Patents by Inventor Hwa Cheng
Hwa Cheng 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: 20240136316Abstract: A semiconductor package includes a conductive pillar and a solder. The conductive pillar has a first sidewall and a second sidewall opposite to the first sidewall, wherein a height of the first sidewall is greater than a height of the second sidewall. The solder is disposed on and in direct contact with the conductive pillar, wherein the solder is hanging over the first sidewall and the second sidewall of conductive pillar.Type: ApplicationFiled: January 2, 2024Publication date: April 25, 2024Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chiang-Jui Chu, Ching-Wen Hsiao, Hao-Chun Liu, Ming-Da Cheng, Young-Hwa Wu, Tao-Sheng Chang
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Patent number: 11955960Abstract: The invention uses the control circuit formed on the silicon wafer to detect the leakage current of transistor formed on the depletion mode GaN wafer and then adjust the gate voltage of the depletion mode GaN transistor according to the detected leakage current. Essentially, the gate voltage is reduced or viewed as made more negative when the detected leakage current is larger a specific value. Thus, the gate voltage can be gradually adjusted to approach a specific threshold voltage that right block the leakage current. In other words, by making the gate voltage more negative when non-zero leakage current is detected and even by making the gate voltage more positive when zero leakage current is detected, the depletion mode GaN transistor can be adjusted to have an acceptable or even zero leakage current, a high reaction rate and an optimized efficiency.Type: GrantFiled: August 23, 2022Date of Patent: April 9, 2024Assignee: CHIP-GAN POWER SEMICONDUCTOR CORPORATIONInventors: Ke-Horng Chen, Tzu-Hsien Yang, Yong-Hwa Wen, Kuo-Lin Cheng
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Publication number: 20240072790Abstract: The invention uses the control circuit formed on the silicon wafer to detect the leakage current of transistor formed on the depletion mode GaN wafer and then adjust the gate voltage of the depletion mode GaN transistor according to the detected leakage current. Essentially, the gate voltage is reduced or viewed as made more negative when the detected leakage current is larger a specific value. Thus, the gate voltage can be gradually adjusted to approach a specific threshold voltage that right block the leakage current. In other words, by making the gate voltage more negative when non-zero leakage current is detected and even by making the gate voltage more positive when zero leakage current is detected, the depletion mode GaN transistor can be adjusted to have an acceptable or even zero leakage current, a high reaction rate and an optimized efficiency.Type: ApplicationFiled: August 23, 2022Publication date: February 29, 2024Inventors: KE-HORNG CHEN, TZU-HSIEN YANG, YONG-HWA WEN, KUO-LIN CHENG
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Publication number: 20160347265Abstract: An interchangeable cover for at least a portion of a vehicle interior lining component comprising a molded base having an interior contour corresponding to an exterior shape of the component to be covered, a plurality of fixing means for mounting the cover over the component, and a facing sheet attached to an exterior surface of the base.Type: ApplicationFiled: August 12, 2016Publication date: December 1, 2016Inventors: HWA CHENG TEOH, CHEE KENG SAM, CHEN XIANG WONG
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Publication number: 20160317755Abstract: A safety syringe includes a barrel including a hollow cylindrical tip; a needle assembly including a hollow needle hub on the tip; a hinge including a bifurcated base and a moveable bifurcation on the needle hub, the movable bifurcation having two relaxation length of hinge ends pivotably secured to the base, a wall member formed with the bifurcation, and a V-shaped resilient member having two ends hingedly secured to the bifurcation and the base respectively; and a needle protection housing including a grooved body and a latch releasably secured to the wall member. When the needle protection housing is pivoted about both the resilient member and the hinge ends, resilient energy is stored in the resilient member. When the resilient energy reaches a set value, the resilient member releases the resilient energy to pivot the needle protection housing toward a hypodermic needle until the hypodermic needle is lockingly concealed in the grooved body.Type: ApplicationFiled: July 31, 2015Publication date: November 3, 2016Inventors: Hsien-Tsung WANG, Wan-Hwa CHENG
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Publication number: 20160207432Abstract: A vehicle seat cover arrangement comprising a vehicle seat having an outer surface, an interchangeable vehicle seat cover having an inner surface integrally made from a plush-like material with a loops-like structure, and a sheet-like attachment means having a hooks-like surface and attached on to the outer surface of the vehicle seat, wherein the seat cover is closely fitted on to the vehicle seat by engagement between the loops-like structure and the hooks-like surface.Type: ApplicationFiled: March 31, 2016Publication date: July 21, 2016Inventors: Hwa Cheng Teoh, Chee Keng Sam, Chen Xiang Wong
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Patent number: 9322593Abstract: An umbrella draining assembly mainly includes a cylindrical containing cistern body, a flinging device disposed in an inner section of the containing cistern body, and a bearing plate disposed at a bottom edge of the containing cistern body. A positioning component is disposed in the containing cistern body. The flinging device includes an embedding section, at an inner edge thereof is disposed a plurality of tapering serrated segments. A transmission component is disposed at a bottom edge of the embedding section. When the umbrella draining assembly is in use, a top shaft of an umbrella is inserted into the embedding section, with the positioning component fixing the position of the umbrella. The transmission component drives the embedding section to rotate quickly, causing rainwater on the umbrella to be flung outward due to centrifugal force and to fall on the bearing plate at a bottom edge of the containing cistern body.Type: GrantFiled: June 16, 2014Date of Patent: April 26, 2016Inventor: Li-Hwa Cheng
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Publication number: 20150362252Abstract: An umbrella draining assembly mainly includes a cylindrical containing cistern body, a flinging device disposed in an inner section of the containing cistern body, and a bearing plate disposed at a bottom edge of the containing cistern body. A positioning component is disposed in the containing cistern body. The flinging device includes an embedding section, at an inner edge thereof is disposed a plurality of tapering serrated segments. A transmission component is disposed at a bottom edge of the embedding section. When the umbrella draining assembly is in use, a top shaft of an umbrella is inserted into the embedding section, with the positioning component fixing the position of the umbrella. The transmission component drives the embedding section to rotate quickly, causing rainwater on the umbrella to be flung outward due to centrifugal force and to fall on the bearing plate at a bottom edge of the containing cistern body.Type: ApplicationFiled: June 16, 2014Publication date: December 17, 2015Inventor: LI-HWA CHENG
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Patent number: 9184520Abstract: An electrical connector includes a base and an elastic terminal. The base has a recess. The elastic terminal is connected to the base and extends to the recess. The elastic terminal has a fixed end and a free end, the fixed end is connected to the base, and the free end is located at the recess and is curved. When the contact moves towards the recess, the contact is capable of pushing the contact protrusion to bend towards the bottom of the recess so that the free end leans against the bottom of the recess. The electrical connector may further include a contact protrusion connected to the elastic terminal. When the contact moves towards the recess, the contact is capable of pushing the contact protrusion to make the elastic terminal bend towards the bottom portion of the recess so that the free end leans against the bottom of the recess.Type: GrantFiled: April 16, 2014Date of Patent: November 10, 2015Assignee: Unimicron Technology Corp.Inventors: Chih-Peng Fan, Yin-Hwa Cheng, Ching-Ho Hsieh, Ling-Kai Su, Yung-Hao Hsueh
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Publication number: 20140335705Abstract: An electrical connector includes a base an elastic terminal and an elastic terminal. The base has a recess. The elastic terminal is connected to the base and extends to the recess. When the contact moves towards the recess, the contact is capable of pushing the contact protrusion to bend towards the bottom of the recess. In addition, the electrical connector may further include a contact protrusion connected to the elastic terminal. When the contact moves towards the recess, the contact is capable of pushing the contact protrusion to make the elastic terminal bend towards the bottom portion of the recess.Type: ApplicationFiled: July 3, 2013Publication date: November 13, 2014Inventors: Chih-Peng Fan, Yin-Hwa Cheng, Ching-Ho Hsieh, Ling-Kai Su, Yung-Hao Hsueh
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Publication number: 20140335706Abstract: An electrical connector includes a base and an elastic terminal. The base has a recess. The elastic terminal is connected to the base and extends to the recess. The elastic terminal has a fixed end and a free end, the fixed end is connected to the base, and the free end is located at the recess and is curved. When the contact moves towards the recess, the contact is capable of pushing the contact protrusion to bend towards the bottom of the recess so that the free end leans against the bottom of the recess. The electrical connector may further include a contact protrusion connected to the elastic terminal. When the contact moves towards the recess, the contact is capable of pushing the contact protrusion to make the elastic terminal bend towards the bottom portion of the recess so that the free end leans against the bottom of the recess.Type: ApplicationFiled: April 16, 2014Publication date: November 13, 2014Applicant: Unimicron Technology Corp.Inventors: Chih-Peng Fan, Yin-Hwa Cheng, Ching-Ho Hsieh, Ling-Kai Su, Yung-Hao Hsueh
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Publication number: 20140054914Abstract: An interchangeable vehicle interior lining (100) comprising a moulded base (102) with an inner and an outer surface, prepared for an vehicle interior part (105) onto which the lining (100) is to be assembled; an adhesive (103) applied onto the outer surface of the moulded base (102); a desired decorative material (101) adhered onto the adhesive outer surface of the moulded base (102); and a plurality of fixing means (107) mounted along the periphery of the lining (100) for closely fitting the lining (100) onto the vehicle interior part (105).Type: ApplicationFiled: August 15, 2011Publication date: February 27, 2014Applicant: PECCA LEATHER SDN BHDInventors: Hwa Cheng Teoh, Chee Keng Sam, Chen Xiang Wong
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Publication number: 20120001464Abstract: A method for attaching a vehicle seat cover (102a, 102b) onto an original cover of a vehicle seat (101) comprising a step of applying a detachable fixing means (105a, 105b, 105c) onto the outer surface (110) of the original cover of the vehicle seat (101) or the inner surface (107) of the vehicle seat cover (102a, 102b) or both at appropriate location and fixing the inner surface (107) of the vehicle seat cover (102a, 102b) closely onto the outer surface (110) of the original cover of the vehicle seat (101) such that the vehicle seat cover (102a, 102b) closely conforms to the contours of the vehicle seat (101).Type: ApplicationFiled: May 26, 2009Publication date: January 5, 2012Inventors: Hwa Cheng Teoh, Wah Leong Teoh
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Patent number: 7608332Abstract: A cathode material particle comprising a plurality of cathode material cores and each cathode material core having plurality of grains and each grain being uniformly covered with a nano-metal oxide layer, wherein a thickness of the nano-metal oxide layer is 1 nm to 100 nm. The cathode material has excellent safety (good thermal stability), high-capacity, good cycleability and high-rate charging or discharging capability.Type: GrantFiled: October 10, 2008Date of Patent: October 27, 2009Assignee: Industrial Technology Research InstituteInventors: Mao-Huang Liu, Jin-Ming Chen, Tzu-Hwa Cheng
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Publication number: 20090050859Abstract: A cathode material particle comprising a plurality of cathode material cores and each cathode material core having plurality of grains and each grain being uniformly covered with a nano-metal oxide layer, wherein a thickness of the nano-metal oxide layer is 1 nm to 100 nm. The cathode material has excellent safety (good thermal stability), high-capacity, good cycleability and-high-rate charging or discharging capability.Type: ApplicationFiled: October 10, 2008Publication date: February 26, 2009Applicant: Industrial Technology Research InstituteInventors: Mao-Huang Liu, Jin-Ming Chen, Tzu-Hwa Cheng
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Publication number: 20080299392Abstract: Cathode material particles with nano-metal oxide layers on the surface, each cathode material particle includes a cathode material core and a nano-metal oxide layer surrounding the cathode material core. The thickness of the nano-metal oxide layer is of 10 nm to 100 nm. The cathode material has excellent safety, high-capacity, good cycleability and high-rate charging or discharging capability. A method for manufacturing the cathode material particles comprises soaking the cathode material cores in a surface improving agent containing metal salt, drying the surface improving agent to deposit the metal salt on the cores and sintering the cores with lithium hydroxide to form the nano-metal oxide layer on the surface around the core. Thereby, the cathode material particles are formed.Type: ApplicationFiled: June 14, 2004Publication date: December 4, 2008Inventors: Mao-Huang Liu, Jin-Ming Chen, Tzu-Hwa Cheng
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Publication number: 20050145553Abstract: A chemical supply system is provided. The present system provides a first system including a first tank for storing a chemical liquid therein and a first filter connecting with the first tank by a first tube and a second tube. A third tube connects the first system with a second system. The second system includes a second tank and a second filter connecting with the second tank by a fourth tube and a fifth tube. A first vent tube connects with the first tank. A second vent tube connects with the second filter.Type: ApplicationFiled: January 6, 2004Publication date: July 7, 2005Inventor: Cheng-Hwa Cheng
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Patent number: 6057559Abstract: A laser diode for emitting a coherent beam of light in the blue and/or green portions of the spectrum. The laser diode includes a plurality of layers of II-VI semiconductor forming a pn junction, including at least a first light-guiding layer. A short-period strained-layer superlattice (SPSLS) CdZnSe quantum well active layer is positioned within the pn junction. The layers of II-VI semiconductor are supported by a substrate. First and second electrodes on opposite sides of the layers of II-VI semiconductor couple electrical energy to the laser diode.Type: GrantFiled: January 31, 1995Date of Patent: May 2, 2000Assignee: 3M Innovative Properties CompanyInventors: Hwa Cheng, James M. DePuydt, Michael A. Haase, Jun Qiu
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Patent number: 5698168Abstract: A unibody, monolithic, one-piece PBN plasma chamber for an MBE gas plasma source. The chamber has a cylindrical configuration with at least one effusion orifice and a gas inlet opening. The gas inlet opening is preferably communicatively connected to an elongated, tubular inlet member. The inlet member is preferably coupled to a liquid cooled gas source by an intermediary connection member which is preferably constructed of a refxactory metal. The chamber minimizes leakage and maximizes efficiency. A gas plasma source assembly and a method for making the chamber are also disclosed.Type: GrantFiled: November 1, 1995Date of Patent: December 16, 1997Assignee: Chorus CorporationInventors: Scott W. Priddy, Hwa Cheng
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Patent number: 5574296Abstract: An electromagnetic radiation transducer is provided having a p-type ZnSe layer and an n-type layer. The p-type ZnSe layer has a net donor to net acceptor ratio (N.sub.D /N.sub.A) of less than or equal to about 0.8. The net acceptor concentration is greater than about 5.times.10.sup.15 cm .sup.-3 and the resistivity is less than 15 .OMEGA.-cm. The p-type ZnSe layer is deposited by doping the ZnSe during fabrication with a neutral free-radical source.Type: GrantFiled: July 21, 1993Date of Patent: November 12, 1996Assignee: Minnesota Mining And Manufacturing CompanyInventors: Robert M. Park, James M. DePuydt, Hwa Cheng, Michael A. Haase