US 12,468,412 B2
Touch input device that outputs a detection signal based on first and second capacitance information
Bonkee Kim, Seongnam-si (KR); Seyeob Kim, Seongnam-si (KR); Jongsik Kim, Seongnam-si (KR); and Sein Lee, Seongnam-si (KR)
Assigned to HiDeep Inc., (KR)
Filed by HiDeep Inc., Seongnam-si (KR)
Filed on Jun. 15, 2023, as Appl. No. 18/210,499.
Application 18/210,499 is a continuation of application No. 17/600,465, granted, now 12,079,427, previously published as PCT/KR2020/001925, filed on Feb. 11, 2020.
Claims priority of application No. 10-2019-0038292 (KR), filed on Apr. 2, 2019.
Prior Publication US 2023/0325031 A1, Oct. 12, 2023
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01); H10K 59/40 (2023.01)
CPC G06F 3/0412 (2013.01) [G06F 3/0418 (2013.01); G06F 3/0446 (2019.05); G06F 3/0447 (2019.05); H10K 59/40 (2023.02); G06F 2203/04112 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A touch input device, comprising:
a plurality of driving electrodes arranged along a first direction;
a plurality of receiving electrodes disposed to interleave the plurality of driving electrodes, disposed along a second direction different from the first direction, and electrically insulated from the plurality of driving electrodes; and
circuitry connected to the plurality of driving electrodes and the plurality of receiving electrodes,
wherein at least one of the plurality of driving electrodes includes:
a first driving electrode; and
a second driving electrode disposed adjacent to the first driving electrode along the first direction, electrically insulated from the first driving electrode, and different from the first driving electrode,
wherein the first driving electrode, the second driving electrode, and the plurality of receiving electrodes are arranged to form a plurality of unit cells including a first unit cell and a second unit cell,
wherein at least one of the plurality of receiving electrodes is configured to:
include an interface portion adjacent to the first driving electrode in the first direction within the first unit cell,
output a first detection signal including first capacitance information associated with the first driving electrode when a first driving signal is applied to the first driving electrode by the circuitry, and
output a second detection signal including second capacitance information associated with the second driving electrode when a second driving signal is applied to the second driving electrode by the circuitry,
wherein the first driving electrode is disposed in the first unit cell and is disposed closer to the interface portion in the first direction than the second driving electrode is disposed in the second unit cell,
wherein the receiving electrode disposed in the first unit cell is different from the receiving electrode disposed in the second unit cell,
wherein the first driving electrode disposed in the first unit cell is not electrically connected to the second driving electrode disposed in the second unit cell, and
wherein the circuitry is configured to output a third detection signal corresponding to a subtraction based on the first detection signal and the second detection signal,
wherein the first driving electrode in the first unit cell includes a first driving part and a second driving part arranged with the receiving electrode in the first unit cell interposed therebetween, and the first driving part and the second driving are electrically connected to each other, and
wherein the second driving electrode in the second unit cell includes a third driving part and a fourth driving part arranged with the receiving electrode in the second unit cell interposed therebetween, and the third driving part and the fourth driving part are electrically connected to each other.