacitor electrode. The repair pattern overlaps one of the scan lines as well as the common electrode, and the pixel electrode.
    Type: Application
    Filed: August 11, 2022
    Publication date: March 2, 2023
    Applicant: HannStar Display Corporation
    Inventors: Chung Lin Chang, Hsuan-Chen Liu, Cheng-Yen Yeh, Yu-Cheng Lin, Chen-Hao Su
  • Patent number: 11573668
    Abstract: The disclosure provides a touch-sensing panel, which includes a substrate, a first mesh pattern, an insulating layer, and a second mesh pattern. The substrate has an active area and a peripheral area. The first mesh pattern is located in the active area. The insulating layer is disposed on the first mesh pattern. The second mesh pattern is located in the active area. At least a part of the second mesh pattern is disposed on the insulating layer. Each of the first mesh pattern and the second mesh pattern includes a plurality of mesh lines. A reflectivity of a surface of one of the first mesh pattern and the second pattern is smaller than a reflectivity of a surface of the other of the first mesh pattern and the second mesh pattern, and a width of each of the mesh lines of the one of the first mesh pattern and the second mesh pattern is smaller than a width of each of the mesh lines of the other of the first mesh pattern and the second mesh pattern.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: February 7, 2023
    Assignee: HannStar Display Corporation
    Inventors: Yao-Chih Chuang, Mei-Ling Chou, Ming-Liang Chen, Chih-Wei Chen, Chia-Yu Liu
  • Publication number: 20230036111
    Abstract: A touch display panel, including a pixel circuit substrate, a color filter substrate, and a display medium layer, is provided. The pixel circuit substrate includes pixel structures, data lines, touch sensing electrodes, touch signal lines, and at least one test circuit. Each pixel structure has an active element and a pixel electrode. The data lines are electrically connected to active elements. The touch sensing electrodes are overlapped with pixel electrodes. The touch signal lines are electrically connected to the touch sensing electrodes. The test circuit is electrically connected to at least part of the touch signal lines or the data lines and includes a peripheral line and first and second test pads. The first and second test pads are respectively disposed on a first side and a second side of a display area. The display medium layer is disposed between the pixel circuit substrate and the color filter substrate.
    Type: Application
    Filed: July 13, 2022
    Publication date: February 2, 2023
    Applicant: HannStar Display Corporation
    Inventors: Biing Nan Lin, Ya-Wen Lee, Hung Ling Hsieh, Jen Fu Wu
  • Patent number: 11536437
    Abstract: The backlight module includes multiple backlight units. Each backlight unit includes a first light emitting unit and multiple second light emitting units. The first light emitting unit has a first beam angle, and each second light emitting unit has a second beam angle which is narrower than the first beam angle. In a first mode, a light intensity of the first light emitting unit is equal to a first intensity, and a light intensity of the second light emitting units is equal to a second intensity. In a second mode, the light intensity of the first light emitting unit is equal to a third intensity, and the light intensity of the second light emitting units is equal to a fourth intensity. The first intensity is greater than the third intensity, and the second intensity is less than the fourth intensity.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: December 27, 2022
    Assignees: HannStar Display (Nanjing) Corporation, HannStar Display Corporation
    Inventors: Chen-Hao Su, Chia-Feng Teng, Chin-Yung Liu
  • Patent number: 11513400
    Abstract: A pixel array substrate including a substrate, a plurality of pixel structures, and a flat layer is provided. The pixel structures are correspondingly disposed in pixel regions of the substrate. At least one of pixel structure includes an active element, a reflective electrode, and an auxiliary electrode. The reflective electrode is electrically connected to the active element. The auxiliary electrode is electrically connected to the reflective electrode and the active element. A vertical projection of the reflective electrode on the substrate overlaps a vertical projection of the auxiliary electrode on the substrate. An area of the vertical projection of the reflective electrode on the substrate is not greater than an area of the vertical projection of the auxiliary electrode on the substrate. The flat layer is disposed between the auxiliary electrode and the active element. A display device by using the pixel array substrate is also provided.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: November 29, 2022
    Assignee: HannStar Display Corporation
    Inventors: Mei-Ling Chou, Yao-Chih Chuang, Chih-Wei Chen, Ming-Chang Yu, Chia-Yu Liu
  • Publication number: 20220374125
    Abstract: The present invention provides a touch display panel. The substrate includes a display region and a non-display region. The first conductive pads, the second conductive pads, the first conductive lines and the second conductive lines are disposed in the non-display region. The first conductive lines are electrically connected to the first conductive pads and the sub-pixels in the display region. The second conductive lines are electrically connected to the second conductive pads and the touch electrodes in the display region. The second conductive line includes a first line segment, a second line segment and a third line segment. The first line segment extends in a first direction and is connected to the second conductive pad. The second line segment extends from the non-display region to the display region. The third line segment extends in a second direction and is connected to the first line segment and the second line segment.
    Type: Application
    Filed: April 27, 2022
    Publication date: November 24, 2022
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Mu-Kai Kang, Jing-Xuan Chen, Cheng-Yen Yeh, Sz-Kai Huang
  • Patent number: 11506827
    Abstract: The backlight module includes the following units. Multiple first light emitting units are disposed on a top surface of a transparent substrate. A beam angle of the first light emitting units is greater than or equal to 30 degrees and less than or equal to 45 degrees. Multiple second light emitting units and a light guide plate are disposed on a bottom surface of the transparent substrate. Each second light emitting unit is disposed in a respective hole of the light guide plate. A light intensity of the first light emitting units in a first mode is smaller than that in a second mode. A light intensity of the second light emitting units in the first mode is greater than that in the second mode. In this way, the purpose of privacy protection can be achieved.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: November 22, 2022
    Assignee: HannStar Display Corporation
    Inventors: Chen-Hao Su, Chia-Feng Teng, Chin-Yung Liu
  • Patent number: 11507213
    Abstract: A touch display device includes a substrate, a plurality of scan lines, a plurality of thin film transistors and a plurality of touch electrodes. The scan lines and the thin film transistors are disposed on the substrate, and each of the thin film transistors is electrically connected to a corresponding scan line of the scan lines. The scan lines include a first scan line. The touch electrodes are disposed on the substrate, the touch electrodes include a first touch electrode and a second touch electrode, the first touch electrode is adjacent to the second touch electrode, the first scan line is disposed between the first touch electrode and the second touch electrode, and the first scan line is partially covered by the first touch electrode.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: November 22, 2022
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: I-Hsuan Chen, Mu-Kai Kang, Cheng-Yen Yeh
  • Publication number: 20220367527
    Abstract: An electronic device includes a flexible substrate and a driving component. In the flexible substrate, a first side region, a second side region and a first cutting structure are disposed in a peripheral region, wherein a display region and the first side region are separated by a first edge of the display region, the display region and the second side region are separated by a second edge of the display region, the first edge and the second edge are respectively parallel to a first direction and a second direction perpendicular to the first direction, the first cutting structure has a first endpoint and two edges separated by the first endpoint and respectively belonging to the first side region and the second side region. The driving component overlaps the flexible substrate in a top view direction perpendicular to the first direction and the second direction.
    Type: Application
    Filed: July 29, 2022
    Publication date: November 17, 2022
    Applicants: HannStar Display (Nanjing) Corporation, HANNSTAR DISPLAY CORPORATION
    Inventor: Yen-Chung Chen
  • Patent number: 11467684
    Abstract: The disclosure provides a touch display panel including a substrate and a first mesh electrode. The first mesh electrode is disposed on the substrate and includes a plurality of first extending portions, a plurality of second extending portions, and a plurality of first disconnection regions. The first extending portions are arranged along a first direction and extend in a second direction. The first direction intersects with the second direction. The second extending portions are arranged along the second direction and extend in the first direction. The first disconnection regions are arranged along the first direction and extend in the second direction. The first disconnection regions overlap the second extending portions and do not overlap the first extending portions.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: October 11, 2022
    Assignee: HannStar Display Corporation
    Inventors: Meng-Ju Li, Mei-Ling Chou, Ding-Wei Liu, Wei-Chih Hsu, Chen-Hao Su
  • Patent number: 11435843
    Abstract: A display panel and a fabrication method thereof are provided. The display panel includes pixels, data lines and scan lines. The pixels are arranged in pixel rows and pixel columns, and each pixel has subpixels. The data lines are configured to transmit data signals to the pixels, and each data line has a non-straight and continuously curved shape or a non-straight and continuously bent shape. The scan lines are configured to sequentially transmit scan signals to the pixels. The subpixels of each pixel are coupled to different scan lines, and each data line is curved or bent with respect to a unit of one pixel. Accordingly, the display panel of the invention can avoid the problems of poor image display and vertical line (V-line) defects as well as reducing power consumption.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: September 6, 2022
    Assignee: HannStar Display Corporation
    Inventors: Jing-Xuan Chen, Cheng-Yen Yeh, Mu-Kai Kang, Sz-Kai Huang
  • Publication number: 20220269366
    Abstract: A touch display device includes a substrate, a plurality of scan lines, a plurality of thin film transistors and a plurality of touch electrodes. The scan lines and the thin film transistors are disposed on the substrate, and each of the thin film transistors is electrically connected to a corresponding scan line of the scan lines. The scan lines include a first scan line. The touch electrodes are disposed on the substrate, the touch electrodes include a first touch electrode and a second touch electrode, the first touch electrode is adjacent to the second touch electrode, the first scan line is disposed between the first touch electrode and the second touch electrode, and the first scan line is partially covered by the first touch electrode.
    Type: Application
    Filed: May 10, 2022
    Publication date: August 25, 2022
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: I-Hsuan Chen, Mu-Kai Kang, Cheng-Yen Yeh
  • Patent number: 11360360
    Abstract: The present invention provides a display panel including a substrate, first pads, second pads, third pads, an integrated circuit chip, and a flexible printed circuit board. The substrate includes a display region and a non-display region. The first pads are disposed in the non-display region and include display signal pads used for transmitting display signals. The second pads are disposed in the non-display region, at least a portion of the second pads are disposed along a first direction, and the second pads are disposed closer to an edge of the substrate than the first pads. The third pads are disposed in the non-display region and along the first direction, and the third pads are electrically connected to the corresponding second pads. The integrated circuit chip covers and is electrically connected to the first pads and the second pads. The flexible printed circuit board is electrically connected to the third pads.
    Type: Grant
    Filed: June 14, 2020
    Date of Patent: June 14, 2022
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: Cheng-Yen Yeh, I-Hsuan Chen, Guang-Shiung Chao, Mu-Kai Kang