Patents by Inventor Wei Ming Chang
Wei Ming Chang 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: 11982798Abstract: A projection lens includes a first lens group, a second lens group and an aperture stop. The first lens group is disposed between a reduced side and a magnified side. The second lens is disposed between the first lens group and the magnified side. The second lens group has a light incident surface, a reflective surface and a light emitting surface, the light incident surface faces the first lens group, the light emitting surface faces a projection surface, the light incident surface, the light emitting surface and the first lens group are disposed at a single side of the reflective surface, and at least one of the light incident surface, the reflective surface and the light emitting surface is a freeform surface. The aperture stop is disposed between the first lens group and the second lens group. Moreover, a projection apparatus including the projection lens is also provided.Type: GrantFiled: November 5, 2021Date of Patent: May 14, 2024Assignee: Coretronic CorporationInventors: Hsin-Hsiang Lo, Wei-Ting Wu, Fu-Ming Chuang, Chuan-Chung Chang, Ching-Chuan Wei
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Publication number: 20240151900Abstract: A method for manufacturing a semiconductor device includes: forming a first waveguide structure and a second waveguide structure on a substrate in which the first waveguide structure and the second waveguide structure is spaced apart from each other by a recess; conformally forming an un-doped dielectric layer to cover the first and second waveguide structures and to form a gap between two corresponding portions of the un-doped dielectric layer laterally covering the first waveguide structure and the second waveguide structure, respectively; and forming a doped filling layer to fill the gap.Type: ApplicationFiled: February 22, 2023Publication date: May 9, 2024Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Wei-Li LO, Huan-Chieh CHEN, Yao-Wen CHANG, Chih-Ming CHEN
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Publication number: 20240144467Abstract: A hot spot defect detecting method and a hot spot defect detecting system are provided. In the method, hot spots are extracted from a design of a semiconductor product to define a hot spot map comprising hot spot groups, wherein local patterns in a same context of the design yielding a same image content are defined as a same hot spot group. During runtime, defect images obtained by an inspection tool performing hot scans on a wafer manufactured with the design are acquired and the hot spot map is aligned to each defect image to locate the hot spot groups. The hot spot defects in each defect image are detected by dynamically mapping the hot spot groups located in each defect image to a plurality of threshold regions and respectively performing automatic thresholding on pixel values of the hot spots of each hot spot group in the corresponding threshold region.Type: ApplicationFiled: January 8, 2024Publication date: May 2, 2024Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chien-Huei Chen, Pei-Chao Su, Xiaomeng Chen, Chan-Ming Chang, Shih-Yung Chen, Hung-Yi Chung, Kuang-Shing Chen, Li-Jou Lee, Yung-Cheng Lin, Wei-Chen Wu, Shih-Chang Wang, Chien-An Lin
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Patent number: 11950491Abstract: A semiconductor mixed material comprises an electron donor, a first electron acceptor and a second electron acceptor. The first electron donor is a conjugated polymer. The energy gap of the first electron acceptor is less than 1.4 eV. At least one of the molecular stackability, ?-?*stackability, and crystallinity of the second electron acceptor is smaller than the first electron acceptor. The electron donor system is configured to be a matrix to blend the first electron acceptor and the second electron acceptor. The present invention also provides an organic electronic device including the semiconductor mixed material.Type: GrantFiled: November 17, 2020Date of Patent: April 2, 2024Assignee: RAYNERGY TEK INCORPORATIONInventors: Yi-Ming Chang, Chuang-Yi Liao, Wei-Long Li, Yu-Tang Hsiao, Chun-Chieh Lee, Chia-Hua Li, Huei-Shuan Tan
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Patent number: 11944412Abstract: A blood pressure detection device manufactured by a semiconductor process includes a substrate, a microelectromechanical element, a gas-pressure-sensing element, a driving-chip element, an encapsulation layer and a valve layer. The substrate includes inlet apertures. The microelectromechanical element and the gas-pressure-sensing element are stacked and integrally formed on the substrate. The encapsulation layer is encapsulated and positioned on the substrate. A flowing-channel space is formed above the microelectromechanical element and the gas-pressure-sensing element. The encapsulation layer includes an outlet aperture in communication with an airbag. The driving-chip element controls the microelectromechanical element, the gas-pressure-sensing element and valve units to transport gas.Type: GrantFiled: June 2, 2021Date of Patent: April 2, 2024Assignee: MICROJET TECHNOLOGY CO., LTD.Inventors: Hao-Jan Mou, Ying-Lun Chang, Ching-Sung Lin, Chi-Feng Huang, Yung-Lung Han, Chang-Yen Tsai, Wei-Ming Lee, Chun-Yi Kuo, Tsung-I Lin
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Patent number: 11934065Abstract: A display device includes a substrate, a first light emitting element, a second light emitting element, and an optical film sheet. The first light emitting element and the second light emitting element are disposed on the substrate. The first light emitting element emits a first light, and the first light has a first wavelength range. The second light emitting element emits a second light, and the second light has a second wavelength range. The optical film sheet is disposed above the first light emitting element and the second light emitting element. The optical film sheet includes a first zone and a second zone. The first zone includes a first cholesteric liquid crystal, and the first cholesteric liquid crystal reflects light in at least the first wavelength range. The second zone includes a second cholesteric liquid crystal, and the second cholesteric liquid crystal reflects light in at least the second wavelength range.Type: GrantFiled: June 8, 2023Date of Patent: March 19, 2024Assignee: AUO CorporationInventors: Wan Heng Chang, Min-Hsuan Chiu, Syuan-Ying Lin, Wei-Ming Cheng
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Publication number: 20200056097Abstract: A method of treating drilling mud with oil-based drilling fluid contains: a mud homogenization step configured to homogenize drilling mud which is solidized mud; a 3-phase cyclone separation step in which water vapors are used as a cleaning agent; a petroleum gas oxidation and combustion step in which the petroleum gas is extracted out of the 3-phase separator by using an oil gas oxidation device, and the petroleum gas is thermal oxidized and combusted; a liquid catalyst extraction step executed in which porous substances and hydrocarbon are extracted out of solid waste by using a microbubble extracting and liquid catalyst; a liquid catalyst recycling step having two-stage molecular distillation means so as to recycle the liquid catalyst to the liquid catalyst extraction step and to eliminate the liquid catalyst from recycled base oil. The mud homogenization step is alternatively executed based on physical condition of the drilling mud.Type: ApplicationFiled: August 15, 2018Publication date: February 20, 2020Inventors: Wei Ming CHANG, Cheng Yin CHANG, Jui Ting CHANG
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Patent number: 7998317Abstract: A glycerol preparation method for preparation of medical grade glycerol from a by-product of a bio-diesel process includes a first stage phosphoric acid chemical reaction process and a posterior by-product centrifugal separation process to have the phosphoric acid chemical reaction by-product be separated into free fatty acid, potassium phosphoric acid, and a crude glycerol and methanol mixture. The crude glycerol and methanol mixture is further processed through a first step of thin film evaporation process where methanol is reclaimed, a second step of thin film evaporation process where the mixture is dehydrated, a third step of molecular distillation process where an industrial grade glycerol of purity over 95% is extracted, and a fourth step of molecular distillation process where a medical grade glycerol of purity in exceed of 99.75% that meets USP/BP standards is extracted.Type: GrantFiled: September 5, 2008Date of Patent: August 16, 2011Inventor: Wei Ming Chang
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Publication number: 20100063332Abstract: A glycerol preparation method for preparation of medical grade glycerol from a by-product of a bio-diesel process by means of thin film evaporation and molecular distillation include a first stage phosphoric acid chemical reaction process and a posterior by-product centrifugal separation process to have the phosphoric acid chemical reaction by-product be separated into free fatty acid, potassium phosphoric acid, and a crude glycerol and methanol mixture. The crude glycerol and methanol mixture is further processed through a first step of thin film evaporation process where methanol is reclaimed, a second step of thin film evaporation process where the mixture is dehydrated, a third step of molecular distillation process where an industrial grade glycerol of purity over 95% is extracted, and a fourth step of molecular distillation process where a medical grade glycerol of purity in exceed of 99.75% that meets USP/BP standards is extracted.Type: ApplicationFiled: September 5, 2008Publication date: March 11, 2010Inventor: Wei Ming Chang
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Publication number: 20080072858Abstract: An apparatus for providing fuel saving and low emission heavy fuel oil includes an additive providing unit, a lower emission heavy fuel oil providing unit, a lower emission heavy fuel oil preparation unit, a complementary homogenizer seal cooling unit, a fuel oil supply unit, a main controller, and an emulsifier heavy fuel oil providing unit. With these configurations, the user can directly prepare fuel saving and low emission heavy fuel oil or emulsified heavy fuel oil via operating this apparatus on line.Type: ApplicationFiled: September 22, 2006Publication date: March 27, 2008Inventor: Wei-Ming Chang
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Publication number: 20030196443Abstract: A vapor injecting ice and hot water generating device is disclosed. The Laffer nozzles are used as main working elements. When vapor from the vapor boiler flows through the Laffer nozzle; the suction end of the Laffer nozzle has a negative pressure so as to remove the latent heat of cycling water in the evaporator connected to the suction end. Thereby, the temperature of the water is reduced continuously to a preset value; then the water is sent to the ice water adjusting tank for being used. Another, the vapor passing through the Laffer nozzle enters into the condenser. The condensed water has a temperature lower than that of the vapor flowing down from a top of the condenser for condensing the vapor. The condensed hot water is collected to the cycling condensing water storage tank to be sent to the hot water adjusting tank for being used. By above mentioned structure, power is saved.Type: ApplicationFiled: April 22, 2002Publication date: October 23, 2003Inventor: Wei-Ming Chang