US 12,379,807 B2
Input sensing device and display device including the same
Ji Woong Kim, Yongin-si (KR); Moon Jae Jeong, Yongin-si (KR); Hyung Gun Ma, Yongin-si (KR); Tae Hun Lee, Yongin-si (KR); Keum Dong Jung, Yongin-si (KR); and Sang Hyun Heo, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Feb. 5, 2024, as Appl. No. 18/432,158.
Application 18/432,158 is a continuation of application No. 18/176,440, filed on Feb. 28, 2023, granted, now 11,893,186.
Claims priority of application No. 10-2022-0080033 (KR), filed on Jun. 29, 2022.
Prior Publication US 2024/0176450 A1, May 30, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/04182 (2019.05) [G06F 3/0446 (2019.05); G06F 3/0447 (2019.05)] 24 Claims
OG exemplary drawing
 
1. An analog front-end circuit, comprising:
a charge amplification component that includes a first input terminal that receives a first sensing signal, a second input terminal that receives a second sensing signal, a first output terminal, and a second output terminal, wherein the charge amplification component differentially amplifies the first sensing signal and the second sensing signal, and outputs a differentially amplified first differential signal to the first output terminal, and a differentially amplified second differential signal to the second output terminal;
a filter component that includes a first band-pass filter and a second band-pass filter, wherein the first band-pass filter is connected to the first output terminal and the second output terminal and the second band-pass filter is connected to the first output terminal and the second output terminal; and
a buffer component connected to the first band-pass filter and the second band-pass filter;
wherein the first band-pass filter and the second band-pass filter are connected in parallel between the charge amplification component and the buffer component.