公开(公告)号：US20240368031A1

公开(公告)日：2024-11-07

申请号：US18772914

申请日：2024-07-15

Applicant: UTI INC. ,  Corning Incorporated

Inventor： Deok Young PARK ,  Jae Young HWANG ,  Kukhyun SUNWOO ,  Tea Joo HA

IPC: C03C21/00 ,  G06F1/16

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.

公开(公告)号：US20240067555A1

公开(公告)日：2024-02-29

申请号：US18365093

申请日：2023-08-03

Applicant: UTI INC.

Inventor： Jae Young HWANG ,  Hak Chul KIM ,  Hyunho KIM ,  Yong Bae NA

IPC: C03B33/02 ,  B23K26/0622 ,  B23K26/364 ,  B23K26/402 ,  C03B33/04 ,  C03C15/00

CPC classification number: C03B33/0222 ,  B23K26/0624 ,  B23K26/364 ,  B23K26/402 ,  C03B33/04 ,  C03C15/00 ,  B23K2103/52

Abstract: 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.

公开(公告)号：US20220236457A1

公开(公告)日：2022-07-28

申请号：US17580533

申请日：2022-01-20

Applicant: UTI INC.

Inventor： Jae Young HWANG ,  Kukhyun SUNWOO ,  Tea Joo HA

IPC: G02B1/14 ,  G02B5/30 ,  G06F1/16 ,  G09F9/30

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.