Patents by Inventor Tae-hee Yoon
Tae-hee 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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Patent number: 11963376Abstract: A light emitting device includes: a first electrode and a second electrode facing each other, an emissive layer disposed between the first electrode and the second electrode and including a quantum dot, an electron auxiliary layer disposed between the emissive layer and the second electrode and including a plurality of nanoparticles, and a polymer layer between a portion of the second electrode and the electron auxiliary layer, wherein the nanoparticles include a metal oxide including zinc, wherein the second electrode has a first surface facing a surface of the electron auxiliary layer and a second surface opposite to the first surface, and the polymer layer is disposed on a portion of the second surface and a portion of the surface of the electron auxiliary layer, and wherein the polymer layer includes a polymerization product of a thiol compound and an unsaturated compound having at least two carbon-carbon unsaturated bonds.Type: GrantFiled: September 14, 2022Date of Patent: April 16, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae Ho Kim, Won Sik Yoon, Jeong Hee Lee, Eun Joo Jang, Oul Cho
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Patent number: 11963443Abstract: The present disclosure relates to an OLED that includes a first electrode; a second electrode facing the first electrode; a first emitting material layer including a first host, a second host and a blue dopant and positioned between the first and second electrodes; a first electron blocking layer including an electron blocking material of a spirofluorene-substituted amine derivative and positioned between the first electrode and the first emitting material layer; and a first hole blocking layer including a first hole blocking material of an azine derivative and positioned between the second electrode and the first emitting material layer, wherein the first host is an anthracene derivative, and the second host is a deuterated anthracene derivative.Type: GrantFiled: December 21, 2019Date of Patent: April 16, 2024Assignee: LG Display Co., Ltd.Inventors: In Bum Song, Seung Hee Yoon, Gwi Jeong Cho, So Yeon Ahn, Yoo Yi Son, Tae Shick Kim
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Publication number: 20240121543Abstract: An electronic device according to various embodiments of the present invention may comprise: a housing comprising a first surface facing in a first direction and a second surface facing in a second direction that is opposite to the first direction, the first surface comprising an at least partially transparent part and at least one opening formed adjacent to the at least partially transparent part; a camera positioned inside the housing, the camera comprising an image sensor facing in the first direction through the at least partially transparent part of the housing; and an acoustic component arranged between the first surface and the second surface, the acoustic component comprising a vibration plate configured to generate a sound such that the same moves in at least one direction selected from the first and second directions, a first passage formed in a third direction that is substantially perpendicular to the first direction such that the generated sound passes through the same, and a second passage formeType: ApplicationFiled: November 13, 2023Publication date: April 11, 2024Inventors: Young-Bae PARK, Byoung-Hee LEE, Jae-Hee YOU, Tae-Eon KIM, Han-Bom PARK, Sun-Young LEE, Byoung-Uk YOON, Kyung-Hee LEE, Ho-Chul HWANG
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Publication number: 20240114778Abstract: The present disclosure relates to an organic electroluminescent compound, a plurality of host materials, and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure or by comprising a specific combination of compounds according to the present disclosure as a plurality of host materials, it is possible to produce an organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.Type: ApplicationFiled: August 14, 2023Publication date: April 4, 2024Inventors: So-Young JUNG, Hyo-Nim SHIN, Seung-Hyun YOON, Hyun-Ju KANG, Ye-Jin JEON, Tae-Jun HAN, Mi-Ja LEE, Dong-Gil KIM, Sang-Hee CHO
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Patent number: 11949445Abstract: A protective case configured to cover a portable electronic device is provided. The protective case may include a first card storage configured to receive a first card, and a second card storage configured to store a second card where the second card storage is spaced apart from the first card storage.Type: GrantFiled: August 31, 2022Date of Patent: April 2, 2024Assignee: SPIGEN KOREA CO., LTD.Inventors: Young Hee Kwon, Gang Il Park, Tae Sung Yoon, Tae Heon Kim
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Patent number: 11925044Abstract: A light emitting device includes: a first electrode and a second electrode facing each other, an emissive layer disposed between the first electrode and the second electrode and including a quantum dot, an electron auxiliary layer disposed between the emissive layer and the second electrode and including a plurality of nanoparticles, and a polymer layer between a portion of the second electrode and the electron auxiliary layer, wherein the nanoparticles include a metal oxide including zinc, wherein the second electrode has a first surface facing a surface of the electron auxiliary layer and a second surface opposite to the first surface, and the polymer layer is disposed on a portion of the second surface and a portion of the surface of the electron auxiliary layer, and wherein the polymer layer includes a polymerization product of a thiol compound and an unsaturated compound having at least two carbon-carbon unsaturated bonds.Type: GrantFiled: September 14, 2022Date of Patent: March 5, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae Ho Kim, Won Sik Yoon, Jeong Hee Lee, Eun Joo Jang, Oul Cho
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Publication number: 20230412972Abstract: A display device includes a display panel including a substrate including a first side extending in a first direction and a second side extending in a second direction intersecting the first direction, and a light emitting element layer positioned on a first surface of the substrate, a first vibrating element disposed on a second surface of the substrate and that vibrates the display panel to output a first sound, a first buffer layer disposed on the second surface of the substrate and disposed between the first side and the first vibrating element, and a second buffer layer disposed on the second surface of the substrate and disposed between the second side and the first vibrating element. The first buffer layer includes a first pore, and the second buffer layer includes a second pore.Type: ApplicationFiled: March 29, 2023Publication date: December 21, 2023Applicant: Samsung Display Co., LTD.Inventors: Hidekazu HAYASHI, Kyoung Ho PARK, Hyun Su PARK, Ki Cheol SONG, Taek Sun SHIN, Tae Hee YOON, Gyu Su LEE
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Patent number: 7374846Abstract: The present invention relates to a non-magnetic monocomponent color toner composition and a method for preparing the same, and more particularly to a non-magnetic monocomponent color toner composition having a narrow charge distribution, good charging characteristics, good environmental independence, superior image characteristics, high transfer efficiency and long-term stability caused by significantly improved charge maintenance capability, and a method for preparing the same. The non-magnetic monocomponent color toner composition of the present invention is prepared by coating organic particles having an average particle size of 0.3 to 2.0 ?m, organic particles having an average particle size of 0.05 to 0.25 ?m, and silica on toner mother particles.Type: GrantFiled: October 21, 2005Date of Patent: May 20, 2008Assignee: LG Chem, Ltd.Inventors: Hyeung-Jin Lee, Tae-Hee Yoon, Joo-Yong Park, Chang-Soon Lee
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Publication number: 20070269730Abstract: The present invention relates to a polymerized toner with high chargeability and good charge-stability, and a method of preparing the polymerized toner. In particular, the present invention relates to a polymerized toner containing pigments, pigment stabilizers, charge control agents and binder resin monomers, and a method to prepare the polymerized toner by suspension polymerization of pigments, pigment stabilizers, charge control agents and binder resin monomers, wherein the pigment stabilizer is a styrene-butadiene-styrene block copolymer having the weight-average molecular weight of 2,000 to 200,000, and the charge control agent is a copolymer with sulfonate group having the weight-average molecular weight of 2,000 to 200,000.Type: ApplicationFiled: March 7, 2006Publication date: November 22, 2007Applicant: LG CHEM, LTD.Inventors: Woong-Ki Lee, Chang-Soon Lee, Tae-Hee Yoon, Woo-Cheul Jung
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Patent number: 7282312Abstract: The present invention relates to a toner having a double- or triple-layered structure. The present invention is effective in that pigments and charge control agents are located most properly for the realization of high-resolution toners through addition and polymerization of hydrophilic monomers or polymers with the toners; the manufacture of high-resolution toners becomes very easy irrespective to the kind and amount of a wax used for polymerized toners by forming thin layers by using polar grafting agents; and long-term preservation is assured as well as the affect by moisture is minimized.Type: GrantFiled: April 8, 2004Date of Patent: October 16, 2007Assignee: LG Chem, Ltd.Inventors: Woo-cheul Jung, Woong-ki Lee, Tae-hee Yoon
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Publication number: 20070020544Abstract: The present invention relates to a non-magnetic monocomponent color toner composition and a method for preparing the same, and more particularly to a non-magnetic monocomponent color toner composition having a narrow charge distribution, good charging characteristics, good environmental independence, superior image characteristics, high transfer efficiency and long-term stability caused by significantly improved charge maintenance capability, and a method for preparing the same. The non-magnetic monocomponent color toner composition of the present invention is prepared by coating organic particles having an average particle size of 0.3 to 2.0 ?m, organic particles having an average particle size of 0.05 to 0.25 ?m, and silica on toner mother particles.Type: ApplicationFiled: October 21, 2005Publication date: January 25, 2007Inventors: Hyeung-Jin Lee, Tae-Hee Yoon, Joo-Yong Park, Chang-Soon Lee
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Publication number: 20060099530Abstract: The present invention relates to a polymerized toner prepared by suspension polymerization. Provided is a method for preparing a toner comprising the steps of (1) preparing a toner by suspension polymerization using a water-based dispersant that adjusts size of emulsion particles, which are formed as byproduct, to 0.05-2 ?m; and (2) removing the dispersant from the toner surface, refining the toner, so that concentration of the emulsion particles becomes 0.01-2 wt % of the toner, and filtering and drying the toner in vacuum. Also provided is a toner prepared by suspension polymerization using a water-based dispersant, concentration of emulsion particles being 0.01-2% and diameter of the emulsion particles being 0.05-2 ?m. The present invention provides a good toner having fusing property and developing property by effectively controlling the concentration of emulsion particles formed during suspension polymerization as byproduct.Type: ApplicationFiled: November 8, 2005Publication date: May 11, 2006Inventors: Woong-ki Lee, Chang-soon Lee, Tae-hee Yoon, Woo-cheul Jeong
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Publication number: 20050255400Abstract: The present invention relates to a toner having a double- or triple-layered structure. The present invention is effective in that pigments and charge control agents are located most properly for the realization of high-resolution toners through addition and polymerization of hydrophilic monomers or polymers with the toners; the manufacture of high-resolution toners becomes very easy irrespective Lo the kind and amount of a wax used for polymerized toners by forming thin layers by using polar grafting agents; and long-term preservation is assured as well as the affect by moisture is minimized.Type: ApplicationFiled: April 8, 2004Publication date: November 17, 2005Inventors: Woo-cheul Jung, Woong-ki Lee, Tae-hee Yoon
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Publication number: 20050031978Abstract: The present invention relates to a non-magnetic monocomponent color toner composition and a method for preparing the same, and more particularly to a non-magnetic monocomponent color toner composition having a narrow charge distribution, good charging characteristics, good environmental independence, superior image characteristics, high transfer efficiency and long-term stability caused by significantly improved charge maintenance capability, and a method for preparing the same. The non-magnetic mono-component color toner composition of the present invention is prepared by coating organic particles having an average particle size of 0.3 to 2.0 ?m organic particles having an average particle size of 0.05 to 0.25 ?m, and silica on toner mother particles.Type: ApplicationFiled: April 9, 2003Publication date: February 10, 2005Inventors: Hyeung-Jin Lee, Tae-Hee Yoon, Joo-Yong Park, Chang-Soon Lee