Patents by Inventor Wenming Zhu
Wenming Zhu 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: 20250240018Abstract: A mixed-signal operational circuit is provided. For the operational circuit part of the mixed-signal operational circuit, a first capacitor is used to determine the output terminal of the logic operational circuit, a second capacitor is used to provide a certain voltage, and a logic operational channel selects the charge channel from the second capacitor to the first capacitor based on the data signal of each input, so as to superimpose the voltage value at the output terminal. Time-division multiplexing is achieved through successive injection, thereby an analog voltage value related to the logical operation result is established at the output terminal.Type: ApplicationFiled: May 6, 2024Publication date: July 24, 2025Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Chao Wang, Wenming Zhu, Ziyuan Wen, Guoyi Yu, Yuansheng Zhao
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Publication number: 20240290846Abstract: A forming method for a floating contact hole, and a semiconductor device. The method comprises: obtaining a substrate, and forming a tunnel oxide layer and a plurality of gates on the substrate; forming a metal silicide barrier layer; forming a self-aligned metal silicide; forming an interlayer dielectric layer; performing photoetching on the interlayer dielectric layer to obtain a photoresist pattern, the photoresist pattern comprising a small adhesive strip in the middle of the floating contact hole; and etching the floating contact hole by using the photoresist pattern as an etching mask layer.Type: ApplicationFiled: April 28, 2022Publication date: August 29, 2024Inventors: Qun LIU, Song ZHANG, Yaohui ZHOU, Dejin WANG, Wenming ZHU
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Patent number: 11393982Abstract: The invention relates to a 9,10-dihydro-acridine derivative having a structure of Formula (I). The HOMO and LUMO levels of the 9,10-dihydro-acridine derivative are distributed on different electron donating and electron withdrawing groups, such that the HOMO and LUMO levels are separated, achieving a small ?EST. The 9,10-dihydro-acridine derivative can be used as a TADF material in an organic light-emitting device. The dihydro-acridinyl group in the electron donating group is linked to a dibenzoheterocyclic ring. Introducing modifying groups allows adjustment of triplet and singlet energy levels of the compound, enabling the TADF material to have a high luminescence efficiency in blue and deep blue regions. The invention also relates to an organic light-emitting device having at least one functional layer containing the 9,10-dihydro-acridine derivative. When the compound is used as a guest luminescent material in a light emitting layer, an OLED device of high blue light emitting efficiency is obtained.Type: GrantFiled: January 30, 2019Date of Patent: July 19, 2022Assignee: NINGBO LUMILAN ADVANCED MATERIALS CO., LTD.Inventors: Hua Sun, Wenming Zhu, Zhi Kuan Chen
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Patent number: 11158814Abstract: The present invention discloses a 9,10-dihydro-acridine derivative having a structure of Formula (I). The compound has a suitable HOMO energy level that matches that of an anode and light emitting layer when used as a material of a hole transport layer, thus reducing the potential barrier needed to overcome when holes are transported to the light emitting layer, and reducing the operating voltage of the device. Moreover, the 9,10-dihydro-acridine derivative has high triplet energy level and LUMO level, to avoid the returning of energy from the light emitting layer, retain the electrons in the light emitting layer, increase the probability of recombination of electrons and holes in the light emitting layer, and enhance the luminescence efficiency of the device. The compound of Formula (I) has high glass transition temperature, good film forming performance, and high thermal stability.Type: GrantFiled: January 30, 2019Date of Patent: October 26, 2021Assignee: NINGBO LUMILAN ADVANCED MATERIALS CO., LTDInventors: Hua Sun, Wenming Zhu, Kunshan Xie, Zhi Kuan Chen
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Publication number: 20200091436Abstract: The invention relates to a 9,10-dihydro-acridine derivative having a structure of Formula (I). The HOMO and LUMO levels of the 9,10-dihydro-acridine derivative are distributed on different electron donating and electron withdrawing groups, such that the HOMO and LUMO levels are separated, achieving a small ?EST. The 9,10-dihydro-acridine derivative can be used as a TADF material in an organic light-emitting device. The dihydro-acridinyl group in the electron donating group is linked to a dibenzoheterocyclic ring. Introducing modifying groups allows adjustment of triplet and singlet energy levels of the compound, enabling the TADF material to have a high luminescence efficiency in blue and deep blue regions. The invention also relates to an organic light-emitting device having at least one functional layer containing the 9,10-dihydro-acridine derivative. When the compound is used as a guest luminescent material in a light emitting layer, an OLED device of high blue light emitting efficiency is obtained.Type: ApplicationFiled: January 30, 2019Publication date: March 19, 2020Inventors: Hua SUN, Wenming ZHU, Zhi Kuan CHEN
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Publication number: 20200091437Abstract: The present invention discloses a 9,10-dihydro-acridine derivative having a structure of Formula (I). The compound has a suitable HOMO energy level that matches that of an anode and light emitting layer when used as a material of a hole transport layer, thus reducing the potential barrier needed to overcome when holes are transported to the light emitting layer, and reducing the operating voltage of the device. Moreover, the 9,10-dihydro-acridine derivative has high triplet energy level and LUMO level, to avoid the returning of energy from the light emitting layer, retain the electrons in the light emitting layer, increase the probability of recombination of electrons and holes in the light emitting layer, and enhance the luminescence efficiency of the device. The compound of Formula (I) has high glass transition temperature, good film forming performance, and high thermal stability.Type: ApplicationFiled: January 30, 2019Publication date: March 19, 2020Inventors: Hua SUN, Wenming ZHU, Kunshan XIE, Zhi Kuan CHEN
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Patent number: 9670245Abstract: Provided are several types of ginsenoside polymorphic substances and a method for preparing same. In particular, new crystal form A, crystal form B, crystal form C, crystal form E, crystal form F, crystal form I, crystal form K, crystal form L, crystal form M, crystal form N, and crystal form O are involved.Type: GrantFiled: April 1, 2013Date of Patent: June 6, 2017Assignee: Zhejiang Hisun Pharmaceutical Co., Ltd.Inventors: Guobin Ren, Changliang Dai, Jinyao Chen, Feng Chen, Minghui Qi, Wenming Zhu, Minghuang Hong, Hua Bai
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Patent number: 9643992Abstract: Provided are ginsenoside C-K polymorphic forms and a method for preparing same. The ginsenoside C-K polymorphic forms are crystal form D and crystal form H.Type: GrantFiled: April 1, 2013Date of Patent: May 9, 2017Assignee: Zhejiang Hisun Pharmaceutical Co., Ltd.Inventors: Guobin Ren, Changliang Dai, Jinyao Chen, Feng Chen, Minghui Qi, Wenming Zhu, Minghuang Hong, Hua Bai
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Publication number: 20150065699Abstract: Provided are several types of ginsenoside polymorphic substances and a method for preparing same. In particular, new crystal form A, crystal form B, crystal form C, crystal form E, crystal form F, crystal form I, crystal form K, crystal form L, crystal form M, crystal form N, and crystal form O are involved.Type: ApplicationFiled: April 1, 2013Publication date: March 5, 2015Applicant: Zhejiang Hisun Pharmaceutical Co., Ltd.Inventors: Guobin Ren, Changliang Dai, Jinyao Chen, Feng Chen, Minghui Qi, Wenming Zhu, Minghuang Hong, Hua Bai
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Publication number: 20150057440Abstract: Provided are ginsenoside C-K polymorphic forms and a method for preparing same. The ginsenoside C-K polymorphic forms are crystal form D and crystal form H.Type: ApplicationFiled: April 1, 2013Publication date: February 26, 2015Applicant: Zhejiang Hisun Pharmaceutical Co., Ltd.Inventors: Guobin Ren, Changliang Dai, Jinyao Chen, Feng Chen, Minghui Qi, Wenming Zhu, Minghuang Hong, Hua Bai
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Publication number: 20110088051Abstract: A method, an apparatus, and a system for recommending media content beyond existing single form of media content recommendation through selection of content from Electronic Program Guide (EPG) menus. The method includes: detecting media content recommendation trigger events; generating media content recommendation information according to a preset media content recommendation policy when a media content recommendation trigger event is detected; and sending the generated media content recommendation information to a user terminal. The method, apparatus and system for recommending media content are applicable to Internet Protocol Television (IPTV) networks.Type: ApplicationFiled: December 20, 2010Publication date: April 14, 2011Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Wenming ZHU, Baojian QI
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Publication number: 20090260033Abstract: Systems, apparatuses, and methods for implementing IPTV service are disclosed according to the present invention. In particular, a user equipment initiates an IPTV service request to an IPTV application subsystem in an IMS session. The IPTV application subsystem acquires content description from a service selection function entity according to the IPTV service request, and enables a multimedia delivery subsystem to provide content to the user equipment based on the acquired content description. According to the present invention, a content description function entity is provided in the system. The content description function entity is able to provide content description which may be utilized in the IMS session procedure for the purpose of implementing IPTV service.Type: ApplicationFiled: June 24, 2009Publication date: October 15, 2009Applicant: Huawei Technologies Co., Ltd.Inventors: Wenming Zhu, Jun Yan, Xiangyang Wu, Feng Wang