公开(公告)号：US10705654B2

公开(公告)日：2020-07-07

申请号：US15675398

申请日：2017-08-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Bumsoo Kim ,  Chadong Kim ,  Junchul Park ,  Kyeonggon Lee ,  YoonKyung Choi

IPC: G06F3/044 ,  G06F3/041

Abstract: An operating method of a touch driving integrated circuit (TDI) sensing a user touch on a touch panel includes: transmitting a first touch signal through a transmission line connected with the touch panel; receiving a first sensing signal through a reception line connected to the touch panel; receiving a first display noise through a detection line connected to the touch panel; and offsetting a noise included in the first sensing signal by using the first display noise.

公开(公告)号：US12019828B2

公开(公告)日：2024-06-25

申请号：US18350578

申请日：2023-07-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Choonghoon Lee ,  Minsung Kim ,  Kyungjik Min ,  Seunghoon Baek ,  Kyeonggon Lee

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/04166 ,  G06F3/0446

Abstract: A touch controller, a touch screen device, and an operating method of the touch controller are provided. A touch controller, performing a touch sensing operation of sensing a touch of a touch panel in a touch sensing period, includes a first clock generator configured to generate a low frequency clock signal for calculating the touch sensing period, a second clock generator configured to generate a high frequency clock signal for performing the touch sensing operation, and a first calibration circuit configured to calibrate a frequency of the low frequency clock signal by using the high frequency clock signal.

公开(公告)号：US09973199B2

公开(公告)日：2018-05-15

申请号：US15199010

申请日：2016-06-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： San-Ho Byun ,  Chadong Kim ,  Jinchul Lee ,  Bumsoo Kim ,  Junchul Park ,  Kyeonggon Lee

IPC: G06F3/044 ,  H03M1/08 ,  H03M3/00

CPC classification number: H03M1/08 ,  G06F3/044 ,  H03M1/144 ,  H03M1/145 ,  H03M3/458 ,  H03M3/464

Abstract: A touch processor circuit includes a capacitance-to-voltage converter and an analog-to-digital converter. The capacitance-to-voltage converter converts an input signal transmitted from a touch sensor into a conversion signal corresponding to a capacitance of the touch sensor. The analog-to-digital converter digitizes the conversion signal transmitted from the capacitance-to-voltage converter and generates a digital value. The analog-to-digital converter includes a first converter, a second converter, and a combination logic circuit. The first converter calculates upper bits of the digital value based on the conversion signal during a first time period. The second converter calculates lower bits of the digital value based on a residue component signal transmitted from the first converter during a second time period. The combination logic circuit combines the upper bits and the lower bits and generates the digital value.