Patents by Inventor Chang-Jin Kim
Chang-Jin Kim 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: 11912443Abstract: The present invention relates to a film wrapping machine for a product packing device using a stretch film, including a frame having vertical bars extending upward and spaced apart from each other, a film clamping unit including a pair of suction pads which are moved in a direction of being spaced apart from each other in a state of adsorbing the stretch film so that a front end portion of the stretch film supplied from a film supply device is opened, and a plurality of clamps configured to grip the front end portion of the stretch film opened by the suction pads, receive the stretch film whose upper end is cut and bonded by the film supply device in a wrinkled state, and process the stretch film to be covered on a product in a process of lowering the vertical bars, and a controller which controls operation of the film clamping unit and the film supply device.Type: GrantFiled: April 13, 2022Date of Patent: February 27, 2024Assignee: YULWON ENGINEERING CO., LTD.Inventors: Chang-Sik Mun, Young-Woo Park, Sung-Jin Kim
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Publication number: 20240018980Abstract: A microstructured surface with microfeatures formed thereon and defining spaces between the microfeatures includes least one electrode of an electrode pair in the spaces, wherein electrodes of the pair are electrically connected to one another. The at least one electrode located in the space is configured to generate a gas in between the microfeatures when an electrolyte solution penetrates into the microfeatures. Importantly, the electrodes are not connected to any external power source. Because the microstructured surface is self-powered in replenishing the gas lost in a submerged condition, no additional provision to supply energy or regulate the replenishment is necessary for implementation and use.Type: ApplicationFiled: July 21, 2023Publication date: January 18, 2024Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Muchen Xu, Chang-Jin Kim
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Publication number: 20230302489Abstract: Various examples are related to template-free methodologies to obtain “semi-regular” micro/nano-textures utilizing ribbing instability behavior in viscoelastic polymers. The methodologies offer low manufacturing cost and scalability for real-world applications. In one example, a method includes forming a viscoelastic material coating and forming micro-scale and/or nano-scale 3D features on a surface of the viscoelastic material coating. The micro-scale and/or nano-scale 3D features can be formed under shearing stress using a roll-to-roll process without a template. The texture periodicity and height in the polymer coat film can be adjusted through the roll coating process parameters and/or the polymer composite behavior.Type: ApplicationFiled: March 23, 2023Publication date: September 28, 2023Inventors: Jong Eun Ryu, Chang-Jin Kim, Mohammed A. Zikry
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Publication number: 20230028219Abstract: A die bonding method includes obtaining information about a quality grade of each die of a plurality of dies placed at a wafer, picking up a first die among the plurality of dies from the wafer, identifying a bonding location of a plurality of bonding locations from a substrate according to a quality grade of the first die, and bonding the first die to the bonding location of the substrate.Type: ApplicationFiled: July 14, 2022Publication date: January 26, 2023Applicant: SEMES CO., LTD.Inventor: Chang Jin KIM
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Patent number: 11325127Abstract: A method of fluid manipulation involves applying electric signals at one or more electrodes located on or adjacent to a surface in contact with a liquid that contains a surfactant. The electric field generated by the electric signals (e.g., biasing voltage) applied to the electrodes makes the liquid less wetting on the surface than the natural state and can be used to move or modify the shape of the liquid droplet placed on the surface. One embodiment makes a liquid dewet locally on a surface by applying electric signals locally on the surface so that the liquid can be electrically manipulated on a hydrophilic surface.Type: GrantFiled: January 19, 2017Date of Patent: May 10, 2022Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Chang-Jin Kim, Jia Li
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Publication number: 20220139739Abstract: An apparatus for transferring dies in bonding equipment includes an ejector configured to push up a die attached to a dicing tape, an ejector controller controlling the ejector to move up or move down, a gas passage disposed in the ejector and forming a gas channel for applying vacuum pressure or pneumatic pressure, a gas stream controller controlling the vacuum pressure or the pneumatic pressure through the gas passage, a tape suction unit disposed outside the ejector and suctioning the dicing tape using vacuum pressure, a picker suctioning and transferring the die from above, and a picker controller moving-up and moving down the picker.Type: ApplicationFiled: November 2, 2021Publication date: May 5, 2022Applicant: SEMES CO., LTD.Inventor: Chang Jin KIM
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Patent number: 10986983Abstract: A stereo-imaging device that operates by translating a single lens in front of an exposed imaging sensor, or translating one of the objective lens group for higher image quality. The device and method is used as a surgical instrument guide. An objective lens with a translating lens part can directly attached in front of a camera with an exposed sensor or an endoscopic circuit with an exposed imaging fiber bundle surface to capture/record the image shift generated by the lens translation. The stereo-imaging device can realize a camera which can swing back and forth from regular 2D image capturing mode to the stereo mode to capture images for 3D viewing, or a switchable stereo endoscope without size increases of multiple imaging systems to be used for periodical 3D inspections.Type: GrantFiled: February 8, 2019Date of Patent: April 27, 2021Assignees: The Regents of the University of California, Optech Ventures, LLCInventors: Wook Choi, Vladimir Rubtsov, Chang-Jin Kim, Gennady Sigal
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Patent number: 10927005Abstract: A method of making microstructures having re-entrant or doubly re-entrant topology includes forming a mold defining the negative surface features of the re-entrant or doubly re-entrant topology that is to be formed. In one embodiment, a soft or flowable material is formed on a first substrate and the mold is contacted with the same to form a solid, now positive surface having the re-entrant or doubly re-entrant topology. The mold is then released from the first substrate. The microstructures are secured to a second, different substrate, and the first substrate is removed. Any residual microstructure material located between adjacent microstructures may be removed to form the separate microstructures on the second substrate. The second substrate may be thin and flexible any manipulated into useful or desired shapes having the microstructures on one side thereof.Type: GrantFiled: January 21, 2016Date of Patent: February 23, 2021Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Muchen Xu, Chang-Jin Kim
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Publication number: 20210020483Abstract: A die pickup method is disclosed. The die pickup method is used to pick up dies from a wafer that includes a first array in which a plurality of dies having a length and a width is arranged in a width direction, and a second array in which a plurality of dies is arranged parallel to the first array and having a number of dies greater than that of the first array. The die pickup method includes sequentially picking up dies of the first array in a first width direction from a first die located at a first end of the first array toward a second die located at a second end of the first array, detecting a third die of the second array adjacent to the second die, and detecting a fourth die located at a second end of the second array in the first width direction.Type: ApplicationFiled: July 16, 2020Publication date: January 21, 2021Applicant: SEMES CO., LTD.Inventors: Byoung Ho JUNG, Chang Jin KIM, Eung Seok KIM
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Publication number: 20200298238Abstract: A method of fluid manipulation involves applying electric signals at one or more electrodes located on or adjacent to a surface in contact with a liquid that contains a surfactant. The electric field generated by the electric signals (e.g., biasing voltage) applied to the electrodes makes the liquid less wetting on the surface than the natural state and can be used to move or modify the shape of the liquid droplet placed on the surface. One embodiment makes a liquid dewet locally on a surface by applying electric signals locally on the surface so that the liquid can be electrically manipulated on a hydrophilic surface.Type: ApplicationFiled: January 19, 2017Publication date: September 24, 2020Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Chang-Jin Kim, Jia Li
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Patent number: 10739994Abstract: An electronic device includes a processor, a touch sensor, and a touch controller including a register. The processor writes, into the register, data associated with a partial area of the touch sensor specified to sense an effective touch. When the effective touch is sensed in the partial area of the touch sensor, the touch controller writes data associated with the effective touch into the register, and the processor reads the data associated with the effective touch from the register when the data associated with the effective touch is written in the register.Type: GrantFiled: June 3, 2019Date of Patent: August 11, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Chang Jin Kim, Man Sung Kim, Jong Kon Bae, Kwang Tai Kim, Min Uk Kim, Dong Hyun Yeom, Kyoung Taek Lee, Hoon Do Heo
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Patent number: 10566617Abstract: Disclosed is a microbattery having a substrate with a surface that includes an array of posts extending from the surface of the substrate to form a first electrode. An selectively-cured electrolyte forms a conformal coating over the surface of the substrate and the array of posts to provide a coated electrode. A second electrode substantially encases the coated electrode.Type: GrantFiled: March 2, 2016Date of Patent: February 18, 2020Assignee: The Regents of the University of CaliforniaInventors: Janet Hur, Leland Smith, Bruce S. Dunn, Chang-Jin Kim
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Publication number: 20190354226Abstract: Disclosed is an electronic device. The electronic device according to an embodiment may include a display including a touch sensor, a fingerprint sensor formed in at least a partial area of the display, a processor and a control circuit that controls the touch sensor. The control circuit may detect an input related to an external object through the at least a partial area while the processor is in a low power state, determine whether the external object is an input related to the fingerprint sensor, when the external object is not an input related to the fingerprint sensor, discard the input of the external object, and when the external object is an input related to the fingerprint sensor, emit light through a display area at least including the at least partial area in the low power state. In addition, various embodiments understood through the disclosure may be possible.Type: ApplicationFiled: January 31, 2018Publication date: November 21, 2019Inventors: Jung Hoon CHOI, Chang Jin KIM, Man Sung KIM
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Publication number: 20190286321Abstract: An electronic device includes a processor, a touch sensor, and a touch controller including a register. The processor writes, into the register, data associated with a partial area of the touch sensor specified to sense an effective touch. When the effective touch is sensed in the partial area of the touch sensor, the touch controller writes data associated with the effective touch into the register, and the processor reads the data associated with the effective touch from the register when the data associated with the effective touch is written in the register.Type: ApplicationFiled: June 3, 2019Publication date: September 19, 2019Inventors: Chang Jin KIM, Man Sung KIM, Jong Kon BAE, Kwang Tai KIM, Min Uk KIM, Dong Hyun YEOM, Kyoung Taek LEE, Hoon Do HEO
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Patent number: 10391530Abstract: An artificial surface is disclosed where super-repellency is obtained solely from surface roughness regardless of the material's intrinsic wettability. The surface is able to repel all known liquids. The surface contains thereon a plurality of microstructures having a doubly re-entrant topology and a liquid-solid contact fraction of less than 50%. In one embodiment, the doubly re-entrant topology includes a cap portion and downwardly extending lip extending from the periphery of the cap portion. The surface withstands high temperatures and resists surface changing phenomenon such as biofouling and chemical scaling.Type: GrantFiled: September 26, 2014Date of Patent: August 27, 2019Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Chang-Jin Kim, Tingyi Liu
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Patent number: 10310733Abstract: An electronic device includes a processor, a touch sensor, and a touch controller including a register. The processor writes, into the register, data associated with a partial area of the touch sensor specified to sense an effective touch. When the effective touch is sensed in the partial area of the touch sensor, the touch controller writes data associated with the effective touch into the register, and the processor reads the data associated with the effective touch from the register when the data associated with the effective touch is written in the register.Type: GrantFiled: August 1, 2017Date of Patent: June 4, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Chang Jin Kim, Man Sung Kim, Jong Kon Bae, Kwang Tai Kim, Min Uk Kim, Dong Hyun Yeom, Kyoung Taek Lee, Hoon Do Heo
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Patent number: 10292620Abstract: A stereo-imaging device that operates by translating a single lens in front of an exposed imaging sensor, or translating one of the objective lens group for higher image quality. The device and method is used as a surgical instrument guide. An objective lens with a translating lens part can directly attached in front of a camera with an exposed sensor or an endoscopic circuit with an exposed imaging fiber bundle surface to capture/record the image shift generated by the lens translation. The stereo-imaging device can realize a camera which can swing back and forth from regular 2D image capturing mode to the stereo mode to capture images for 3D viewing, or a switchable stereo endoscope without size increases of multiple imaging systems to be used for periodical 3D inspections.Type: GrantFiled: January 9, 2013Date of Patent: May 21, 2019Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, OPTECH VENTURES, LLCInventors: Wook Choi, Vladimir Rubtsov, Chang-Jin Kim, Gennady Sigal
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Patent number: 10268302Abstract: A method and apparatus for recognizing a user's grip state using a Touch Screen Panel (TSP) sensor in an electronic device are provided. The method for recognizing the user's grip state in the electronic device includes the processes of detecting a hovering input generated by a user's grip through a self-capacitive or mutual-capacitive touch screen, and determining the user's grip state in accordance with the detected hovering input.Type: GrantFiled: August 13, 2014Date of Patent: April 23, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Jung-Tae Kwon, Dong-Sub Kim, Byeong-Jae Kim, Chang-Jin Kim
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Patent number: 10125271Abstract: A superhydrophobic surface includes a plurality of microfeatures disposed on a substrate and a gas generator disposed within the microfeatures, the gas generator configured to generate a gas within the microfeatures. Gas is generated within the microfeatures when at least a portion of the microfeatures is in a wetted state to restore the microfeatures to a dewetted state. Gas generation is self-regulating in that gas generation automatically starts when a wetted condition exists and stops when sufficient gas has been generated to recover a dewetted state that restores superhydrophobicity.Type: GrantFiled: March 29, 2016Date of Patent: November 13, 2018Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Chang-Jin Kim, Choongyeop Lee
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Publication number: 20180320717Abstract: A microstructured surface with microfeatures formed thereon and defining spaces between the microfeatures includes least one electrode of an electrode pair in the spaces, wherein electrodes of the pair are electrically connected to one another. The at least one electrode located in the space is configured to generate a gas in between the microfeatures when an electrolyte solution penetrates into the microfeatures. Importantly, the electrodes are not connected to any external power source. Because the microstructured surface is self-powered in replenishing the gas lost in a submerged condition, no additional provision to supply energy or regulate the replenishment is necessary for implementation and use.Type: ApplicationFiled: July 16, 2015Publication date: November 8, 2018Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Muchen Xu, Chang-Jin Kim