Patents by Inventor Won-joo Lee
Won-joo Lee 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: 11742443Abstract: A nanocrystal including a core including a Group III element and a Group V element, and a monolayer shell on the surface of the core, the shell including a compound of the formula ZnSexS(1-x), wherein 0?x?1, and wherein an average mole ratio of Se:S in the monolayer shell ranges from about 2:1 to about 20:1.Type: GrantFiled: February 9, 2021Date of Patent: August 29, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Shin Ae Jun, Eun Joo Jang, Soo Kyung Kwon, Taek Hoon Kim, Won Joo Lee
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Publication number: 20210167228Abstract: A nanocrystal including a core including a Group III element and a Group V element, and a monolayer shell on the surface of the core, the shell including a compound of the formula ZnSexS(1-x), wherein 0?x?1, and wherein an average mole ratio of Se:S in the monolayer shell ranges from about 2:1 to about 20:1.Type: ApplicationFiled: February 9, 2021Publication date: June 3, 2021Inventors: Shin Ae JUN, Eun Joo JANG, Soo Kyung KWON, Taek Hoon KIM, Won Joo LEE
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Patent number: 10950741Abstract: A nanocrystal including a core including a Group III element and a Group V element, and a monolayer shell on the surface of the core, the shell including a compound of the formula ZnSexS(1-x), wherein 0?x?1, and wherein an average mole ratio of Se:S in the monolayer shell ranges from about 2:1 to about 20:1.Type: GrantFiled: December 28, 2018Date of Patent: March 16, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Shin Ae Jun, Eun Joo Jang, Soo Kyung Kwon, Taek Hoon Kim, Won Joo Lee
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Patent number: 10520262Abstract: A heat exchanger is provided capable of suppressing formation of frost, thereby achieving enhanced heat exchange efficiency refrigerator. The heat exchanger includes refrigerant tubes vertically spaced apart from one another, and heat exchanging fins spaced apart from another in a longitudinal direction of the refrigerant tubes while being coupled to surfaces of the refrigerant tubes. Each heat exchanging fin includes fitting slots formed at one lateral end of the heat exchanging fin and vertically arranged to receive a plurality of refrigerant tubes, and moisture guide valleys extending vertically to downwardly guide moisture on the heat exchanging fin. Each moisture guide valley includes a first moisture guide valley arranged along a virtual line extending through a boundary between a curved portion of the corresponding fitting slot and each straight portion of the fitting slot, and a second moisture guide valley to guide moisture to the first moisture guide valley.Type: GrantFiled: October 29, 2013Date of Patent: December 31, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong Hwa Choi, Gaku Hayase, Young Min Kim, Won Joo Lee
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Publication number: 20190140113Abstract: A nanocrystal including a core including a Group III element and a Group V element, and a monolayer shell on the surface of the core, the shell including a compound of the formula ZnSexS(1-x), wherein 0?x?1, and wherein an average mole ratio of Se:S in the monolayer shell ranges from about 2:1 to about 20:1.Type: ApplicationFiled: December 28, 2018Publication date: May 9, 2019Inventors: Shin Ae JUN, Eun Joo JANG, Soo Kyung KWON, Taek Hoon KIM, Won Joo LEE
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Patent number: 10191326Abstract: A film for a backlight unit including a semiconductor nanocrystal-polymer composite film including a semiconductor nanocrystal and a matrix polymer in which the semiconductor nanocrystal is dispersed, wherein the matrix polymer is a polymer produced by a polymerization of a multifunctional photo-curable oligomer, a mono-functional photo-curable monomer, and a multifunctional photo-curable cross-linking agent, the multifunctional photo-curable oligomer has an acid value of less than or equal to about 0.1 mg of KOH/g, and a content (A1) of a first structural unit derived from the multifunctional photo-curable oligomer, a content (A2) of a second structural unit derived from the mono-functional photo-curable monomer, and a content (A3) of a third structural unit derived from the multifunctional photo-curable cross-linking agent satisfy Equation 1: A1<(A2+A3).Type: GrantFiled: December 1, 2016Date of Patent: January 29, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chul Ho Jung, Hyun A Kang, Soo Kyung Kwon, Won Joo Lee, Eun Joo Jang, Hyo Sook Jang, Shin Ae Jun, Oul Cho, In Taek Han
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Patent number: 10170648Abstract: A nanocrystal including a core including a Group III element and a Group V element, and a monolayer shell on the surface of the core, the shell including a compound of the formula ZnSexS(1-x), wherein 0?x?1, and wherein an average mole ratio of Se:S in the monolayer shell ranges from about 2:1 to about 20:1.Type: GrantFiled: September 27, 2013Date of Patent: January 1, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Shin Ae Jun, Eun Joo Jang, Soo Kyung Kwon, Taek Hoon Kim, Won Joo Lee
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Publication number: 20170082879Abstract: A film for a backlight unit including a semiconductor nanocrystal-polymer composite film including a semiconductor nanocrystal and a matrix polymer in which the semiconductor nanocrystal is dispersed, wherein the matrix polymer is a polymer produced by a polymerization of a multifunctional photo-curable oligomer, a mono-functional photo-curable monomer, and a multifunctional photo-curable cross-linking agent, the multifunctional photo-curable oligomer has an acid value of less than or equal to about 0.1 mg of KOH/g, and a content (A1) of a first structural unit derived from the multifunctional photo-curable oligomer, a content (A2) of a second structural unit derived from the mono-functional photo-curable monomer, and a content (A3) of a third structural unit derived from the multifunctional photo-curable cross-linking agent satisfy Equation 1: A1<(A2+A3).Type: ApplicationFiled: December 1, 2016Publication date: March 23, 2017Inventors: Chul Ho JUNG, Hyun A KANG, Soo Kyung KWON, Won Joo LEE, Eun Joo JANG, Hyo Sook JANG, Shin Ae JUN, Oul CHO, In Taek HAN
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Publication number: 20170018255Abstract: A display panel driving apparatus includes a data processing circuit, a data driver, and a gate driver. The data processing circuit increases a first gamma value of input image data of which the gamma value is 0, according to a second gamma value of the input image data of which the second gamma value is not 0. The data driving part outputs a data signal based on the output image data to a data line. The gate driving part outputs a gate signal to a gate line.Type: ApplicationFiled: January 20, 2016Publication date: January 19, 2017Inventors: YOON-GU KIM, BONG-IM PARK, IK-HYUN AHN, HYUN-SIK HWANG, WON-JOO LEE, JIN-YOUNG LEE
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Patent number: 9523882Abstract: A film for a backlight unit including a semiconductor nanocrystal-polymer composite film including a semiconductor nanocrystal and a matrix polymer in which the semiconductor nanocrystal is dispersed, wherein the matrix polymer is a polymer produced by a polymerization of a multifunctional photo-curable oligomer, a mono-functional photo-curable monomer, and a multifunctional photo-curable cross-linking agent, the multifunctional photo-curable oligomer has an acid value of less than or equal to about 0.1 mg of KOH/g, and a content (A1) of a first structural unit derived from the multifunctional photo-curable oligomer, a content (A2) of a second structural unit derived from the mono-functional photo-curable monomer, and a content (A3) of a third structural unit derived from the multifunctional photo-curable cross-linking agent satisfy Equation 1: A1<(A2+A3).Type: GrantFiled: June 17, 2015Date of Patent: December 20, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chul Ho Jung, Hyun A Kang, Soo Kyung Kwon, Won Joo Lee, Eun Joo Jang, Hyo Sook Jang, Shin Ae Jun, Oul Cho, In Taek Han
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Patent number: 9334440Abstract: A process of synthesizing nanocrystals, the process including contacting a first precursor, a ligand compound, and a second precursor in a solvent having a boiling point of less than or equal to about 150° C. and a polarity index of less than or equal to 5, and performing a thermal decomposition reaction between the first precursor and the second precursor at a higher pressure than atmospheric pressure and at a higher temperature than a boiling point of the solvent, wherein at least one of the first precursor and the second precursor is a metal-containing precursor.Type: GrantFiled: May 29, 2013Date of Patent: May 10, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Eun Joo Jang, Hyo Sook Jang, Won Joo Lee
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Patent number: 9181471Abstract: A light emitting device including: a blue light source; a phosphor; and a semiconductor nanocrystal, and emits white light having a R1-R8 average color rendering index (“CRI”) of greater than or equal to about 90, and a R9 red color rendering index (R9) of greater than or equal to about 90.Type: GrantFiled: October 22, 2013Date of Patent: November 10, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun A Kang, Oul Cho, Eun Joo Jang, Hyo Sook Jang, Shin Ae Jun, Soo Kyung Kwon, Won Joo Lee
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Patent number: 9158149Abstract: A film for a backlight unit including a semiconductor nanocrystal-polymer composite film including a semiconductor nanocrystal and a matrix polymer in which the semiconductor nanocrystal is dispersed, wherein the matrix polymer is a polymer produced by a polymerization of a multifunctional photo-curable oligomer, a mono-functional photo-curable monomer, and a multifunctional photo-curable cross-linking agent, the multifunctional photo-curable oligomer has an acid value of less than or equal to about 0.1 mg of KOH/g, and a content (A1) of a first structural unit derived from the multifunctional photo-curable oligomer, a content (A2) of a second structural unit derived from the mono-functional photo-curable monomer, and a content (A3) of a third structural unit derived from the multifunctional photo-curable cross-linking agent satisfy Equation 1: A1<(A2+A3).Type: GrantFiled: March 15, 2013Date of Patent: October 13, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chul Ho Jung, Hyun A Kang, Soo Kyung Kwon, Won Joo Lee, Eun Joo Jang, Hyo Sook Jang, Shin Ae Jun, Oul Cho, In Taek Han
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Publication number: 20150286094Abstract: A film for a backlight unit including a semiconductor nanocrystal-polymer composite film including a semiconductor nanocrystal and a matrix polymer in which the semiconductor nanocrystal is dispersed, wherein the matrix polymer is a polymer produced by a polymerization of a multifunctional photo-curable oligomer, a mono-functional photo-curable monomer, and a multifunctional photo-curable cross-linking agent, the multifunctional photo-curable oligomer has an acid value of less than or equal to about 0.1 mg of KOH/g, and a content (A1) of a first structural unit derived from the multifunctional photo-curable oligomer, a content (A2) of a second structural unit derived from the mono-functional photo-curable monomer, and a content (A3) of a third structural unit derived from the multifunctional photo-curable cross-linking agent satisfy Equation 1: A1<(A2+A3)??Equation 1.Type: ApplicationFiled: June 17, 2015Publication date: October 8, 2015Inventors: Chul Ho JUNG, Hyun A KANG, Soo Kyung KWON, Won Joo LEE, Eun Joo JANG, Hyo Sook JANG, Shin Ae JUN, Oul CHO, In Taek HAN
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Publication number: 20140158937Abstract: A process of synthesizing nanocrystals, the process including contacting a first precursor, a ligand compound, and a second precursor in a solvent having a boiling point of less than or equal to about 150° C. and a polarity index of less than or equal to 5, and performing a thermal decomposition reaction between the first precursor and the second precursor at a higher pressure than atmospheric pressure and at a higher temperature than a boiling point of the solvent, wherein at least one of the first precursor and the second precursor is a metal-containing precursor.Type: ApplicationFiled: May 29, 2013Publication date: June 12, 2014Inventors: Eun Joo JANG, Hyo Sook JANG, Won Joo LEE
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Publication number: 20140131740Abstract: A light emitting device including: a blue light source; a phosphor; and a semiconductor nanocrystal, and emits white light having a R1-R8 average color rendering index (“CRI”) of greater than or equal to about 90, and a R9 red color rendering index (R9) of greater than or equal to about 90.Type: ApplicationFiled: October 22, 2013Publication date: May 15, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Hyun A. KANG, Oul CHO, Eun Joo JANG, Hyo Sook JANG, Shin Ae JUN, Soo Kyung KWON, Won Joo LEE
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Publication number: 20140117292Abstract: A nanocrystal including a core including a Group III element and a Group V element, and a monolayer shell on the surface of the core, the shell including a compound of the formula ZnSexS(1-x), wherein 0?x?1, and wherein an average mole ratio of Se:S in the monolayer shell ranges from about 2:1 to about 20:1.Type: ApplicationFiled: September 27, 2013Publication date: May 1, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Shin Ae JUN, Eun Joo JANG, Soo Kyung KWON, Taek Hoon KIM, Won Joo LEE
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Publication number: 20140116667Abstract: A heat exchanger is provided capable of suppressing formation of frost, thereby achieving enhanced heat exchange efficiency refrigerator. The heat exchanger includes refrigerant tubes vertically spaced apart from one another, and heat exchanging fins spaced apart from another in a longitudinal direction of the refrigerant tubes while being coupled to surfaces of the refrigerant tubes. Each heat exchanging fin includes fitting slots formed at one lateral end of the heat exchanging fin and vertically arranged to receive a plurality of refrigerant tubes, and moisture guide valleys extending vertically to downwardly guide moisture on the heat exchanging fin. Each moisture guide valley includes a first moisture guide valley arranged along a virtual line extending through a boundary between a curved portion of the corresponding fitting slot and each straight portion of the fitting slot, and a second moisture guide valley to guide moisture to the first moisture guide valley.Type: ApplicationFiled: October 29, 2013Publication date: May 1, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong Hwa CHOI, Gaku HAYASE, Young Min KIM, Won Joo LEE
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Publication number: 20130265522Abstract: A film for a backlight unit including a semiconductor nanocrystal-polymer composite film including a semiconductor nanocrystal and a matrix polymer in which the semiconductor nanocrystal is dispersed, wherein the matrix polymer is a polymer produced by a polymerization of a multifunctional photo-curable oligomer, a mono-functional photo-curable monomer, and a multifunctional photo-curable cross-linking agent, the multifunctional photo-curable oligomer has an acid value of less than or equal to about 0.1 mg of KOH/g, and a content (A1) of a first structural unit derived from the multifunctional photo-curable oligomer, a content (A2) of a second structural unit derived from the mono-functional photo-curable monomer, and a content (A3) of a third structural unit derived from the multifunctional photo-curable cross-linking agent satisfy Equation 1: A1<(A2+A3).Type: ApplicationFiled: March 15, 2013Publication date: October 10, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chul Ho JUNG, Hyun A. KANG, Soo Kyung KWON, Won Joo LEE, Eun Joo JANG, Hyo Sook JANG, Shin Ae JUN, Oul CHO, In Taek HAN
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Publication number: 20080098247Abstract: A computer includes a main body having a housing part, a main display unit connected to the main body which displays images, and an auxiliary display apparatus having an auxiliary display unit which displays additional images, wherein the auxiliary display apparatus is insertable into the housing part.Type: ApplicationFiled: June 13, 2007Publication date: April 24, 2008Applicant: Samsung Electronics Co., Ltd.Inventor: Won-joo LEE