Patents by Inventor Byung-Ik Choi
Byung-Ik Choi 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: 20220340376Abstract: An embodiment of the present invention provides a transfer film that may be used for both a picking process and a placing process of an element, a transfer method using the transfer film, and an electronic product manufactured using the same. Here, the transfer film according to an embodiment of the present invention includes a base part, an adhesion part, and a first protrusion part. The adhesion part is provided on one surface of the base part, and at least part of the first protrusion part is formed and protruded on one surface of the base part to be accommodated inside the adhesion part, and the thickness increases toward the first direction parallel to the surface of the base part.Type: ApplicationFiled: September 3, 2020Publication date: October 27, 2022Inventors: Kwangseop KIM, Chan KIM, Min Ah YOON, Bongkyun JANG, Jae-Hyun KIM, Kyung-Sik KIM, Byung-Ik CHOI
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Patent number: 11465406Abstract: A film transferring method according to an embodiment of the present invention of transferring a film adhered to a substrate to a roller in a state that a first adhesion force between the roller and the film and a second adhesion force between the film and the substrate are substantially the same includes: a transporting step of transporting the substrate and the film of which a first adhesion surface formed on one surface is adhered to the substrate in a first direction; a close contacting step of closely contacting the front end of the second adhesion surface formed on the other surface of the film that is transported with the roller rotating in the first rotation direction; and a transferring step of peeling the film from the substrate and simultaneously transferring it to the roller by peeling the front adhesion surface of the first adhesion surface from the substrate, while simultaneously transferring the front end of the second adhesion surface to the roller and continuously transporting the substrate iType: GrantFiled: October 28, 2019Date of Patent: October 11, 2022Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Bongkyun Jang, Jae-Hyun Kim, Hyun-Sung Park, Seung-Mo Lee, Kwangseop Kim, Byung-iK Choi
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Patent number: 11417546Abstract: An exemplary embodiment of the present invention provides a method of transferring a micro device. The method of transferring the micro device includes: separating a transferring film from a micro device transferred to a target substrate and bending the transferring film upwardly to form a bent circular arc, and pressurizing an upper transferring film fed after the bent circular arc is formed by a pressurizing roller rotating at an upper side of the target substrate.Type: GrantFiled: April 16, 2019Date of Patent: August 16, 2022Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Byung-Ik Choi, Yun Hwangbo, Jae-Hyun Kim, Sung Uk Yoon, Chang Hyun Kim, Jung Yup Kim, Kyung-Sik Kim, Sang Min Kim, Bongkyun Jang, Kwangseop Kim
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Patent number: 11152256Abstract: A carrier film according to an embodiment of the present invention comprises: a base film; and a first adhesive layer formed on a surface of the base film such that an element to be transferred is attached to the first adhesive layer, wherein the magnitude of force of adhesion between the element and the first adhesive layer is in proportion to the depth of press-fitting at which the element is press-fitted into the first adhesive layer.Type: GrantFiled: October 18, 2017Date of Patent: October 19, 2021Assignees: KOREA INSTITUTE OF MACHINERY & MATERIALS, CENTER FOR ADVANCED META-MATERIALSInventors: Yun Hwangbo, Byung-Ik Choi, Jae-Hyun Kim, Hak Joo Lee, Bongkyun Jang, Yeon Woo Jeong, Seong Min Hong
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Publication number: 20210166959Abstract: An exemplary embodiment of the present invention provides a method of transferring a micro device, which is applicable to more various micro devices and is capable of improving transferring efficiency. An exemplary embodiment of the present invention provides a method of transferring a micro device.Type: ApplicationFiled: April 16, 2019Publication date: June 3, 2021Inventors: Byung-Ik CHOI, Yun HWANGBO, Jae-Hyun KIM, Sung Uk YOON, Chang Hyun KIM, Jung Yup KIM, Kyung-Sik KIM, Sang Min KIM, Bongkyun JANG, Kwangseop KIM
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Patent number: 10770426Abstract: A method for transferring a micro device, includes: a compression step in which a carrier film having a micro-device attached to an adhesive layer thereof is brought into contact with a substrate comprising a solder deposited on metal electrodes formed on the substrate and is compressed on the substrate; a first adhesive strength generation step in which the solder disposed between the micro-device and the metal electrodes is compressed in the compression step to generate first adhesive strength between the micro-device and the solder; a second adhesive generation step in which the micro-device is bonded to the adhesive layer through press-fitting in the compression step to generate second adhesive strength between the micro-device and the adhesive layer; and a release step in which the carrier film is separated from the substrate, with the micro-device adhered to the solder.Type: GrantFiled: August 21, 2017Date of Patent: September 8, 2020Assignee: CENTER FOR ADVANCED META-MATERIALSInventors: Yun Hwangbo, Byung Ik Choi, Jae Hyun Kim, Yeon Woo Jeong, Seong Min Hong, Bong Kyun Jang, Kwang Seop Kim, Kyung Sik Kim, Hak Joo Lee
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Patent number: 10632726Abstract: A selective continuous transferring apparatus includes a roll and a sticking layer. The roll has an elastic surface, and contacts a source substrate with a receiving substrate to transfer elements on the source substrate to a lower surface of the receiving substrate 520. A plurality of the elements is arranged on an upper surface of the source substrate. The sticking layer has a predetermined pattern in a partial area of the lower surface of the receiving substrate. The elements are attached to the sticking layer. The roll pressurizes a series of stacked layer of the source substrate, the elements and the receiving substrate, so that the elements disposed corresponding to the sticking layer of the receiving substrate are partially and selectively transferred on the receiving substrate.Type: GrantFiled: July 20, 2016Date of Patent: April 28, 2020Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Bongkyun Jang, Jae-Hyun Kim, Kwang-Seop Kim, Hak-Joo Lee, Byung-Ik Choi
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Publication number: 20200043780Abstract: A carrier film according to an embodiment of the present invention comprises: a base film; and a first adhesive layer formed on a surface of the base film such that an element to be transferred is attached to the first adhesive layer, wherein the magnitude of force of adhesion between the element and the first adhesive layer is in proportion to the depth of press-fitting at which the element is press-fitted into the first adhesive layer.Type: ApplicationFiled: October 18, 2017Publication date: February 6, 2020Inventors: Yun HWANGBO, Byung-Ik CHOI, Jae-Hyun KIM, Hak Joo LEE, Bongkyun JANG, Yeon Woo JEONG, Seong Min HONG
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Publication number: 20190259728Abstract: A method for transferring a micro device, includes: a compression step in which a carrier film having a micro-device attached to an adhesive layer thereof is brought into contact with a substrate comprising a solder deposited on metal electrodes formed on the substrate and is compressed on the substrate; a first adhesive strength generation step in which the solder disposed between the micro-device and the metal electrodes is compressed in the compression step to generate first adhesive strength between the micro-device and the solder; a second adhesive generation step in which the micro-device is bonded to the adhesive layer through press-fitting in the compression step to generate second adhesive strength between the micro-device and the adhesive layer; and a release step in which the carrier film is separated from the substrate, with the micro-device adhered to the solder.Type: ApplicationFiled: August 21, 2017Publication date: August 22, 2019Applicant: CENTER FOR ADVANCED META-MATERIALSInventors: Yun HWANGBO, Byung Ik CHOI, Jae Hyun KIM, Yeon Woo JEONG, Seong Min HONG, Bong Kyun JANG, Kwang Seop KIM, Kyung Sik KIM, Hak Joo LEE
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Patent number: 10132505Abstract: A cooking appliance includes a cooking chamber in which food is accommodated, a machine room separated from the cooking chamber, an exhaust assembly configured to discharge fluids inside the machine room to the outside, and a sensor assembly provided in the machine room and configured to measure the amount of steam of fluids which flow from the cooking chamber to the machine room by driving of the exhaust assembly.Type: GrantFiled: March 17, 2016Date of Patent: November 20, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyung Min Son, Byung Ik Choi, Jun Hoe Choi, Myoung Keun Kwon, Ji-Young Lee, Jeong Su Han
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Publication number: 20180215133Abstract: A selective continuous transferring apparatus includes a roll and a sticking layer. The roll has an elastic surface, and contacts a source substrate with a receiving substrate to transfer elements on the source substrate to a lower surface of the receiving substrate 520. A plurality of the elements is arranged on an upper surface of the source substrate. The sticking layer has a predetermined pattern in a partial area of the lower surface of the receiving substrate. The elements are attached to the sticking layer. The roll pressurizes a series of stacked layer of the source substrate, the elements and the receiving substrate, so that the elements disposed corresponding to the sticking layer of the receiving substrate are partially and selectively transferred on the receiving substrate.Type: ApplicationFiled: July 20, 2016Publication date: August 2, 2018Inventors: Bongkyun JANG, Jae-Hyun KIM, Kwang-Seop KIM, Hak-Joo LEE, Byung-Ik CHOI
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Patent number: 10025323Abstract: An apparatus for detecting an oil level and a method for controlling the same, an apparatus for detecting oil flow and a method for controlling the same, and a method for controlling oil return using the detected oil level and the detected oil flow are disclosed. The level of oil stored in a compressor is measured at two or more positions. The frequency comparison scheme using two electrodes can correctly detect the level of oil stored in the compressor, a refrigerant state, and the level of mixed oils, and can determine an internal state of the compressor and a normal or abnormal state of the oil return system, such that the oil return control can be actively controlled. The flow of oil in the oil return pipe is detected so as to determine whether the oil is normally supplied in real time, such that a malfunction of the compressor is prevented and a valve state can be checked.Type: GrantFiled: August 19, 2015Date of Patent: July 17, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong Hee Jang, Hyo Sang Lee, Hyung Mo Koo, Suk Ho Lee, Byoung Guk Lim, Il Yong Cho, Byung Ik Choi, Jeong Su Han
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Patent number: 9784496Abstract: An air conditioner includes an indoor unit, an outdoor unit including an outdoor fan, a sensor unit mounted at an upper portion of the outdoor unit to sense snow piled up on the outdoor unit, and a control unit to determine whether snow is piled up or not based on an output from the sensor unit and control an operation of the outdoor fan to remove snow when snow is piled up based on the determination. The sensor unit includes a photo sensor and a temperature sensor.Type: GrantFiled: June 11, 2014Date of Patent: October 10, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Byung Ik Choi, Tae Gyoon Noh, Jun Hoe Choi, Ji Hoon Ha, Jeong Su Han, Jong Soo Hong, Hyung Min Son
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Patent number: 9709505Abstract: Disclosed herein are a turbidity sensor and a control method thereof, and more particularly, to a turbidity sensor capable of measuring turbidity of water including a liquid detergent as well as water including a powdered detergent and a control method thereof. The turbidity sensor includes a first light emitting unit emitting visible light, a first light receiving unit disposed opposite to the first light emitting unit at a position spaced apart from the first light emitting unit and receiving visible light emitted from the first light emitting unit, and a control unit determining a turbidity of a solution according to a ratio between the amount of visible light emitted from the first light emitting unit and the amount of visible light received by the first light receiving unit. According to the turbidity sensor and control method thereof, turbidity of the solution by the first and second particles is accurately measured.Type: GrantFiled: April 22, 2013Date of Patent: July 18, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jun Hoe Choi, Byung Ik Choi, Jeong Su Han, Ji Hoon Ha
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Publication number: 20160187173Abstract: An apparatus for detecting an oil level and a method for controlling the same, an apparatus for detecting oil flow and a method for controlling the same, and a method for controlling oil return using the detected oil level and the detected oil flow are disclosed. The level of oil stored in a compressor is measured at two or more positions. The frequency comparison scheme using two electrodes can correctly detect the level of oil stored in the compressor, a refrigerant state, and the level of mixed oils, and can determine an internal state of the compressor and a normal or abnormal state of the oil return system, such that the oil return control can be actively controlled. The flow of oil in the oil return pipe is detected so as to determine whether the oil is normally supplied in real time, such that a malfunction of the compressor is prevented and a valve state can be checked.Type: ApplicationFiled: August 19, 2015Publication date: June 30, 2016Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong Hee JANG, Hyo Sang Lee, Hyung Mo Koo, Suk Ho Lee, Byoung Guk Lim, II Yong Cho, Byung Ik Choi, Jeong Su Han
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Patent number: 9281230Abstract: The present invention relates to an apparatus for massive manufacturing a hierarchical structure that can hierarchically form high performance micro units one a flexible substrate. For this purpose, an apparatus for manufacturing a hierarchical structure according to the present invention is provided to layer micro units provided on a dummy substrate that is made of a hard material on a target substrate that is made of a flexible material by releasing the micro units from the dummy substrate. The apparatus includes: a transfer stage flat-transferring the dummy substrate by supporting the same and a main roller rolling the target substrate by winding the same as the transfer stage proceeds and layering the micro unit of the dummy substrate on the target substrate.Type: GrantFiled: September 28, 2009Date of Patent: March 8, 2016Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Jae-Hyun Kim, Hak-Joo Lee, Seung-Min Hyun, Seung-Woo Han, Byung-Ik Choi
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Publication number: 20150114014Abstract: An air conditioner includes an indoor unit, an outdoor unit including an outdoor fan, a sensor unit mounted at an upper portion of the outdoor unit to sense snow piled up on the outdoor unit, and a control unit to determine whether snow is piled up or not based on an output from the sensor unit and control an operation of the outdoor fan to remove snow when snow is piled up based on the determination. The sensor unit includes a photo sensor and a temperature sensor.Type: ApplicationFiled: June 11, 2014Publication date: April 30, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: BYUNG IK CHOI, TAE GYOON NOH, JUN HOE CHOI, JI HOON HA, JEONG SU HAN, JONG SOO HONG, HYUNG MIN SON
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Patent number: 8568588Abstract: The apparatus for osmotic power generation and desalination using a salinity difference includes: a first osmotic membrane reactor having a first salt water position space and a third salt water position space separated by a first forward osmotic membrane; a second osmotic membrane reactor having a second salt water position space and a draw solution position space separated by a second forward osmotic membrane; a high pressure pump connected between the second salt water position space and the third salt water position space; a desalination unit obtaining fresh water by separating a draw solute from a draw solution diluted through a transmission of water in salt water of the second salt water position space by way of the draw solution position space; and a turbine driven by flow force of salt water discharged from the third salt water position space to produce electric energy.Type: GrantFiled: July 14, 2011Date of Patent: October 29, 2013Assignee: Korea Institute of Machinery & MaterialsInventors: Yu Chang Kim, Sang Jin Park, Young Kim, In-Seob Park, Byung-Ik Choi, Kong Hoon Lee
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Publication number: 20130278921Abstract: Disclosed herein are a turbidity sensor and a control method thereof, and more particularly, to a turbidity sensor capable of measuring turbidity of water including a liquid detergent as well as water including a powdered detergent and a control method thereof. The turbidity sensor includes a first light emitting unit emitting visible light, a first light receiving unit disposed opposite to the first light emitting unit at a position spaced apart from the first light emitting unit and receiving visible light emitted from the first light emitting unit, and a control unit determining a turbidity of a solution according to a ratio between the amount of visible light emitted from the first light emitting unit and the amount of visible light received by the first light receiving unit. According to the turbidity sensor and control method thereof, turbidity of the solution by the first and second particles is accurately measured.Type: ApplicationFiled: April 22, 2013Publication date: October 24, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jun Hoe Choi, Byung Ik Choi, Jeong Su Han
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Patent number: 8551353Abstract: Provided are a shape of a hierarchical structure, an engineering effect of the hierarchical structure according to the shape, an increasing method of the engineering effect, an application method of the hierarchical structure for novel material or parts, and a mass-manufacturing method of the hierarchical structure. The present invention relates to a hierarchical structure and a manufacturing method thereof, and includes a hierarchical structure in which at least one nano-object that has a characteristic length of a nanoscale region in an internal matrix is arranged in a predetermined pattern. According to the exemplary embodiments of the present invention, an excellent characteristic that is generated in a nanoscale region may be used in a structure of a macroscopic scale region, and structures that have different scales may be simply interconnected or interfaced regardless of the different scales.Type: GrantFiled: August 24, 2009Date of Patent: October 8, 2013Assignee: Korea Institute of Machinery & MaterialsInventors: Jae-Hyun Kim, Hak-Joo Lee, Seung-Min Hyun, Hyun-Ju Choi, Byung-Ik Choi, Ki-Don Kim, Dae-Guen Choi