Patents by Inventor Wei-Chang Tsai
Wei-Chang Tsai 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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Patent number: 11923251Abstract: A method includes forming a gate stack, which includes a gate dielectric and a metal gate electrode over the gate dielectric. An inter-layer dielectric is formed on opposite sides of the gate stack. The gate stack and the inter-layer dielectric are planarized. The method further includes forming an inhibitor film on the gate stack, with at least a portion of the inter-layer dielectric exposed, selectively depositing a dielectric hard mask on the inter-layer dielectric, with the inhibitor film preventing the dielectric hard mask from being formed thereon, and etching to remove a portion of the gate stack, with the dielectric hard mask acting as a portion of a corresponding etching mask.Type: GrantFiled: May 7, 2021Date of Patent: March 5, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Tsu-Hsiu Perng, Kai-Chieh Yang, Zhi-Chang Lin, Teng-Chun Tsai, Wei-Hao Wu
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Patent number: 9470571Abstract: A liquid level measuring device comprises an inner-tube unit having an inner tube and at least one inner-tube coil surrounding the inner tube; an outer-tube unit having a plurality of outer tubes, each outer tube having a plurality of outer-tube coils disposed thereon, the outer tubes being stacked, the inner tube being arranged inside the outer tubes and being risen and fallen as a level of a liquid in the outer tubes varies; and a control unit electrically connecting to the respective outer-tube coils, the control unit transmitting a set of position coded signals to the outer-tube coils disposed on an individual outer tube, the control unit determining the liquid level according to an induced signal generated by the inner-tube coil. Said device has many advantages including low cost and modular design, and such a device is easily to be deployed.Type: GrantFiled: October 21, 2014Date of Patent: October 18, 2016Assignee: NATIONAL APPLIED RESEARCH LABORATORIESInventors: Chun-Ming Huang, Gang-Neng Sung, Chen-Chia Chen, Wei-Chang Tsai
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Patent number: 9335201Abstract: The present invention provides a liquid level measuring device which comprises: a tube for accommodating a liquid; a floating member disposed inside the tube, the floating member rising and falling as the level of the liquid varies; at least one magnetic detecting element fastened to the floating member, the magnetic detecting element floating along with the floating member; and a plurality of magnetic sources disposed outside the tube, which are distributed separately along the changing direction of the liquid level so as to establish a specific magnetic field strength distribution, wherein the magnetic detecting element detects the magnetic field strength at the height at which the magnetic detecting element is located and outputs a measuring signal correspondingly, and the liquid level is determined according to the measuring signal. The present invention has many advantages including low cost, efficiency, and it can easily be deployed in considerable amounts.Type: GrantFiled: December 24, 2013Date of Patent: May 10, 2016Assignee: NATIONAL APPLIED RESEARCH LABORATORIESInventors: Chun-Ming Huang, Wei-Chang Tsai, Chen-Chia Chen
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Publication number: 20160054165Abstract: A liquid level measuring device comprises an inner-tube unit having an inner tube and at least one inner-tube coil surrounding the inner tube; an outer-tube unit having a plurality of outer tubes, each outer tube having a plurality of outer-tube coils disposed thereon, the outer tubes being stacked, the inner tube being arranged inside the outer tubes and being risen and fallen as a level of a liquid in the outer tubes varies; and a control unit electrically connecting to the respective outer-tube coils, the control unit transmitting a set of position coded signals to the outer-tube coils disposed on an individual outer tube, the control unit determining the liquid level according to an induced signal generated by the inner-tube coil. Said device has many advantages including low cost and modular design, and such a device is easily to be deployed.Type: ApplicationFiled: October 21, 2014Publication date: February 25, 2016Inventors: Chun-Ming HUANG, Gang-Neng SUNG, Chen-Chia CHEN, Wei-Chang TSAI
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Publication number: 20150153214Abstract: The present invention provides a liquid level measuring device which comprises: a tube for accommodating a liquid; a floating member disposed inside the tube, the floating member rising and falling as the level of the liquid varies; at least one magnetic detecting element fastened to the floating member, the magnetic detecting element floating along with the floating member; and a plurality of magnetic sources disposed outside the tube, which are distributed separately along the changing direction of the liquid level so as to establish a specific magnetic field strength distribution, wherein the magnetic detecting element detects the magnetic field strength at the height at which the magnetic detecting element is located and outputs a measuring signal correspondingly, and the liquid level is determined according to the measuring signal. The present invention has many advantages including low cost, efficiency, and it can easily be deployed in considerable amounts.Type: ApplicationFiled: December 24, 2013Publication date: June 4, 2015Applicant: National Applied Research LaboratoriesInventors: Chun-Ming HUANG, Wei-Chang TSAI, Chen-Chia CHEN
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Publication number: 20150153152Abstract: The present invention provides a magnetic device for measuring scour depth. The magnetic device comprises a plurality of scour detecting units which are buried in the sediment and disposed at intervals along the direction perpendicular to the surface of water. Each scour detecting unit comprises: one or more magnetic sources; and one or more magnetic detecting elements configured to be apart from the magnetic source for a predetermined distance. The magnetic detecting element is utilized to detect the magnetic field generated by the magnetic source. The scour depth and the position where scour occurs are determined according to electronic signals corresponding to the magnetic strength detected by the respective magnetic detecting elements of the scour detecting units. The magnetic device of the present invention has many advantages including low cost, high efficiency, and such a device is easily deployed.Type: ApplicationFiled: December 24, 2013Publication date: June 4, 2015Applicant: National Applied Research LaboratoriesInventors: Chun-Ming HUANG, Wei-Chang TSAI, Chen-Chia CHEN
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Publication number: 20110282831Abstract: A device including a virtual drive system is provided. An image file can be identified as an ordinary physical disk drive via the device. The device includes a storage unit, an image management unit, and an operating-system interface. The storage unit is configured to store at least one image file. The image management unit includes an image management program which can manage the image files to be selected. The operating-system interface is connected by electrical signals with an operating-system apparatus and is controlled by the image management program to send a controlling signal to the operating-system apparatus. Therefore, the operating-system apparatus can identify as many physical disk drives as the corresponding selected image files.Type: ApplicationFiled: June 23, 2010Publication date: November 17, 2011Applicant: National Chip Implementation Center National Applied Research LaboratoriesInventors: Chun-Ming Huang, Chien-Ming Wu, Wei-De Chien, Wei-Chang Tsai, Chin-Long Wey, Yu-Tsang Chang
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Publication number: 20020114449Abstract: A modular multiplier and an encryption/decryption processor using the modular multiplier, which is mainly applied in a chip to have the needs of small size and faster operation. In the modular multiplier, Montgomery algorithm is realized, the operand is divided into the fixed-length data, and the desired result is provided by the iterative calculation. In the algorithm, two recursive structures include the multiplication operation first and the addition operation later. By the multiplexer to data path's choice, the desired result of modular multiplication can be calculated by a single data path at different time points.Type: ApplicationFiled: July 26, 2001Publication date: August 22, 2002Applicant: Goldkey Technology CorporationInventors: Chun-Yang Cheng, Wei-Chang Tsai
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Patent number: 5280653Abstract: A toilet-seat flush-valve operating device has an energy transceiver, a connecting portion and a control portion. When adapted to conventional toilet equipment, the device serves to raise and lower the toilet seat automatically. If necessary, a flush-valve opening arrangement is mounted between the energy transceiver and the flush valve so that the device also operates to automatically open the flush valve at the appropriate time. The toilet seat stays at a slightly forwardly inclined vertical position and always tends to fall under its own weight. When an outside force is applied to the control portion, which is capable of transmitting the outside force to the energy transceiver, comprised of a spring and/or a dead weight, the energy transceiver is driven and releases the toilet seat from the control of a linkage mechanism, thereby permitting the seat to fall under its own weight.Type: GrantFiled: October 5, 1992Date of Patent: January 25, 1994Inventor: Wei-Chang Tsai