The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 2021
Filed:
Oct. 11, 2018
Lg Chem, Ltd., Seoul, KR;
Min Soo Song, Daejeon, KR;
Jae Jin Kim, Daejeon, KR;
Ji Young Hwang, Daejeon, KR;
Dae Han Seo, Daejeon, KR;
Se Woo Yang, Daejeon, KR;
Sang Choll Han, Daejeon, KR;
Tae Hee Kim, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
The present application relates to a sheet comprising, in a single layer, a first light control part capable of providing light always totally reflected only in a specific interlayer laminate structure among sheet constructions; and a second light control part capable of providing light whose total reflection is determined according to a fingerprint pattern in contact with the surface layer of the sheet by changing a part of the light provided from the first light control part and totally reflected in the specific interlayer laminate structure at a predetermined angle and emitting it to reach the surface layer of the sheet without being totally reflected in the specific interlayer laminate structure, and a device thereof. The sheet has excellent user identification or authentication capability through a fingerprint and can be applied to a large area display device to recognize a plurality of fingerprint patterns without being influenced by each other.