Touch display device including touch driving integrated circuit for noise detection and compensation and operating method of touch driving integrated circuit
AssigneeSamsung Electronics Co., Ltd.
InventorsBumsoo Kim, Chadong Kim, Junchul Park, Kyeonggon Lee, YoonKyung Choi
Life of this patent
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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.
Claims19
An operating method of a touch driving integrated circuit (TDI) sensing a user touch or proximity on a touch panel, the method comprising:
- transmitting a first touch signal through a first transmission line connected to the touch panel;
- receiving a first sensing signal including a first display noise through a reception line connected to the touch panel;
- receiving a second display noise through a detection line connected to the touch panel;
- and
- offsetting the first display noise included in the first sensing signal by using the second display noise,
- wherein the detection line is a second transmission line which is adjacent to the first transmission line and connected to the touch panel,
- wherein, during transmission of the first touch signal, the TDI does not transmit a touch signal sensing the user touch or proximity to the second transmission line.
A touch display device comprising:
- a display panel comprising a plurality of pixels;
- a touch panel comprising a plurality of transmission lines extending in a row direction and a plurality of reception lines extending in a column direction;
- and
- a touch driving integrated circuit (TDI) configured to provide a touch signal to a first transmission line among the plurality of transmission lines, receive sensing signals including a display noise, which is transferred from the display panel to the touch panel, through the plurality of reception lines, detect the display noise through a second transmission line among the plurality of transmission lines, to offset the display noise included in the sensing signals by using the display noise detected through the second transmission line, and sense a user touch or proximity on the touch panel based on the sensing signals from which the display noise are offset,
- wherein during the touch signal being transmitted to the first transmission line, the TDI does not transmit the touch signal to the second transmission line.
A touch display device comprising:
- a display panel comprising a plurality of pixels;
- a touch panel configured to receive a user touch or proximity thereon and comprising a plurality of transmission lines and a plurality of reception lines;
- and
- a touch driving integrated circuit (TDI) configured to transmit a first touch signal sensing the user touch or proximity to a first transmission line among the transmission lines, receive the first touch signal plus a first noise through a first reception line among the reception lines, detect a second noise through at least one of a second transmission line among the transmission lines and a second reception line among the reception lines, and output the first touch signal less the first noise by offsetting the first noise with the second noise for determination of the sensing the user touch or proximity,
- wherein, during transmission of the first touch signal, the TDI does not transmit a touch signal sensing the user touch or proximity to the at least one of the second transmission line and the second reception line.
Dependencies are inferred from the claim text.