Patents Assigned to Dongwoo Fine-Chem
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Patent number: 11976223Abstract: An adhesive composition according to an embodiment includes an acrylic copolymer, and a compound containing a sulfide group and having a refractive index of 1.57 or more. The adhesive sheet prepared from the adhesive composition may have a low glass transition temperature and high refractive index, such that an image display device may not include a separate high refractive index pattern layer.Type: GrantFiled: November 1, 2022Date of Patent: May 7, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Kyoung Moon Jung, Hye Rim Kwon, Geon Shin, In Oh Hwang
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Patent number: 11973265Abstract: An antenna device according to an embodiment of the present disclosure includes a dielectric layer, a first electrode layer disposed on an upper surface of the dielectric layer, the first electrode layer including a radiator and having a first mesh structure, and a second electrode layer disposed on a lower surface of the dielectric layer, the second electrode layer having a second mesh structure. The first mesh structure and the second mesh structure are aligned to be offset or staggered from each other with respect to the dielectric layer in a planar view.Type: GrantFiled: October 4, 2021Date of Patent: April 30, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Han Sub Ryu, Dong Pil Park, Yun Seok Oh
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Publication number: 20240128304Abstract: A method for manufacturing an LED lighting device includes forming a separation film on a substrate, patterning the separation film, forming LEDs on the separation film, bonding a stretch film to top surfaces of the LEDs and spacing between the LEDs, separating the separation film from the substrate, stretching the stretch film, exposing the top surfaces of the LEDs, and forming electrodes on the top surfaces of the LEDs, and a bottom surface of the separation film or bottom surfaces of the LEDs.Type: ApplicationFiled: February 24, 2022Publication date: April 18, 2024Applicant: DONGWOO FINE-CHEM CO., LTD.Inventors: Byoungin KIM, Dong Ki KEUM, Jin LEE
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Patent number: 11958953Abstract: A hard coating film may include a substrate and a hard coating layer provided on at least one surface of the substrate, in which, when the hard coating film is folded and unfolded 200,000 times with a bending radius of 1 mm in the direction in which the hard coating layer is oriented inwards under 60° C. and 90% relative humidity (RH), breakage does not occur, and the amount of change in transmission b* (chromaticity) of the film after UV irradiation for 100 hr using a 15 W UV-B lamp is 1.5 or less. The hard coating film may exhibit superior anti-curling properties, superior bending resistance under high-temperature and high-humidity conditions, and high light resistance, and can thus be applied not only to an image display device but also to a window for a flexible display device.Type: GrantFiled: May 27, 2019Date of Patent: April 16, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Geo San Lim, Seung Hee Kim, Hye Lin Kim
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Patent number: 11960687Abstract: A manufacturing method of a touch panel includes steps of sequentially forming a metal layer and a blackening layer on a base layer in a multi-chamber, patterning the metal layer and the blackening layer in a mesh pattern, and etching the metal layer and the blackening layer to form a metal mesh electrode with the blackening layer formed.Type: GrantFiled: December 30, 2021Date of Patent: April 16, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Sung Jin Noh, Ki Joon Park, Jungu Lee
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Patent number: 11955432Abstract: An antenna structure according to an embodiment of the present disclosure includes a passivation layer, an antenna unit at least partially embedded in an upper portion of the passivation layer, and an insulating layer disposed on a top surface of the passivation layer to cover the antenna unit. A spatial efficiency of the antenna structure is improved and a thickness of the image display device is reduced to improve a bending property.Type: GrantFiled: December 17, 2021Date of Patent: April 9, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Yoon Ho Huh, Young Ju Kim, Young Su Lee
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Patent number: 11955689Abstract: An antenna-inserted electrode structure according to an embodiment includes a substrate layer comprising a touch sensing area and a touch sensing-antenna area, sensing electrodes disposed on the touch sensing area and the touch sensing-antenna area of the substrate layer, and an antenna unit disposed on the touch sensing-antenna area of the substrate layer, the antenna unit including a radiator. The sensing electrodes and the radiator include a hybrid mesh structure, and the hybrid mesh structure includes a first mesh structure and a second mesh structure integrally combined with each other. The first mesh structure and the second mesh structure have different shapes and arrangements from each other.Type: GrantFiled: August 12, 2022Date of Patent: April 9, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Byoung In Kim, Chang Jun Maeng, Yoon Ho Huh
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Patent number: 11955693Abstract: An antenna package according to an embodiment of the present disclosure includes a first antenna device including a first antenna unit, a first circuit board electrically connected to the first antenna unit, a second circuit board electrically connected to the first circuit board, a second antenna unit integrated with the second circuit board, and an antenna driving integrated circuit chip mounted on the second circuit board and electrically connected to the first antenna unit and the second antenna unit. Multi-axial radiation is implemented using the antenna package with high efficiency and reliability.Type: GrantFiled: January 6, 2022Date of Patent: April 9, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Byung Jin Choi, Na Yeon Kim, Han Sub Ryu, Dong Pil Park
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Patent number: 11955709Abstract: An antenna package according to an embodiment of the present disclosure includes an antenna device including an antenna unit, a first circuit board including a first core layer having a first surface and a second surface opposite to each other, a signal wiring extending on the first surface of the first core layer to be electrically connected to the antenna unit, and a first via structure penetrating through the first core layer, and a first connector mounted on the second surface of the first core layer, the first connector including a first terminal electrically connected to the antenna unit and the first via structure.Type: GrantFiled: July 12, 2022Date of Patent: April 9, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Na Yeon Kim, Young Ju Kim, Yoon Ho Huh
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Patent number: 11955704Abstract: An antenna device according to an embodiment of the present invention includes a dielectric layer, an antenna unit disposed on a top surface of the dielectric layer, the antenna unit including a radiator and a transmission line connected to the radiator, a dummy electrode separated from the antenna unit on the top surface of the dielectric layer, the dummy electrode at least partially surrounding the antenna unit, and a blocking pattern arranged around the antenna unit in the dummy electrode. Radiation interruption from the dummy electrode is prevented by the blocking pattern to improve radiation reliability.Type: GrantFiled: October 4, 2021Date of Patent: April 9, 2024Assignees: DONGWOO FINE-CHEM CO., LTD., POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATIONInventors: Yoon Ho Huh, Jong Min Kim, Han Sub Ryu, Won Bin Hong
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Patent number: 11955697Abstract: An antenna device according to an embodiment of the present invention includes a dielectric layer, a radiator and a dummy electrode. The radiator is disposed on the upper surface of the dielectric layer. The radiator includes a first mesh structure, and the first mesh structure includes a first antenna electrode line and a second antenna electrode line which cross each other. The dummy electrode is spaced apart from the radiator by the separation region on the upper surface of the dielectric layer. The dummy electrode includes a second mesh structure, and the second mesh structure includes a first dummy electrode line and a second dummy electrode line which cross each other. A spacing distance between the first dummy electrode line and the radiator is different from a spacing distance between the second dummy electrode line and the radiator at the separation region.Type: GrantFiled: October 13, 2021Date of Patent: April 9, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Young Jun Lee, Han Sub Ryu, Gi Hwan Ahn
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Publication number: 20240111082Abstract: Provided are a polarizing plate for antireflection including a polarizer, and a protective layer formed on at least one surface of the polarizer, wherein the polarizing plate has a single transmittance of 44.6% or more and a degree of polarization of 98% or more and satisfies 0?[(orthogonal a*)2+(orthogonal b*)2]0.5?16, and a display device including the polarizing plate. The polarizing plate for antireflection can exhibit high transmittance while preventing blue-shift phenomenon and having neutral reflection color. Further, the polarizing plate for antireflection can be made thinner.Type: ApplicationFiled: December 6, 2023Publication date: April 4, 2024Applicant: DONGWOO FINE-CHEM CO., LTD.Inventors: Dongduk CHOI, Jihoon KONG, Ji Hoon KIM
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Patent number: 11941221Abstract: A touch sensor includes a sensing part in which a plurality of sensing cells is arranged and connected and a wiring part connected to the sensing part and formed outside the sensing part. The wiring part includes a first divisional wiring part having a plurality of first divisional wires having a connecting protrusion with a width larger than that of the wiring at one end thereof and a second divisional wiring part having a plurality of second divisional wires having one end thereof with a width smaller than that of the connecting protrusion and coupled to and overlapped with the connecting protrusion. The first divisional wiring part and the second divisional wiring part are formed by divisional exposure.Type: GrantFiled: August 4, 2021Date of Patent: March 26, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Dongjin Son, Junha Kim
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Patent number: 11928272Abstract: A composite panel includes a substrate-less touch sensor panel and a first coupling member coupled to one surface of the touch sensor panel via a first adhesive layer.Type: GrantFiled: June 30, 2021Date of Patent: March 12, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Dohyoung Kwon, Duckkyeom Kim, Ji-yeon Kim, Cheol Hun Lee, Ki Deok Lee
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Patent number: 11912910Abstract: A conductive film laminate according to an embodiment of the present disclosure includes a carrier substrate, a conductive film liner on the carrier substrate, and a conductive adhesive film formed on the conductive film liner. The conductive film liner and the conductive adhesive film may form a cut pattern which does not cover the entire carrier substrate. The conductive adhesive film having a narrow width can be stably supplied on the carrier substrate. The conductive adhesive film may be used as an anisotropic conductive film for a bonding process of a touch sensor.Type: GrantFiled: March 25, 2021Date of Patent: February 27, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Hyuk Hwan Kwon, Sun Kwon Ahn, Chang Yong Lee
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Publication number: 20240059852Abstract: A window laminate includes a base layer and a functional layer formed on the base layer, in which at least one side end of the functional layer forms an identical line with a corresponding side end of the base layer. The identical line of the side ends of the base layer and the functional layer forms a cut vertical plane.Type: ApplicationFiled: December 21, 2021Publication date: February 22, 2024Applicant: DONGWOO FINE-CHEM CO., LTD.Inventors: Duckkyeom KIM, Beomcheol KIM, Jeongmin CHOI, Hee Yong LEE
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Patent number: 11870150Abstract: An antenna package according to an exemplary embodiment of the present invention includes a first antenna device which includes a first antenna unit including a first radiator, a second antenna device which includes a second antenna unit including a second radiator whose polarization direction is perpendicular to the first radiator, a first circuit board electrically connected with the first antenna unit, a second circuit board electrically connected with the second antenna unit, and a third circuit board on which at least one antenna driving integrated circuit (IC) chip electrically and independently connected to the first circuit board and the second circuit board is mounted. By supplying power to two antenna devices having different polarization directions, respectively, signal interference and signal loss may be prevented, and dual polarization may be implemented.Type: GrantFiled: October 22, 2021Date of Patent: January 9, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Young Ju Kim, Dong Pil Park, Byung Jin Choi, Han Sub Ryu, Ho Dong Yoon
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Patent number: 11870141Abstract: An antenna package according to an embodiment of the present disclosure includes an antenna device including an antenna unit, and a flexible circuit board electrically connected to the antenna unit. The flexible circuit board includes a core layer having a first surface and a second surface that face each other, a circuit wiring layer disposed on the first surface of the core layer and including a signal wiring electrically connected to the antenna unit, and a ground layer disposed on the second surface of the core layer to cover the circuit wiring layer in a planar view. The ground layer partially includes a mesh structure.Type: GrantFiled: December 8, 2021Date of Patent: January 9, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Jong Min Kim, Chang Jun Maeng, Gi Taek Oh
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Patent number: 11870129Abstract: An antenna element according to an exemplary embodiment includes a radiation body, a first transmission line extending from the radiation body in a first direction, a second transmission line extending from the radiation body in a second direction, a first signal pad extending from an end of the first transmission line in the first direction, and a second signal pad extending from an end of the second transmission line in the second direction.Type: GrantFiled: February 9, 2022Date of Patent: January 9, 2024Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Byung Jin Choi, Han Sub Ryu, Won Hee Lee, Jae Hyun Lee
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Publication number: 20230407508Abstract: As a tin-silver plating solution that contains a source of tin ions; a source of silver ions (Ag+); and an organic additive including a silver (Ag) complexing agent, a tin carrier, and a crystal grain refiner is provided, in the case of performing high-speed plating using the plating solution, the generation of whiskers is diminished, the composition of silver ions (Ag+) in the tin-silver plating solution is uniformly maintained, and thus a uniform silver composition in the formed tin-silver solder bumps can be achieved.Type: ApplicationFiled: November 17, 2021Publication date: December 21, 2023Applicants: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, DONGWOO FINE-CHEM CO., LTD.Inventors: Min Hyung LEE, Woon Young LEE, Sang Hoon JIN, Yu Geun JO, Dong Ryul LEE