US 12,066,340 B2
Force sensor preventing malfunction due to component interference and display device including the same
Won Ki Hong, Suwon-si (KR); Tae Hee Lee, Hwaseong-si (KR); and Sung Kook Park, Suwon-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Mar. 18, 2019, as Appl. No. 16/356,208.
Claims priority of application No. 10-2018-0056273 (KR), filed on May 17, 2018.
Prior Publication US 2019/0353540 A1, Nov. 21, 2019
Int. Cl. G06F 3/041 (2006.01); G01L 1/20 (2006.01)
CPC G01L 1/205 (2013.01) [G06F 3/041 (2013.01); G06F 2203/04105 (2013.01)] 36 Claims
OG exemplary drawing
 
1. A display device, comprising:
a display panel including a first edge extended in a first direction; and
a first force sensor comprising a substrate and disposed adjacent to the first edge of the display panel and overlapping the display panel, wherein the first force sensor extends along the first edge of the display panel in the first direction,
wherein the first force sensor comprises a plurality of first sensing regions arranged in the first direction and a second sensing region adjacent to the first sensing regions in the first direction, the first sensing regions disposed closer to a first end of the first force sensor than the second sensing region, and the second sensing region disposed closer to a second end of the first force sensor than the first sensing regions,
wherein the first sensing regions are distinct from one another and are separated from one another by a plurality of first non-sensing regions in the first direction,
wherein a length of the second sensing region extending in the first direction is larger than a length of each of the first sensing regions extending in the first direction,
wherein the substrate of the first force sensor comprises an inwardly extending recess disposed at an inner side of the substrate of the first force sensor between an endmost first sensing region among the first sensing regions and the second sensing region in the first direction,
wherein the substrate of the first force sensor comprises a first outermost edge extended in the first direction and a second outermost edge extended in the first direction, and the inwardly extending recess extends inward from the first outermost edge of the substrate of the first force sensor toward the second outermost edge of the substrate of the first force sensor,
wherein the first force sensor comprises a first electrode disposed over the first sensing regions and the second sensing region and including a first stem electrode,
wherein the first stem electrode extends in the first direction in an area adjacent to the endmost first sensing region, is bent a first time in an area between the endmost first sensing region and the second sensing region to extend inward from the first outermost edge of the substrate of the first force sensor toward the second outermost edge of the substrate of the first force sensor in correspondence with the inwardly extending recess, is bent a second time in the area between the endmost first sensing region and the second sensing region to extend in the first direction in correspondence with the inwardly extending recess, is bent a third time in the area between the endmost first sensing region and the second sensing region to extend toward the first outermost edge of the substrate of the first force sensor in correspondence with the inwardly extending recess, and is bent a fourth time in the area between the endmost first sensing region and the second sensing region to extend in the first direction in an area adjacent to the second sensing region to bypass the inwardly extending recess and connect the first sensing regions to the second sensing region.