Samsung Display Co., Ltd.

Yong Jin Jee

A Ram Song

Yun Ho Kim

Sang Hun Park

Gwang-Bum Ko

Hideo Yoshimura

Hoe Seok Na

A touch sensor includes a plurality of touch driving electrodes arranged in each of a plurality of touch driving columns in a column direction, and a plurality of touch sensing electrodes arranged in each of a plurality of touch sensing columns in the column direction, the plurality of touch driving columns and the plurality of touch sensing columns being alternately arranged in a row direction. In each of the plurality of touch driving columns, two or more odd-numbered touch driving electrodes among the plurality of touch driving electrodes are substantially simultaneously driven during a first touch group driving period. In each of the plurality of touch driving columns, two or more even-numbered touch driving electrodes among the plurality of touch driving electrodes are substantially simultaneously driven during a second touch group driving period that is different from the first touch group driving period.

Touch sensor, display device, and method of driving a touch sensor

An operating method of a touch sensor includes sensing first touch intensities in a first touch-sensing area by using first touch cells, sensing second touch intensities in a second touch-sensing area that is adjacent to the first touch-sensing area by using second touch cells each having an area that is smaller than that of each of the first touch cells, grouping some second touch cells among the second touch cells as a touch-sensing group having a same area as one of the first touch cells, calculating a representative touch intensity of the touch-sensing group by using the second touch intensities sensed by second touch cells in the touch-sensing group, and detecting a touch position by using the first touch intensities and the representative touch intensity.

Touch sensor, display device including the same, and operating method of the touch sensor

A touch sensor includes a plurality of driving electrodes, a plurality of sensing electrodes that intersect the plurality of driving electrodes, a driver configured to substantially simultaneously supply driving signals to at least some of the plurality of driving electrodes, a sensing unit configured to detect sensing signals from the plurality of sensing electrodes, and a touch controller configured to control the driver so that the number of driving electrodes to which the driving signals are supplied in a first driving period is different from the number of driving electrodes to which the driving signals are supplied in a second driving period.

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Yongin-si, South Korea

Yong Jin Jee