Patents by Inventor Zhenhua Yuan
Zhenhua Yuan 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).
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Publication number: 20240135875Abstract: A pixel circuit and a driving method therefor, and a display panel. The pixel circuit includes a driving circuit, a data writing circuit, a compensation storage circuit, a first light-emitting control circuit and a second light-emitting control circuit. The driving circuit includes a control end, a first end, and a second end, and is configured to control a driving current which flows through the first end and the second end and which is used for driving a light-emitting element to emit light; the data writing circuit is connected to a first scanning signal line and is configured to, in response to a first scanning signal provided by the first scanning signal line, write a data signal into the first end of the driving circuit; the data writing circuit and the first light-emitting control circuit repel one another in a connected state under the control of the first scanning signal.Type: ApplicationFiled: July 14, 2022Publication date: April 25, 2024Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Changlong Yuan, Xilei Cao, Li Zhu, Benlian Wang, Zhenhua Zhang
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Publication number: 20240119897Abstract: A pixel circuit and a driving method therefor and a display panel are provided. The pixel circuit includes a driving circuit, a data writing circuit, a storage circuit, and a first reset circuit; the driving circuit includes a control terminal, a first terminal, and a second terminal, and is configured to control a driving current flowing through the first terminal and the second terminal for driving a light-emitting element to emit light; the data write circuit is configured to write a data signal into the control terminal of the driving circuit; the storage circuit is configured to store the data signal; the first reset circuit is configured to apply a first initialization voltage to the control terminal of the driving circuit; the driving circuit and the data write circuit each include an N-type thin film transistor; and the first reset circuit includes an N-type oxide thin film transistor.Type: ApplicationFiled: July 5, 2022Publication date: April 11, 2024Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Zhenhua Zhang, Dongfang Yang, Xilei Cao, Xueguang Hao, Lang Liu, Jingyi Feng, Changlong Yuan, Xiaoxin Li, Li Zhu
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Patent number: 11922845Abstract: The present disclosure provides a shift register unit, a driving method, a driving circuit and a display device. The shift register unit includes a first node potential adjustment circuit, a first tank circuit, a second node control circuit, a second tank circuit, a third node control circuit, a first node control circuit, and an output circuit; the first node potential adjustment circuit changes the potential of the first node according to the adjustment clock signal under the control of the potential of the first node; the first tank circuit is used to maintain the potential of the first node; the third node control circuit controls the potential of the third isolation node and the potential of the fourth node; the second node control circuit controls the potential of the second isolation node.Type: GrantFiled: October 23, 2020Date of Patent: March 5, 2024Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Yingsong Xu, Zhenhua Zhang, Qian Ma, Xilei Cao, Changlong Yuan, Jingyi Feng, Weiyun Huang, Benlian Wang
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Publication number: 20240014122Abstract: A package substrate includes a substrate body and a plurality of unit regions disposed on the substrate body. The unit region includes two first solder ball structures. The first solder ball structure includes six first solder balls. The six first solder balls are arranged, with two of them in a row, to form three parallel rows of two solder balls: a first row of solder balls, a second row of solder balls, and a third row of solder balls. Four first solder balls in the first row of solder balls and the second row of solder balls are respectively located at four vertices of one parallelogram, and four first solder balls in the second row of solder balls and the third row of solder balls are respectively located at four vertices of the other parallelogram, and the two parallelograms are arranged axisymmetric about the second row of solder balls.Type: ApplicationFiled: September 26, 2023Publication date: January 11, 2024Inventors: Xiping Peng, Zhenhua Yuan
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Patent number: 11484335Abstract: A skin surface indwelling device for guiding punctures includes: an indwelling tube (13) having an inside tunnel (P) substantially extending along the longitudinal direction of the indwelling tube (13), the tunnel (P) is used for guiding needle (N), the indwelling tube (13) has a proximal end positioned above the skin surface (S) and a distal end positioned under the skin surface (S) in indwelling state; a support (11) having a bottom surface on its bottom that directly or indirectly contacts with the skin surface (S), the support (11) supports and fixates the indwelling tube (13); and a sealing elements (141,142) configured to seal the tunnel (P). The skin surface indwelling device for guiding punctures can shorten the time of establishing a puncture tunnel in the buttonhole puncture method, and help to build the puncture tunnel. In addition, the skin surface indwelling device can also guide the puncture needle (N) when puncturing, and protect the immature puncture tunnel.Type: GrantFiled: March 29, 2017Date of Patent: November 1, 2022Assignee: MEDTRONIC, INC.Inventors: Yong Feng, Yueqiang Xue, Jian Song, Kai Huang, Chengrui Pan, Xin Tang, Jianming Zhou, Zhenhua Yuan, Jing Zhang, Wei Hu
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Publication number: 20210246467Abstract: The invention relates to synthetic adeno-associated virus capsids targeted to the liver and vims vectors comprising the same. The invention further relates to methods of using the vectors to target the liver and provide liver-specific expression, as well as transduce human primary hepatocytes and cell lines.Type: ApplicationFiled: June 12, 2019Publication date: August 12, 2021Inventors: Xiao Xiao, Juan Li, Bin Xiao, Zhenhua Yuan
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Publication number: 20190309048Abstract: The invention relates to synthetic liver-specific promoters and expression constructs for producing polypeptides and functional nucleic acids in the liver of a subject. The invention further relates to Factor VIII proteins containing modifications in the amino acid sequence of the Factor VIII protein, as well as nucleic acid constructs encoding the Factor VIII proteins and methods of using these compositions to treat a bleeding disorder.Type: ApplicationFiled: May 20, 2019Publication date: October 10, 2019Inventors: Xiao Xiao, Juan Li, Zhenhua Yuan
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Patent number: 10308705Abstract: The invention relates to synthetic liver-specific promoters and expression constructs for producing polypeptides and functional nucleic acids in the liver of a subject. The invention further relates to Factor VIII proteins containing modifications in the amino acid sequence of the Factor VIII protein, as well as nucleic acid constructs encoding the Factor VIII proteins and methods of using these compositions to treat a bleeding disorder.Type: GrantFiled: February 5, 2016Date of Patent: June 4, 2019Assignee: The University of North Carolina at Chapel HillInventors: Xiao Xiao, Juan Li, Zhenhua Yuan
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Publication number: 20190046233Abstract: A skin surface indwelling device for guiding punctures includes: an indwelling tube (13) having an inside tunnel (P) substantially extending along the longitudinal direction of the indwelling tube (13), the tunnel (P) is used for guiding needle (N), the indwelling tube (13) has a proximal end positioned above the skin surface (S) and a distal end positioned under the skin surface (S) in indwelling state; a support (11) having a bottom surface on its bottom that directly or indirectly contacts with the skin surface (S), the support (11) supports and fixates the indwelling tube (13); and a sealing elements (141,142) configured to seal the tunnel (P). The skin surface indwelling device for guiding punctures can shorten the time of establishing a puncture tunnel in the buttonhole puncture method, and help to build the puncture tunnel. In addition, the skin surface indwelling device can also guide the puncture needle (N) when puncturing, and protect the immature puncture tunnel.Type: ApplicationFiled: March 29, 2017Publication date: February 14, 2019Inventors: Yong FENG, Yueqiang XUE, Jian SONG, Kai HUANG, Chengrui PAN, Xin TANG, Jianming ZHOU, Zhenhua YUAN, Jing ZHANG, Wei HU
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Publication number: 20160229904Abstract: The invention relates to synthetic liver-specific promoters and expression constructs for producing polypeptides and functional nucleic acids in the liver of a subject. The invention further relates to Factor VIII proteins containing modifications in the amino acid sequence of the Factor VIII protein, as well as nucleic acid constructs encoding the Factor VIII proteins and methods of using these compositions to treat a bleeding disorder.Type: ApplicationFiled: February 5, 2016Publication date: August 11, 2016Inventors: Xiao Xiao, Juan Li, Zhenhua Yuan
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Patent number: 8841362Abstract: Disclosed herein is a composition of matter comprising a blend of discontinuous thermoplastic starch domains in a synthetic polymer, said composition of matter being characterized by an average diameter of thermoplastic starch domains of about 0.2 to about 1.5 microns. Also disclosed are compositions of matter comprising a blend of discontinuous thermoplastic starch domains in a synthetic polymer and being characterized by finished articles having key mechanical properties which are essentially maintained or in some cases improved over pure synthetic polymers. In yet another aspect, the present invention provides a method for making the material of the present invention. In a related aspect, the present invention provides the novel materials issued from the method of making the material. In other aspects, the present invention provides novel finished article compositions in the form of films or molded articles.Type: GrantFiled: April 28, 2006Date of Patent: September 23, 2014Assignee: Polyvalor, Limited PartnershipInventors: Basil D. Favis, Zhenhua Yuan, Danut Riscanu
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Patent number: 8007823Abstract: The present invention relates to a highly controlled method of preparation of a microporous biodegradable polymeric article. Firstly, at least one biodegradable polymer A, one polymer B, biodegradable or not, partially or totally immiscible with A, and a compatibilizer C for A and B are selected. Secondly, the selected polymers are melt-blended, thereby preparing a polymer blend, wherein said polymers A and B have an essentially continuous morphology. Thirdly, after cooling, polymer B and compatibilizer C are selectively extracted from the polymer blend by dissolution in a solvent that is a non-solvent of polymer A. The resulting polymeric article has an essentially continuous porosity with a void volume between 10 and 90% and a unimodal diameter distribution set to a predefined unimodal peak location. It can be used in tissue engineering, for controlled release applications or as an implantable medical device.Type: GrantFiled: April 2, 2004Date of Patent: August 30, 2011Assignee: Corporation de l'Ecole Polytechnique de MontrealInventors: Basil D. Favis, Pierre Sarazin, Jianming Li, Zhenhua Yuan
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Publication number: 20080287592Abstract: Disclosed herein is a composition of matter comprising a blend of discontinuous thermoplastic starch domains in a synthetic polymer, said composition of matter being characterized by an average diameter of thermoplastic starch domains of about 0.2 to about 1.5 microns. Also disclosed are compositions of matter comprising a blend of discontinuous thermoplastic starch domains in a synthetic polymer and being characterized by finished articles having key mechanical properties which are essentially maintained or in some cases improved over pure synthetic polymers. In yet another aspect, the present invention provides a method for making the material of the present invention. In a related aspect, the present invention provides the novel materials issued from the method of making the material. In other aspects, the present invention provides novel finished article compositions in the form of films or molded articles.Type: ApplicationFiled: April 28, 2006Publication date: November 20, 2008Inventors: Basil D. Favis, Zhenhua Yuan
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Publication number: 20070116737Abstract: The present invention relates to a highly controlled method of preparation of a microporous biodegradable polymeric article. Firstly, at least one biodegradable polymer A, one polymer B, biodegradable or not, partially or totally immiscible with A, and a compatibilizer C for A and B are selected. Secondly, the selected polymers are melt-blended, thereby preparing a polymer blend; wherein said polymers A and B have an essentially continuous morphology. Thirdly, after cooling, polymer B and compatibilizer C are selectively extracted from the polymer blend by dissolution in a solvent that is a non-solvent of polymer A. The resulting polymeric article has an essentially continuous porosity with a void volume between 10 and 90% and a unimodal diameter distribution set to a predefined unimodal peak location. It can be used in tissue engineering, for controlled release applications or as an implantable medical device.Type: ApplicationFiled: April 2, 2004Publication date: May 24, 2007Inventors: Basil Favis, Pierre Sarazin, Jiangming Li, Zhenhua Yuan