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:
May. 18, 2021
Filed:
Apr. 30, 2018
Lg Chem, Ltd., Seoul, KR;
Min Jun Gim, Daejeon, KR;
Eun Jung Lim, Daejeon, KR;
Jung Sun You, Daejeon, KR;
Hyun Jun Lee, Daejeon, KR;
In Ju Mun, Daejeon, KR;
Dong Hyun Oh, Daejeon, KR;
Nam Gyu Kim, Daejeon, KR;
Jin Hong Kim, Daejeon, KR;
Hyo Jin Lee, Daejeon, KR;
Nam Hun Kim, Daejeon, KR;
Abstract
A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, wherein the active liquid crystal layer is capable of switching between a vertical orientation state and a twisting orientation state upon application of a voltage, each of the first and second polymer film substrates has an in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.