Patents by Inventor Zhenqiang Ma

Zhenqiang Ma 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: 20240132823
    Abstract: Photoreceptor scaffolds that can be used for transplantation of organized photoreceptor tissue, with or without retinal pigment epithelial cells, which may improve grafted cell survival, integration, and functional visual rescue are disclosed herein. The scaffolds include a cell support layer having at least one honeycomb-shaped reservoir fluidly connected to a plurality of through-holes and at least one cell in the at least one honeycomb-shaped reservoir.
    Type: Application
    Filed: October 11, 2020
    Publication date: April 25, 2024
    Inventors: Zhenqiang Ma, Inkyu Lee, Juhwan Lee, Michael Phillips, David Gamm, Shaoqin Gong
  • Patent number: 11894399
    Abstract: Hyperspectral resonant cavity imaging spectrometers and imaging systems incorporating the resonant cavity spectrometers are provided. The spectrometers include an array of photodetectors based on photosensitive semiconductor nanomembranes disposed between two dielectric spacers, each of the dielectric spacers having a thickness gradient along a lateral direction, such that the resonant cavity height differs for different photodetectors in the array.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: February 6, 2024
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Zhenqiang Ma, Zhenyang Xia, Ming Zhou, Qiaoqiang Gan, Zongfu Yu
  • Publication number: 20230170273
    Abstract: Flexible transistors and electronic circuits incorporating the transistors are provided. The flexible transistors promote heat dissipation from the active regions of the transistors while preserving their mechanical flexibility and high-frequency performance. The transistor designs utilize thru-substrate vias (TSVs) beneath the active regions of thin-film type transistors on thin flexible substrates. To promote rapid heat dissipation, the TSVs are coated with a material having a high thermal conductivity that transfers heat from the active region of the transistor to a large-area ground.
    Type: Application
    Filed: October 6, 2022
    Publication date: June 1, 2023
    Inventors: Zhenqiang Ma, Huilong Zhang, Shaoqin Gong
  • Patent number: 11616129
    Abstract: Patterning methods for forming patterned device substrates are provided. Also provided are devices made using the methods. The methods utilize photoresist features have re-entrant profiles to form a secondary metal hard mask that can be used to pattern an underlying device substrate.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: March 28, 2023
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Zhenqiang Ma, Yei Hwan Jung
  • Publication number: 20230036175
    Abstract: Methods of spatially directing the orientation and placement of multiple block copolymer (BCP) domains on isolated regions of a substrate are described. The methods involve epitaxially directing the assembly of BCP domains using spatial boundaries between regions with different surface composition, formed at the edges of isolated chemical regions on a background chemistry. Multiple vertical domains of BCP order on the isolated region, self-aligned in a direction parallel to edges of the isolated region. In some embodiments, vertical domains order on multiple isolated regions of a first chemistry of a chemical contrast pattern with horizontal domains on the regions of a second (background) chemistry of the chemical contrast pattern. Also provided herein are compositions resulting from the methods.
    Type: Application
    Filed: December 22, 2020
    Publication date: February 2, 2023
    Inventors: Michael Arnold, Robert Jacobberger, Paul F. Nealey, Shisheng Xiong, Tzu-Hsuan Chang, Zhenqiang Ma
  • Patent number: 11495512
    Abstract: Flexible transistors and electronic circuits incorporating the transistors are provided. The flexible transistors promote heat dissipation from the active regions of the transistors while preserving their mechanical flexibility and high-frequency performance. The transistor designs utilize thru-substrate vias (TSVs) beneath the active regions of thin-film type transistors on thin flexible substrates. To promote rapid heat dissipation, the TSVs are coated with a material having a high thermal conductivity that transfers heat from the active region of the transistor to a large-area ground.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: November 8, 2022
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Zhenqiang Ma, Huilong Zhang, Shaoqin Gong
  • Publication number: 20220285411
    Abstract: Hyperspectral resonant cavity imaging spectrometers and imaging systems incorporating the resonant cavity spectrometers are provided. The spectrometers include an array of photodetectors based on photosensitive semiconductor nanomembranes disposed between two dielectric spacers, each of the dielectric spacers having a thickness gradient along a lateral direction, such that the resonant cavity height differs for different photodetectors in the array.
    Type: Application
    Filed: March 2, 2021
    Publication date: September 8, 2022
    Inventors: Zhenqiang Ma, Zhenyang Xia, Ming Zhou, Qiaoqiang Gan, Zongfu Yu
  • Patent number: 11407698
    Abstract: The present invention relates to a synthesis method and synthesis reactor of high-selectivity 2-methylallyl chloride by taking isobutylene and chlorine gas as raw materials and performing a gas-phase chlorination reaction in a microchannel reactor with a cooling surface. The isobutylene and the chlorine gas are reacted in a T-shaped microchannel reactor, and the mixing speed is extremely fast. Meanwhile, the huge heat exchange area per unit volume can ensure that the reaction proceeds stably at a substantially constant temperature and has good controllability. Therefore, side reactions caused by excessive local temperature can be effectively suppressed, the reaction selectivity is high, and no coking phenomenon occurs.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: August 9, 2022
    Assignees: ZHEJIANG UNIVERSITY, ZHEJIANG HUANGMA TECHNOLOGY CO., LTD.
    Inventors: Hong Yin, Zhirong Chen, Xinrong Wang, Weisong Wang, Yuanrong Yu, Shengli Wang, Yuefen Wang, Zhenqiang Ma, Xingjun Zhao, Jianfang Qian
  • Patent number: 11371003
    Abstract: Photoreceptor scaffolds and scaffold systems including the photoreceptor scaffolds are described herein. The scaffolds and scaffold systems can be used for transplantation of organized photoreceptor tissue, with or without RPE, which may improve grafted cell survival, integration, and functional visual rescue. Particularly, the photoreceptor scaffold is structured from a biocompatible film, patterned with an array of unique through-holes having a curvilinear cell receiver and at least one cell guide channel.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: June 28, 2022
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Zhenqiang Ma, Yei Hwan Jung, Michael Phillips, David Gamm, Shaoqin Gong
  • Publication number: 20210389183
    Abstract: In one aspect, the invention provides a nanobolometer cell including a base layer, a dielectric spacer layer above and adjacent to the base layer, an ultrathin silicon film above and adjacent to the spacer layer, and at least one plasmonic optical antenna resonator above and adjacent to the silicon film.
    Type: Application
    Filed: November 8, 2019
    Publication date: December 16, 2021
    Applicants: Yale University, Wisconsin Alumni Research Foundation
    Inventors: Qiushi Guo, Cheng Li, Fengnian Xia, Zhenqiang Ma, Dong Liu, Zhenyang Xia
  • Publication number: 20210343618
    Abstract: Flexible transistors and electronic circuits incorporating the transistors are provided. The flexible transistors promote heat dissipation from the active regions of the transistors while preserving their mechanical flexibility and high-frequency performance. The transistor designs utilize thru-substrate vias (TSVs) beneath the active regions of thin-film type transistors on thin flexible substrates. To promote rapid heat dissipation, the TSVs are coated with a material having a high thermal conductivity that transfers heat from the active region of the transistor to a large-area ground.
    Type: Application
    Filed: April 30, 2020
    Publication date: November 4, 2021
    Inventors: Zhenqiang Ma, Huilong Zhang, Shaoqin Gong
  • Patent number: 11158287
    Abstract: Embodiments of the present disclosure provide a system for display. The system includes a display having a plurality of pixels, a processor, and a control logic. The processor includes a graphics pipeline configured to generate a plurality of pieces of pixel data for the plurality of pixels and a pre-processing module configured to generate a plurality of pieces of compensation data for the pixel data and compress the compensation data. The compensation data is compressed by determining a plurality of pieces of quantified down-sampled compensation data based on the compensation data, converting the quantified down-sampled compensation data into M units of index data, and converting the M units of index data into M code streams. The control logic is operatively coupled to the display and the processor and includes a post-processing module configured to decompress the compressed compensation data based on the M code streams to provide control signals.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: October 26, 2021
    Assignee: SHENZHEN YUNYINGGU TECHNOLOGY CO., LTD.
    Inventors: Yongwen Jiang, Haining Xu, Jingfeng Wang, Mengya Shen, Yajun Cao, Haopeng Lian, Zhenqiang Ma
  • Publication number: 20210287624
    Abstract: Embodiments of the present disclosure provide a system for display. The system includes a display having a plurality of pixels, a processor, and a control logic. The processor includes a graphics pipeline configured to generate a plurality of pieces of pixel data for the plurality of pixels and a pre-processing module configured to generate a plurality of pieces of compensation data for the pixel data and compress the compensation data. The compensation data is compressed by determining a plurality of pieces of quantified down-sampled compensation data based on the compensation data, converting the quantified down-sampled compensation data into M units of index data, and converting the M units of index data into M code streams. The control logic is operatively coupled to the display and the processor and includes a post-processing module configured to decompress the compressed compensation data based on the M code streams to provide control signals.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 16, 2021
    Applicant: Shenzhen Yunyinggu Technology Co., Ltd.
    Inventors: Yongwen Jiang, Haining Xu, Jingfeng Wang, Mengya Shen, Yajun Cao, Haopeng Lian, Zhenqiang Ma
  • Patent number: 11109486
    Abstract: The present invention provides flexible devices, such as integrated circuits, having a multilevel electronic device structure including two or more electronic components. The electronic components within the structure are electrically connected by an interconnect structure having multiple interconnect levels. In addition to the multilevel electronic device structure, the flexible devices include an elastomeric material disposed around the interconnect levels, including within the spaces between the interconnect levels.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: August 31, 2021
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Zhenqiang Ma, Guoxuan Qin, Namki Cho
  • Publication number: 20210179520
    Abstract: The present invention relates to a synthesis method and synthesis reactor of high-selectivity 2-methylallyl chloride by taking isobutylene and chlorine gas as raw materials and performing a gas-phase chlorination reaction in a microchannel reactor with a cooling surface. The isobutylene and the chlorine gas are reacted in a T-shaped microchannel reactor, and the mixing speed is extremely fast. Meanwhile, the huge heat exchange area per unit volume can ensure that the reaction proceeds stably at a substantially constant temperature and has good controllability. Therefore, side reactions caused by excessive local temperature can be effectively suppressed, the reaction selectivity is high, and no coking phenomenon occurs.
    Type: Application
    Filed: October 10, 2018
    Publication date: June 17, 2021
    Applicants: ZHEJIANG UNIVERSITY, ZHEJIANG HUANGMA TECHNOLOGY CO., LTD.
    Inventors: Hong YIN, Zhirong CHEN, Xinrong WANG, Weisong WANG, Yuanrong YU, Shengli WANG, Yuefen WANG, Zhenqiang MA, Xingjun ZHAO, Jianfang QIAN
  • Publication number: 20210143262
    Abstract: Patterning methods for forming patterned device substrates are provided. Also provided are devices made using the methods. The methods utilize photoresist features have re-entrant profiles to form a secondary metal hard mask that can be used to pattern an underlying device substrate.
    Type: Application
    Filed: December 16, 2020
    Publication date: May 13, 2021
    Inventors: Zhenqiang Ma, Yei Hwan Jung
  • Patent number: 10950190
    Abstract: The present disclosure provides a method for determining an overdrive mapping correlation in a display panel. The method includes the following steps. First, a repeating subpixel arrangement is determined. The subpixel arrangement includes at least three sets of subpixels in the display panel. An ideal luminance value of a pattern of the subpixel arrangement is then determined. The pattern includes at least a first set of subpixels displaying a zero pixel value, a second set of subpixels displaying a first nonzero pixel value, and a third set of subpixels displaying a second nonzero pixel value, the first, second and third sets of subpixels respectively arranged one after another. The first nonzero pixel value may be different from the second nonzero gray scale value. An actual luminance value of the pattern of the subpixel arrangement is then determined. An overdrive pixel value is further determined.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: March 16, 2021
    Assignee: SHENZHEN YUNYINGGU TECHNOLOGY CO., LTD.
    Inventors: Yaoming Lin, Guoqiang Mei, Yongwen Jiang, Wenguang Yang, Yan Lin, Zhenqiang Ma, Yuan Zi
  • Publication number: 20210055434
    Abstract: Micrometer-scale x-ray photodetectors that utilize a flexible array of photodiodes wrapped around the circumference of a scintillator core are provided. The photodetectors use dense and flexible pixelated arrays of photodiodes disposed around the circumference of a crystalline scintillator to provide highly compact photodetectors with high spatial, temporal, and energy resolution.
    Type: Application
    Filed: August 26, 2020
    Publication date: February 25, 2021
    Inventors: Zhenqiang Ma, Zhenyang Xia
  • Patent number: 10903329
    Abstract: Patterning methods for forming patterned device substrates are provided. Also provided are devices made using the methods. The methods utilize photoresist features have re-entrant profiles to form a secondary metal hard mask that can be used to pattern an underlying device substrate.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: January 26, 2021
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Zhenqiang Ma, Yei Hwan Jung
  • Patent number: 10891897
    Abstract: The present disclosure provides methods and systems for estimating and compensating the aging of light emitting elements in a display panel. In one example, a method for compensating aging of light emitting elements in a display panel is disclosed. A luminance target is determined based on historical luminance losses of a plurality of light emitting elements in the display panel. An adjusted luminance loss of one of the plurality of light emitting elements is determined based on a current and a luminance loss of the light emitting element. A compensation factor of the light emitting element is determined based on the adjusted luminance loss of the light emitting element and the luminance target. A compensated current is provided to the light emitting element based on the current and the compensation factor of the light emitting element.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: January 12, 2021
    Assignee: SHENZHEN YUNYINGGU TECHNOLOGY CO., LTD.
    Inventors: Haining Xu, Yaoming Lin, Shike Wu, Yajun Cao, Yan Lin, Zhenqiang Ma