公开(公告)号：US11047231B2

公开(公告)日：2021-06-29

申请号：US16647017

申请日：2019-05-16

申请人： SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

发明人： Choong-Ki Chung ,  Seung Hwan Lee ,  Young Woo Song ,  Jae Gyu Kim ,  Bae Lee ,  Won Chan Lee

IPC分类号： E21B49/00 ,  E21B37/02 ,  G01N3/24

摘要： A borehole shear test apparatus of the present disclosure includes a main casing, a horizontal loading module and shear plates, and performs both a borehole shear test and a borehole jack test by calculating and measuring horizontal displacement produced at a borehole wall when pressed by the shear plates, and at the same time, measuring a vertical load applied when a wedge element moves down.

公开(公告)号：US11466838B2

公开(公告)日：2022-10-11

申请号：US16780924

申请日：2020-02-04

申请人： Seoul National University R&DB Foundation

发明人： Yongtaek Hong ,  Seung Hwan Lee ,  Hyung Soo Yoon ,  Byoung Ho Lee ,  Chan Hyung Yoo ,  Dong Yeon Kim

IPC分类号： G09F9/30 ,  G06F1/16 ,  F21V7/00 ,  F21V13/14 ,  F21V7/04

摘要： Provided are a multi-flexible display device having improved image discontinuity at a panel boundary, and a method of manufacturing a double-sided reflector therefor. An image discontinuity phenomenon at a boundary between panels of a multi-flexible display device manufactured by tiling a plurality of flexible displays including a bendable panel may be easily and simply ameliorated using a double-sided reflector capable of being manufactured through a simple process and at low cost.