US 12,449,709 B2
Spatial light modulator and electronic apparatus including the same
Byunggil Jeong, Anyang-si (KR); Sunil Kim, Osan-si (KR); Junghyun Park, Seoul (KR); and Minkyung Lee, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jun. 2, 2022, as Appl. No. 17/830,977.
Claims priority of application No. 10-2021-0175199 (KR), filed on Dec. 8, 2021.
Prior Publication US 2023/0176445 A1, Jun. 8, 2023
Int. Cl. G02F 1/29 (2006.01)
CPC G02F 1/292 (2013.01) [G02F 2203/24 (2013.01); G02F 2203/50 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A spatial light modulator comprising:
a first reflective layer and a second reflective layer, the second reflective layer comprising grating structures of a first group and grating structures of a second group which are independently driven, and are immediately adjacent to each other;
a cavity layer provided between the first reflective layer and the second reflective layer; and
a thermoelectric layer configured to cause heat transfer to occur between the thermoelectric layer and the second reflective layer,
wherein the thermoelectric layer comprises a first thermoelectric layer and a second thermoelectric layer to which different electrical signals are applied, wherein the first thermoelectric layer corresponds to the grating structures of the first group, and the second thermoelectric layer corresponds to the grating structures of the second group.