Patents by Inventor Hak-Chul Kim
Hak-Chul Kim 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: 20240067555Abstract: Proposed are a method of manufacturing a sapphire cover window, which includes: preparing a sapphire wafer; forming a cell edge processing portion on the sapphire wafer with a laser beam; forming an etched portion on the sapphire wafer by selectively performing wet etching on the cell edge processing portion; and separating a cell from the sapphire wafer by compressing the sapphire wafer on which the etched portion are formed, and a sapphire cover window manufactured thereby.Type: ApplicationFiled: August 3, 2023Publication date: February 29, 2024Applicant: UTI INC.Inventors: Jae Young HWANG, Hak Chul KIM, Hyunho KIM, Yong Bae NA
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Patent number: 11780771Abstract: Proposed is a flexible cover window having a folding part, the cover window being a glass-based cover window for a flexible display and including: a plane part provided by corresponding to a plane area of the display, and a folding part provided by continuing to the plane part, by corresponding to a folding area of the display, and by being slimmed to be thinner than the plane part, wherein a depth of layer (DOL) of the plane part is larger than a depth of layer (DOL) of the folding part.Type: GrantFiled: June 3, 2020Date of Patent: October 10, 2023Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
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Patent number: 11781371Abstract: Proposed is a flexible cover window for a flexible display, the flexible cover window including: a first window made of glass and provided on an upper part of a first surface of the flexible display; a second window made of glass and provided on an upper part of a second surface of the flexible display; and a folding part provided between the first window and the second window by corresponding to a folding area of the display and filled with a transparent resin material, wherein a transparent resin layer is provided on a total surface of each of the first window and the second window by continuing to the folding part filled with the transparent resin material, and a chamfer part is provided on each of an end part of the first window and an end part of the second window, which are adjacent to the folding part.Type: GrantFiled: June 29, 2020Date of Patent: October 10, 2023Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
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Publication number: 20230303431Abstract: A method of manufacturing a reinforced cover window and a reinforced cover window manufactured thereby are proposed. The method includes a first step of forming a TPI layer on a base substrate, a second step of separating the TPI layer from the base substrate, a third step of forming an adhesive buffer layer on a glass substrate, and a fourth step of stacking the TPI layer on the adhesive buffer layer. This secures the TPI's unique pencil hardness of 4H to 6H while maintaining the unique aesthetic sense and touch feeling of the glass.Type: ApplicationFiled: March 9, 2023Publication date: September 28, 2023Applicant: UTI INC.Inventors: Kukhyun SUNWOO, Hak Chul KIM, Hee Jun AHN, Joo Seok LEE, Min Gyou SEO
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Patent number: 11678452Abstract: A cover window is provided, and more particularly, a flexible glass-based cover window for a flexible display is provided, the cover window including: a folding part slimmed by corresponding to a folding area of the display, and a boundary part provided on opposite ends of the folding part, the boundary part having a thickness gradually becoming larger from the folding part and continuing to a plane area of the cover window, wherein inclination of the boundary part is 1 to 10° relative to the folding part.Type: GrantFiled: April 9, 2020Date of Patent: June 13, 2023Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
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Patent number: 11643361Abstract: The present invention provides a method of increasing the strength of a glass substrate for optical filters and a tempered-glass optical filter using a tempered glass substrate manufactured using the same, in which the glass substrate for optical filters is subjected to chemical tempering so that a compressive stress (CS) and a depth of layer (DOL) of the glass substrate are adjusted to increase the bending strength thereof.Type: GrantFiled: December 24, 2019Date of Patent: May 9, 2023Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Hack Seon Kim, Tea Joo Ha
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Publication number: 20220195235Abstract: Proposed are a coating resin composition for a flexible cover window and a flexible cover window formed using the same composition. The coating resin composition, includes, relative to the total weight thereof, 10 to 150 parts by weight of a urethane (meth)acrylate-based oligomer prepared by synthesizing an acrylic monomer containing a hydroxyl group with a urethane prepolymer synthesized from an ether-based polyol, diisocyanate, and polyoxyalkylene-based bisphenol ether, 1 to 60 parts by weight of a first photocurable acrylate-based monomer, 0.5 to 10 parts by weight of a second photocurable acrylate-based monomer, 0.5 to 10 parts by weight of an alkoxy silane coupling agent, 0.1 to 5 parts by weight of a siloxane additive, and to 20 parts by weight of a photopolymerization initiator.Type: ApplicationFiled: December 17, 2021Publication date: June 23, 2022Applicant: UTI INC.Inventors: Kukhyun SUNWOO, Hak Chul Kim, Tea Joo Ha, Jae Suk Oh, Jung Cheol Noh
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Patent number: 11322054Abstract: A cover window is proposed. Particularly, a flexible cover window having improved visibility for a flexible display is proposed, the flexible cover window including: a first window made of glass and provided on an upper part of a first surface of the flexible display; a second window made of glass and provided on an upper part of a second surface of the flexible display; and a folding part provided between the first window and the second window by corresponding to a folding area of the display and filled with a transparent resin material, wherein a transparent resin layer is provided on a total surface of each of the first window and the second window by continuing to the folding part filled with the transparent resin material.Type: GrantFiled: April 23, 2020Date of Patent: May 3, 2022Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
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Patent number: 11243339Abstract: Disclosed is an optical-filter-cell-array structure and a method of manufacturing the same. An optical filter which includes an optical filter layer for blocking light of a specific wavelength formed on an upper side or a lower side of a tempered glass substrate is provided in the form of a cell array. The method includes forming a sheet-cutting part according to the form of a cell array on a mother glass substrate, tempering the mother glass substrate so that a lateral side of the mother glass substrate is tempered through the sheet-cutting part while an upper side and a lower side of the mother glass substrate are tempered, and forming an optical filter layer on the upper side or the lower side of the mother glass substrate.Type: GrantFiled: December 4, 2018Date of Patent: February 8, 2022Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Hyunho Kim, Tea Joo Ha, JongHwa Lee
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Patent number: 11079524Abstract: Disclosed is a near-infrared filter. The near-infrared filter includes a filter-support-seat body including a quadrangular pillar cell region and a dummy region which surrounds the cell region and which is gradually reduced in size from the cell region, and an optical-filter-subdivision layer covering the cell region and the dummy region at a front side and a rear side of the filter-support-seat body based on the path of a light beam which is incident on the front side and penetrates the rear side in the filter-support-seat body. The dummy region has a chamfered side that is slanted obliquely in at least one side of the front side and the rear side of the filter-support-seat body. Further, a method of manufacturing the near-infrared filter is disclosed for each process step.Type: GrantFiled: March 19, 2019Date of Patent: August 3, 2021Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Hyunho Kim, Tea Joo Ha, Jonghwa Lee
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Publication number: 20210191467Abstract: The present disclosure provides a flexible cover window comprising at least one flat portion corresponding to flat areas of a flexible display and a folding portion corresponding to a folding area of the flexible display and formed to be connected to the at least one flat portion, wherein the flexible cover window is made from a glass substrate having a pattern layer for impact dispersion thereon, wherein the pattern layer for impact dispersion is formed on the flat portion and the folding portion, and the height of the pattern layer is less than half of the thickness of the glass substrate.Type: ApplicationFiled: December 9, 2020Publication date: June 24, 2021Applicant: UTI INC.Inventors: Kukhyun SUNWOO, Hak Chul KIM, Tea Joo HA
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Publication number: 20210107826Abstract: A method of manufacturing a flexible cover window is proposed. The flexible cover window includes a planar part and a folded part extending continuously from the planar part, wherein the folded part is thinner than the planar part. The method includes: forming a photoresist layer on a glass substrate, patterning the photoresist layer to form a gradation resist pattern layer for forming the folded part on the glass substrate, forming the folded part having an inclined portion formed between the folded part and the planar part using the gradation resist pattern layer as a mask, removing the gradation resist pattern layer, and reinforcing the glass substrate.Type: ApplicationFiled: September 29, 2020Publication date: April 15, 2021Applicant: UTI INC.Inventors: Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha, Dong Moon Shin, Jung Seok Woo
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Publication number: 20210002947Abstract: Proposed is a flexible cover window for a flexible display, the flexible cover window including: a first window made of glass and provided on an upper part of a first surface of the flexible display; a second window made of glass and provided on an upper part of a second surface of the flexible display; and a folding part provided between the first window and the second window by corresponding to a folding area of the display and filled with a transparent resin material, wherein a transparent resin layer is provided on a total surface of each of the first window and the second window by continuing to the folding part filled with the transparent resin material, and a chamfer part is provided on each of an end part of the first window and an end part of the second window, which are adjacent to the folding part.Type: ApplicationFiled: June 29, 2020Publication date: January 7, 2021Applicant: UTI INC.Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
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Publication number: 20200392038Abstract: Proposed is a flexible cover window having a folding part, the cover window being a glass-based cover window for a flexible display and including: a plane part provided by corresponding to a plane area of the display, and a folding part provided by continuing to the plane part, by corresponding to a folding area of the display, and by being slimmed to be thinner than the plane part, wherein a depth of layer (DOL) of the plane part is larger than a depth of layer (DOL) of the folding part.Type: ApplicationFiled: June 3, 2020Publication date: December 17, 2020Applicant: UTI INC.Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
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Publication number: 20200342789Abstract: A cover window is proposed. Particularly, a flexible cover window having improved visibility for a flexible display is proposed, the flexible cover window including: a first window made of glass and provided on an upper part of a first surface of the flexible display; a second window made of glass and provided on an upper part of a second surface of the flexible display; and a folding part provided between the first window and the second window by corresponding to a folding area of the display and filled with a transparent resin material, wherein a transparent resin layer is provided on a total surface of each of the first window and the second window by continuing to the folding part filled with the transparent resin material.Type: ApplicationFiled: April 23, 2020Publication date: October 29, 2020Applicant: UTI INC.Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
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Publication number: 20200324521Abstract: A cover window is provided, and a manufacturing method of a flexible glass-based cover window having improved visibility for a flexible display is provided, the method including: forming a folding part slimmed by corresponding to a folding area of the display, and forming a boundary part on opposite ends of the folding part, the boundary part having a thickness gradually becoming larger from the folding part and continuing to a plane area of the cover window, and having a shape of at least two steps, wherein the folding part and the boundary part are configured by a multi-slimming process.Type: ApplicationFiled: March 27, 2020Publication date: October 15, 2020Applicant: UTI INC.Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
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Publication number: 20200329575Abstract: A cover window is provided, and more particularly, a flexible glass-based cover window for a flexible display is provided, the cover window including: a folding part slimmed by corresponding to a folding area of the display, and a boundary part provided on opposite ends of the folding part, the boundary part having a thickness gradually becoming larger from the folding part and continuing to a plane area of the cover window, wherein inclination of the boundary part is 1 to 10° relative to the folding part.Type: ApplicationFiled: April 9, 2020Publication date: October 15, 2020Applicant: UTI INC.Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
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Publication number: 20200292731Abstract: A cover window is provided, which is a flexible cover window, the cover window being a glass-based cover window for a flexible display and including: a folding part slimmed by corresponding to a folding area of the display, wherein a thickness (t2) of the cover window is 50 to 300 ?m and a thickness (t1) of the folding part is 20 to 100 ?m. The glass-based cover window has excellent strength and folding properties while maintaining the intrinsic texture of glass.Type: ApplicationFiled: February 26, 2020Publication date: September 17, 2020Applicant: UTI INC.Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Kukhyun Sunwoo, Tea Joo Ha
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Publication number: 20200207658Abstract: The present invention provides a method of increasing the strength of a glass substrate for optical filters and a tempered-glass optical filter using a tempered glass substrate manufactured using the same, in which the glass substrate for optical filters is subjected to chemical tempering so that a compressive stress (CS) and a depth of layer (DOL) of the glass substrate are adjusted to increase the bending strength thereof.Type: ApplicationFiled: December 24, 2019Publication date: July 2, 2020Applicant: UTI INC.Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Hack Seon Kim, Tea Joo Ha
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Patent number: 10590029Abstract: The present invention relates to a manufacturing method for a camera window and a camera window manufactured thereby. A conventional camera window is configured such that an etching pattern is provided on a back surface of a glass sheet, and a deposition layer is provided on the etching pattern, thereby improving reflectivity, whereby indirect external recognition of the etching pattern is performed, but in the present invention, a distinctive pattern is provided on a front surface of a glass sheet such that direct external recognition of the pattern is possible, whereby it is possible to recognize a distinctive pattern line.Type: GrantFiled: January 9, 2018Date of Patent: March 17, 2020Assignee: UTI, Inc.Inventors: Deok Young Park, Jae Young Hwang, Hak Chul Kim, Tea Joo Ha