Patents by Inventor Guanghui Liu

Guanghui Liu 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).

  • Publication number: 20230309342
    Abstract: A display panel, a pixel driving circuit, and a display device are provided. Driving transistors include a first transistor and a second transistor connected in parallel. An absolute value of a threshold voltage of the first transistor is greater than an absolute value of a threshold voltage of the second transistor. A carrier mobility of the first transistor is greater than a carrier mobility of the second transistor. A driving current is affected by characteristics of the second transistor and an increase speed is slowed down, which improves a problem of color unevenness of the display panel at low brightness.
    Type: Application
    Filed: April 13, 2022
    Publication date: September 28, 2023
    Inventors: Hong CHENG, Yanqing GUAN, Chao TIAN, Fei AI, Guanghui LIU
  • Publication number: 20230288982
    Abstract: An adaptive VR system is provided, which includes a headset and a handle, the headset comprises a headset camera, a control end, and an electromagnetic receiving module, and the control end comprises a control end database and a data selection module; the handle comprises a handle camera and an electromagnetic transmitting module; the headset camera is configured to acquire an external environment image in a headset coordinate system; the handle camera is configured to acquire an external environment image in a handle coordinate system; the control end database is configured to store the external environment image of the handle coordinate system; the data selection module is configured to determine a tracking mode used for tracking the handle, the tracking mode comprising optical tracking; and the electromagnetic receiving module is connected to the data selection module.
    Type: Application
    Filed: August 10, 2022
    Publication date: September 14, 2023
    Inventors: Xiuzhi ZHANG, Hongwei ZHOU, Guanghui LIU, Hengjiang GUO
  • Patent number: 11754835
    Abstract: The embodiments of the disclosure relate to an image acquisition method, a handle device, a head-mounted device and a head-mounted system. The handle device comprises a shell and a control module arranged in the shell. A switch control end of an infrared circuit is connected with the control module, and infrared light beads of the infrared circuit penetrate outwards through the shell; and a switch control end of a visible light circuit is connected with the control module, and visible light strips of the visible light circuit penetrate outwards through the shell. Through visible light and infrared light set on the handle, the position of the handle device can be judged, and the tracking accuracy is extremely high.
    Type: Grant
    Filed: August 4, 2022
    Date of Patent: September 12, 2023
    Assignee: QINGDAO PICO TECHNOLOGY CO., LTD.
    Inventors: Xiuzhi Zhang, Hongwei Zhou, Guanghui Liu, Hengjiang Guo
  • Publication number: 20230274701
    Abstract: A gate driving circuit and a display device are provided. The gate driving circuit includes electrically connected multi-stage driving units. The driving unit of each stage includes an input module, an output module electrically connected with the input module, a pull-down module electrically connected with the output module, and a pull-down control module electrically connected with the pull-down module. The output module is electrically connected to a stage transmission signal output terminal, and the pull-down module is electrically connected to a first control signal terminal.
    Type: Application
    Filed: December 15, 2021
    Publication date: August 31, 2023
    Inventors: Chao TIAN, Yanqing GUAN, Guanghui LIU, Fei AI
  • Patent number: 11733771
    Abstract: Provided is a high-precision anti-interference VR system, including a data selection module, a headset, and a handle matched with the headset, the data selection module selects and invokes an optical tracking module group and an electromagnetic tracking module group according to an optical FOV range; the optical tracking module group includes an optical display module and an optical tracking module, the optical display module emits a physical signal by adjusting on-off and brightness thereof; the optical tracking module obtains the physical signal emitted by the optical display module, and converts the physical signal into tracking information of the handle; the electromagnetic tracking module group includes an electromagnetic emission module and an electromagnetic receiving module, the electromagnetic emission module generates an electromagnetic signal through a driving circuit, and transmits the electromagnetic signal; and the electromagnetic receiving module receives the electromagnetic signal to complete
    Type: Grant
    Filed: August 11, 2022
    Date of Patent: August 22, 2023
    Assignee: QINGDAO PICO TECHNOLOGY CO., LTD.
    Inventors: Xiuzhi Zhang, Hongwei Zhou, Guanghui Liu, Hengjiang Guo
  • Patent number: 11709303
    Abstract: The present application provides a backlight module and a display device. The backlight module includes a first backlight assembly and a second backlight assembly. The second backlight assembly is provided with a backlight hole, and at least a portion of the first backlight assembly is accommodated in the backlight hole. The first backlight assembly includes a first light source and a light guide element. The light guide element is used to guide a light beam from the first light source, which enters the light guide element, out of the backlight hole, so that the light is evenly distributed in the backlight hole, and a full-screen display design of the display device is realized.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: July 25, 2023
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Peng Zhang, Guanghui Liu, Chao Wang, Jiedong Han
  • Patent number: 11676921
    Abstract: A driving chip and a display panel are provided. The display panel includes the driving chip, and a plurality of first bonding pads and a plurality of second bonding pads disposed at two opposite sides out of the driving chip. The driving chip includes a group of first input leads and a group of second input leads. There is an interval between the group of first input leads and the group of second input leads. The group of first input leads is disposed near the first bonding pads, and the group of second input leads is disposed near the second bonding pads.
    Type: Grant
    Filed: October 24, 2021
    Date of Patent: June 13, 2023
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yantao Lu, Guanghui Liu, Chao Wang
  • Publication number: 20230178564
    Abstract: A display panel and a display device are provided. The display panel includes an active layer, a gate electrode layer, and a metal layer. By forcibly pulling down an electrical potential of a scan signal in a first scan line when a pulse rising edge of the scan signal in the second scanning line arrives, an electrical potential falling time of each scan signal in a display area can be shortened. At the same time, a control line is constructed to at least partially overlaps an electrical potential transmission line in a thickness direction of the display panel, to increase an aperture ratio as much as possible.
    Type: Application
    Filed: December 15, 2021
    Publication date: June 8, 2023
    Inventors: Yuan SUN, Chao WANG, Guanghui LIU, Liwang LIU
  • Patent number: 11671692
    Abstract: The present invention discloses a display device including an optical film including a through hole; a display panel disposed on a surface of one side of the optical film, wherein the display panel includes a transparent area corresponding to the through hole; a camera including a camera lens, wherein the camera is inserted into the through hole and faces the transparent area; and a plurality of LED chips evenly arranged around the camera lens, wherein the LED chips are disposed in the through hole and between the camera and the transparent area.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: June 6, 2023
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventors: Shaojun Hou, Xindong Mei, Chao Wang, Guanghui Liu, Zhifu Li
  • Patent number: 11668971
    Abstract: The present invention provides a backlight and a display apparatus. The backlight comprises a substrate and at least one light source. The substrate has a first surface and a second surface along a thickness direction of the substrate. The first surface and the second surface are both continuous. The first surface has at least one light incident surface in the edge area. A light source is opposed to or in contact with the light incident surface to provide the substrate with light through the light incident surface.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: June 6, 2023
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Bingkun Yin, Guanghui Liu
  • Patent number: 11662592
    Abstract: Provided are a head-mounted display device and a head-mounted display system. The head-mounted display device includes: a processor, a first interface, a transfer switch, a wireless communication module and a display screen, the wireless communication module is configured to be in wireless communication connection with a hand-held controller; the processor is configured to control the transfer switch to switch for communication between the first interface and the display screen when detecting that the first interface is connected to a host, and send first position data and second position data to the host via the first interface, so as to allow the host to render an image according to the first position data and the second position data and to output and display a rendered image on the display screen via the first interface.
    Type: Grant
    Filed: August 4, 2022
    Date of Patent: May 30, 2023
    Assignee: QINGDAO PICO TECHNOLOGY CO., LTD.
    Inventors: Xiuzhi Zhang, Hongwei Zhou, Guanghui Liu, Hengjiang Guo
  • Patent number: 11662632
    Abstract: A display panel is provided and includes an array substrate and a display region located on a surface of the array substrate, wherein a portion of the array substrate not occupied by the display region forms a bezel, and a driving chip and a flexible circuit board are bound in the bezel; wherein at least one a protrusion is formed at an end of the bezel away from the display region, the driving chip is located between an edge of the protrusion and an edge of the display region; and a portion of the flexible circuit board is bent to a back of the array substrate via an edge of an indent on at least one lateral side of the protrusion.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: May 30, 2023
    Inventors: Yantao Lu, Guanghui Liu, Chao Wang, Jiakuai Bian
  • Patent number: 11662630
    Abstract: A display panel and an electronic device are provided. The display panel includes a first display area and a second display area. The first display area includes a first liquid crystal layer and a driving circuit layer. The driving circuit layer includes a first driving unit group and a second driving unit. The first driving unit group is configured to drive the first liquid crystal layer. The second display area includes the second liquid crystal layer and the transparent connection layer, and the second driving unit group drives the second liquid crystal layer through the transparent connection layer, so to complete the display area of the display panel.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: May 30, 2023
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Weihong Yin, Guanghui Liu, Chao Wang
  • Patent number: 11662617
    Abstract: A display panel is provided. The display panel comprises a display screen, a first backlight module, a second backlight module, and a fingerprint sensor, wherein the second backlight module has a fingerprint identification mode and a display mode. In the fingerprint identification mode, light reaches the fingerprint sensor through the second backlight module for fingerprint identification, and in the display mode, the first backlight module and the second backlight module provide uniform backlight to the display screen, thus realizing compatibility of functions of under-screen fingerprint identification and display.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: May 30, 2023
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xindong Mei, Shaojun Hou, Chao Wang, Guanghui Liu, He Jiang, Quan Tang
  • Publication number: 20230152614
    Abstract: A display device provided includes a display panel, a first backlight module, a second backlight module, a light sensor, and a viewing angle adjusting component. The first backlight module includes an optical element, and the viewing angle adjusting component is disposed corresponding to a display sensing area. When the optical element is in a fog state, the viewing angle adjusting component reduces an exit angle of backlight. When the optical element is in a transparent state, external light enters the light sensor through the viewing angle adjusting component and the first backlight module, which improves uniformity of backlight viewing angle.
    Type: Application
    Filed: March 11, 2021
    Publication date: May 18, 2023
    Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventors: Rui HE, Wei CHENG, Changchih HUANG, Guanghui LIU
  • Publication number: 20230137477
    Abstract: A light guide plate including a substrate; a first refractive index layer; a second refractive index layer stacked on the first refractive index layer, and a reflective layer disposed on a surface of the substrate opposite to the first refractive index layer, wherein the first refractive index layer is a structure of a plurality of prisms distributed on an emergence surface of the substrate, forming prism-structured netted dots. Through disposing the prism-structured netted dots, the reflective layer, and the second refractive index layer on the light guide plate substrate, and using refraction and reflection of each layer to realize adjustment of emergence angle, a function of an independent diffuser, prism, and reflector is realized. The light guide plate is used as CF or TFT substrate to manufacture a liquid crystal display, and a backlight module is integrated into a liquid crystal panel, decreasing a thickness of a liquid crystal module.
    Type: Application
    Filed: August 28, 2020
    Publication date: May 4, 2023
    Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventors: Bingkun YIN, Changchih HUANG, Guanghui LIU
  • Publication number: 20230136083
    Abstract: The present application discloses a liquid crystal display panel and a method of manufacturing the same. The liquid crystal display panel includes a pixel area, and further includes: a glass substrate serving as a light guide plate; a reflective layer disposed on a side of the light guide plate; a grating structure disposed on a side of the light guide plate away from the reflective layer, and corresponding to the pixel area; a planarization layer disposed on a side of the grating structure away from the light guide plate; and a thin-film transistor layer disposed on a side of the planarization layer away from the light guide plate.
    Type: Application
    Filed: August 27, 2020
    Publication date: May 4, 2023
    Inventors: Bingkun YIN, Changchih HUANG, Guanghui LIU
  • Publication number: 20230111777
    Abstract: A liquid crystal display device and an electronic equipment are provided. The liquid crystal display device includes a liquid crystal display panel and an adjustable diffusion sheet configured to improve a light transmissive rate of a light transmissive region. The adjustable diffusion sheet includes a first sub-section corresponding to the position of the light transmissive region. When the light transmissive region is in a transparent state, the first sub-section is in a transparent state. When the light transmissive region is in a display state, the first sub-section is in a fog state.
    Type: Application
    Filed: August 27, 2020
    Publication date: April 13, 2023
    Applicant: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Shaojun Hou, Quan Tang, Wei Cheng, Guanghui Liu
  • Publication number: 20230094885
    Abstract: A display panel is provided. The display panel includes a data line and a transistor electrically connected to the data line, and the transistor includes a patterned active layer. The patterned active layer of the transistor is disposed in a region corresponding to the data line.
    Type: Application
    Filed: February 24, 2021
    Publication date: March 30, 2023
    Applicant: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Wenqiang Yu, Chao Wang, Guanghui Liu
  • Publication number: 20230097654
    Abstract: A display device includes an optical film having a via hole; a display panel disposed on a surface of a side of the optical film, and the display panel comprises a transparent area opposite to the via hole; a camera inserted into the via hole and facing the transparent area; and a transparent light source located within the via hole and between the camera and the transparent area.
    Type: Application
    Filed: April 3, 2020
    Publication date: March 30, 2023
    Applicant: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Shaojun HOU, Xindong MEI, Chao WANG, Guanghui LIU