US 12,313,481 B2
Stretchable strain sensor, combination sensor, and display panel and device
Gae Hwang Lee, Suwon-si (KR); Youngjun Yun, Suwon-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 Dec. 11, 2023, as Appl. No. 18/535,479.
Application 18/535,479 is a division of application No. 17/339,140, filed on Jun. 4, 2021, granted, now 11,885,700.
Claims priority of application No. 10-2020-0109229 (KR), filed on Aug. 28, 2020.
Prior Publication US 2024/0118149 A1, Apr. 11, 2024
Int. Cl. G01L 1/24 (2006.01); G01B 11/16 (2006.01); G01L 11/02 (2006.01)
CPC G01L 1/248 (2013.01) [G01B 11/16 (2013.01); G01L 11/02 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A combination sensor, comprising:
a bio-signal sensor configured to detect a bio-signal;
a stretchable strain sensor configured to detect a strain caused based on stretching of at least a portion of the stretchable strain sensor; and
a light-emitting element configured to supply light to the bio-signal sensor and the stretchable strain sensor,
wherein the bio-signal sensor includes a first photo-detective element configured to detect reflected light wherein light supplied from the light-emitting element is reflected by an object of a living body,
wherein the stretchable strain sensor includes
an optical structure disposed in a path of light irradiated from the light-emitting element, the optical structure configured to have optical properties that change in response to stretching of at least the portion of the stretchable strain sensor, and
a second photo-detective element configured to detect light transmitted through the optical structure or reflected by the optical structure.