Patents by Inventor Gongtan LI

Gongtan LI 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: 20240038786
    Abstract: An array substrate and a manufacturing method thereof are provided. A metal film layer is formed on an active layer of the array substrate. The metal film layer protects the active layer from being damaged by an etchant liquid or dry etching process during patterning processing of a source electrode/a drain electrode. Afterwards, a portion of the metal film layer that corresponds to a channel of the active layer the channel is subjected to oxidizing processing to form an oxide layer to help keep the functional property of the active layer. In the entire manufacturing process of the array substrate, the active layer will not be subject to damage in subsequent processing and stability of the device can be maintained.
    Type: Application
    Filed: August 10, 2021
    Publication date: February 1, 2024
    Inventors: Gongtan LI, Shan LI, Hyunsik SEO
  • Patent number: 11855160
    Abstract: A thin film transistor structure, a gate driver on array (GOA) circuit and a display device are provided. The thin film transistor structure defines a plurality of thin film transistors by patterning an active layer. Therefore, when a defect appears in the gate insulating layer of one of the plurality of thin film transistors and a leakage path is formed, other thin film transistors will not be affected. Therefore, a problem of functional failure of a whole thin film transistor structure can be avoided.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: December 26, 2023
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Gongtan Li, Hyunsik Seo
  • Patent number: 11587955
    Abstract: A TFT backplane and a micro-LED display are provided A metal light shielding layer is placed at the lower surface of the substrate and the position of the metal light shield layer is corresponding to the active layer. This reduces the size of the side frame, which is used when assembling multiple displays in a large-size micro LED display application. This could meet the demand of large-size micro-LED display. In addition, this could further reduce the steps of depositing and patterning a conventional shield metal layer in a convention process of manufacturing the TFT. Therefore, the manufacturing steps of the TFT backplane are simplified and thus the manufacturing cost is reduced.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: February 21, 2023
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Gongtan Li, Hyunsik Seo
  • Publication number: 20220416033
    Abstract: A thin film transistor structure, a gate driver on array (GOA) circuit and a display device are provided. The thin film transistor structure defines a plurality of thin film transistors by patterning an active layer. Therefore, when a defect appears in the gate insulating layer of one of the plurality of thin film transistors and a leakage path is formed, other thin film transistors will not be affected. Therefore, a problem of functional failure of a whole thin film transistor structure can be avoided.
    Type: Application
    Filed: November 27, 2019
    Publication date: December 29, 2022
    Inventors: Gongtan LI, Hyunsik SEO
  • Publication number: 20220399376
    Abstract: An array substrate, a method for manufacturing the same, and a display panel are provided. The array substrate includes a substrate, a first metal layer, a buffer layer, and a semiconductor layer. The first metal layer includes a source electrode, a drain electrode, and a light shielding portion. The semiconductor layer is electrically connected to the source electrode through a first via hole penetrating the buffer layer, and is electrically connected to the drain electrode through a second via hole penetrating the buffer layer. The source electrode, the drain electrode, and the light shielding portion can be formed by a same yellow light process, thereby reducing a number of photomasks and a number of process steps.
    Type: Application
    Filed: June 22, 2021
    Publication date: December 15, 2022
    Inventors: Gongtan LI, Shan LI, Hyunsik SEO
  • Patent number: 11437411
    Abstract: The present invention discloses a thin film transistor (TFT) drive backplane and a Micro- light emitting diode (LED) display that by employing a structure of an oxide thin film transistor drive backplane with a high mobility can achieve fulfillment of the need for large size Micro-LED displays. Disposing the rear metal layer under the base substrate with the rear metal layer including a metal wire layer configured to connect with a drive chip and a metal light shielding layer configured to block ambient light reduces a spliced bezel of the display panel in application of large size Micro-LED displays, reduces depositing and patterning steps of the metal light shielding layer during manufacturing the thin film transistors and further reduces process steps of manufacturing a TFT drive backplane.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: September 6, 2022
    Inventors: Gongtan Li, Hyunsik Seo
  • Publication number: 20210327906
    Abstract: A TFT backplane and a micro-LED display are provided A metal light shielding layer is placed at the lower surface of the substrate and the position of the metal light shield layer is corresponding to the active layer. This reduces the size of the side frame, which is used when assembling multiple displays in a large-size micro LED display application. This could meet the demand of large-size micro-LED display. In addition, this could further reduce the steps of depositing and patterning a conventional shield metal layer in a convention process of manufacturing the TFT. Therefore, the manufacturing steps of the TFT backplane are simplified and thus the manufacturing cost is reduced.
    Type: Application
    Filed: September 9, 2019
    Publication date: October 21, 2021
    Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD
    Inventors: Gongtan Li, Hyunsik Seo
  • Publication number: 20210126016
    Abstract: The present invention discloses a TFT drive backplane and a Micro-LED display that by employing a structure of an oxide thin film transistor drive backplane with a high mobility can achieve fulfillment of the need for large size Micro-LED displays. Disposing the rear metal layer under the base substrate with the rear metal layer including a metal wire layer configured to connect with a drive chip and a metal light shielding layer configured to block ambient light reduces a spliced bezel of the display panel in application of large size Micro-LED displays, reduces depositing and patterning steps of the metal light shielding layer during manufacturing the thin film transistors and further reduce process steps of manufacturing a TFT drive backplane.
    Type: Application
    Filed: August 22, 2019
    Publication date: April 29, 2021
    Applicant: SHENZHEN CHINA OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD
    Inventors: Gongtan LI, Hyunsik SEO