US 12,135,488 B2
Light modulating device
Min Jun Gim, Daejeon (KR); Dong Hyun Oh, Daejeon (KR); Jung Sun You, Daejeon (KR); Jin Hong Kim, Daejeon (KR); and Jung Woon Kim, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 18/010,558
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Jul. 29, 2021, PCT No. PCT/KR2021/009926
§ 371(c)(1), (2) Date Dec. 15, 2022,
PCT Pub. No. WO2022/025684, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 10-2020-0095864 (KR), filed on Jul. 31, 2020.
Prior Publication US 2023/0258992 A1, Aug. 17, 2023
Int. Cl. G02F 1/137 (2006.01); G02F 1/1337 (2006.01); G02F 1/139 (2006.01); G02F 1/1335 (2006.01)
CPC G02F 1/137 (2013.01) [G02F 1/1337 (2013.01); G02F 1/1393 (2013.01); G02F 1/133528 (2013.01); G02F 2202/28 (2013.01); G02F 2203/01 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A light modulating device, comprising:
a first substrate;
a second substrate; and
a liquid crystal layer,
wherein each of the first and second substrates has a first surface and a second surface,
wherein the first surfaces of the first and second substrates face each other,
wherein the liquid crystal layer is disposed between the first and second substrates, and
wherein the light modulating device satisfies Equation 1 below:
T2≤3×T1  [Equation 1]
wherein, T1 is an initial transmittance measured after vertically orienting the liquid crystal layer and placing it between orthogonal polarizers, and T2 is a transmittance measured after heating the liquid crystal layer showing the transmittance of T1 at 100° C. for 5 minutes, and then placing it between the orthogonal polarizers.