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US 11,537,252 B2Granted
Input sensing and display device with sinusoidal driving signals with different frequencies
AssigneeSamsung Display Co., Ltd.
InventorsChoon Hyop Lee, Jang Hui Kim, Jae Won Kim, In Nam Lee
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Abstract
An input sensing device includes an input sensing panel including driving electrodes and sensing electrodes, a driving signal generator that provides driving signals to the driving electrodes, respectively, and a sensing unit that receives sensing signals according to the driving signals from the sensing electrodes, and determines whether a touch is performed based on the sensing signals. Each of the driving signals includes a sinusoidal wave, and frequencies of at least some of the driving signals are different from each other.
Claims25
An input sensing device comprising:
- an input sensing panel which includes driving electrodes and sensing electrodes;
- a driving signal generator which provides driving signals to the driving electrodes, respectively;
- and
- a sensing unit which receives sensing signals according to the driving signals from the sensing electrodes, and determines whether a touch is performed based on the sensing signals,
- wherein each of the driving signals includes a sinusoidal wave,
- wherein frequencies of at least some of the driving signals are different from each other,
- wherein the input sensing panel includes a first area and a second area,
- wherein the first area is farther from the driving signal generator or the sensing unit than the second area is from the driving signal generator or the sensing unit,
- wherein a first driving signal is provided to the first area among the driving signals and a second driving signal having a frequency different from a frequency of the first driving signal is provided to the second area among the driving signals, and
- wherein the sensing unit samples a first sensing signal according to the first driving signal N times during a reference time duration of the first driving signal, and samples a second sensing signal according to the second driving signal N times during the reference time duration.
7 more elements
A display device comprising:
- a display panel including pixels which emit light in unit of frame;
- an input sensing panel which includes driving electrodes and sensing electrodes;
- a driving signal generator which provides driving signals to the driving electrodes, respectively;
- and
- a sensing unit which receives sensing signals according to the driving signals from the sensing electrodes, and determines whether a touch is performed based on the sensing signals,
- wherein each of the driving signals includes a sinusoidal wave,
- wherein frequencies of at least some of the driving signals are different from each other,
- wherein the input sensing panel includes a first area and a second area,
- wherein the first area is farther from the driving signal generator or the sensing unit than the second area is from the driving signal generator or the sensing unit,
- wherein a first driving signal is provided to the first area among the driving signals and a second driving signal having a frequency different fro ma frequency of the first driving signal is provided to the second area among the driving signals, and
- wherein the sensing unit samples a first sending signal according to the first driving signal N times during a reference time duration of the first driving signal, and samples a second sending signal according to the second driving signal N times during the reference time duration.
8 more elements
An input sensing device comprising:
- a sensing panel which includes first electrodes and second electrodes;
- a driver which provides driving signals to the first electrodes, respectively;
- and
- a sensing unit which receives sensing signals according to the driving signals from the second electrodes,
- wherein each of the driving signals includes a sinusoidal wave, and
- wherein at least one of the driving signals has a first frequency, at least another one of the driving signals has a second frequency, and the first frequency and the second frequency are different from each other,
- wherein the sensing panel includes a first area and a second area,
- wherein the first area is farther from the driver or the sending unit than the second area is from the driver or the sensing unit,
- wherein a first driving signal is provided to the first area among the driving signals and second driving signal having a frequency different from a frequency of the first driving signal is provided to the second area among the driving signals, and
- wherein the sensing unit samples a first sensing signal according to the first driving signal N times during a reference time duration of the first driving signal, and samples a second sensing signal according to the second driving signal N times during the reference time duration.
7 more elements
Dependencies are inferred from the claim text.