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公开(公告)号：US12044822B2
公开(公告)日：2024-07-23
申请号：US16801701
申请日：2020-02-26
Applicant: UTI INC.
Inventor： Deok Young Park , Jae Young Hwang , Hak Chul Kim , Kukhyun Sunwoo , Tea Joo Ha
CPC classification number: G02B1/14 , G02B1/11 , G02B1/18 , G06F1/1609 , G06F1/1641 , G06F1/1652 , G09F9/301 , G06F1/1637 , G06F2203/04102
Abstract: 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 μm and a thickness (t1) of the folding part is 20 to 100 μm. The glass-based cover window has excellent strength and folding properties while maintaining the intrinsic texture of glass.
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公开(公告)号：US11780771B2
公开(公告)日：2023-10-10
申请号：US16892196
申请日：2020-06-03
Applicant: UTI INC.
Inventor： Deok Young Park , Jae Young Hwang , Hak Chul Kim , Kukhyun Sunwoo , Tea Joo Ha
CPC classification number: C03C21/002 , C03C15/00 , C03C17/32 , C03C19/00 , H04M1/0268 , H05K5/0017 , H05K5/03
Abstract: 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.
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13.发明申请公开(公告)号：US20220194848A1
公开(公告)日：2022-06-23
申请号：US17552950
申请日：2021-12-16
Applicant: UTI INC.
Inventor： Deok Young Park , Jae Young Hwang , Kukhyun Sunwoo , Tea Joo Ha
Abstract: Proposed is a flexible cover window manufacturing method capable of simultaneously reinforcing a plane part and a folding part by using alkali-based metal ions having an ionic radius smaller than that of alkali-based metal ions contained in a glass. A flexible cover window manufactured using the same method is also proposed. The plane part and the folding part are simultaneously reinforced using alkali-based metal ions having a smaller ionic radius than alkali-based metal ions included in a glass to simplify the process, and the flexible cover window ensures strength and folding characteristics by controlling tensile stress of the entire part of the flexible cover window.
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公开(公告)号：US20210107826A1
公开(公告)日：2021-04-15
申请号：US17036164
申请日：2020-09-29
Applicant: UTI INC.
Inventor： Jae Young Hwang , Hak Chul Kim , Kukhyun Sunwoo , Tea Joo Ha , Dong Moon Shin , Jung Seok Woo
Abstract: 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.
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公开(公告)号：US20210002947A1
公开(公告)日：2021-01-07
申请号：US16915392
申请日：2020-06-29
Applicant: UTI INC.
Inventor： Deok Young Park , Jae Young Hwang , Hak Chul Kim , Kukhyun Sunwoo , Tea Joo Ha
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US12043570B2
公开(公告)日：2024-07-23
申请号：US17509503
申请日：2021-10-25
Applicant: UTI INC.
Inventor： Kukhyun Sunwoo , Tea Joo Ha , Jun Su Choi , Yoon Jin Choi
CPC classification number: C03C21/002 , C03C4/18 , C03C2204/00
Abstract: Proposed are a flexible cover window for simultaneously improving strength characteristics and folding characteristics of a glass-based ultra-thin flexible cover window, and a method of manufacturing the same. A glass-based flexible cover window is configured such that a ratio of the intensity of replacing metal ions at the glass center to the intensity of replacing metal ions at the glass surface is 1:3 or greater. The present disclosure can provide a flexible cover window with improved window strength characteristics and folding characteristics by adjusting the depth (ion penetration depth) and the surface compressive stress of a tempered layer by performing a gradient tempering process including primary tempering, slimming, and secondary tempering.
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公开(公告)号：US12024462B2
公开(公告)日：2024-07-02
申请号：US17036164
申请日：2020-09-29
Applicant: UTI INC.
Inventor： Jae Young Hwang , Hak Chul Kim , Kukhyun Sunwoo , Tea Joo Ha , Dong Moon Shin , Jung Seok Woo
CPC classification number: C03C15/00 , C03C21/002 , C03C2218/34 , H05K5/0017
Abstract: 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.
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公开(公告)号：US11781371B2
公开(公告)日：2023-10-10
申请号：US16915392
申请日：2020-06-29
Applicant: UTI INC.
Inventor： Deok Young Park , Jae Young Hwang , Hak Chul Kim , Kukhyun Sunwoo , Tea Joo Ha
CPC classification number: E06B3/28 , B32B27/08 , B32B2255/205 , B32B2307/416
Abstract: 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.
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公开(公告)号：US11644600B2
公开(公告)日：2023-05-09
申请号：US17580533
申请日：2022-01-20
Applicant: UTI INC.
Inventor： Jae Young Hwang , Kukhyun Sunwoo , Tea Joo Ha
CPC classification number: G02B1/14 , G02B5/3083 , G06F1/1616 , G06F1/1641 , G09F9/301
Abstract: Proposed is a flexible cover window including a window substrate and an elastic buffer layer having a single-layer structure or a multi-layer structure. The elastic buffer layer is provided on the rear surface of the window substrate to absorb deformation occurring in a folding part. The flexible cover window is a glass-based cover window for protecting a flexible display that is foldable, rollable, slidable, or stretchable. In addition, the flexible cover window has an elastic buffer layer on the rear surface of the window substrate to reduce the difference in elongation between the window substrate and a display panel so that delamination or buckling due to micro-deformation at the folding part thereof can be prevented. Therefore, the life span of the flexible cover window is prolonged and distortion of an image on the screen at the folding part can be prevented.
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公开(公告)号：US20200342789A1
公开(公告)日：2020-10-29
申请号：US16856078
申请日：2020-04-23
Applicant: UTI INC.
Inventor： Deok Young Park , Jae Young Hwang , Hak Chul Kim , Kukhyun Sunwoo , Tea Joo Ha
IPC: G09F9/30
Abstract: 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.
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