Patents Assigned to HKC CORPORATION LIMITED
  • Publication number: 20230419912
    Abstract: A pixel drive circuit, in which a second voltage-stabilization circuitry is configured that assists in maintaining the potential of the control end of the drive transistor during a transition from a compensation-and-writing phase to the light-emitting phase and in a light-emitting phase. During the transition from the compensation phase to the light-emitting phase, due to a decrease of the voltage output from the first voltage-stabilization circuitry, the node voltage between the first and second voltage-stabilization circuitries will be pulled down first. By providing the second voltage-stabilization circuitry, an influence on the node voltage at the control end of the drive transistor caused due to the voltage variation at the nodes between the two circuitries will be greatly reduced, the leakage current of the two circuitries connected in series is smaller than the leakage current of the one single first voltage-stabilization circuitry in the light-emitting phase.
    Type: Application
    Filed: December 23, 2022
    Publication date: December 28, 2023
    Applicant: HKC CORPORATION LIMITED
    Inventors: Xiufeng ZHOU, Xin YUAN, Rongrong LI
  • Publication number: 20230419898
    Abstract: A pixel drive circuit, a display panel and a display device. In the pixel drive circuit, a voltage-stabilization transistor is arranged, and the voltage-stabilization transistor is provided with two control ends, each of the two control ends forms a voltage-stabilization capacitor with the active layer, thereby a new capacitor is added on the basis of the original parasitic capacitor. The new capacitor has a relatively large capacitance value. The potential variation at the control end of the drive transistor depends on the parasitic capacitor of the drive transistor, the storage capacitor at the control end of the drive transistor, and the capacitance value of the new capacitor, when the capacitive coupling effect occurs, the voltage at the control end of the drive transistor can be jointly maintained by the above three capacitors, thereby improving the effect of voltage stabilization.
    Type: Application
    Filed: December 21, 2022
    Publication date: December 28, 2023
    Applicant: HKC CORPORATION LIMITED
    Inventors: Xiufeng ZHOU, Xin Yuan, Rongrong Li
  • Publication number: 20230422572
    Abstract: Disclosed is an array substrate and a transparent organic light emitting display panel. The array substrate (1) comprises a plurality of pixel units (10), a first row sub-pixel group (10A) and a third row sub-pixel group (10C) each comprise at a first color sub-pixel (11) and a second color sub-pixel (12), and a second row sub-pixel group (10B) and a fourth row sub-pixel group (10D) each comprise a third color sub-pixel (13) and a transparent sub-pixel (14). The transparent sub-pixel (14) and the third color sub-pixel (13) are in the same row, and a plurality of the transparent sub-pixels (14) are spaced apart by the third color sub-pixels (13), preventing a visual effect of a user from being affected.
    Type: Application
    Filed: June 22, 2023
    Publication date: December 28, 2023
    Applicant: HKC CORPORATION LIMITED
    Inventors: Xingda XIA, Haijiang YUAN
  • Publication number: 20230419907
    Abstract: A pixel driving circuit, a display panel, and a display device. The pixel driving circuit includes a driving transistor, a data-writing sub-circuit; and a voltage stabilization sub-circuit. The voltage stabilization sub-circuit is coupled to a first control terminal of the driving transistor and is configured to keep a voltage at the first control terminal of the driving transistor to be stable in a reset stage. The voltage at the first control terminal of the driving transistor is kept stable through the voltage stabilization sub-circuit in the reset stage, so that the voltage at the output of the driving transistor is relatively constant, characteristics of a switching element of the driving transistor is ensured, an effect of homogeneous luminance is realized, and a display effect and a stability of displaying of the display panel are improved.
    Type: Application
    Filed: December 14, 2022
    Publication date: December 28, 2023
    Applicant: HKC CORPORATION LIMITED
    Inventors: Xiufeng ZHOU, Xin Yuan, Rongrong Li
  • Publication number: 20230420311
    Abstract: A display panel and a preparation method thereof, and a display device. The display panel includes a display main body, which includes a display area and an encapsulation area, and the display panel further has deformation detection elements, including: an electro-display module having one or more electro-display units, and a piezoelectric module positioned on a surface of at least one deformable functional layer in the display main body, and positioned in the encapsulation area. The piezoelectric module includes two or more piezoelectric units disposed at intervals on the surface of the deformable functional layer, and a voltage difference is applied between two adjacent piezoelectric units. An electro-display unit is connected in series between the two adjacent piezoelectric units. The display panel can detect in real time whether deformation occurs through the deformation detection means, thereby ensuring the encapsulation quality and display effect.
    Type: Application
    Filed: December 14, 2022
    Publication date: December 28, 2023
    Applicants: MIANYANG HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventors: Jianying ZHANG, Haijiang Yuan
  • Publication number: 20230419908
    Abstract: A pixel drive circuit, a display panel and a display device. The pixel drive circuit includes a drive transistor, a first compensation capacitor, and a second compensation capacitor. The drive transistor has a first control end, a second control end, an output end, and an input end. The drive transistor is configured as a four-terminal drive device having two control ends, and between each control end and the output end, a compensation element is arranged, so that the compensations to the threshold voltage of the front and rear channels are performed simultaneously when the drive transistor is driven. Meanwhile, each control end is equipped with a capacitor to eliminate the influence of a current difference caused by the threshold voltage of the secondary channel in the 4-terminal device.
    Type: Application
    Filed: December 19, 2022
    Publication date: December 28, 2023
    Applicant: HKC CORPORATION LIMITED
    Inventors: Xiufeng ZHOU, Xin Yuan, Rongrong Li
  • Patent number: 11852913
    Abstract: The present application discloses a manufacturing method of a display panel and a display panel. The manufacturing method includes the steps: forming a color filter layer on a substrate; confirming a colorfilter-to-be-stripped in the color filter layer; and stripping the colorfilter-to-be-stripped by using a selected stripping liquid; the color filter layer includes a first color filter, a second color filter and a third color filter; and the colorfilter-to-be-stripped includes one or two of the first color filter, the second color filter and the third color filter, and the method of stripping the colorfilter-to-be-stripped by the selected stripping liquid includes: letting the colorfilter-to-be-stripped react with the selected stripping liquid, and stripping the colorfilter-to-be-stripped by the selected stripping liquid, and forming a protective layer on the surface of the color filters except the colorfilter-to-be-stripped.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: December 26, 2023
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventor: Chung-Kuang Chien
  • Patent number: 11856814
    Abstract: The present disclosure provides a display panel and a manufacturing method for the display panel. The display panel includes a substrate, a switch assembly disposed on the substrate, and a light-sensing assembly disposed on a side of the switch assembly. The switch assembly comprises an indium gallium zinc oxide (IGZO) layer.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: December 26, 2023
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventor: En-Tsung Cho
  • Patent number: 11854481
    Abstract: A display panel includes a display area and a non-display area surrounding the display area. The display area includes a plurality of display lines and a plurality of display sub-pixels arranged in arrays. The non-display area further includes a dummy sub-pixel, a driver chip, a feedback line and a compensation line. The driver chip is used for acquiring a current signal of a light-emitting element in the dummy sub-pixel through the feedback line, and generating a compensation signal when the current signal fed back by the feedback line is not equal to the preset threshold value, and also for generating a display compensation signal when the current signal fed back by the feedback line is equal to the preset threshold value, and the display compensation signal is transmitted to the pixel driving circuit of the display sub-pixel through the display line.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: December 26, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Dujuan Yin, Haoxuan Zheng
  • Patent number: 11852912
    Abstract: A color filter substrate is disclosed, including a substrate, a black matrix layer, a first groove, and a reflective layer. The substrate includes a display area and a non-display area disposed surrounding the display area. The black matrix layer is arranged on the substrate, and includes a first black matrix layer arranged in the display area and a second black matrix layer formed in the non-display area. The first groove is defined in the second black matrix layer, and the reflective layer covers the first groove.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: December 26, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Jie Wang, Fulin Deng, Rong Tang, Jianying Zhang, Haoxuan Zheng
  • Patent number: 11854482
    Abstract: A pixel drive circuit, including a data input circuit, a switch circuit, an energy storage circuit and a light-emitting control circuit. The light-emitting control circuit has a control end connected to the data input circuit, an input connected to a first power supply, and an output connected to an anode of a light-emitting device. A cathode of the light-emitting device is connected to a second power supply. The first power supply outputs a low-potential voltage in a reset phase, and outputs a first high-potential voltage in a compensation phase, a writing phase and a light-emitting phase. The second power supply outputs a second high-potential voltage in the reset, compensation and writing phases, and output a low-potential voltage in the light-emitting phase. The switch circuit is switched on in the reset, compensation and light-emitting phases, and is switched off in the writing phase.
    Type: Grant
    Filed: July 21, 2023
    Date of Patent: December 26, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Zhaoyang Lu, Rongrong Li
  • Patent number: 11854472
    Abstract: A pixel driving circuit and a display panel are provided. The pixel driving circuit, including a first-color subpixel, a second-color subpixel, and a third-color subpixel, is configured to drive a pixel unit. The pixel driving circuit includes a first driving unit, a second driving unit, and a third driving unit. The first driving unit is configured to drive according to a first voltage signal the first-color subpixel. The second driving unit is configured to drive according to the first voltage signal the second-color subpixel. The third driving unit is configured to drive according to the first voltage signal the third-color subpixel. The first driving unit at least includes a first capacitor, the second driving unit at least includes a second capacitor, the third driving unit at least includes a third capacitor, and at least one of the first capacitor, the second capacitor, and the third capacitor has a different capacitance.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: December 26, 2023
    Assignees: CHUZHOU HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventors: Lizhi Zhang, Long Zhu, Baohong Kang
  • Patent number: 11854488
    Abstract: A pixel driving circuit, a display panel and a display device. The pixel driving circuit includes a driving and compensation sub-circuit; a data writing sub-circuit; and a coupling capacitance. A ratio of a capacitance value of the coupling capacitance to the sum of the capacitance value of the coupling capacitance and the capacitance value of the storage capacitance is configured to be greater than a preset value. The preset value is determined based on the preset maximum luminance fluctuation of the display panel. In the present application, the luminance fluctuation is adjusted by adjusting the correlation relationship between the capacitance value of the coupling capacitance and the capacitance value of the storage capacitance. Thus, a new capacitance configuration is provided, the panel can be adjusted at a capacitance level, and a better display effect is provided.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: December 26, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Xiufeng Zhou, Xin Yuan, Haijiang Yuan
  • Patent number: 11854487
    Abstract: A pixel drive circuit, a display panel and a display device. The pixel drive circuit includes a drive transistor, a first compensation capacitor, and a second compensation capacitor. The drive transistor has a first control end, a second control end, an output end, and an input end. The drive transistor is configured as a four-terminal drive device having two control ends, and between each control end and the output end, a compensation element is arranged, so that the compensations to the threshold voltage of the front and rear channels are performed simultaneously when the drive transistor is driven. Meanwhile, each control end is equipped with a capacitor to eliminate the influence of a current difference caused by the threshold voltage of the secondary channel in the 4-terminal device.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: December 26, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Xiufeng Zhou, Xin Yuan, Rongrong Li
  • Patent number: 11854501
    Abstract: The present disclosure provides a backlight driving circuit including a power supply module and a current adjustment module. The current adjustment module detects the brightness of the first light-emitting columns and/or the second light-emitting columns to obtain detection current, and compares the detection current with a mode switching current. The current adjustment module controls one first light-emitting column and one second light-emitting column to connect with one first wire simultaneously, or controls one first light-emitting column to connect with one second connecting wire and controls one second light-emitting column to connect with another second connecting wire.
    Type: Grant
    Filed: June 9, 2023
    Date of Patent: December 26, 2023
    Assignees: MIANYANG HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventors: Guofei Ji, Dalei Zhang, Haoxuan Zheng
  • Publication number: 20230408866
    Abstract: Disclosed are a backlight module and a curved display device. The backlight module includes a backplane and a backlight. The backplane includes a backplane body and two arc fixing components. The backplane body is provided with two opposite arc sides and each arc fixing component is correspondingly detachably installed at each arc side to restrict a curvature of the backplane body. A mounting groove is formed by the cooperative enclosure of two arc fixing components and an inner surface of the backplane body. The backlight is provided into the mounting groove.
    Type: Application
    Filed: December 9, 2022
    Publication date: December 21, 2023
    Applicants: BEIHAI HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventors: Li WU, HSU KANG LO, Haijiang YUAN
  • Publication number: 20230408756
    Abstract: A display apparatus and a display method are provided. The display apparatus includes a display panel, a display film assembly, a privacy film assembly, and a light source. The display film assembly includes a first light guide plate and an optical film. The optical privacy film assembly includes a second light guide plate and a privacy film. The privacy film is configured to adjust divergent lights exiting the second light guide plate into privacy lights at a preset angle. The light source is configured to emit incident lights to be selectively irradiated to the first light guide plate or the second light guide plate, so that the display apparatus is able to switch between a normal display mode and a privacy display mode.
    Type: Application
    Filed: December 28, 2022
    Publication date: December 21, 2023
    Applicant: HKC Corporation Limited
    Inventors: Li WU, Baohong KANG
  • Patent number: 11847945
    Abstract: Provided herein is a circuit for ageing display panel, including an ageing signal input circuit, a power input circuit and a power output circuit, in which the ageing signal input circuit and the power input circuit are independently connected to the power output circuit, and the power output circuit is connected to a load; the ageing signal input circuit is configured to receive an ageing signal and output the ageing signal to the power output circuit; the power input circuit is configured to provide a supply voltage for the power output circuit; and the power output circuit is configured to output the received supply voltage to the load.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: December 19, 2023
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventor: Wenxin Li
  • Patent number: 11846849
    Abstract: A curved display panel and a display device are disclosed. The curved display panel includes a sealant, a first substrate, a second substrate, and at least two sets of buffer members that are respectively disposed along both sides of the curved display panel in a bending direction and between the sealant and a display region. The buffer members are made of an elastic material, and include a first fixing member arranged between the sealant and the display region and connected to the first substrate, and a second fixing member arranged between the first fixing member and the sealant and connected to the second substrate. Before the curved display panel is bent, one side of the first fixing member abuts one side of the second fixing member. After the curved display panel is bent, the first and the second fixing member are pressed against each other.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: December 19, 2023
    Assignees: MIANYANG HKC OPTOELECTRONICS TECHNOLOGY CO., LTD, HKC CORPORATION LIMITED
    Inventors: Hui Li, Rongrong Li
  • Patent number: 11846405
    Abstract: A backlight module and a display device are disclosed. The backlight module includes a light board, and multiple light-emitting elements arranged at intervals on the light board. The backlight module further includes a diffusion plate arranged corresponding to the position of the light board and on the side of a light emitting surface of the light board. The diffusion plate includes: multiple blocking walls arranged at intervals on the side of the planar portion adjacent to the light board; and a planar portion arranged parallel to the light board. The blocking walls are perpendicular to the planar portion, and each blocking wall is arranged corresponding to the gap between two adjacent light-emitting elements. The height of the blocking wall is equal to the distance between the diffusion plate and the light board, and the lower part of the blocking wall adjacent to the light board is opaque.
    Type: Grant
    Filed: August 15, 2023
    Date of Patent: December 19, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Mei Zhang, Haoxuan Zheng