Patents by Inventor Dongfang Wang

Dongfang Wang 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: 11386820
    Abstract: A method of detecting threshold voltage shift and a threshold voltage shift detection device are provided. The method is applied to a pixel driving circuit which I is electrically coupled to a control line, a voltage line and a detection node, respectively. The method includes: in a detection cycle including a setting phase and a detection phase, in the setting phase, controlling a transistor included in the pixel driving circuit to be in a biased state; in the detection phase, providing a preset control voltage signal to the control line, providing a preset voltage signal to the voltage line, and determining a threshold voltage shift state of the transistor according to an electric potential of the detection node.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: July 12, 2022
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangyao Li, Dongfang Wang, Jun Wang, Haitao Wang, Chaowei Hao, Bo Feng, Rong Liu, Wei Cai, Biao Luo, Xuechao Sun, Xuehai Gui, Qibin Liang, Yanfei Wan, Jin Su
  • Patent number: 11380796
    Abstract: The disclosure relates to a thin film transistor. The thin film transistor may include a substrate, an active layer on the substrate, a gate on the active layer, and a source and a drain. The active layer may include a first conducting region, a second conducting region, and a channel region between the first conducting region and the second conducting region. An orthographic projection of the source and an orthographic projection of the drain on the substrate may cover at least an orthographic projection of a first conducting region and an orthographic projection of a second conducting region on the substrate.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: July 5, 2022
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tongshang Su, Dongfang Wang, Jun Liu, Guangyao Li, Wei Li, Qinghe Wang, Chao Wang, Tao Sun
  • Patent number: 11355647
    Abstract: A thin film transistor includes an active layer, a source electrode and a drain electrode. The active layer includes a conductive region and the conductive region is between the source electrode and the drain electrode and is spaced apart from at least one of the source electrode and the drain electrode.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: June 7, 2022
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yingbin Hu, Ce Zhao, Dongfang Wang, Bin Zhou, Jun Liu, Yuankui Ding, Wei Li
  • Publication number: 20220173192
    Abstract: A display panel having a pixel region includes a base substrate, a plurality of pixel circuits located in the pixel region, and a plurality of light-emitting structures located in the pixel region. Each pixel circuit includes a storage capacitor and a plurality of transistors. The light-emitting structures are configured to emit light of at least three primary colors. Each light-emitting structure includes a light-emitting device. Each pixel circuit is coupled to the light-emitting device in a corresponding light-emitting structure, and a surface of the light-emitting device proximate to the base substrate is a light exit surface. Among the light-emitting structures, an orthogonal projection of an effective light-emitting region, on the base substrate, of the light-emitting device in a first light-emitting structure with a shortest light-emitting wavelength, is spaced apart from orthogonal projections of all storage capacitors of the plurality of pixel circuits on the base substrate.
    Type: Application
    Filed: November 20, 2020
    Publication date: June 2, 2022
    Inventors: Dongfang WANG, Qinghe WANG
  • Patent number: 11342431
    Abstract: A thin film transistor and a manufacturing method thereof, an array substrate and a display device are provided. The thin film transistor is formed on a substrate and includes: an active layer on the substrate, the active layer including a source region, a drain region, and a channel region between the source region and the drain region; a first gate electrode on a side of the active layer away from the substrate; and a second gate electrode on a side of the first gate electrode away from the substrate, wherein a thickness of the first gate electrode is smaller than a thickness of the second gate electrode.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: May 24, 2022
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tongshang Su, Dongfang Wang, Qinghe Wang, Ning Liu, Yongchao Huang, Yu Ji, Zheng Wang, Liangchen Yan
  • Patent number: 11342459
    Abstract: The disclosure relates to a thin film transistor structure, an array substrate, and a method for manufacturing a thin film transistor structure. The thin-film transistor structure includes a base substrate, a thin film transistor on the base substrate. Wherein the thin film transistor includes an active layer and a source/drain electrode on a side, facing towards the base substrate, of the active layer. Wherein the source/drain electrode has a protrusion protruding from an edge portion of the active layer in a direction parallel to a surface of the base substrate.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: May 24, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Luke Ding, Zhanfeng Cao, Jingang Fang, Liangchen Yan, Ce Zhao, Dongfang Wang
  • Publication number: 20220157212
    Abstract: The present disclosure provides a method for detecting a display substrate and a device for detecting a display substrate. The method includes: exciting a threshold voltage of a driving transistor in each pixel driving circuit in the display substrate, so that the threshold voltage of the driving transistor with a shifted threshold voltage is further shifted; inputting a detection signal to each pixel driving circuit in the display substrate, where the detection signal is a signal enabling the pixel driving circuit to operate normally; and judging whether the display substrate is normal or not according to the voltage output by each pixel driving circuit.
    Type: Application
    Filed: January 6, 2021
    Publication date: May 19, 2022
    Inventors: Guangyao LI, Yuankui DING, Liusong NI, Jun WANG, Haitao WANG, Dongfang WANG
  • Patent number: 11333856
    Abstract: An optical lens assembly and an imaging device. The optical lens assembly includes, in order from an object side to an image side: a first lens (L1) being a meniscus lens having a negative focal power, the first lens having an object side surface (S1) being a convex surface, and an image side surface (S2) being a concave surface; a second lens (L2) having a negative focal power, an image side surface (S4) of the second lens being a concave surface; a third lens (L3) being a meniscus lens having a positive focal power, the third lens having an object side surface (S5) being a concave surface, and an image side surface (S6) being a convex surface; a fourth lens (L4); a fifth lens (L5) cemented to the fourth lens; and a sixth lens (L6) having a positive focal power.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: May 17, 2022
    Assignee: NINGBO SUNNY AUTOMOTIVE OPTECH CO., LTD.
    Inventors: Qiansen Xie, Dongfang Wang, Bo Yao
  • Publication number: 20220137376
    Abstract: An optical lens comprises: a first lens (L1) having a negative focal power; a second lens (L2); a third lens (L3); a fourth lens (L4); a fifth lens (L5), wherein the fourth lens (L4) and the fifth lens (L5) forms an achromatic lens group; and a sixth lens (L6), wherein the first lens (L1), the second lens (L2), the third lens (L3), the fourth lens (L4), the fifth lens (L5), and the sixth lens (L6) are sequentially disposed along a direction from an object side to an image side, wherein the first lens (L1) has at least one object surface (S1) facing the object side, and the object surface (S1) of the first lens (L1) is convex, and wherein the second lens (L2) has at least one image surface (S4) facing the image side, and the image surface (S4) of the second lens (L2) is convex so as to facilitate forming a concentric circle structure.
    Type: Application
    Filed: January 20, 2022
    Publication date: May 5, 2022
    Inventors: Bo Yao, Qiansen Xie, Dongfang Wang
  • Patent number: 11315783
    Abstract: A method of fabricating a display substrate is provided. The method includes forming a conductive layer on a base substrate; and performing a chemical vapor deposition process to form an oxide layer on a side of an exposed surface of the conductive layer away from the base substrate, the exposed surface of the conductive layer including copper, the oxide layer formed to include an oxide of a target element M. The chemical vapor deposition process is performed using a mixture of a first reaction gas including oxygen and a second reaction gas including the target element M, at a reaction temperature in a range of 200 Celsius degrees to 280 Celsius degrees. A mole ratio of oxygen element to the target element M in the mixture of the first reaction gas and the second reaction gas is in a range of 40:1 to 60:1.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: April 26, 2022
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yuankui Ding, Heekyu Kim, Liangchen Yan, Ce Zhao, Bin Zhou, Yingbin Hu, Wei Song, Dongfang Wang
  • Patent number: 11307498
    Abstract: A film patterning method, an array substrate, and a manufacturing method of an array substrate are disclosed. The film patterning method includes: applying photoresist on a film to be patterned; performing exposure and development on the photoresist, a region corresponding to a completely removed portion of the photoresist after the exposure and the development being a first region; post-baking the photoresist, so that the photoresist is melted and collapsed to change the region corresponding to the completely removed portion into a second region, the photoresist after post-baking forms into a mask pattern; and patterning the film by using the mask pattern as a mask.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: April 19, 2022
    Assignees: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Jun Wang, Guangcai Yuan, Dongfang Wang, Chong Fang, Guangyao Li
  • Publication number: 20220108641
    Abstract: The present invention relates to the technical field of display and provides a test circuit, an array substrate, and a display panel. The array substrate comprises a plurality of signal lines. The test circuit comprises: a plurality of first switch units having one-to-one correspondence with the signal lines, the first switch units having first ends connected to first ends of the signal lines, second ends mutually short-circuited, and control ends connected to first control signal ends; and a plurality of second switch units having one-to-one correspondence with the signal lines, the second switch units having first ends connected to second ends of the signal lines, second ends mutually short-circuited, and control ends connected to second control signal ends, wherein the plurality of first switch units and the plurality of second switch units have one-to-one correspondence with the signal lines.
    Type: Application
    Filed: January 5, 2021
    Publication date: April 7, 2022
    Inventors: Guangyao LI, Dongfang WANG
  • Patent number: 11295643
    Abstract: Provided are a detection method and a detection device, the detection method includes: in a first writing stage, providing an active voltage to each data line, each power supply terminal, both ends of a first gate line to-be-detected, an absolute value of the active voltage of each data line is smaller than that of the active voltage of the power supply terminal, an absolute value of the active voltage of the first gate line to-be-detected is smaller than that of the active voltage of each data line; in a first detection stage, maintaining the active voltage of the power supply terminal, providing an inactive voltage to the first gate line to-be-detected and providing an active voltage to the data line, detecting voltages at second electrodes of storage capacitors corresponding to the first gate line to-be-detected, determining whether the first gate line to-be-detected has breakpoint according to the detected voltages.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: April 5, 2022
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jun Wang, Dongfang Wang, Guangyao Li, Haitao Wang, Qinghe Wang, Tongshang Su, Chen Shen, Xiaoning Zhang, Youpeng Gan
  • Publication number: 20220099927
    Abstract: An optical lens assembly is provided. The optical lens assembly includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, which are arranged sequentially from an object side to an image side along an optical axis. The first lens has a negative refractive power, and an object-side surface of the first lens is a convex surface, and an image-side surface of the first lens is a concave surface. The second lens has a positive refractive power, an object-side surface of the second lens is a concave surface, and an image-side surface of the second lens is a convex surface. The third lens has a refractive power. The fourth lens has a refractive power. The fifth lens has a refractive power, the sixth lens has a refractive power, and the seventh lens has a positive refractive power.
    Type: Application
    Filed: December 10, 2021
    Publication date: March 31, 2022
    Inventors: Bo YAO, Dongfang WANG
  • Patent number: 11287333
    Abstract: A pressure sensing unit includes: a first substrate and a second substrate opposite to each other; and at least one vertical thin film transistor disposed between the first substrate and the second substrate. Each vertical thin film transistor includes a first electrode, a semiconductor active layer, a second electrode, at least one insulating support, and a gate electrode sequentially disposed in a direction extending from the first substrate to the second substrate. A first air gap is formed by the presence of the at least one insulating support between the gate electrode and the second electrode of each vertical thin film transistor.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: March 29, 2022
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Qinghe Wang, Dongfang Wang, Bin Zhou, Ce Zhao, Tongshang Su, Leilei Cheng, Yang Zhang, Guangyao Li
  • Publication number: 20220082793
    Abstract: Disclosed are an optical lens, and an imaging device comprising the optical lens.
    Type: Application
    Filed: November 22, 2021
    Publication date: March 17, 2022
    Inventors: Xiaoyu Luan, Bo Yao, Dongfang Wang, Qiansen Xie
  • Patent number: 11275233
    Abstract: An optical lens comprises: a first lens having a negative focal power; a second lens; a third lens; a fourth lens; a fifth lens, wherein the fourth lens and the fifth lens forms an achromatic lens group; and a sixth lens, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are sequentially disposed along a direction from an object side to an image side, wherein the first lens has at least one object surface facing the object side, and the object surface of the first lens is convex, and wherein the second lens has at least one image surface facing the image side, and the image surface of the second lens is convex so as to facilitate forming a concentric circle structure.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: March 15, 2022
    Assignee: NINGBO SUNNY AUTOMOTIVE OPTECH CO., LTD.
    Inventors: Bo Yao, Qiansen Xie, Dongfang Wang
  • Publication number: 20220064783
    Abstract: A sputtering system and a deposition method are provided. The sputtering system includes at least two sputtering chambers. Each of the at least two sputtering chambers includes a plurality of targets separated from each other and a plurality of target pedestals. Each of the plurality of targets is mounted on a corresponding target pedestal of the plurality of target pedestals, and a gap between two adjacent targets of the plurality of targets has a width sufficient to accommodate at least one of the plurality of targets.
    Type: Application
    Filed: October 14, 2021
    Publication date: March 3, 2022
    Applicants: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tongshang SU, Dongfang WANG, Leilei CHENG, Jun LIU, Ning LIU, Qinghe WANG, Liangchen YAN
  • Patent number: 11264411
    Abstract: An array substrate and a display device are provided in embodiments of the present disclosure. The array substrate includes a base substrate, a buffer layer, an active layer, a gate insulating layer, a gate electrode, an interlayer insulating layer, a source-drain electrode electrically conductive layer, a passivation layer, and a first light shielding layer. The first light shielding layer is disposed on a side of the passivation layer facing away from the interlayer insulating layer. An orthographic projection of the first light shielding layer on the base substrate at least partially overlaps with an orthographic projection of the active layer on the base substrate, and the first light shielding layer is formed by a photoresist material.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: March 1, 2022
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tongshang Su, Dongfang Wang, Jun Liu, Qinghe Wang, Jun Wang, Ning Liu, Guangyao Li
  • Patent number: 11257955
    Abstract: The disclosure provides a thin film transistor, an array substrate, and a method for fabricating the same. An embodiment of the disclosure provides a method for fabricating a thin film transistor, the method including: forming a gate, a gate insulation layer, and an active layer above an underlying substrate successively; forming a patterned hydrophobic layer above the active layer, wherein the hydrophobic layer includes first pattern components, and orthographic projections of the first pattern components onto the underlying substrate overlap with a orthographic projection of a channel area at the active layer onto the underlying substrate; and forming a source and a drain above the hydrophobic layer, wherein the source and the drain are located respectively on two sides of a channel area, and in contact with the active layer.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: February 22, 2022
    Assignees: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Qinghe Wang, Luke Ding, Leilei Cheng, Jun Bao, Tongshang Su, Dongfang Wang, Guangcai Yuan