US 12,147,623 B2
Sensor device and driving method thereof
Hyung Gun Ma, Yongin-si (KR); Sang Hyun Heo, Yongin-si (KR); and Moon Jae Jeong, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Aug. 11, 2022, as Appl. No. 17/819,071.
Claims priority of application No. 10-2021-0171308 (KR), filed on Dec. 2, 2021.
Prior Publication US 2023/0176668 A1, Jun. 8, 2023
Int. Cl. G06F 3/041 (2006.01); G09G 3/20 (2006.01); H03F 3/68 (2006.01); H03F 3/70 (2006.01)
CPC G06F 3/0412 (2013.01) [G06F 3/04166 (2019.05); G09G 3/2096 (2013.01); H03F 3/68 (2013.01); H03F 3/70 (2013.01); G09G 2310/0291 (2013.01); H03F 2200/168 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sensor device comprising:
a plurality of first sensors receiving a plurality of driving signals;
a plurality of second sensors outputting a plurality of sensing signals in response to the driving signals; and
a sensor receiver receiving the sensing signals from the second sensors, and including a charge amplifier and a band pass filter filtering the sensing signals,
wherein the band pass filter includes:
a multi-path filter in which a frequency of the driving signals is set as a center frequency;
a gain amplifier amplifying signals filtered through the multi-path filter according to a predetermined gain value; and
a buffer isolating the multi-path filter and the gain amplifier from each other,
wherein the charge amplifier generates a first input signal corresponding to a difference between the sensing signals from two of the second sensors and a second input signal inverted from the first input signal, for output to the multi-path filter.