Patents Assigned to Peking University
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Patent number: 9490315Abstract: The invention provides a power semiconductor device and a method of fabricating the same and a cutoff ring. A cutoff ring located at a periphery of an active area of the power semiconductor device is etched forming at least one trench below which an implant area is formed by implanting ions into the trench, and a silicon dioxide dielectric layer covering the trench and a surface of the active area, are formed. Since the ions are implanted into the trench formed by etching the cutoff ring to thereby increase a depth of the implanted ions and a density of the cutoff ring, a width of the cutoff ring can be shortened to thereby address the technical problem of a considerable area of a chip occupied by the cutoff ring and improve a utilization ratio of the area of the chip so as to lower a cost of fabricating the chip.Type: GrantFiled: January 12, 2015Date of Patent: November 8, 2016Assignees: Peking University Founder Group Co., Ltd., Founder Microelectronics International Co., Ltd.Inventors: Li Li, Wanli Ma, Shengzhe Zhao
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Patent number: 9487820Abstract: The invention discloses a method of extracting nucleic acid analyte solution from biological sample, comprising: placing the biological sample into a heating container; optionally, adding solvent medium into the biological sample; heating the biological sample under high pressure; optionally, centrifuging the biological sample; and obtaining the solution including the nucleic acid analyte. The invention also discloses a method of detecting the nucleic acid analyte obtained by said extraction method.Type: GrantFiled: April 27, 2011Date of Patent: November 8, 2016Assignee: Peking UniversityInventor: Haohao Zhong
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Patent number: 9490363Abstract: The present invention discloses a tunneling field effect transistor having a three-side source and a fabrication method thereof, referring to field effect transistor logic devices and circuits in CMOS ultra large scale integrated circuits (ULSI). By means of the strong depletion effect of the three-side source, the transistor can equivalently achieve a steep doping concentration gradient for the source junction, significantly optimizing the sub-threshold slope of the TFET. Meanwhile, the turn-on current of the transistor is boosted. Furthermore, due to a region uncovered by the gate between the gate and the drain, the bipolar conduction effect of the transistor is effectively inhibited, and on the other hand, in the small-size transistor a parasitic tunneling current at the corner of the source junction is inhibited. The fabrication method is simple and can be accurately controlled.Type: GrantFiled: March 31, 2014Date of Patent: November 8, 2016Assignee: Peking UniversityInventors: Ru Huang, Qianqian Huang, Chunlei Wu, Jiaxin Wang, Yangyuan Wang
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Patent number: 9484208Abstract: The present invention discloses a preparation method of a germanium-based Schottky junction, comprising, cleaning a surface of N-type germanium-based substrate, then depositing a layer of CeO2 on the surface, and further depositing a layer of metal. The stability Ce—O—Ge bonds can be formed at the interface after rare earth oxides CeO2 are in contact with the germanium substrate, and this is beneficial to reduce the interface state density, improve the quality of the interface, and reduce the MIGS and suppress Fermi-level pinning. Meanwhile, the tunneling resistance introduced by CeO2 between the metal and the germanium substrate is smaller relative to the case of Si3N4, Al2O3, Ge3N4 or the like. In view of the excellent surface characteristics and small conduction band offset relative to the germanium substrate, interposing of the CeO2 dielectric layer is applicable to the preparation the germanium-based Schottky junction having a low resistivity.Type: GrantFiled: September 30, 2013Date of Patent: November 1, 2016Assignee: Peking UniversityInventors: Ru Huang, Meng Lin, Zhiqiang Li, Xia An, Ming Li, Quanxin Yun, Min Li, Pengqiang Liu, Xing Zhang
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Publication number: 20160306805Abstract: Techniques are generally described related to tag refinement strategy. One example method for refining homonyms and synonyms in a plurality of tags may include receiving, by a tag refinement system, a plurality of tagging actions each of which associates one or more of the plurality of tags with a digital object. The method may further include extracting, by the tag refinement system, a first subset of tags from the plurality of tags, wherein the first subset of tags have a higher collective relativity-similarity score comparing to a second subset of tags selected from the plurality of tags, and the first subset of tags, different from the second subset of tags, have a same predetermined tag count as the second subset of tags.Type: ApplicationFiled: June 29, 2016Publication date: October 20, 2016Applicant: Peking UniversityInventors: Bin CUI, Junjie YAO
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Patent number: 9470690Abstract: The invention discloses a human cancer-related gene, LAPTM4B, its encoded products and their applications thereof. This human cancer-related gene provided by this invention comprises one of the following nucleotide sequences: (1) SEQ ID No: 1, SEQ ID No: 2, SEQ ID No: 3, SEQ ID No: 6, or SEQ ID No: 8 in the sequence listings; (2) Polynucleotides that encode the protein sequences of SEQ ID No: 4, SEQ ID No: 5, or SEQ ID No: 7 in the sequence listings; (3) DNA sequences having above 90% homology with the DNA sequences specified by SEQ ID No: 1, SEQ ID No: 2, SEQ ID No: 3, SEQ ID No: 6, or SEQ ID No: 8 in the sequence listings, and these DNA sequences encode the proteins with the same or similar functions. This invention enables the developments of new anti-cancer approaches and new anti-cancer medicines. It would create a significant impact on human society.Type: GrantFiled: May 4, 2016Date of Patent: October 18, 2016Assignee: Peking UniversityInventors: Rouli Zhou, Genze Shao, Xinrong Liu, Qingyun Zhang, Jingan Rui, Ye Zhang, Yueying Jin, Ming Lin, Sha Zhang
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Publication number: 20160297855Abstract: The present invention relates to an adeno-associated virus with site-directed mutagenesis and site-specific modification, and a preparation method and uses thereof. Specifically, the present invention uses genetic code expansion techniques to incorporate non-natural amino acid into an adeno-associated virus capsid protein VP1 or fragment thereof, thereby obtaining an adeno-associated virus with site-directed mutagenesis using the non-natural amino acid. The adeno-associated virus with site-directed mutagenesis is equivalent to a wild-type virus in terms of production, transduction and mobility, can couple with other functional molecules, such as targeting molecules, and can carry a functional gene in a normal manner, which indicates that the adeno-associated virus with site-directed mutagenesis can be used as a tool adeno-associated virus, and applied in various aspects associated with adeno-associated virus such as finding adeno-associated virus binding proteins or using as target genetic therapy vector.Type: ApplicationFiled: October 30, 2014Publication date: October 13, 2016Applicant: Peking UniversityInventors: Demin Zhou, Chuanling Zhang, Sulong Xiao, Tianzhuo Yao, Yongxiang Zheng, Fei Yu, Longlong Si, Lihe Zhang
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Patent number: 9442907Abstract: The present invention provides a disaster recovery method used in document editing, comprising: storing the document to a local copy directory to form a local copy while editing the document; submitting the document to a server when editing of the document is finished; if the document is submitted successfully, deleting the local copy; if the document is not submitted successfully, recovering the document by using the local copy. The present invention also provides an apparatus, comprising: a backup module, used to store a document to a local copy directory to form a local copy while editing the document; a submitting module, used to submit the document to a server when editing of the document is finished; a deleting module, used to delete the local copy if the document is submitted successfully; a recovery module, used to recover the document using the local copy if the document is not submitted successfully.Type: GrantFiled: December 2, 2013Date of Patent: September 13, 2016Assignees: Peking University Founder Group Co., Ltd., Beijing Founder Electronics Co., Ltd.Inventor: Xuewu Zhu
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Patent number: 9431620Abstract: The present invention discloses an organic resistive random access memory and a preparation method thereof. The memory uses silicon as a substrate, and has a MIM capacitor structure having a vertical memory unit, where the MIM structure has a top electrode of Al, a bottom electrode of ITO, and an middle functional layer of parylene, wherein, a parylene layer as the functional layer is formed by performing deposition multiple times, where the deposition of Al2O3 is performed once by ALD between each two deposition of parylene. A critical region which is in favor of forming a conductive channel could be formed by controlling the deposition area of Al2O3, and further control the electrical characteristics of the memory. Through the present invention, the cycle-to-cycle and device-to-device uniformity could be effectively improved, without changing the basic structure of the memory.Type: GrantFiled: September 30, 2013Date of Patent: August 30, 2016Assignee: Peking UniversityInventors: Yimao Cai, Yefan Liu, Wenliang Bai, Zongwei Wang, Yichen Fang, Ru Huang
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Patent number: 9430301Abstract: A distributed system for downloading distributed Internet information and a method thereof are disclosed. A distribution subsystem receives downloading task information from a user, and sends the downloading task information to a downloading subsystem. The downloading subsystem downloads task result information according to the downloading task information, and sends the task result information to the distribution subsystem. The distribution subsystem receives the task result information, and returns the task result information to the user made the request. The physical environment of the system can include a distribution server and a downloading subsystem group, the internal function of the system is to assign the required tasks to the downloading subsystem group based on a queue model, the downloading subsystem group can process the assigned tasks concurrently.Type: GrantFiled: December 3, 2013Date of Patent: August 30, 2016Assignees: Peking University Founder Group Co., Ltd., Peking University, Beijing Founder Electronics Co., Ltd.Inventors: Lei Yan, Xiao Liang, Xiaoming Yu, Jianwu Yang
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Patent number: 9425060Abstract: A method for fabricating multiple layers of ultra narrow silicon wires comprises the steps of fabricating wet-etch masking layers of silicon; forming a Fin and source/drain regions located at both ends thereof by epitaxy; forming the multiple layers of ultra narrow silicon wires. The present invention has advantages in that: the atom layer depositing may define the position of the ultra narrow silicon wires accurately, having a good controllability; the anisotropic wet-etch for silicon is performed in a self-stop manner and has a large process window, so that the cross-section shape of the nanowires formed by wet-etch is uniform and smooth.Type: GrantFiled: March 28, 2014Date of Patent: August 23, 2016Assignee: Peking UniversityInventors: Ming Li, Yuancheng Yang, Jiewen Fan, Haoran Xuan, Hao Zhang, Ru Huang
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Patent number: 9418051Abstract: A method for extracting a document structure is disclosed. The method may include determining a position of reference information in a layout file, and extracting items related to the reference information from the determined position of the layout file. An apparatus for extracting a document structure is also disclosed. The apparatus may include a processor configured to determine a position of reference information in a layout file; and to extract items related to the reference information from the determined position of the layout file. The apparatus may further include a storage device configured to store the extracted items.Type: GrantFiled: December 21, 2012Date of Patent: August 16, 2016Assignees: Peking University Founder Group Co., Ltd., Beijing Founder Apabi Technology Ltd.Inventors: Ning Dong, Jianbo Xu, Wenjuan Huang
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Publication number: 20160210538Abstract: Provided are a raster processing method and apparatus of a transparent Form. The method comprising: determining a reusable transparent Form in a page description file; performing syntax interpretation on the transparent Form to obtain a reuse type and position information of the transparent Form; generating a color block lattice, an Alpha block lattice, a Shape block lattice and their corresponding block attribute tables and block memory tables for the transparent Form, according to the reuse type and the position information, and establishing association relationships between different transparent Forms in the page description file; computing on the generated data information to obtain and buffer assembling information of the transparent Form, according to the reuse type of the transparent Form; determining an assembling manner of the transparent Form according to the reuse type of the transparent Form and assembling the transparent Form into the page to be outputted.Type: ApplicationFiled: November 1, 2013Publication date: July 21, 2016Applicants: Peking University Founder Group Co., Ltd., Founder Information Industry Holdings Co., Ltd., Beijing Founder Electronics Co., Ltd.Inventors: Yufang GAO, Zhangwei MENG
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Patent number: 9396949Abstract: The present invention discloses a method of adjusting a threshold voltage of a multi-gate structure device, wherein, preparing the multi-gate structure device to be formed to have a channel impurity distribution with high doping on surface and lowly doping inside, where while a threshold voltage is adjusted by using impurity doping, the influences of the Coulomb impurity scattering on the carriers is reduced as much as possible, so that the mobility of the carriers is maintained at a higher level. Firstly, the present solution is able to make a multi-gate device obtain a larger range of a multi-threshold voltage; it is convenient for the various demands of the device in the circuit designing by IC designers.Type: GrantFiled: September 30, 2013Date of Patent: July 19, 2016Assignee: Peking UniversityInventors: Ming Li, Jiewen Fan, Jia Li, Xiaoyan Xu, Ru Huang
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Patent number: 9390075Abstract: The present disclosure provides a method and apparatus for acquiring a content information of a page, by acquiring an access link primary address and an access link secondary address of a website, and then determining a layout page corresponding to the website through the access link primary address and the access link secondary address, and extracting summary information of each post included in the layout page from a source code file of the layout page; and acquiring a link address of each post from the summary information, determining a post page of each post according to the link address, and extracting content information of each post from a source code file of the post page, the method disclosed in the present disclosure could acquire latest initiating post and replying post information published on the bulletin board system website can in real time, and acquire replying posts incrementally.Type: GrantFiled: August 12, 2013Date of Patent: July 12, 2016Assignees: Peking University Founder Group Co., Ltd., Peking University, Beijing Founder Electronics Co., Ltd.Inventors: Xinli Wu, Jianwu Yang
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Patent number: 9379322Abstract: The present invention relates to a highly reliable nonvolatile memory and a manufacturing method thereof. The nonvolatile memory comprises top electrodes, bottom electrodes and a resistive material layer disposed therebetween, wherein the top electrodes are positioned on top in the memory; the bottom electrodes are positioned on a substrate; metal oxide for forming the resistive material layer is doped with metal; and a metal oxygen storage layer is further disposed between the top electrodes and the resistive material layer. The manufacturing method adopts a method in which a doping method and a double-layer forming method are combined, so that the highly reliable and highly uniform resistive random access memory can be fabricated and accordingly the performance of the memory can be increased.Type: GrantFiled: September 30, 2013Date of Patent: June 28, 2016Assignee: Peking UniversityInventors: Ru Huang, Muxi Yu, Yimao Cai, Wenliang Bai, Yinglong Huang
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Patent number: 9371304Abstract: The present invention discloses a compound separated from Monascus-fermented rice, the preparation method and uses thereof. Specifically, the present invention discloses a compound represented by the Formula I, or a pharmaceutically acceptable salt thereof, wherein, R1 is selected from the group consisting of hydrogen, hydroxyl, C1-6 straight or branched alkoxyl, (II), (III) and (IV); R2 is hydrogen or C1-6 alkyl; R3 is selected from the group consisting of hydrogen, hydroxyl and C1-6 straight or branched alkoxyl. The present invention further discloses a pharmaceutical composition containing the compound. The compound of the present invention has HMG-CoA reductase inhibition effects.Type: GrantFiled: January 10, 2012Date of Patent: June 21, 2016Assignee: Beijing Peking University WBL Biotech Co. LtdInventors: Zhenwen Duan, Shuren Guo, Xuemei Li, Chunli Liu
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Patent number: 9356124Abstract: A method for fabricating a multi-gate structure device with a source and a drain having a quasi-SOI structure, comprising forming an active region in a shape of a fin bar, forming an oxide isolation layer for shallow trench isolation (STI), forming a polysilicon dummy gate, forming source and drain extension regions, forming the source and the drain with the quasi-SOI structure, and forming a high-K metal gate. Solution(s) consistent with the present innovations may be achieved by using a process method compatible with the conventional bulk silicon CMOS processes and can be easily integrated into the process flow. Moreover, innovations here may provide a small leakage current even in a case of having a short channel length, thereby reducing the power consumption of the device.Type: GrantFiled: September 30, 2013Date of Patent: May 31, 2016Assignee: Peking UniversityInventors: Ru Huang, Jiewen Fan, Jia Li, Xiaoyan Xu, Ming Li
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Patent number: 9348848Abstract: A method for identifying a table in a digital file includes extracting lines from a layout of the digital file, wherein the lines comprise horizontal lines and vertical lines. The method also includes identifying intersected line groups, wherein each intersected line group comprises a horizontal line of the extracted horizontal lines and a vertical line of the extracted vertical lines, the horizontal line and the vertical line intersecting with each other. The method further includes determining whether the number of intersected lines in each intersected line group is larger than a first threshold. If yes, the method further includes identifying an area in which the intersected line groups are located as a table area. If no, the method further includes performing vertical projection on characters in the area, and identifying the area as a table area based on results of the vertical projection.Type: GrantFiled: April 26, 2013Date of Patent: May 24, 2016Assignees: Peking University Founder Group Co., Ltd., Beijing Founder Apabi Technology Ltd.Inventors: Ning Dong, Wenjuan Huang
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Patent number: 9340428Abstract: The present application relates to a method of increasing density of aligned carbon nanotubes. Firstly, aligned carbon nanotubes grown on a substrate is transferred to a stretched retractable film. The retractable film is then shrunk along a direction which is perpendicular to the alignment direction of the carbon nanotubes to obtain high density carbon nanotubes. The array of aligned carbon nanotubes is finally transferred from the retractable film to a target substrate. The disclosed method can efficiently obtain high-density high-quality aligned carbon nanotubes at low cost.Type: GrantFiled: August 7, 2014Date of Patent: May 17, 2016Assignee: Peking UniversityInventors: Jia Si, Zhiyong Zhang, Lianmao Peng