Patents by Inventor Jianchang CAI

Jianchang CAI 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).

  • Patent number: 11967274
    Abstract: A display substrate includes a first display region, a second display region, and a frame region. Light-emitting devices include first light-emitting devices in the first display region and second light-emitting devices in the second display region. Pixel drive circuits include first pixel drive circuits in the frame region and second pixel drive circuits in the second display region. The first pixel drive circuits are electrically connected to the first light-emitting devices. The second pixel drive circuits are electrically connected to the second light-emitting devices. Each of shift registers cascaded in the frame region is connected to the first pixel drive circuits and the second pixel drive circuits which are electrically connected to one row of first light-emitting devices and the same one row of second light-emitting devices respectively.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: April 23, 2024
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qiwei Wang, Kaipeng Sun, Jianchang Cai, Chao Wu, Yuanjie Xu, Yao Huang
  • Publication number: 20240107829
    Abstract: A display panel and a display device are provided. The display panel includes: a base substrate, having a first display region and a second display region, the first display region is located at at least one side of the second display region; a plurality of first pixel circuits, located in the first display region; a plurality of first light-emitting elements, located in the first display region to each drive at least one first light-emitting element; a plurality of second pixel circuits, located in the first display region; a plurality of second light-emitting elements, located in the second display region to each drive at least one second light-emitting element; and a plurality of conductive lines, the second pixel circuit is connected to the second light-emitting element through at least one conductive line.
    Type: Application
    Filed: July 19, 2021
    Publication date: March 28, 2024
    Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lili DU, Yao HUANG, Kaipeng SUN, Benlian WANG, Jianchang CAI
  • Publication number: 20240078936
    Abstract: A display panel and a display device are provided. In the display panel, a first display region includes first light-emitting units, and a second display region includes second light-emitting units, first pixel circuits and second pixel circuits, the first pixel circuit is connected with the first light-emitting unit, and the second pixel circuit is connected with the second light-emitting unit. The first display region includes a first region and a second region on a side of the first region away from the second display region, the second display region includes a third region and a fourth region on a side of the third region close to the first display region, the first light-emitting unit in the first region is connected with the first pixel circuit in the third region, the first light-emitting unit in the second region is connected with the first pixel circuit in the fourth region.
    Type: Application
    Filed: July 21, 2021
    Publication date: March 7, 2024
    Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yudiao CHENG, Weiyun HUANG, Yuanyou QIU, Jianchang CAI, Lili DU, Chi YU
  • Publication number: 20240071302
    Abstract: Provided is a display panel. The display panel includes: a substrate, at least one row of light-emitting elements disposed on the substrate, a plurality of pixel drive circuits, a plurality of connection lines, and a plurality of compensation portions. A length of a first connection line electrically connected to a first pixel drive circuit is less than a length of a second connection line electrically connected to a second pixel drive circuit. A capacitance of the first connection line is compensated by electrically connecting the compensation portion to the first connection line, and thus a difference between the capacitance of the first connection line and a capacitance of the second connection line is reduced.
    Type: Application
    Filed: May 12, 2022
    Publication date: February 29, 2024
    Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yanwei LU, Bangqing XIAO, Jianchang CAI, Benlian WANG, Yao HUANG, Yue LONG
  • Publication number: 20240057387
    Abstract: Provided is a display panel. The display panel includes a first light-emitting element disposed in a first display region, and a first pixel circuit and a compensation capacitor that are disposed in a peripheral region. The first pixel circuit may be coupled to the first light-emitting element by a first connecting wire. A first metal layer in the compensation capacitor may be coupled to a target node, a second metal layer may be coupled to a power supply end, and the target node is a node via which the first connecting wire is coupled to the first pixel circuit.
    Type: Application
    Filed: April 30, 2021
    Publication date: February 15, 2024
    Inventors: Jianchang Cai, Yue Long, Qiwei Wang, Yuanjie Xu, Yao Huang, Kaipeng Sun
  • Publication number: 20240021146
    Abstract: A display substrate includes a first display region, a second display region, and a frame region. Light-emitting devices include first light-emitting devices in the first display region and second light-emitting devices in the second display region. Pixel drive circuits include first pixel drive circuits in the frame region and second pixel drive circuits in the second display region. The first pixel drive circuits are electrically connected to the first light-emitting devices. The second pixel drive circuits are electrically connected to the second light-emitting devices. Each of shift registers cascaded in the frame region is connected to the first pixel drive circuits and the second pixel drive circuits which are electrically connected to one row of first light-emitting devices and the same one row of second light-emitting devices respectively.
    Type: Application
    Filed: October 30, 2020
    Publication date: January 18, 2024
    Inventors: Qiwei WANG, Kaipeng SUN, Jianchang CAI, Chao WU, Yuanjie XU, Yao HUANG
  • Publication number: 20230337465
    Abstract: A display panel and a display device are disclosed. The display panel includes: a base substrate; a pixel unit, located on the base substrate, the pixel unit including a pixel circuit and a light-emitting element, wherein the pixel circuit is configured to drive the light-emitting element, the pixel circuit includes a driving transistor, and the driving transistor includes a gate electrode; a first gate signal line, connected to the gate electrode of the driving transistor; a constant voltage line, configured to provide a first constant voltage to the pixel circuit; and a shield electrode, connected to the constant voltage line, wherein an orthographic projection of the first gate signal line on the base substrate falls within an orthographic projection of the shield electrode on the base substrate.
    Type: Application
    Filed: February 20, 2021
    Publication date: October 19, 2023
    Inventors: Yao HUANG, Weiyun HUANG, Jianchang CAI
  • Publication number: 20230306904
    Abstract: Provided is a display panel. The display panel includes: a base substrate; a plurality of pixel units disposed on the base substrate, wherein the pixel unit includes a pixel circuit and a light-emitting element; a constant voltage line, configured to provide a constant voltage to the pixel circuit; and a plurality of shield electrodes, wherein at least one of the plurality of shield electrodes corresponds to at least one pixel circuit, an orthographic projection of the at least one of the plurality of shield electrodes on the base substrate is at least partially overlapped with an orthographic projection of the corresponding at least one pixel circuit on the base substrate, at least part of the plurality of shield electrodes are connected, and the at least part of the plurality of shield electrodes are electrically connected to the constant voltage line.
    Type: Application
    Filed: January 10, 2022
    Publication date: September 28, 2023
    Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yao HUANG, Jianchang CAI, Yue LONG
  • Publication number: 20230148233
    Abstract: A display substrate includes: a base substrate having a display region and a peripheral region surrounding the display region; a plurality of sub-pixels in the display region; a plurality of data lines in the display region, electrically coupled to the plurality of sub-pixels respectively, and configured to provide a data signal to the plurality of sub-pixels respectively; a plurality of pads in the peripheral region, wherein at least a portion of the plurality of pads are configured to provide a data signal to the plurality of data lines respectively; at least one test data signal line in the peripheral region; at least one test control signal line in the peripheral region; and a plurality of test units in the peripheral region and on a side of the plurality of pads away from the display region.
    Type: Application
    Filed: August 7, 2020
    Publication date: May 11, 2023
    Inventors: Feng WEI, Lili DU, Hongjun ZHOU, Jianchang CAI
  • Publication number: 20230030745
    Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate; a display region, on the base substrate and including a plurality of pixel driving units, each of the plurality of pixel driving units includes a threshold compensation transistor, a first light-emitting control transistor, an active layer of the threshold compensation transistor includes a first channel region corresponding to the first gate electrode, a second channel region corresponding to the second gate electrode, and an intermediate region between the first channel region and the second channel region; and a plurality of light shielding patterns.
    Type: Application
    Filed: September 10, 2021
    Publication date: February 2, 2023
    Inventors: Kaipeng SUN, Binyan WANG, Jianchang CAI, Chao WU, Yue LONG, Yao HUANG
  • Publication number: 20230015549
    Abstract: A display panel, a circuit board and a display device are provided, belonging to the field of displays. The display panel has a display region and a binding region which is at least on one side of the display region, and the display panel includes: a substrate; a plurality of signal pins on the substrate and in the binding region, the signal pins being arranged at intervals in a first direction and being connected to the circuit board; and at least one non-signal pin on the substrate and between two adjacent signal pins.
    Type: Application
    Filed: May 13, 2021
    Publication date: January 19, 2023
    Inventors: Jianchang CAI, Chao WU, Feng WEI, Yuanyou QIU
  • Publication number: 20230012412
    Abstract: A display substrate, a preparation method therefor, and a display apparatus.
    Type: Application
    Filed: September 10, 2021
    Publication date: January 12, 2023
    Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yue LONG, Yuanyou QIU, Jianchang CAI, Chao WU, Xingliang XIAO
  • Publication number: 20220383784
    Abstract: The embodiments of the present disclosure provide a display substrate, a display panel and a manufacturing method thereof. The display substrate includes a body portion and a to-be-cut portion arranged on at least one side of the body portion, and the body portion and the to-be-cut portion are in a same plane and connected to have a one-piece structure; the display substrate further includes a plurality of test electrodes, some test electrodes are arranged on the body portion, and the other test electrodes are arranged on the to-be-cut portion. The display panel includes the body portion in the display substrate.
    Type: Application
    Filed: May 12, 2021
    Publication date: December 1, 2022
    Inventors: Yue LONG, Jianchang CAI, Feng WEI, Chao WU
  • Publication number: 20220376028
    Abstract: A display substrate and a display device. The present display substrate includes a first to a third display region. The first display region includes first pixel repeating units, and allows light from the first side to at least partially penetrate to the second side. The second display region includes second and fourth pixel repeating units. The third display region includes third pixel repeating units. Each first pixel repeating unit is electrically connected to the corresponding fourth pixel repeating unit by means of t transparent connecting traces. The pitch of the first and second pixel repeating units is b1, and the pitch of the third pixel repeating units is b2, the pitch of the transparent connecting traces is D, and the maximum number s of first pixel repeating units in the first direction satisfying s?2*Floor(b1/((D*t))).
    Type: Application
    Filed: May 17, 2021
    Publication date: November 24, 2022
    Inventors: Yao HUANG, Guobo YANG, Jianchang CAI, Chao WU, Yuanyou QIU, Binyan WANG
  • Publication number: 20220320851
    Abstract: Disclosed are an electrostatic protection circuit, a display substrate and a display apparatus. The electrostatic protection circuit includes: a plurality of first transistors (11) on a base substrate, each of which includes a gate, an active layer (112), a first electrode (113), a second electrode (114) and a connection part (115). Gates of the first transistors (11) are connected to each other to form a control line (12). The first electrode (113) of each first transistor (11) is electrically connected to a panel crack detect line (PL), the connection part (115) is connected between the first electrode (113) and the second electrode (114), and the active layer (112) and the gate of each first transistor (11) are arranged in an overlapping manner and insulated and separated from each other to form a first capacitor. The control line (12) is electrically connected to a first power supply line (VSS).
    Type: Application
    Filed: June 15, 2021
    Publication date: October 6, 2022
    Inventors: Jianchang CAI, Yue LONG, Yudiao CHENG, Hongjun ZHOU, Lili DU
  • Publication number: 20220320187
    Abstract: Disclosure provides a display substrate, a display panel and a display device. The display substrate includes a substrate, a drive circuit layer and a light emitting device layer sequentially on the substrate, a display region of the substrate includes first and second display regions on a side of the first display region, light transmittance of the first display region is larger than that of the second display region; the drive circuit layer includes first pixel circuits in bezel region around the display region, second pixel circuits in the second display region; the light emitting device layer includes first light emitting devices, second light emitting devices; each first light emitting device is electrically connected with each first pixel circuit; each second light emitting device is electrically connected with each second pixel circuits; a density of the first light emitting devices is same as a density of the second light emitting devices.
    Type: Application
    Filed: September 30, 2020
    Publication date: October 6, 2022
    Inventors: Weiyun HUANG, Jianchang CAI, Pinchao GU, Yuanyou QIU, Yao HUANG
  • Publication number: 20220320146
    Abstract: A display panel, a manufacturing method thereof and a display device. The display panel includes a first region and a second region. The second region includes a driving circuitry layer and a first light-emitting unit located on a base substrate, the first region includes a plurality of second light-emitting units located on the base substrate, the second light-emitting unit is electrically coupled to the driving circuitry layer through a transparent conductive layer, the transparent conductive layer includes at least two conductive sub-layers laminated one on another and insulated from each other, each conductive sub-layer includes at least one transparent conductive line, and each transparent conductive line is coupled to a corresponding second light-emitting unit.
    Type: Application
    Filed: June 3, 2021
    Publication date: October 6, 2022
    Applicants: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Weiyun HUANG, Jianchang CAI, Xingliang XIAO, Yao HUANG, Yuanyou QIU, Zhong LU
  • Publication number: 20220320251
    Abstract: A display substrate and a display device are provided. The first display region includes a first light-emitting element, and allows light from the first side to be at least partially transmitted to the second side. The first winding portion of the first signal line extends along a curve, the first winding portion, the first bending portion, and the first connecting portion are located in the second display region. The first signal line is configured to transmit a first driving signal to the first pixel circuit to drive the first light-emitting element to emit light. The second signal line is configured to transmit a second driving signal to the second pixel circuit and the third pixel circuit to drive the second light-emitting element and the third light-emitting element to emit light. The third signal line is floating, and is in the second display region and extends along the first direction.
    Type: Application
    Filed: April 15, 2021
    Publication date: October 6, 2022
    Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jianchang CAI, Lili DU, Binyan WANG, Yuanyou QIU, Yudiao CHENG, Guobo YANG
  • Patent number: 11462492
    Abstract: A substrate includes a first base, a pixel defining layer and spacers. The pixel defining layer disposes above the first base and has a plurality of openings. The pixel defining layer includes a first pixel defining sub-layer and a second pixel defining sub-layer stacked in a direction away from the first base. The spacers dispose on a surface of the pixel defining layer facing away from the first base. The second pixel defining sub-layer includes a first conductive material doped at least in a surface of the second pixel defining sub-layer facing away from the first base, the spacers include a second conductive material doped at least in surfaces of the spacers facing away from the first base.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: October 4, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Wei Zhang, Peng Cao, Longhui Xue, Jianchang Cai
  • Publication number: 20220310717
    Abstract: The present disclosure relates to a display panel and a display device. The display panel includes a base substrate with a display area and a non-display area surrounding the display area, the display area including a first display sub-area and a second display sub-area; a plurality of first light emitting elements formed on the base substrate and located in the first display sub-area; and a plurality of first pixel circuits formed on the base substrate and located in at least one of the second display sub-area and the non-display area, where the first pixel circuits are electrically connected to the first pixel electrodes of the first light emitting elements through a conductive wire.
    Type: Application
    Filed: October 27, 2020
    Publication date: September 29, 2022
    Inventors: Kaipeng SUN, Yue LONG, Jianchang CAI, Weiyun HUANG, Qiwei WANG, Benlian WANG