公开(公告)号：US20220375415A1

公开(公告)日：2022-11-24

申请号：US17817501

申请日：2022-08-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SUNG HWAN KIM ,  WOOK LEE ,  HAYONG JUNG

IPC: G09G3/3291 ,  H03M1/36

Abstract: A sensing circuit includes a first input selecting circuit connected to a first sensing line and a second sensing line, a first path setting circuit that sets a path of a first sensing signal received from the first sensing line or a path of a second sensing signal received from the second sensing line, a second path setting circuit that sets a path of a sensing reference voltage, a first switch matrix connected to the first path setting circuit and the second path setting circuit, a first mode setting circuit connected to a first output terminal of the first switch matrix, a first common sensing amplifier connected to the first mode setting circuit, a second mode setting circuit connected to a second output terminal of the first switch matrix, and a second common sensing amplifier connected to the second mode setting circuit.

公开(公告)号：US20240038168A1

公开(公告)日：2024-02-01

申请号：US18195684

申请日：2023-05-10

Applicant: Samsung Display Co., LTD.

Inventor： HAYONG JUNG ,  WOOK LEE ,  SUNG HWAN KIM ,  JAEHOON SHIN

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2330/12 ,  G09G2310/08 ,  G09G2320/029

Abstract: A sensing circuit includes a first line selection switch which connects a first sensing line to a sensing channel in a first sub-sensing period, a first noise selection switch which connects the first sensing line to a reference channel in a second sub-sensing period, a second line selection switch which connects a second sensing line to the sensing channel in the second sub-sensing period, and a second noise selection switch which connects the second sensing line to the reference channel in the first sub-sensing period. The sensing channel samples a first sensing voltage and noise of the first sensing line and the reference channel samples noise of the second sensing line in a first sampling period, and the sensing channel samples a second sensing voltage and noise of the second sensing line and the reference channel samples noise of the first sensing line in a second sampling period.

公开(公告)号：US20220076638A1

公开(公告)日：2022-03-10

申请号：US17467502

申请日：2021-09-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SUNG HWAN KIM ,  WOOK LEE ,  HAYONG JUNG

IPC: G09G3/3291 ,  H03M1/36

Abstract: A sensing circuit includes a first input selecting circuit connected to a first sensing line and a second sensing line, a first path setting circuit that sets a path of a first sensing signal received from the first sensing line or a path of a second sensing signal received from the second sensing line, a second path setting circuit that sets a path of a sensing reference voltage, a first switch matrix connected to the first path setting circuit and the second path setting circuit, a first mode setting circuit connected to a first output terminal of the first switch matrix, a first common sensing amplifier connected to the first mode setting circuit, a second mode setting circuit connected to a second output terminal of the first switch matrix, and a second common sensing amplifier connected to the second mode setting circuit.