Patents by Inventor Wei-Cheng Tang
Wei-Cheng Tang 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: 20190149146Abstract: This invention discloses an active load generation circuit and a filter. The active load generation circuit includes a transistor, a voltage control circuit, a voltage offset and tracking circuit, and a temperature sensing circuit. The transistor provides an impedance and includes a control terminal and an input terminal. The control terminal receives a control voltage, the input terminal receives an input signal, and the impedance is associated with the control voltage. The voltage control circuit generates an intermediate voltage according to a power supply voltage and a first reference voltage. The voltage offset and tracking circuit generates the control voltage according to the input signal and the intermediate voltage such that the control voltage varies with the input signal. The temperature sensing circuit senses an ambient temperature of the active load generation circuit and adjusts the first reference voltage according to the ambient temperature.Type: ApplicationFiled: October 12, 2018Publication date: May 16, 2019Inventors: WEI-CHENG TANG, KUOHSI WU
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Publication number: 20180179416Abstract: The embodiments of the present disclosure provide a coating composition, including: polysilsesquioxane polymer modified organic resin represented by Formula (1): Wherein, R1 is C3-12 epoxy group, C3-12 acrylate group, C3-12 alkylacryloxy group, C3-12 aminoalkyl group, C3-12 isocyanate-alkyl group, C3-12 alkylcarboxylic acid group, C3-12 alkyl halide group, C3-12 mercaptoalkyl group, C3-12 alkyl group, or C3-12 alkenyl group; R2 is half oxygen(O1/2), hydroxyl group, C1-8 alkyl group, or C1-8 alkoxy group; R3 is halide group, C1-8 alkyl halide group, C1-8 alkoxy group, C1-12 alkyl group, or C5-20 aromatic ring; R4 is hydrogen or C1-8 alkyl group; R5 is modified or unmodified carbonyl compound moiety; n is a positive integer from 1 to 200; m is a positive integer from 10 to 500, and s is an integer from 0 to 250.Type: ApplicationFiled: December 27, 2017Publication date: June 28, 2018Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Yuan-Chang HUANG, Ya-I HSU, Yi-Che SU, Wei-Cheng TANG, Shu-Yun CHIEN
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Patent number: 9906123Abstract: Disclosed is a charge-pump and a dynamic charge-pump device including the same. By switching the plurality of voltage sources, the output voltage of the charge-pump can be compensated, and changed output voltage of the charge pump is utilized to adjust a voltage as power source or ground source of a loading circuit. A detection circuit may further be included in the charge-pump for detecting the voltage or current of the loading circuit, and the minimum output voltage of the charge pump may be chosen to adjust the voltage-drop of the loading circuit, and the variation of the voltage of the loading circuit can be brought back within a predetermined range, such that the operational efficiency of the loading circuit may not be influenced. Moreover, the adjustment may be performed according to the different operation modes of the loading circuit, and the power consumption can be decreased.Type: GrantFiled: July 18, 2016Date of Patent: February 27, 2018Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Wei-Cheng Tang, Chih-Kang Chien
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Patent number: 9796878Abstract: The disclosure provides a coating composition, a film made of the coating composition, and method for preparing the coating composition. The coating composition includes a product prepared from cross-linking a (a) polysilsesquioxane with a (b) compound with the structure represented by Formula (I): wherein R is independently a hydroxyl group, or C1-8 alkoxy group, R1 is a C3-12 epoxy group, C3-12 acrylate group, C3-12 alkylacryloxy group, C3-12 aminoalkyl group, C3-12 isocyanate-alkyl group, C3-12 alkylcarboxylic acid group, C3-12 alkyl halide group, C3-12 mercaptoalkyl group, C3-12 alkyl group, or C3-12 alkenyl group, and R2 is a hydroxyl group, C1-8 alkyl group, or C1-8 alkoxy group.Type: GrantFiled: July 22, 2013Date of Patent: October 24, 2017Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Yuan-Chang Huang, Wei-Cheng Tang, Shu-Yun Chien, Yuung-Ching Sheen, Yih-Her Chang, Jer-Young Chen
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Patent number: 9758624Abstract: A method for forming an inorganic passivation material is provided. The method includes mixing about 5 to 80 parts by weight of trialkoxysilane, about 10 to 80 parts by weight of tetraalkoxysilane, and about 1 to 30 parts by weight of catalyst to perform a reaction at pH of about 0.05 to 4 to form an inorganic resin material. The inorganic resin material is modified by phosphate ester to form an inorganic passivation material, wherein phosphate ester is about 0.1-10 parts by weight based on 100 parts by weight of the inorganic resin material. An inorganic passivation material and a passivation protective film produced therefrom are also provided.Type: GrantFiled: June 16, 2014Date of Patent: September 12, 2017Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wei-Cheng Tang, Yun-Shan Huang, Ya-Tin Yu, Yi-Che Su, Yuung-Ching Sheen, Yuan-Chang Huang
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Patent number: 9695333Abstract: A resin composition formed by reacting a polyester-polyacid oligomer with a poly-epoxy oligomer is provided. The functionality of the resin composition is between 4 and 10. The weight average molecular weight of the resin composition is between 3,000 and 20,000 g/mol.Type: GrantFiled: July 23, 2015Date of Patent: July 4, 2017Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wei-Cheng Tang, Su-Mei Chen Wei, Yi-Che Su, Ya-I Hsu, Yi-Tzu Peng
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Patent number: 9688866Abstract: A method of manufacturing a hydrophobic antifouling coating material, including: (a) mixing a sol-gel precursor, water, an aqueous colloidal silica suspension, and a catalyst to perform a sol-gel reaction to form a solution having particles therein, wherein the sol-gel reaction is performed without addition of any organic solvent; (b) chemically modifying the particles with a hydrophobic agent to form surface-modified particles; and (c) adding a surfactant to the solution containing the surface-modified particles to form a hydrophobic antifouling coating material. The hydrophobic antifouling coating material can be dispersed in an aqueous solution, and has properties such as low VOC (Volatile organic compound) value, high solid content, and high stability.Type: GrantFiled: December 27, 2013Date of Patent: June 27, 2017Assignees: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, BEHR PROCESS CORPORATIONInventors: Yi-Che Su, Wei-Cheng Tang, Yuung-Ching Sheen, Yun-Shan Huang, Ming-Ren Tarng, Chenchen Xue
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Publication number: 20170145243Abstract: A method of manufacturing a hydrophobic material is provided, which includes: (a) mixing a sol-gel precursor, water, and catalyst to perform a sol-gel reaction for forming a solution having particles therein, (b) modifying the particles with a hydrophobic agent to form surface-modified particles, (c) adding a small-molecular surfactant to the solution containing the surface-modified particles to form a first dispersion, (d) mixing a resin, a water soluble polymer, and water to form a second dispersion, and (e) mixing the first dispersion and the second dispersion to obtain a hydrophobic material.Type: ApplicationFiled: December 30, 2015Publication date: May 25, 2017Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wei-Cheng TANG, Yi-Che SU, Yun-Shan HUANG
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Publication number: 20170110960Abstract: Disclosed is a charge-pump and a dynamic charge-pump device including the same. By switching the plurality of voltage sources, the output voltage of the charge-pump can be compensated, and changed output voltage of the charge pump is utilized to adjust a voltage as power source or ground source of a loading circuit. A detection circuit may further be included in the charge-pump for detecting the voltage or current of the loading circuit, and the minimum output voltage of the charge pump may be chosen to adjust the voltage-drop of the loading circuit, and the variation of the voltage of the loading circuit can be brought back within a predetermined range, such that the operational efficiency of the loading circuit may not be influenced. Moreover, the adjustment may be performed according to the different operation modes of the loading circuit, and the power consumption can be decreased.Type: ApplicationFiled: July 18, 2016Publication date: April 20, 2017Inventors: Wei-Cheng Tang, Chih-Kang Chien
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Publication number: 20160185895Abstract: A resin composition formed by reacting a polyester-polyacid oligomer with a poly-epoxy oligomer is provided. The functionality of the resin composition is between 4 and 10. The weight average molecular weight of the resin composition is between 3,000 and 20,000 g/mol.Type: ApplicationFiled: July 23, 2015Publication date: June 30, 2016Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wei-Cheng TANG, Su-Mei Chen WEI, Yi-Che SU, Ya-I HSU, Yi-Tzu PENG
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Patent number: 9287888Abstract: A converter with an additional DC offset includes a switch circuit, a first capacitor, a plurality of additional capacitor cells and an operational amplifier. The converter uses a first additional capacitor cell and a second additional capacitor cell having a capacitor difference with the first additional capacitor to store two charges having different polarity and magnitude with each other, and further generate an inverted DC offset according to a difference between the two charges to compensate a DC offset.Type: GrantFiled: January 2, 2015Date of Patent: March 15, 2016Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Ming-Cheng Chiang, Wei-Cheng Tang
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Publication number: 20150194976Abstract: A converter with an additional DC offset and method thereof is disclosed in the present invention. The converter includes a switch circuit, a first capacitor, a plurality of additional capacitor cells and an operational amplifier. The switch circuit includes a plurality of switches. The first capacitor stores a first charge according to the switching control of the switch circuit. The plurality of additional capacitor cells includes a first additional capacitor cell and a second additional capacitor cell. There is a capacitor difference between the first additional capacitor cell and the second additional capacitor cell. The first additional capacitor cell and the second additional capacitor cell store a second charge and a third charge having different polarity and magnitude with the second charge according to the switching control of the switch circuit. The operation amplifier generates a DC bias according to the first charge wherein the DC bias includes a DC offset.Type: ApplicationFiled: January 2, 2015Publication date: July 9, 2015Inventors: Ming-Cheng CHIANG, Wei-Cheng TANG
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Publication number: 20150183999Abstract: A method of manufacturing a hydrophobic antifouling coating material, including: (a) mixing a sol-gel precursor, water, an aqueous colloidal silica suspension, and a catalyst to perform a sol-gel reaction to form a solution having particles therein, wherein the sol-gel reaction is performed without addition of any organic solvent; (b) chemically modifying the particles with a hydrophobic agent to form surface-modified particles; and (c) adding a surfactant to the solution containing the surface-modified particles to form a hydrophobic antifouling coating material. The hydrophobic antifouling coating material can be dispersed in an aqueous solution, and has properties such as low VOC (Volatile organic compound) value, high solid content, and high stability.Type: ApplicationFiled: December 27, 2013Publication date: July 2, 2015Applicants: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Behr Process CorporationInventors: Yi-Che SU, Wei-Cheng TANG, Yuung-Ching SHEEN, Yun-Shan HUANG, Ming-Ren Tarng, Chenchen Xue
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Publication number: 20150183936Abstract: A method for forming an inorganic passivation material is provided. The method includes mixing about 5 to 80 parts by weight of trialkoxysilane, about 10 to 80 parts by weight of tetraalkoxysilane, and about 1 to 30 parts by weight of catalyst to perform a reaction at pH of about 0.05 to 4 to form an inorganic resin material. The inorganic resin material is modified by phosphate ester to form an inorganic passivation material, wherein phosphate ester is about 0.1-10 parts by weight based on 100 parts by weight of the inorganic resin material. An inorganic passivation material and a passivation protective film produced therefrom are also provided.Type: ApplicationFiled: June 16, 2014Publication date: July 2, 2015Inventors: Wei-Cheng TANG, Yun-Shan HUANG, Ya-Tin YU, Yi-Che SU, Yuung-Ching SHEEN, Yuan-Chang HUANG
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Patent number: 9008247Abstract: A communication circuit and a communication device are provided. The communication circuit includes first, second, and third RF transceivers, first and second baseband transceivers, and first and second modem circuits. The first and second RF transceivers are configured to down-convert first and second RF signals for MIMO. The third RF transceiver is configured to down-convert a third RF signal for a second telecommunication technology. The first baseband transceiver is configured to digitize the down-converted first RF signal to output a first baseband signal. The second baseband transceiver is configured to digitize one of the down-converted second or third RF signals according to a selection signal to output a second baseband signal. The first modem circuit is configured to digitally process the first and second baseband signals using the MIMO technology. The second modem circuit is configured to digitally process the second baseband signal using the second telecommunication technology.Type: GrantFiled: June 7, 2013Date of Patent: April 14, 2015Assignee: MediaTek Inc.Inventors: Wei-Cheng Tang, Juiyuan Tsai, Pao-Cheng Chiu
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Publication number: 20140362936Abstract: A communication circuit and a communication device are provided. The communication circuit includes first, second, and third RF transceivers, first and second baseband transceivers, and first and second modem circuits. The first and second RF transceivers are configured to down-convert first and second RF signals for MIMO. The third RF transceiver is configured to down-convert a third RF signal for a second telecommunication technology. The first baseband transceiver is configured to digitize the down-converted first RF signal to output a first baseband signal. The second baseband transceiver is configured to digitize one of the down-converted second or third RF signals according to a selection signal to output a second baseband signal. The first modem circuit is configured to digitally process the first and second baseband signals using the MIMO technology. The second modem circuit is configured to digitally process the second baseband signal using the second telecommunication technology.Type: ApplicationFiled: June 7, 2013Publication date: December 11, 2014Applicant: Media Tek Inc.Inventors: Wei-Cheng TANG, Juiyuan TSAI, Pao-Cheng CHIU
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Publication number: 20140174321Abstract: The disclosure provides a coating composition, a film made of the coating composition, and method for preparing the coating composition. The coating composition includes a product prepared from cross-linking a (a) polysilsesquioxane with a (b) compound with the structure represented by Formula (I): wherein R is independently a hydroxyl group, or C1-8 alkoxy group, R1 is a C3-12 epoxy group, C3-12 acrylate group, C3-12 alkylacryloxy group, C3-12 aminoalkyl group, C3-12 isocyanate-alkyl group, C3-12 alkylcarboxylic acid group, C3-12 alkyl halide group, C3-12 mercaptoalkyl group, C3-12 alkyl group, or C3-12 alkenyl group, and R2 is a hydroxyl group, C1-8 alkyl group, or C1-8 alkoxy group.Type: ApplicationFiled: July 22, 2013Publication date: June 26, 2014Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Yuan-Chang HUANG, Wei-Cheng TANG, Shu-Yun CHIEN, Yuung-Ching SHEEN, Yih-Her CHANG, Jer-Young CHEN
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Publication number: 20140170403Abstract: The present disclosure provides a method for forming an inorganic polymer material, including mixing 10 to 80 parts by weight of tetraalkoxysilane and 10 to 80 parts by weight of trialkoxysilane to form a mixture; and performing a reaction at pH of 0 to 4 by adding 5 to 30 parts by weight of a catalyst to the mixture to form an inorganic polymer material.Type: ApplicationFiled: May 9, 2013Publication date: June 19, 2014Applicant: Industrial Technology Research InstituteInventors: Wei-Cheng TANG, Yuung-Ching SHEEN, Yuan-Chang HUANG, Yi-Che SU, Yun-Shan HUANG, Yih-Her CHANG, Jen-Lien LIN
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Patent number: 8419808Abstract: The present invention relates to a dye compound represented by the following formula (I), or a salt thereof: wherein R1, R2, R3, R4, D1, D2, B, and n are defined the same as the specification, and also relates to a photoelectric component using the same. The dye compound of the present invention is suitable for Dye-Sensitized Solar Cell (DSSC). Hence, the photoelectric characteristics of the DSSC can be improved by using the dye compound of the present invention.Type: GrantFiled: November 2, 2011Date of Patent: April 16, 2013Assignee: Everlight USA, Inc.Inventors: Ming-si Wu, Wei-Cheng Tang
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Publication number: 20130089670Abstract: A method of manufacturing a hydrophobic coating material, including: (a) mixing a siloxane precursor, water, and a catalyst to proceed with a sol-gel reaction to form a solution having particles therein, wherein the sol-gel reaction is performed without using any organic solvent; (b) chemically modifying the particles with a hydrophobic agent to form surface-modified particles; and (c) adding a surfactant to the solution containing the surface-modified particles to form a hydrophobic coating material. A hydrophobic coating material and a hydrophobic coating formed by the hydrophobic coating material are also provided. The hydrophobic coating material may preferably have a low VOC (Volatile organic compound) value, and may disperse in a water phase solution.Type: ApplicationFiled: May 4, 2012Publication date: April 11, 2013Inventors: Yi-Che Su, Ya-Tin Yu, Yun-Shan Huang, Wei-Cheng Tang, Yuung-Ching Sheen