US 11,934,618 B2
Display device and a touch input system including the same
Won Sang Park, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Sep. 27, 2021, as Appl. No. 17/485,605.
Claims priority of application No. 10-2021-0008710 (KR), filed on Jan. 21, 2021.
Prior Publication US 2022/0229514 A1, Jul. 21, 2022
Int. Cl. G06F 3/044 (2006.01); H01L 27/15 (2006.01); H01L 33/50 (2010.01); H01L 33/58 (2010.01); H10K 50/844 (2023.01); H10K 50/86 (2023.01); H10K 59/12 (2023.01); H10K 59/38 (2023.01); H10K 59/40 (2023.01)
CPC G06F 3/0443 (2019.05) [G06F 3/0446 (2019.05); H01L 27/156 (2013.01); H01L 33/50 (2013.01); H01L 33/58 (2013.01); H10K 50/844 (2023.02); H10K 50/865 (2023.02); H10K 59/12 (2023.02); H10K 59/38 (2023.02); H10K 59/40 (2023.02); G06F 2203/04103 (2013.01); G06F 2203/04112 (2013.01); H01L 2933/0091 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A display device, comprising:
a display unit comprising a plurality of emission areas which emit light; and
a plurality of touch electrodes disposed on the display unit to detect a touch input,
wherein at least some of the touch electrodes include a code pattern part comprising a plurality of code patterns that include cutouts corresponding to location information,
wherein the touch electrodes are formed in a mesh shape in a plan view and surround at least one of the emission areas,
wherein the code pattern part further comprises:
a reference point, which is used to identify the code pattern part, wherein the reference point corresponds to an area between intersecting first and second touch electrodes, the area including a first cut between first and second parts of the first touch electrode that protrude towards and face each other and a second cut between third and fourth parts of the second touch electrode that protrude towards and face each other, wherein ends of the first and second parts at the first cut are not connected to each other and ends of the third and fourth parts at the second cut are not connected to each other;
a first reference line extending from the reference point along a plurality of intersection points of the touch electrode that are arranged in a first direction; and
a second reference line defined by connecting a plurality of intersection points and a cutout part, the intersection points disposed in a second direction intersecting the first direction from the reference point, the cutout part being disposed between the intersection points,
the code patterns are disposed in an area defined by the first and second reference lines, the area including a plurality of rows and a plurality of columns,
the touch electrodes are not physically connected to each other in the reference point, and
the reference point and the cutout part of the second reference line have the same shape.