Touch display device and touch sensing circuit

Embodiments of the present disclosure relate to a touch display device and a touch sensing circuit that apply a load-free driving signal having a phase difference or amplitude difference from the touch driving signal to a touch display panel. According to the embodiments of the present disclosure, e...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Woorim Jeong, Jeongseop Lee, SungUk Byun, Hankyu Yang
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Embodiments of the present disclosure relate to a touch display device and a touch sensing circuit that apply a load-free driving signal having a phase difference or amplitude difference from the touch driving signal to a touch display panel. According to the embodiments of the present disclosure, electromagnetic noise immunity may be improved and touch accuracy may be increased. The touch sensing circuit comprises: a touch driving circuit configured to output a pulse type touch driving signal to at least one of a plurality of touch electrodes disposed on a touch display panel; and a load-free driving signal output circuit configured to output at least one load-free driving signal having a frequency equal to a frequency of the touch driving signal and having a phase difference or amplitude difference from the touch driving signal.