Patents by Inventor Su-Jin Yoon
Su-Jin Yoon 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: 20240155885Abstract: Provided is a display device. A display device includes a display area and a buffer area disposed around the display area, a pixel electrode disposed on a substrate and in the display area, a bank covering an edge of the pixel electrode, light emitting elements disposed on the pixel electrode and extending in a thickness direction of the substrate, and a buffer disposed on the substrate and in the buffer area. The bank and the buffer are disposed on a same layer.Type: ApplicationFiled: July 25, 2023Publication date: May 9, 2024Applicant: Samsung Display Co., LTD.Inventors: Jung Hun NOH, Su Jin LEE, Bon Yong KOO, Ki Seong SEO, Ju Won YOON
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Publication number: 20240116135Abstract: An apparatus for manufacturing a secondary battery includes: an index table configured to receive a secondary battery cell, the secondary battery cell including an electrode assembly, a can accommodating the electrode assembly, and an electrode tab between the electrode assembly and the can to electrically connect the electrode assembly to the can; a laser scanner configured to irradiate laser onto an outer surface of the can to weld the electrode tab to the can; and a controller configured to variably control the laser scanner according to an operation of the index table.Type: ApplicationFiled: August 18, 2023Publication date: April 11, 2024Inventors: Yong Gyu AN, Tae Jin YOON, Su Sang CHO, Seong Bae AN, Sang Hyun RYU, Jae Hoon ROH, Myung Jun PARK
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Publication number: 20240090326Abstract: The present disclosure relates to an organic compound having the following structure, and an organic light emitting diode (OLED) and an organic light emitting device including the organic compound. The organic compound can be a bipolar compound having a p-type moiety and an n-type moiety and has high energy level and proper energy bandgap for an emissive layer of the OLED. As the organic compound is applied into the emissive layer, the OLED can maximize its luminous properties as holes and electrons are recombined uniformly over the whole area in an emitting material layer (EML).Type: ApplicationFiled: September 26, 2023Publication date: March 14, 2024Applicants: LG DISPLAY CO., LTD, KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATIONInventors: Kyung-Jin YOON, Dae-Wi YOON, Ji-Ae LEE, Su-Na CHOI, Dong-Hoon CHOI, Min-Ju CHO, JiWon YOON
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Patent number: 11699831Abstract: A separator which includes: a porous polymer substrate having a plurality of pores; a separator base including a porous coating layer formed on at least one surface of the porous polymer substrate; and an adhesive layer formed on at least one surface of the separator base, said adhesive layer comprising a plurality of second inorganic particles and adhesive resin particles, wherein the weight ratio of the second inorganic particles to the adhesive resin particles is 5:95-60:40, and the diameter of the adhesive resin particles is 1.1-3.5 times the diameter of the second inorganic particles. An electrochemical device including the separator is also disclosed. The separator shows improved adhesion between an electrode and the separator, maintains the pores of the adhesive layer even after a process of electrode lamination, and improves the resistance of an electrochemical device.Type: GrantFiled: August 23, 2022Date of Patent: July 11, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin Kwon, In-Hyouk Sung, Myeong-Soo Kim, Su-Jin Yoon
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Publication number: 20230122483Abstract: A separator and an electrochemical device including the same. The separator includes an adhesive layer including first adhesive resin particles having an average particle diameter corresponding to 0.8-3 times of an average particle diameter of the inorganic particles and second adhesive resin particles having an average particle diameter corresponding to 0.2-0.6 times of the average particle diameter of the inorganic particles, wherein the first adhesive resin particles are present in an amount of 30-90 wt % based on a total weight of the first adhesive resin particles and the second adhesive resin particles. The separator shows improved adhesion to an electrode and provides an electrochemical device with decreased increment in resistance after lamination with an electrode.Type: ApplicationFiled: December 20, 2022Publication date: April 20, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin KWON, Myeong-Soo Kim, In-Hyouk Sung, Su-Jin Yoon, Je-An Lee
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Patent number: 11575179Abstract: A separator and an electrochemical device including the same. The separator includes an adhesive layer including first adhesive resin particles having an average particle diameter corresponding to 0.8-3 times of an average particle diameter of the inorganic particles and second adhesive resin particles having an average particle diameter corresponding to 0.2-0.6 times of the average particle diameter of the inorganic particles, wherein the first adhesive resin particles are present in an amount of 30-90 wt % based on a total weight of the first adhesive resin particles and the second adhesive resin particles. The separator shows improved adhesion to an electrode and provides an electrochemical device with decreased increment in resistance after lamination with an electrode.Type: GrantFiled: August 2, 2019Date of Patent: February 7, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin Kwon, Myeong-Soo Kim, In-Hyouk Sung, Su-Jin Yoon, Je-An Lee
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Publication number: 20220407184Abstract: A separator which includes: a porous polymer substrate having a plurality of pores; a separator base including a porous coating layer formed on at least one surface of the porous polymer substrate; and an adhesive layer formed on at least one surface of the separator base, said adhesive layer comprising a plurality of second inorganic particles and adhesive resin particles, wherein the weight ratio of the second inorganic particles to the adhesive resin particles is 5:95-60:40, and the diameter of the adhesive resin particles is 1.1-3.5 times the diameter of the second inorganic particles. An electrochemical device including the separator is also disclosed. The separator shows improved adhesion between an electrode and the separator, maintains the pores of the adhesive layer even after a process of electrode lamination, and improves the resistance of an electrochemical device.Type: ApplicationFiled: August 23, 2022Publication date: December 22, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin KWON, In-Hyouk SUNG, Myeong-Soo KIM, Su-Jin YOON
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Publication number: 20220407181Abstract: A method for manufacturing a separator for an electrochemical device which uses polyvinyl pyrrolidone (PVP) as a dispersing agent, and provides high dispersibility of particles and prevents aggregation of particles, even when inorganic particles having a small particle diameter is used in slurry for forming a porous coating layer. Therefore, the inorganic particles are distributed homogeneously in the porous coating layer of a finished separator. In addition, since PVP is used with a fluorinated binder resin, the separator shows improved peel strength and adhesion to an electrode. Further, a non-solvent ingredient for the fluorinated binder resin is used as a solvent for PVP, and a non-solvent ingredient for PVP is used as a solvent for the fluorinated binder resin.Type: ApplicationFiled: November 17, 2020Publication date: December 22, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Jin-Woo HEO, Hye-Jin KWON, Su-Jin YOON
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Patent number: 11495866Abstract: A separator is provided which includes: a separator base including a porous polymer substrate having a plurality of pores, and a porous coating layer positioned on at least one surface of the porous polymer substrate and containing a plurality of inorganic particles and a binder polymer positioned on the whole or a part of the surface of the inorganic particles to connect the inorganic particles with one another and fix them; and a porous adhesive layer positioned on at least one surface of the separator base and including polyvinylidene fluoride-co-hexafluoropropylene containing vinylidene fluoride-derived repeating units and hexafluoropropylene-derived repeating units, wherein the ratio of the number of the hexafluoropropylene (HFP)-derived repeating units (HFP substitution ratio) based on the total number of the vinylidene fluoride-derived repeating units and the hexafluoropropylene-derived repeating units is 4.5% to 9%. An electrochemical device including the separator is also provided.Type: GrantFiled: July 26, 2019Date of Patent: November 8, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Chan-Jong Kim, Su-Jin Yoon
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Patent number: 11489232Abstract: A method for manufacturing a separator, including the steps of: (S1) preparing a pre-dispersion including inorganic particles dispersed in a pre-dispersion solvent and a first binder polymer dissolved in the pre-dispersion solvent; (S2) conducting a preliminary milling of the pre-dispersion; (S3) preparing a binder polymer solution including a second binder polymer dissolved in a binder polymer solution solvent; (S4) mixing the pre-dispersion with the binder polymer solution and carrying out a secondary milling to obtain a slurry for forming a porous coating layer; and (S5) applying the slurry to at least one surface of a porous polymer substrate, followed by drying, is disclosed. A separator obtained by the method and an electrochemical device including the same are also disclosed. According to the present disclosure, it is possible to provide a separator having a uniform surface and showing improved adhesion.Type: GrantFiled: December 21, 2018Date of Patent: November 1, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin Kwon, Myeong-Soo Kim, Su-Jin Yoon, Je-An Lee
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Patent number: 11469476Abstract: A separator which includes: a porous polymer substrate having a plurality of pores; a separator base including a porous coating layer formed on at least one surface of the porous polymer substrate; and an adhesive layer formed on at least one surface of the separator base, said adhesive layer comprising a plurality of second inorganic particles and adhesive resin particles, wherein the weight ratio of the second inorganic particles to the adhesive resin particles is 5:95-60:40, and the diameter of the adhesive resin particles is 1.1-3.5 times the diameter of the second inorganic particles. An electrochemical device including the separator is also disclosed. The separator shows improved adhesion between an electrode and the separator, maintains the pores of the adhesive layer even after a process of electrode lamination, and improves the resistance of an electrochemical device.Type: GrantFiled: October 18, 2018Date of Patent: October 11, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin Kwon, In-Hyouk Sung, Myeong-Soo Kim, Su-Jin Yoon
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Patent number: 11450921Abstract: A method for manufacturing a separator, including the steps of: (S1) preparing a dispersion containing inorganic particles dispersed in a first solvent and a first binder polymer dissolved in the first solvent; (S2) preparing a binder polymer solution containing a second binder polymer dissolved in a second solvent, and mixing the binder polymer solution with the dispersion so that a combined weight of the inorganic particles and the first binder polymer in the dispersion may be 1.5-8 times of a weight of the second binder polymer in the binder polymer solution; and (S3) applying the resultant mixture to at least one surface of a porous polymer substrate, followed by drying, to form a porous coating layer on the porous polymer substrate. Also, a separator obtained by the method and an electrochemical device including the same.Type: GrantFiled: November 23, 2018Date of Patent: September 20, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin Kwon, Su-Jin Yoon, Myeong-Soo Kim, Je-An Lee
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Publication number: 20220285791Abstract: A separator for a secondary battery, including: a porous polymer substrate having a plurality of pores; and a porous coating layer on at least one surface of the porous polymer substrate, the porous coating layer including a plurality of inorganic particles, a binder polymer and a urethane bond-containing crosslinked polymer. The binder polymer and the urethane bond-containing crosslinked polymer are on at least a part of the surface of the inorganic particles to connect and fix the inorganic particles with one another. The urethane bond-containing crosslinked polymer has a weight average molecular weight of 100,000-5,000,000, and the urethane bond-containing crosslinked polymer is present in an amount of 6 parts by weight to 60 parts by weight based on 100 parts by weight of the total weight of the binder polymer and the urethane bond-containing crosslinked polymer.Type: ApplicationFiled: July 6, 2020Publication date: September 8, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin KWON, Su-Jin YOON, Jong-Heon KWAK, Jeong-Ae YOON
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Patent number: 11424511Abstract: Disclosed is an electrode assembly including two electrodes having polarities opposite to each other, and a separator interposed between the two electrodes, wherein the separator includes: a separator base which includes a porous polymer substrate having a plurality of pores, and a porous coating layer; and an adhesive layer formed on at least one surface of the separator base, provided to face either of the electrodes and containing an adhesive resin, and wherein the adhesion (Peel Strength) between the porous polymer substrate and the porous coating layer and the adhesion (Lami Strength) between the adhesive layer and the electrode satisfy Mathematical Formula 1. An electrochemical device including the separator is also disclosed. In the electrode assembly, the separator shows increased resistance against scratching and the adhesion between the separator and the electrode can be improved.Type: GrantFiled: October 18, 2018Date of Patent: August 23, 2022Assignee: LG Energy Solution, Ltd.Inventors: Chan-Jong Kim, Myeong-Soo Kim, In-Hyouk Sung, Su-Jin Yoon, Sang-Joon Lee
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Publication number: 20220220294Abstract: A binder resin composition comprising polyvinyl pyrrolidone-polyvinyl acetate block copolymer (PVP-co-PVAc). When introducing the binder resin composition to the porous coating layer of a separator for an electrochemical device, there an effect of significantly improving binding characteristics and heat resistance/safety.Type: ApplicationFiled: April 29, 2020Publication date: July 14, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Myeong-Soo KIM, Su-Jin YOON
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Patent number: 11349177Abstract: A separator for secondary batteries, including: a separator substrate having at least one surface, wherein the separator substrate includes a polyolefin-based polymer resin having a porous structure and a coating layer is applied to one surface or opposite surfaces of a separator substrate made of a polyolefin-based polymer resin having a porous structure, wherein the coating layer includes a thickener, a filler, a particle-type binder, and a dissolution-type binder, wherein the thickener comprises carboxymethyl cellulose, and wherein an amount of the particle-type binder is greater than an amount of the dissolution-type binder.Type: GrantFiled: December 21, 2018Date of Patent: May 31, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: In Hyouk Sung, Su Jin Yoon, Sang Joon Lee, Hye Jin Kwon
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Publication number: 20220149480Abstract: A separator for an electrochemical device. The separator includes a porous coating layer formed from an acid, which is crosslinkable. As a result, the separator has increased heat resistance, safety and physical strength, shows improved peel strength between the porous substrate and the porous coating layer, and prevents separation of the inorganic particles from the porous coating layer. In addition, the separator shows an improved crosslinking degree so that the added amount of a crosslinkable binder resin may be reduced. Thus, it is possible to increase the added amount of a non-crosslinkable resin, inorganic particles, or both. Even when using a small amount of a crosslinkable binder resin, it is possible to provide both an effect of improving heat resistance and an effect of improving adhesion.Type: ApplicationFiled: March 20, 2020Publication date: May 12, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin KWON, Myeong-Soo KIM, Su-Jin YOON
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Patent number: 11283134Abstract: A method for preparing a separator, a separator prepared using the same, and an electrochemical device including the same. More specifically, stability of the separator may be reinforced by preparing the separator using a slurry prepared by pre-dispersing an inorganic material and a dispersion resin, and then mixing a binder thereto when preparing the separator.Type: GrantFiled: January 18, 2018Date of Patent: March 22, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hyejin Kwon, Houngsik Yoo, Su Jin Yoon, Dong Hyun Kim, Hyeon Choi, Jean Lee
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Patent number: 11258135Abstract: A functional binder and a separator including the functional binder, in which the separator includes a porous polyolefin substrate and an organic-inorganic hybrid porous coating layer formed on at least one surface of the substrate and configured to include a mixture of inorganic particles and a binder compound, thus increasing binder-inorganic material adhesion and substrate-binder adhesion while preventing internal shorting from occurring by performing self-healing of damage to the separator, enhancing the adhesion of the separator to a cathode and an anode, and withstanding the dissolution of a transition metal of a cathode material. The binder contains 10 wt % or more of a hydroxyl group per molecule thereof.Type: GrantFiled: January 5, 2018Date of Patent: February 22, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Kwan Woo Nam, Su Jin Yoon, Hye Jin Kwon, Chan Jong Kim, Je An Lee
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Publication number: 20220006156Abstract: A separator for an electrochemical device and an electrochemical device comprising the same. The separator comprises a porous polymer substrate and a heat resistant coating layer on at least one surface of the porous polymer substrate. The heat resistant coating layer is a porous polymer layer having pores, and comprises a polyvinyl pyrrolidone-based polymer and a polyvinylidene fluoride (PVDF)-based polymer.Type: ApplicationFiled: April 29, 2020Publication date: January 6, 2022Applicant: LG CHEM, LTD.Inventors: Myeong-Soo KIM, Hye-Jin KWON, Su-Jin YOON