US 11,885,700 B2
Stretchable strain sensor, combination sensor, and display panel and device
Gae Hwang Lee, Seongnam-si (KR); Youngjun Yun, Seongnam-si (KR); Jong Won Chung, Hwaseong-si (KR); Yeongjun Lee, Seongnam-si (KR); Won-Jae Joo, Seongnam-si (KR); and Yasutaka Kuzumoto, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jun. 4, 2021, as Appl. No. 17/339,140.
Claims priority of application No. 10-2020-0109229 (KR), filed on Aug. 28, 2020.
Prior Publication US 2022/0065717 A1, Mar. 3, 2022
Int. Cl. G01L 1/24 (2006.01); G01L 11/02 (2006.01); G01B 11/16 (2006.01)
CPC G01L 1/248 (2013.01) [G01B 11/16 (2013.01); G01L 11/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A stretchable strain sensor, comprising
a light-emitting element;
an optical structure located in a path of light emitted from the light-emitting element, the optical structure configured to have optical properties that change in response to stretching of at least a portion of the stretchable strain sensor;
a photo-detective element configured to detect light transmitted through the optical structure or reflected by the optical structure; and
a stretchable light-transmitting layer that supports the light-emitting element, wherein each of the optical structure and the photo-detective element is supported by the stretchable light-transmitting layer, is coupled to the stretchable light-transmitting layer, or is embedded in the stretchable light-transmitting layer, wherein at least one of transmittance or reflectance of the optical structure changes in response to stretching of the stretchable light-transmitting layer.