Touch display device and display panel
摘要
說明書
Capacitance Ctd formed between the touch line TL and the data line DL may act as crosstalk in a touch sensing signal.
The touch display device 100 according to embodiments has a shield pattern SP disposed between the touch line TL and the data line DL to reduce the capacitance Ctd that may be formed between the touch line TL and the data line DL.
The shield pattern SP is disposed at an area in which the touch line TL overlaps the data line DL. The shield pattern SP may be disposed to overlap all or some of the data line DL. That is, the shield pattern SP may entirely overlap the data line DL or may be configured such that the area of the shield pattern SP overlapping the data line DL is properly adjusted as required.
As a result, the shield pattern SP may prevent the capacitance Ctd from being directly formed between the touch line TL and the data line DL.
Here, the shield pattern SP disposed between the touch line TL and the data line DL may have a shield signal applied thereto through a shield line.
For example, in a case in which the shield pattern SP is connected to the touch electrode TE as the shield line, the common voltage Vcom applied to the touch electrode TE during the display driving periods may also be applied to the shield pattern SP.
In this case, capacitance C1 may be formed between the shield pattern SP and the data line DL during the display driving periods, but the magnitude of the capacitance C1 may be relatively reduced. The value of capacitance C2 formed between the shield pattern SP and the touch electrode TE may be greater than that of the capacitance C1 formed between the shield pattern SP and the data line DL.
