Samsung Display Co., Ltd.

Hyeonseo Cho

Seungrok Lee

Bogeun Yuk

Jungmok Park

Il Ho Lee

Yerin Oh

Wankee Jun

Min-hong Kim

A noise reduction method of an input sensing part includes calculating a first calculation value by subtracting a minimum value from a maximum value of values of reception channels, calculating a first average value of first calculation values that exclude a maximum first calculation value, calculating a deviation of the first calculation values from the first average value as third calculation values, detecting a reception channel with a maximum third calculation value as a noise channel, correcting one of a maximum value or a minimum value of the noise channel based on a result of comparing a first value obtained by subtracting an average value of the noise channel from the maximum value of the noise channel, with a second value obtained by subtracting the minimum value of the noise channel from the average value of the noise channel, and subtracting a predetermined value from values of the noise channel.

Input sensing part and noise reduction method of the input sensing part

A driving method of a touch sensing part includes sensing a touch of a user by comparing a capacitance formed by a first sensing electrode and a second sensing electrode crossing the first sensing electrode with a reference value in a reference touch mode, varying the reference value such that the reference value decreases along a decrease in the capacitance, during a first period, when an ambient temperature is lower than a reference temperature, sensing the user's touch by comparing the reference value and the capacitance, with the reference value maintained uniformly, during a second period following the first period, when the touch of the user is made, and varying the reference value such that the reference value decreases, during a third period following the second period.

Touch sensing part and driving method thereof

A display device includes a display panel that displays an image, an input sensing layer disposed on the display panel and that senses an input applied thereto from outside of the display device, a display driver that receives an image signal and drives the display panel at a first driving frequency or a second driving frequency lower than the first driving frequency, and a sensing driver that drives the input sensing layer. The display panel displays the image in a plurality of frames, each including a first period and/or a second period. The sensing driver drives the input sensing layer in the first period of each of the frames when the display panel is driven at the first driving frequency, and drives the input sensing layer in the second period of each of the frames when the display panel is driven at the second driving frequency.

Display device including sensing driver that drives input sensing layer

Growing community of inventors

Yongin-si, South Korea

Hyeonseo Cho