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:
Aug. 24, 2021
Filed:
Oct. 30, 2018
Lg Chem, Ltd., Seoul, KR;
Eun Jung Lim, Daejeon, KR;
Sergey Belyaev, Daejeon, KR;
Dong Hyun Oh, Daejeon, KR;
Jung Sun You, Daejeon, KR;
Jin Hong Kim, Daejeon, KR;
Hyun Jun Lee, Daejeon, KR;
Min Jun Gim, Daejeon, KR;
Abstract
A transmittance-variable device is disclosed herein. In some embodiments, a transmittance-variable device includes first and second guest host layers, the first and second guest host layers are superposed, wherein each of the first and second guest host layers comprise a liquid crystal host and a dichroic dye guest, and wherein the device is capable of switching between a transparent mode and a black mode. The transmittance-variable device can exhibit high transmittance in the transparent state and a high shielding rate in the black state, and can exhibit a high contrast ratio even at the inclination angle, and exhibit excellent viewing angle symmetry in all directions. Such a transmittance-variable device can be applied to various applications including various architectural or automotive materials which need to adjust the transmittance, or eyewear such as goggles for augmented reality experience or sports, sunglasses or helmets.