US 11,927,852 B2
Optical device
Jung Woon Kim, Daejeon (KR); Jung Sun You, Daejeon (KR); Doo Young Huh, Daejeon (KR); and Dong Hyun Oh, Daejeon (KR)
Assigned to LG Chem, Ltd., (KR)
Appl. No. 18/031,838
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Oct. 28, 2021, PCT No. PCT/KR2021/015292
§ 371(c)(1), (2) Date Apr. 13, 2023,
PCT Pub. No. WO2022/092842, PCT Pub. Date May 5, 2022.
Claims priority of application No. 10-2020-0142094 (KR), filed on Oct. 29, 2020.
Prior Publication US 2023/0408872 A1, Dec. 21, 2023
Int. Cl. G02F 1/1339 (2006.01); G02F 1/1337 (2006.01); G02F 1/137 (2006.01)
CPC G02F 1/13398 (2021.01) [G02F 1/1337 (2013.01); G02F 1/137 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical device, comprising:
a liquid crystal element having a top surface, a bottom surface, and sides separating the top surface and the bottom surface; and
an outer layer surrounding the sides of the liquid crystal element, wherein the liquid crystal element comprises:
a first base layer;
a second base layer;
a liquid crystal layer positioned between the first base layer and the second base layer;
a pressure-sensitive adhesive layer positioned between the first base layer and the liquid crystal layer; and
a spacer to maintain a gap between the first base layer and the second base layer,
wherein the optical device satisfies Equation 1:
−T2×0.4≤T1−T2≤T2×0.4  [Equation 1]
wherein, T1 is a thickness of the outer layer, and T2 is a thickness of the liquid crystal element.